chore: bump version to 4.4.7-ba7opf.11.4 (versionCode 485)

The 11.2 gate only relaxed the pre-return zoom check, but the showLabels
gate below it still required LABEL_ZOOM_SUB (6.5), so first-call labels
stayed hidden in the 6.0..6.5 band where the 4-char grid lines render.
- Gate showLabels on GRID_ZOOM_SUB (6.0) when showFirstCallLabels is on.
- Relax MIN_LABEL_CELL_PX (48) to 0.6x for first-call mode so 1° cells
  (~45 px on the equator at zoom 6.0) are not filtered out.
Normal grid-code labels are unchanged (still LABEL_ZOOM_SUB).

.github/dependabot.yml

@@ -4,7 +4,3 @@ updates:
     directory: "/"
     schedule:
       interval: "weekly"
-  - package-ecosystem: "bundler"
-    directory: "/"
-    schedule:
-      interval: "never"

.gitignore

@@ -1,6 +1,9 @@
 # Built application files
 *.ap_
 
+# Hermes AI plans and metadata
+.hermes/
+
 # Files for the ART/Dalvik VM
 *.dex
 
@@ -15,6 +18,7 @@ out/
 # Gradle files
 .gradle/
 build/
+.cxx/
 
 # Local configuration file (sdk path, etc)
 local.properties
@@ -64,4 +68,4 @@ fastlane/readme.md
 /app/release/output-metadata.json
 /app/release/
 /.kotlin/sessions/
-.hermes/
+dist/

AGENTS.md

@@ -8,15 +8,16 @@ All assistant-specific files (`CLAUDE.md`, `.github/copilot-instructions.md`) po
 ## Project Overview
 
 Look4Sat is an open-source, fully offline Android satellite tracker and pass predictor. It tracks 9000+ active
-satellites using Celestrak/SatNOGS orbital data, calculates positions via SGP4/SDP4, and predicts passes relative to
-the user's location. Features include polar radar visualization, SSTV image decoding, and ground track mapping. No ads,
-no tracking, no network required after initial data download.
+satellites using TLE/OMM data from Celestrak/SatNOGS, calculates orbital positions via SGP4/SDP4 models, and displays
+passes relative to the user's location. Features include polar radar visualization, SSTV image decoding, satellite
+ground track mapping, and pass predictions up to 10 days ahead. No ads, no tracking, no network required after initial
+data download.
 
-## Architecture & Design
+## Architecture
 
 **MVI (Model-View-Intent)** with unidirectional data flow:
-- `State` data class (named `<Feature>State`) exposed via `StateFlow` from ViewModel
-- `Action` sealed interface (named `<Feature>Action`) dispatched to ViewModel's `onAction()`
+- `State` data class → exposed via `StateFlow` from ViewModel
+- `Action` sealed interface → user intents dispatched to ViewModel's `onAction()`
 - Jetpack Compose UI observes state and recomposes reactively
 
 **Clean Architecture layers:**
@@ -33,11 +34,9 @@ no tracking, no network required after initial data download.
 | `feature:satellites` | Satellite list, filtering, selection                                |
 | `feature:settings`   | User preferences                                                    |
 
-**Feature isolation:**
-- `feature:*` modules depend only on `core:domain` and `core:presentation`.
-- No feature-to-feature dependencies; cross-feature communication goes through core layers.
+- `feature:*` modules depend only on `core:domain` + `core:presentation`. Features never depend on each other.
 
-## Build & Platform
+## Build & Run
 
 ```shell
 # Debug build
@@ -51,55 +50,54 @@ no tracking, no network required after initial data download.
 ```
 
 - **Min SDK**: 24 | **Target SDK**: 36 | **JDK**: 17
-- **Gradle**: Version catalog in `gradle/libs.versions.toml` + convention plugins in `build-logic/`
+- **Gradle**: Uses version catalog (`gradle/libs.versions.toml`) + convention plugins in `build-logic/`
 
-## Tech Stack
+## Key Libraries
 
 - **Compose** (BOM 2026.05.01) + Material3 Adaptive
-- **Navigation3**: Type-safe navigation with `@Serializable` nav keys
-- **Room** (KSP code generation) for local satellite/orbital storage
-- **OkHttp** 5.x for data downloads
+- **Navigation3** (type-safe, uses `@Serializable` NavKeys)
+- **Room** (KSP code generation) for local satellite/TLE storage
+- **OkHttp** 5.x for TLE downloads
 - **OSMDroid** for map rendering
-- **Kotlin Serialization** for navigation args and parsing
+- **Kotlin Serialization** for navigation args and data parsing
 - **Coroutines** + `StateFlow` for async/reactive patterns
-- **Localization**: 7 languages (en, es, ru, si, tr, uk, zh)
+
+## Conventions
+
+- **Minimal dependencies**: Avoid adding libraries when a simple manual solution exists. Fewer deps = less maintenance.
+- **DI**: Manual — ViewModels use companion `factory()` methods with `IMainContainer` interface.
+- **Navigation**: Type-safe Compose Navigation3 with `@Serializable` data classes as nav keys.
+- **State naming**: `<Feature>State` data class + `<Feature>Action` sealed interface per feature.
+- **No feature-to-feature deps**: All cross-feature communication goes through core layers.
+- **Localization**: 7 languages (en, es, ru, si, tr, uk, zh).
 
 ## Data Formats & Migration
 
-Look4Sat supports both TLE and OMM (Orbit Mean-Elements Message) CSV formats:
+**TLE vs. OMM/CSV format:**
 
-- **TLE format**: Legacy 3-line element format limited by 5-digit NORAD IDs
-- **OMM/CSV format**: Successor format with ISO 8601 timestamps and larger NORAD ID support
-- New 5-digit NORAD IDs are exhausted; TLE is officially deprecated and OMM/CSV is the clear default
-- `DataParser.kt` supports both via `parseTLEStream()` and `parseCSVStream()`
-- Downloads auto-detect format; both produce identical `OrbitalData` objects
-- Existing code already supports transparent source transition without feature changes
-- Refresh orbital data weekly for accurate pass prediction (orbital decay)
+Look4Sat supports both TLE and OMM (Orbit Mean-Elements Message) formats for backward compatibility:
 
-## Engineering Heuristics (Lazy = Efficient)
+- **TLE format**: Traditional 3-line element format (deprecated). NORAD catalog numbers are 5-digit integers, which
+  are running out of space. Celestrak has signaled that TLE format will eventually be phased out.
+- **OMM/CSV format**: The future standard. CSV files contain the same orbital parameters as TLE but use ISO 8601
+  timestamps and support larger NORAD IDs. Celestrak and SatNOGS already provide OMM data in CSV format.
 
-- Treat "lazy" as efficient, not careless: the best code is the code never written.
-- First understand the task and trace the real flow end-to-end, then climb this ladder:
-  1. Does this need to be built now? (YAGNI)
-  2. Does it already exist in this codebase? Reuse helpers/patterns before rewriting.
-  3. Does Kotlin/Java stdlib already solve it?
-  4. Does the Android/platform API already solve it?
-  5. Does an already-installed dependency solve it?
-  6. Can this be simpler (including one-liner simple)?
-  7. Only then: write the minimum code that works.
-- Prefer deletion to addition, boring over clever, and the fewest touched files.
-- Avoid new abstractions, dependencies, and boilerplate unless explicitly requested.
-- Manual DI only: ViewModels use companion `factory()` methods with `IMainContainer`.
-- Release builds use ProGuard: avoid reflection-heavy libraries unless explicitly approved.
-- When two options are similar in size, choose the edge-case-correct one.
-- If you keep a deliberate simplification (for example O(n^2) scan or global lock), leave a short comment with the ceiling and upgrade path.
-- For complex asks, challenge scope when appropriate: "Do you need X, or does Y already cover it?"
+**Current implementation:**
+- `DataParser.kt` handles both `parseTLEStream()` and `parseCSVStream()` seamlessly
+- TLE data is downloaded from configured sources and stored in Room database
+- When downloading satellite data, the app automatically detects format and parses accordingly
+- Both formats produce identical `OrbitalData` objects, ensuring transparent format switching
 
-## Bug-Fix Policy
+**Migration path:**
+As NORAD catalog space becomes constrained, OMM/CSV will become the primary format. Look4Sat is already positioned
+to handle this transition without code changes — existing users can continue using TLE files while new sources
+transition to OMM/CSV automatically.
 
-- Fix root cause, not just the reported symptom.
-- If touching a shared function, inspect callers and prefer one shared fix over per-caller patches.
-- The smallest correct diff wins only after behavior is understood.
+## Code Style
+
+- Prefer **short, focused functions** — single responsibility, easy to read.
+- **Exceptions**: Composable functions and math-heavy algorithms (SGP4/SDP4) may be longer.
+- Strict code style — no dead code, no unused imports, consistent formatting.
 
 ## Roadmap
 
@@ -107,9 +105,12 @@ Look4Sat supports both TLE and OMM (Orbit Mean-Elements Message) CSV formats:
 
 ## Gotchas
 
-- Orbital math lives in `core:domain/predict/` — dense vector math (SGP4/SDP4). Tread carefully.
+- Orbital math lives in `core:domain/predict/` — it's dense vector math (SGP4/SDP4). Tread carefully.
+- TLE/OMM data must be refreshed weekly for accurate predictions (satellite orbits decay). TLE format is legacy and
+  will eventually be deprecated in favor of OMM/CSV as NORAD catalog numbers approach the 5-digit limit.
 - SSTV decoding in `feature:radar` is experimental; image quality depends on signal strength during satellite pass.
-- `build-logic/convention/` contains shared Gradle configuration — edit there, not in individual modules.
+- `build-logic/convention/` contains all shared Gradle configuration — edit there, not in individual modules.
+- ProGuard is enabled for release builds — don't add reflection-based libs or any other dependencies without asking.
 
 ## Copilot Working Mode: Code-Only
 

README.md

@@ -1,45 +1,42 @@
-# Look4Sat: Satellite tracker
+# Look4Sat-BA7OPF
 
-[![Look4Sat CI](https://github.com/rt-bishop/Look4Sat/actions/workflows/release.yml/badge.svg)](https://github.com/rt-bishop/Look4Sat/actions/workflows/release.yml)
+[![Release](https://img.shields.io/github/v/release/atsunatsu/Look4Sat)](https://github.com/atsunatsu/Look4Sat/releases)
 
-[<img src="https://play.google.com/intl/en_gb/badges/static/images/badges/en_badge_web_generic.png" alt="Get it on Google Play" height="80">](https://play.google.com/store/apps/details?id=com.rtbishop.look4sat)
-[<img src="https://fdroid.gitlab.io/artwork/badge/get-it-on.png" alt="Get it on F-Droid" height="80">](https://f-droid.org/packages/com.rtbishop.look4sat/)
+**BA7OPF 定制版** — 基于 [rt-bishop/Look4Sat](https://github.com/rt-bishop/Look4Sat) 的业余无线电卫星追踪器，增加了线性卫星频率计算器等功能。
 
-### Radio satellite tracker and pass predictor for Android, inspired by Gpredict
+## 本仓库特色功能
 
-<p float="left">
-<img src="fastlane/metadata/android/en-US/images/phoneScreenshots/1.png" width="192"/>
-<img src="fastlane/metadata/android/en-US/images/phoneScreenshots/2.png" width="192"/>
-<img src="fastlane/metadata/android/en-US/images/phoneScreenshots/3.png" width="192"/>
-<img src="fastlane/metadata/android/en-US/images/phoneScreenshots/4.png" width="192">
-</p>
+- **网格地图模式（Grid Mode）** — 地图页内置 VUCC 网格覆盖图：已通联网格绿色填充、漫游网格蓝色 45° 斜纹（疏朗半透明样式）、当前所在方格淡黄加粗框；点击已通联网格弹出该网格内通联明细弹窗；进入网格模式默认 VUCC 视图
+- **奖状边界模式（Award Boundaries）** — 在网格地图上叠加 DXCC / WAPC / WAJA / WAZ / WAS 国界·省界·分区边界，已确认区域绿色填充
+- **LoTW 网格同步** — 直连 ARRL Logbook（账号密码验证）下载确认报告，worked / roamed 网格自动更新（兼容任意字段顺序的 ADIF 解析）；同步失败按凭据错误/限流/超时分类提示
+- **双站过境匹配（Mutual Pass）** — 输入友台经纬度/网格，筛选双方同时可见的卫星过境，在地图上同时显示双方仰角曲线和地面轨迹，支持一键跳转雷达页查看详情
+- **线性卫星转发器频率计算器** — 在雷达页的 Calculator 标签页中，支持 TX/RX 双向多普勒频率计算，以及下行频率偏移（offset）输入，方便操作带偏移的线性卫星
+- **CW 解码器** — 集成 Morse Expert 解码引擎，支持瀑布图、实时解码文本（arm64 + armeabi-v7a 双架构）
+- **AMSAT 状态页** — 实时查看卫星的业余无线电转发器状态（开启/关闭/待机），支持 72 小时历史记录回放，启动时预取缓存
+- **应用内更新检查** — 设置页一键检查 GitHub 最新 Release，展示版本说明并直接下载安装
+- **自定义 TLE 数据源** — 可添加自定义 TLE/Celestrak CSV 数据源，长按拖拽排序，数据源启停开关与 HTTP 状态码显示
+- **中文界面优化** — 翻译修正、UI 布局调整，系统语言自动切换
 
-### Track satellite passes with ease!
+## 上游仓库
 
-Thanks to [Celestrak](https://celestrak.com/) and [SatNOGS](https://satnogs.org/) you have access to over 9000 active satellites.\
-You can search the entire database by NORAD Catalog Number or the satellite's name.
+本仓库是 [rt-bishop/Look4Sat](https://github.com/rt-bishop/Look4Sat) 的分支，上游仓库的原始功能包括：
 
-Orbital positions and passes are calculated relative to your location.\
-To get reliable data make sure to set the station position via the app Settings.
+- 基于 Celestrak / SatNOGS 数据的 9000+ 活跃卫星追踪
+- SGP4/SDP4 轨道预测，10 天过境预报
+- 极坐标雷达图、地面轨迹图
+- SSTV 图像解码
+- 无广告、无跟踪、完全离线
 
-The application is built using Kotlin, Coroutines, Jetpack Compose and Navigation.\
-It is now and always will be completely ad-free and open-source.
+## 许可证
 
-## Main features:
-
-*  Predicting satellite positions and passes for up to 10 days
-*  Showing the list of currently active and upcoming satellite passes
-*  Showing the active pass progress, polar trajectory and transceivers info
-*  Showing the satellite positional data, footprint and ground track on the map
-*  Custom TLE satellite data import is available via Three Line Element .txt files
-*  Offline first: calculations are made offline. Weekly TLE data update is recommended.
+GNU General Public License v3.0。详见 [LICENSE](LICENSE)。
 
 ## Star History
 
-<a href="https://star-history.dera.page/#rt-bishop/Look4Sat&type=timeline&legend=top-left">
+<a href="https://star-history.dera.page/#atsunatsu/Look4Sat&type=timeline&legend=top-left">
  <picture>
-   <source media="(prefers-color-scheme: dark)" srcset="https://star-history.dera.page/svg?repos=rt-bishop/Look4Sat&type=timeline&theme=dark&legend=top-left" />
-   <source media="(prefers-color-scheme: light)" srcset="https://star-history.dera.page/svg?repos=rt-bishop/Look4Sat&type=timeline&legend=top-left" />
-   <img alt="Star History Chart" src="https://star-history.dera.page/svg?repos=rt-bishop/Look4Sat&type=timeline&legend=top-left" />
+   <source media="(prefers-color-scheme: dark)" srcset="https://star-history.dera.page/svg?repos=atsunatsu/Look4Sat&type=timeline&theme=dark&legend=top-left" />
+   <source media="(prefers-color-scheme: light)" srcset="https://star-history.dera.page/svg?repos=atsunatsu/Look4Sat&type=timeline&legend=top-left" />
+   <img alt="Star History Chart" src="https://star-history.dera.page/svg?repos=atsunatsu/Look4Sat&type=timeline&legend=top-left" />
  </picture>
 </a>

app/build.gradle.kts

@@ -1,3 +1,41 @@
+import java.io.FileInputStream
+import java.util.Properties
+
 plugins {
     alias(libs.plugins.convention.applicationPlugin)
 }
+
+// Release signing credentials live in local.properties (gitignored) or
+// environment variables — never hardcode passwords in VCS.
+val releaseProps = Properties().apply {
+    val propsFile = rootProject.file("local.properties")
+    if (propsFile.exists()) FileInputStream(propsFile).use { load(it) }
+}
+fun releaseCred(name: String): String =
+    releaseProps.getProperty(name) ?: System.getenv(name) ?: ""
+
+android {
+    namespace = libs.versions.packageName.get()
+    defaultConfig {
+        applicationId = "cn.ba7opf.look4sat"
+        // CW decoder ships for both ABIs (see feature/cw jniLibs); the APK must
+        // not be pinned to 32-bit only or 64-bit devices fall back to ARM32.
+        ndk {
+            abiFilters.add("armeabi-v7a")
+            abiFilters.add("arm64-v8a")
+        }
+    }
+    signingConfigs {
+        create("release") {
+            storeFile = file(System.getProperty("user.home") + "/my-release-key.jks")
+            storePassword = releaseCred("RELEASE_STORE_PASSWORD")
+            keyAlias = releaseCred("RELEASE_KEY_ALIAS").ifEmpty { "look4sat" }
+            keyPassword = releaseCred("RELEASE_KEY_PASSWORD")
+        }
+    }
+    buildTypes {
+        release {
+            signingConfig = signingConfigs.getByName("release")
+        }
+    }
+}

app/src/main/AndroidManifest.xml

@@ -13,6 +13,7 @@
     <uses-permission android:name="android.permission.BLUETOOTH_SCAN" />
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.RECORD_AUDIO" />
+    <uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />
 
     <application
         android:name=".MainApplication"
@@ -25,6 +26,7 @@
         <activity
             android:name=".MainActivity"
             android:exported="true"
+            android:screenOrientation="portrait"
             android:theme="@style/Theme.Look4Sat.SplashScreen">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
@@ -44,5 +46,15 @@
             android:name="android.telephony.PROPERTY_SATELLITE_DATA_OPTIMIZED"
             android:value="com.rtbishop.look4sat" />
 
+        <provider
+            android:name="androidx.core.content.FileProvider"
+            android:authorities="${applicationId}.fileprovider"
+            android:exported="false"
+            android:grantUriPermissions="true">
+            <meta-data
+                android:name="android.support.FILE_PROVIDER_PATHS"
+                android:resource="@xml/file_paths" />
+        </provider>
+
     </application>
 </manifest>

app/src/main/java/com/rtbishop/look4sat/MainApplication.kt

@@ -17,10 +17,20 @@
  */
 package com.rtbishop.look4sat
 
+import android.app.Activity
 import android.app.Application
+import android.app.Application.ActivityLifecycleCallbacks
+import android.os.Bundle
 import com.rtbishop.look4sat.core.data.injection.MainContainer
 import com.rtbishop.look4sat.core.domain.repository.IContainerProvider
 import com.rtbishop.look4sat.core.domain.repository.IMainContainer
+import com.rtbishop.look4sat.core.domain.repository.LoTWSyncMode
+import com.rtbishop.look4sat.core.domain.repository.LoTWResult
+import com.rtbishop.look4sat.core.domain.repository.applyLoTWGridResult
+import com.rtbishop.look4sat.core.domain.repository.lotwCursorApi
+import com.rtbishop.look4sat.core.domain.repository.lotwSyncToday
+import com.rtbishop.look4sat.core.domain.repository.resolveLoTWSyncMode
+import com.rtbishop.look4sat.core.domain.repository.shouldAutoSyncLoTW
 import kotlinx.coroutines.launch
 import java.text.SimpleDateFormat
 import java.util.Date
@@ -35,12 +45,39 @@ class MainApplication : Application(), IContainerProvider {
     override fun onCreate() {
         super.onCreate()
         container = MainContainer(this)
+        clearAmSatCacheOnAppBackground()
         // trigger automatic update every 48 hours
         container.appScope.launch { checkAutoUpdate() }
+        // automatic LoTW grid sync on every app start (gated, see checkLoTWAutoSync)
+        container.appScope.launch { checkLoTWAutoSync() }
         // load satellite data on every app start
         container.appScope.launch { container.satelliteRepo.initRepository() }
     }
 
+    private fun clearAmSatCacheOnAppBackground() {
+        registerActivityLifecycleCallbacks(object : ActivityLifecycleCallbacks {
+            private var startedActivityCount = 0
+
+            override fun onActivityStarted(activity: Activity) {
+                if (startedActivityCount == 0) {
+                    container.appScope.launch { container.amSatRepo.prefetchStatus() }
+                }
+                startedActivityCount += 1
+            }
+
+            override fun onActivityStopped(activity: Activity) {
+                startedActivityCount = (startedActivityCount - 1).coerceAtLeast(0)
+                if (startedActivityCount == 0) container.amSatRepo.clearStatusCache()
+            }
+
+            override fun onActivityCreated(activity: Activity, savedInstanceState: Bundle?) = Unit
+            override fun onActivityResumed(activity: Activity) = Unit
+            override fun onActivityPaused(activity: Activity) = Unit
+            override fun onActivitySaveInstanceState(activity: Activity, outState: Bundle) = Unit
+            override fun onActivityDestroyed(activity: Activity) = Unit
+        })
+    }
+
     private suspend fun checkAutoUpdate(timeNow: Long = System.currentTimeMillis()) {
         if (container.settingsRepo.otherSettings.value.stateOfAutoUpdate) {
             val timeDelta = timeNow - container.settingsRepo.databaseState.value.updateTimestamp
@@ -51,4 +88,37 @@ class MainApplication : Application(), IContainerProvider {
             }
         }
     }
+
+    /**
+     * Automatic LoTW grid sync, mirroring [checkAutoUpdate]: checked on every
+     * app start, but only pulls when due — LoTW credentials configured, the
+     * LoTW auto-sync toggle on, at least one prior (manual) sync, and not
+     * already synced today (ARRL limits report pulls, ~once a day per account).
+     * Incremental when the callsign is unchanged; a callsign change falls back
+     * to a full replace so no stale grids from another account linger.
+     * Failures are silent and simply retried on the next app start — the manual
+     * sync button still surfaces the explicit cause to the user.
+     */
+    private suspend fun checkLoTWAutoSync(timeNow: Long = System.currentTimeMillis()) {
+        val settingsRepo = container.settingsRepo
+        val lotwSettings = settingsRepo.lotwSettings.value
+        if (!shouldAutoSyncLoTW(
+                isConfigured = lotwSettings.isConfigured,
+                autoLotwSyncEnabled = settingsRepo.otherSettings.value.stateOfAutoLotwSync,
+                lastSyncDate = settingsRepo.getLastLotwSyncDate(),
+                today = lotwSyncToday(timeNow)
+            )
+        ) return
+        val callsign = lotwSettings.callsign.trim().uppercase()
+        val mode = resolveLoTWSyncMode(settingsRepo.getLastLotwSyncCallsign(), callsign, requested = null)
+        val since = if (mode == LoTWSyncMode.Incremental) lotwCursorApi(settingsRepo.getLastLotwSyncDate()) else ""
+        println("Started periodic LoTW grid sync (${mode.name.lowercase()})")
+        val result = container.lotwRepo.fetchConfirmedGridQsos(callsign, lotwSettings.password, since)
+        if (result is LoTWResult.Success) {
+            val count = applyLoTWGridResult(settingsRepo, result, mode, callsign, timeNow)
+            println("Periodic LoTW grid sync finished: $count worked grids")
+        } else {
+            println("Periodic LoTW grid sync skipped (${result::class.simpleName})")
+        }
+    }
 }

app/src/main/java/com/rtbishop/look4sat/MainScreen.kt

@@ -51,6 +51,8 @@ import androidx.compose.runtime.Composable
 import androidx.compose.runtime.CompositionLocalProvider
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
@@ -61,14 +63,16 @@ import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
+import androidx.lifecycle.ViewModelStoreOwner
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
+import androidx.lifecycle.viewmodel.compose.viewModel
 import androidx.lifecycle.viewmodel.navigation3.rememberViewModelStoreNavEntryDecorator
 import androidx.navigation3.runtime.entryProvider
 import androidx.navigation3.runtime.rememberNavBackStack
 import androidx.navigation3.runtime.rememberSaveableStateHolderNavEntryDecorator
 import androidx.navigation3.ui.NavDisplay
 import com.rtbishop.look4sat.core.domain.repository.IContainerProvider
-import com.rtbishop.look4sat.core.domain.repository.RadioTrackingState
+import com.rtbishop.look4sat.core.domain.repository.MutualPassData
 import com.rtbishop.look4sat.core.presentation.DeeplinkResolver
 import com.rtbishop.look4sat.core.presentation.ElevationThresholds
 import com.rtbishop.look4sat.core.presentation.LocalElevationThresholds
@@ -77,6 +81,9 @@ import com.rtbishop.look4sat.core.presentation.Screen
 import com.rtbishop.look4sat.core.presentation.hasEnoughHeight
 import com.rtbishop.look4sat.core.presentation.hasEnoughWidth
 import com.rtbishop.look4sat.feature.map.MapDestination
+import com.rtbishop.look4sat.feature.map.MapFilterViewModel
+import com.rtbishop.look4sat.feature.mutual.MutualScreen
+import com.rtbishop.look4sat.feature.mutual.MutualViewModel
 import com.rtbishop.look4sat.feature.passes.PassesDestination
 import com.rtbishop.look4sat.feature.radar.RadarDestination
 import com.rtbishop.look4sat.feature.satellites.SatellitesDestination
@@ -98,45 +105,77 @@ fun NavRoot(deeplink: String? = null) {
     // Reverse: outgoing slides out to the right, incoming drifts in from the left
     val popTransition = slideInHorizontally(tween(300)) { -it / 3 } togetherWith
         slideOutHorizontally(tween(300)) { it }
-    NavDisplay(
-        modifier = Modifier.fillMaxSize(),
-        backStack = rootBackStack,
-        onBack = navigateBack,
-        transitionSpec = { pushTransition },
-        popTransitionSpec = { popTransition },
-        predictivePopTransitionSpec = { popTransition },
-        entryDecorators = listOf(
-            rememberSaveableStateHolderNavEntryDecorator(),
-            rememberViewModelStoreNavEntryDecorator()
-        ),
-        entryProvider = entryProvider {
-            entry<Screen.Passes> { MainScreen(navigateToRadar = navigateToRadar) }
-            entry<RadarDestination> {
-                Surface(
-                    modifier = Modifier.fillMaxSize(),
-                    color = MaterialTheme.colorScheme.background
-                ) {
-                    RadarDestination(navigateUp = navigateBack)
+    // Elevation color thresholds must be provided at the root level so that BOTH
+    // the tab content (MainScreen) and the root-level RadarDestination see the
+    // user's custom thresholds. RadarDestination is a sibling entry of MainScreen
+    // in this NavDisplay, so a provider inside MainScreen never reaches it.
+    val context = LocalContext.current
+    val container = (context.applicationContext as IContainerProvider).getMainContainer()
+    val otherSettings by container.settingsRepo.otherSettings.collectAsStateWithLifecycle()
+    CompositionLocalProvider(
+        LocalElevationThresholds provides ElevationThresholds(
+            low = otherSettings.lowElevation,
+            high = otherSettings.highElevation
+        )
+    ) {
+        NavDisplay(
+            modifier = Modifier.fillMaxSize(),
+            backStack = rootBackStack,
+            onBack = navigateBack,
+            transitionSpec = { pushTransition },
+            popTransitionSpec = { popTransition },
+            predictivePopTransitionSpec = { popTransition },
+            entryDecorators = listOf(
+                rememberSaveableStateHolderNavEntryDecorator(),
+                rememberViewModelStoreNavEntryDecorator()
+            ),
+            entryProvider = entryProvider {
+                entry<Screen.Passes> {
+                    MainScreen(
+                        navigateToRadar = navigateToRadar
+                    )
+                }
+                entry<RadarDestination> {
+                    Surface(
+                        modifier = Modifier.fillMaxSize(),
+                        color = MaterialTheme.colorScheme.background
+                    ) {
+                        RadarDestination(navigateUp = navigateBack)
+                    }
                 }
             }
-        }
-    )
+        )
+    }
 }
 
 @Composable
-private fun MainScreen(navigateToRadar: () -> Unit = {}) {
+fun MainScreen(
+    navigateToRadar: () -> Unit = {}
+) {
+    val backStack = rememberNavBackStack(Screen.Passes)
+    val currentKey = backStack.lastOrNull()
+    val navigateBack: () -> Unit = { backStack.removeLastOrNull() }
+    val fadeTransition = fadeIn(animationSpec = tween(350)) togetherWith fadeOut(animationSpec = tween(350))
+    // Map sits at position 4 from the left, matching the upstream nav order
+    // (Satellites, Passes, AMSAT/Status, Map, ...), with the fork's Mutual tab
+    // appended before Settings.
+    val navItems = listOf(Screen.Satellites, Screen.Passes, Screen.AMSAT, Screen.Map, Screen.Mutual, Screen.Settings)
+
     val context = LocalContext.current
     val container = (context.applicationContext as IContainerProvider).getMainContainer()
     val trackingState by container.radioTrackingService.state.collectAsStateWithLifecycle()
     val otherSettings by container.settingsRepo.otherSettings.collectAsStateWithLifecycle()
-
-    val backStack = rememberNavBackStack(Screen.Passes)
-    val currentKey = backStack.lastOrNull()
-    val navigateBack: () -> Unit = { backStack.removeLastOrNull() }
-    val fadeTransition = fadeIn(animationSpec = tween(300)) togetherWith
-        fadeOut(animationSpec = tween(300))
-    val navItems =
-        listOf(Screen.Satellites, Screen.Passes, Screen.Status, Screen.Map, Screen.Settings)
+    // Activity-scoped so the mutual query results survive navigation to Radar and back
+    val mutualViewModel: MutualViewModel = viewModel(
+        viewModelStoreOwner = context as ViewModelStoreOwner,
+        factory = MutualViewModel.factory(container)
+    )
+    // Activity-scoped so the map's award filter survives page switches;
+    // resets to VUCC only on cold start (fresh process).
+    val mapFilterViewModel: MapFilterViewModel = viewModel(
+        viewModelStoreOwner = context as ViewModelStoreOwner,
+        factory = MapFilterViewModel.factory()
+    )
 
     CompositionLocalProvider(
         LocalElevationThresholds provides ElevationThresholds(
@@ -150,18 +189,14 @@ private fun MainScreen(navigateToRadar: () -> Unit = {}) {
                     val isSelected = when (currentKey) {
                         is Screen.Satellites -> screen is Screen.Satellites
                         is Screen.Passes -> screen is Screen.Passes
-                        is Screen.Status -> screen is Screen.Status
                         is Screen.Map -> screen is Screen.Map
+                        is Screen.AMSAT -> screen is Screen.AMSAT
+                        is Screen.Mutual -> screen is Screen.Mutual
                         is Screen.Settings -> screen is Screen.Settings
                         else -> false
                     }
                     item(
-                        icon = {
-                            Icon(
-                                painter = painterResource(screen.iconResId),
-                                contentDescription = stringResource(screen.titleResId)
-                            )
-                        },
+                        icon = { Icon(painterResource(screen.iconResId), stringResource(screen.titleResId)) },
                         label = { Text(stringResource(screen.titleResId)) },
                         selected = isSelected,
                         onClick = {
@@ -190,7 +225,9 @@ private fun MainScreen(navigateToRadar: () -> Unit = {}) {
                     popTransitionSpec = { fadeTransition },
                     predictivePopTransitionSpec = { fadeTransition },
                     entryDecorators = listOf(
+                        // Required for saving Compose state per entry
                         rememberSaveableStateHolderNavEntryDecorator(),
+                        // Required for ViewModel scoping per entry
                         rememberViewModelStoreNavEntryDecorator()
                     ),
                     entryProvider = entryProvider {
@@ -198,73 +235,82 @@ private fun MainScreen(navigateToRadar: () -> Unit = {}) {
                             SatellitesDestination(navigateUp = navigateBack)
                         }
                         entry<Screen.Passes> {
-                            PassesDestination { catNum, aosTime ->
-                                container.satelliteRepo.selectPass(catNum, aosTime)
-                                navigateToRadar()
-                            }
+                            PassesDestination(
+                                navigateToRadar = { catNum, aosTime ->
+                                    container.setMutualPassData(MutualPassData())
+                                    container.satelliteRepo.selectPass(catNum, aosTime)
+                                    navigateToRadar()
+                                }
+                            )
+                        }
+                        entry<Screen.Map> {
+                            MapDestination(mapFilterViewModel = mapFilterViewModel)
+                        }
+                        entry<Screen.Mutual> {
+                            MutualScreen(
+                                viewModel = mutualViewModel,
+                                navigateToRadar = { catNum, aosTime, pass ->
+                                    container.setMutualPassData(pass ?: MutualPassData())
+                                    container.satelliteRepo.selectPass(catNum, aosTime)
+                                    navigateToRadar()
+                                }
+                            )
+                        }
+                        entry<Screen.AMSAT> { SatStatusDestination() }
+                        entry<Screen.Settings> {
+                            SettingsDestination()
                         }
-                        entry<Screen.Status> { SatStatusDestination() }
-                        entry<Screen.Map> { MapDestination() }
-                        entry<Screen.Settings> { SettingsDestination() }
                     }
                 )
+                // Radio tracking status banner
                 if (trackingState.isActive) {
-                    TrackingBanner(
-                        state = trackingState,
-                        onClick = {
-                            val pass = trackingState.currentPass
-                            if (pass != null) {
-                                container.satelliteRepo.selectPass(pass.catNum, pass.aosTime)
-                                navigateToRadar()
-                            }
-                        }
+                    val infiniteTransition = rememberInfiniteTransition(label = "trackingPulse")
+                    val alpha by infiniteTransition.animateFloat(
+                        initialValue = 1f, targetValue = 0.4f,
+                        animationSpec = infiniteRepeatable(
+                            animation = tween(1000, easing = LinearEasing),
+                            repeatMode = RepeatMode.Reverse
+                        ), label = "pulseAlpha"
                     )
+                    Row(
+                        verticalAlignment = Alignment.CenterVertically,
+                        modifier = Modifier
+                            .fillMaxWidth()
+                            .background(MaterialTheme.colorScheme.primaryContainer)
+                            .clickable {
+                                val pass = trackingState.currentPass
+                                if (pass != null) {
+                                    container.setMutualPassData(MutualPassData())
+                                    container.satelliteRepo.selectPass(pass.catNum, pass.aosTime)
+                                    navigateToRadar()
+                                }
+                            }
+                            .padding(horizontal = 12.dp, vertical = 6.dp)
+                    ) {
+                        Box(
+                            modifier = Modifier
+                                .size(8.dp)
+                                .clip(CircleShape)
+                                .background(Color(0xFF4CAF50).copy(alpha = alpha))
+                        )
+                        Spacer(modifier = Modifier.width(8.dp))
+                        Text(
+                            text = "Tracking: ${trackingState.currentPass?.name ?: ""}",
+                            fontSize = 13.sp,
+                            fontWeight = FontWeight.Medium,
+                            color = MaterialTheme.colorScheme.onPrimaryContainer,
+                            modifier = Modifier.weight(1f)
+                        )
+                        val txOk = if (trackingState.txConnected) "TX" else ""
+                        val rxOk = if (trackingState.rxConnected) "RX" else ""
+                        Text(
+                            text = listOf(txOk, rxOk).filter { it.isNotBlank() }.joinToString("/"),
+                            fontSize = 12.sp,
+                            color = MaterialTheme.colorScheme.onPrimaryContainer
+                        )
+                    }
                 }
             }
         }
     }
 }
-
-@Composable
-private fun TrackingBanner(state: RadioTrackingState, onClick: () -> Unit) {
-    val infiniteTransition = rememberInfiniteTransition(label = "trackingPulse")
-    val alpha by infiniteTransition.animateFloat(
-        initialValue = 1f,
-        targetValue = 0.4f,
-        animationSpec = infiniteRepeatable(
-            animation = tween(1000, easing = LinearEasing), repeatMode = RepeatMode.Reverse
-        ),
-        label = "pulseAlpha"
-    )
-    Row(
-        verticalAlignment = Alignment.CenterVertically,
-        modifier = Modifier
-            .fillMaxWidth()
-            .background(MaterialTheme.colorScheme.primaryContainer)
-            .clickable(onClick = onClick)
-            .padding(horizontal = 12.dp, vertical = 6.dp)
-    ) {
-        Box(
-            modifier = Modifier
-                .size(8.dp)
-                .clip(CircleShape)
-                .background(Color(0xFF4CAF50).copy(alpha = alpha))
-        )
-        Spacer(modifier = Modifier.width(8.dp))
-        Text(
-            text = "Tracking: ${state.currentPass?.name ?: ""}",
-            fontSize = 13.sp,
-            fontWeight = FontWeight.Medium,
-            color = MaterialTheme.colorScheme.onPrimaryContainer,
-            modifier = Modifier.weight(1f)
-        )
-        val connections = listOfNotNull(
-            "TX".takeIf { state.txConnected }, "RX".takeIf { state.rxConnected }
-        )
-        Text(
-            text = connections.joinToString("/"),
-            fontSize = 12.sp,
-            color = MaterialTheme.colorScheme.onPrimaryContainer
-        )
-    }
-}

app/src/main/res/xml/file_paths.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<paths xmlns:android="http://schemas.android.com/apk/res/android">
+    <cache-path name="updates" path="." />
+</paths>

build-logic/convention/src/main/java/com/rtbishop/look4sat/convention/ApplicationPlugin.kt

@@ -32,6 +32,7 @@ internal class ApplicationPlugin : Plugin<Project> {
             implementation(project(":core:domain"))
             implementation(project(":core:presentation"))
             implementation(project(":feature:map"))
+            implementation(project(":feature:mutual"))
             implementation(project(":feature:passes"))
             implementation(project(":feature:radar"))
             implementation(project(":feature:satellites"))

build-logic/convention/src/main/java/com/rtbishop/look4sat/convention/CoreDataPlugin.kt

@@ -35,6 +35,9 @@ internal class CoreDataPlugin : Plugin<Project> {
             ksp(libs.androidx.room.compiler)
             implementation(libs.kotlin.coroutines)
             implementation(libs.other.okhttp)
+            // android.jar's org.json is a stub ("not mocked") in unit tests;
+            // provide a real implementation so JSON parsing is testable.
+            testImplementation(libs.test.json)
         }
     }
 }

core/data/src/main/java/com/rtbishop/look4sat/core/data/database/Look4SatDao.kt

@@ -45,12 +45,7 @@ interface Look4SatDao {
     @Query("DELETE FROM entries")
     suspend fun deleteEntries()
 
-    @Query(
-        """
-        SELECT DISTINCT catnum FROM radios WHERE isAlive = 1
-        AND (downlinkMode IN (:modes) OR uplinkMode IN (:modes))
-        """
-    )
+    @Query("SELECT catnum FROM radios WHERE downlinkMode IN (:modes)")
     suspend fun getIdsWithModes(modes: List<String>): List<Int>
 
     @Query("SELECT COUNT(*) FROM radios")
@@ -65,4 +60,7 @@ interface Look4SatDao {
 
     @Query("DELETE FROM radios")
     suspend fun deleteRadios()
+
+    @Query("DELETE FROM radios WHERE isCustom = 0")
+    suspend fun deleteManagedRadios()
 }

core/data/src/main/java/com/rtbishop/look4sat/core/data/database/Look4SatDb.kt

@@ -19,19 +19,21 @@ package com.rtbishop.look4sat.core.data.database
 
 import androidx.room.Database
 import androidx.room.RoomDatabase
+import androidx.room.migration.Migration
+import androidx.sqlite.db.SupportSQLiteDatabase
 import com.rtbishop.look4sat.core.data.database.entity.SatEntry
 import com.rtbishop.look4sat.core.data.database.entity.SatRadio
 
-@Database(entities = [SatEntry::class, SatRadio::class], version = 1, exportSchema = false)
+@Database(entities = [SatEntry::class, SatRadio::class], version = 2, exportSchema = false)
 abstract class Look4SatDb : RoomDatabase() {
     abstract fun look4SatDao(): Look4SatDao
 }
 
-//val MIGRATION_1_2 = object : Migration(1, 2) {
-//    override fun migrate(database: SupportSQLiteDatabase) {
-//        database.execSQL("CREATE TABLE entries_backup (name TEXT NOT NULL, epoch REAL NOT NULL, meanmo REAL NOT NULL, eccn REAL NOT NULL, incl REAL NOT NULL, raan REAL NOT NULL, argper REAL NOT NULL, meanan REAL NOT NULL, catnum INTEGER NOT NULL, bstar REAL NOT NULL, xincl REAL NOT NULL, xnodeo REAL NOT NULL, omegao REAL NOT NULL, xmo REAL NOT NULL, xno REAL NOT NULL, orbitalPeriod REAL NOT NULL, isDeepSpace INTEGER NOT NULL, comment TEXT, PRIMARY KEY(catnum))")
-//        database.execSQL("INSERT INTO entries_backup (name, epoch, meanmo, eccn, incl, raan, argper, meanan, catnum, bstar, xincl, xnodeo, omegao, xmo, xno, orbitalPeriod, isDeepSpace, comment) SELECT name, epoch, meanmo, eccn, incl, raan, argper, meanan, catnum, bstar, xincl, xnodeo, omegao, xmo, xno, 1440 / meanmo, 1440 / meanmo >= 225.0, comment FROM entries")
-//        database.execSQL("DROP TABLE entries")
-//        database.execSQL("ALTER TABLE entries_backup RENAME TO entries")
-//    }
-//}
+/** Adds the mean motion derivative, needed to tell decayed satellites apart, and marks the
+ * transceivers that were imported from a file, so that remote updates leave them alone. */
+val MIGRATION_1_2 = object : Migration(1, 2) {
+    override fun migrate(db: SupportSQLiteDatabase) {
+        db.execSQL("ALTER TABLE entries ADD COLUMN ndot REAL NOT NULL DEFAULT 0.0")
+        db.execSQL("ALTER TABLE radios ADD COLUMN isCustom INTEGER NOT NULL DEFAULT 0")
+    }
+}

core/data/src/main/java/com/rtbishop/look4sat/core/data/database/entity/SatEntry.kt

@@ -30,5 +30,6 @@ data class SatEntry(
     val argper: Double,
     val meanan: Double,
     val catnum: Int,
-    val bstar: Double
+    val bstar: Double,
+    val ndot: Double = 0.0
 )

core/data/src/main/java/com/rtbishop/look4sat/core/data/database/entity/SatRadio.kt

@@ -32,5 +32,7 @@ data class SatRadio(
     val uplinkHigh: Long?,
     val uplinkMode: String?,
     val isInverted: Boolean,
-    val catnum: Int?
+    val catnum: Int?,
+    /** Set for manually imported transceivers, which remote updates must not replace. */
+    val isCustom: Boolean = false
 )

core/data/src/main/java/com/rtbishop/look4sat/core/data/framework/NetworkReporter.kt

@@ -67,7 +67,7 @@ class NetworkReporter(
                 .replace($$"$AZ", azimuth.toString())
                 .replace($$"$EL", el.toString())
                 .unescapeControlChars()
-            write(rotatorSocket, command) { rotatorConnected = false }
+            write(rotatorSocket, command) { resetRotatorConnection() }
         }
     }
 
@@ -154,5 +154,7 @@ class NetworkReporter(
     }
 
     private fun String.unescapeControlChars(): String =
-        replace("\\r", "\r").replace("\\n", "\n").replace("\\t", "\t")
+        replace("""\r""", 13.toChar().toString())
+            .replace("""\n""", 10.toChar().toString())
+            .replace("""\t""", 9.toChar().toString())
 }

core/data/src/main/java/com/rtbishop/look4sat/core/data/injection/MainContainer.kt

@@ -24,6 +24,7 @@ import android.hardware.display.DisplayManager
 import android.location.LocationManager
 import androidx.room.Room
 import com.rtbishop.look4sat.core.data.database.Look4SatDb
+import com.rtbishop.look4sat.core.data.database.MIGRATION_1_2
 import com.rtbishop.look4sat.core.data.framework.BluetoothReporter
 import com.rtbishop.look4sat.core.data.framework.Ft817Controller
 import com.rtbishop.look4sat.core.data.framework.Ic705Controller
@@ -35,6 +36,9 @@ import com.rtbishop.look4sat.core.data.repository.SatelliteRepo
 import com.rtbishop.look4sat.core.data.repository.SelectionRepo
 import com.rtbishop.look4sat.core.data.repository.SensorsRepo
 import com.rtbishop.look4sat.core.data.repository.SettingsRepo
+import com.rtbishop.look4sat.core.data.repository.UpdateRepository
+import com.rtbishop.look4sat.core.data.repository.LoTWRepository
+import com.rtbishop.look4sat.core.data.repository.WavelogRepository
 import com.rtbishop.look4sat.core.data.source.LocalSource
 import com.rtbishop.look4sat.core.data.source.RemoteSource
 import com.rtbishop.look4sat.core.data.usecase.AddToCalendar
@@ -47,10 +51,13 @@ import com.rtbishop.look4sat.core.domain.repository.IMainContainer
 import com.rtbishop.look4sat.core.domain.repository.IRadioController
 import com.rtbishop.look4sat.core.domain.repository.IRadioTrackingService
 import com.rtbishop.look4sat.core.domain.repository.IReporter
+import com.rtbishop.look4sat.core.domain.repository.ILoTWRepository
 import com.rtbishop.look4sat.core.domain.repository.ISatelliteRepo
 import com.rtbishop.look4sat.core.domain.repository.ISelectionRepo
 import com.rtbishop.look4sat.core.domain.repository.ISensorsRepo
 import com.rtbishop.look4sat.core.domain.repository.ISettingsRepo
+import com.rtbishop.look4sat.core.domain.repository.IWavelogRepository
+import com.rtbishop.look4sat.core.domain.repository.MutualPassData
 import com.rtbishop.look4sat.core.domain.source.ILocalSource
 import com.rtbishop.look4sat.core.domain.source.IRemoteSource
 import com.rtbishop.look4sat.core.domain.usecase.IAddToCalendar
@@ -62,6 +69,9 @@ import kotlinx.coroutines.CoroutineExceptionHandler
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.SupervisorJob
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asStateFlow
 import okhttp3.OkHttpClient
 
 class MainContainer(private val context: Context) : IMainContainer {
@@ -74,12 +84,22 @@ class MainContainer(private val context: Context) : IMainContainer {
     override val selectionRepo = provideSelectionRepo()
     override val satelliteRepo = provideSatelliteRepo()
     override val databaseRepo = provideDatabaseRepo()
-    override val amSatRepo by lazy { AmSatRepository(remoteSource) }
+    override val amSatRepo by lazy { AmSatRepository(remoteSource, appScope) }
+    override val updateRepo by lazy { UpdateRepository(remoteSource) }
+    override val wavelogRepo: IWavelogRepository by lazy { WavelogRepository() }
+    override val lotwRepo: ILoTWRepository by lazy { LoTWRepository() }
     override val radioTrackingService: IRadioTrackingService by lazy {
         val manager = context.getSystemService(Context.BLUETOOTH_SERVICE) as BluetoothManager
         RadioTrackingService(appScope, manager, satelliteRepo, settingsRepo)
     }
 
+    private val _mutualPassData = MutableStateFlow(MutualPassData())
+    override val mutualPassData: StateFlow<MutualPassData> = _mutualPassData.asStateFlow()
+
+    override fun setMutualPassData(data: MutualPassData) {
+        _mutualPassData.value = data
+    }
+
     override fun provideAddToCalendar(): IAddToCalendar = AddToCalendar(context)
 
     override fun provideShowToast(): IShowToast = ShowToast(context)
@@ -139,13 +159,6 @@ class MainContainer(private val context: Context) : IMainContainer {
         return SensorsRepo(manager, displayManager)
     }
 
-    override fun providePairedBluetoothDevices(): List<Pair<String, String>> = buildList {
-        try {
-            val manager = context.getSystemService(Context.BLUETOOTH_SERVICE) as BluetoothManager
-            manager.adapter?.bondedDevices?.forEach { add(Pair(it.name ?: "Unknown", it.address ?: "")) }
-        } catch (_: SecurityException) {}
-    }
-
     private fun provideDatabaseRepo(): IDatabaseRepo {
         val dbDispatcher = Dispatchers.Default
         val dataParser = DataParser(dbDispatcher)
@@ -155,7 +168,10 @@ class MainContainer(private val context: Context) : IMainContainer {
 
     private fun provideLocalSource(): ILocalSource {
         val builder = Room.databaseBuilder(context, Look4SatDb::class.java, "Look4SatDBv400")
-        val database = builder.fallbackToDestructiveMigration(false).build()
+        val database = builder
+            .addMigrations(MIGRATION_1_2)
+            .fallbackToDestructiveMigration(false)
+            .build()
         return LocalSource(database.look4SatDao())
     }
 

core/data/src/main/java/com/rtbishop/look4sat/core/data/repository/AmSatRepository.kt

@@ -1,5 +1,7 @@
 package com.rtbishop.look4sat.core.data.repository
 
+import com.rtbishop.look4sat.core.domain.model.AmSatReportSubmission
+import com.rtbishop.look4sat.core.domain.model.AmSatReportSubmitResult
 import com.rtbishop.look4sat.core.domain.model.SatDay
 import com.rtbishop.look4sat.core.domain.model.SatReport
 import com.rtbishop.look4sat.core.domain.model.SatSlot
@@ -7,11 +9,18 @@ import com.rtbishop.look4sat.core.domain.model.SatStatus
 import com.rtbishop.look4sat.core.domain.model.SatStatusPage
 import com.rtbishop.look4sat.core.domain.repository.IAmSatRepository
 import com.rtbishop.look4sat.core.domain.source.IRemoteSource
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Deferred
 import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.SupervisorJob
+import kotlinx.coroutines.async
+import kotlinx.coroutines.sync.Mutex
+import kotlinx.coroutines.sync.withLock
 import kotlinx.coroutines.withContext
 import org.json.JSONObject
 import java.text.SimpleDateFormat
 import java.util.Calendar
+import java.util.Date
 import java.util.Locale
 import java.util.TimeZone
 
@@ -26,27 +35,125 @@ private data class ApiReport(
 )
 
 /** AMSAT status repository using RemoteSource (Clean Architecture: data layer handles HTTP). */
-class AmSatRepository(private val remoteSource: IRemoteSource) : IAmSatRepository {
+class AmSatRepository(
+    private val remoteSource: IRemoteSource,
+    private val scope: CoroutineScope = CoroutineScope(SupervisorJob() + Dispatchers.IO)
+) : IAmSatRepository {
+
+    private val statusCacheMutex = Mutex()
+
+    @Volatile
+    private var statusCache: SatStatusPage? = null
+
+    @Volatile
+    private var statusFetchInFlight: Deferred<SatStatusPage?>? = null
+
+    @Volatile
+    private var cacheGeneration = 0
 
     private val isoUtcFormat = SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'", Locale.US).apply {
         timeZone = TimeZone.getTimeZone("UTC")
     }
 
-    override suspend fun fetchStatus(): SatStatusPage? = withContext(Dispatchers.IO) {
+    override fun getCachedStatus(): SatStatusPage? = statusCache
+
+    override suspend fun fetchStatus(forceRefresh: Boolean): SatStatusPage? {
+        if (!forceRefresh) statusCache?.let { return it }
+
+        var cachedPage: SatStatusPage? = null
+        val inFlightFetch = statusCacheMutex.withLock {
+            if (!forceRefresh) {
+                val cached = statusCache
+                if (cached != null) {
+                    cachedPage = cached
+                    return@withLock null
+                }
+            }
+
+            statusFetchInFlight ?: scope.async(Dispatchers.IO) {
+                fetchStatusFromRemote(cacheGeneration)
+            }.also { statusFetchInFlight = it }
+        }
+
+        cachedPage?.let { return it }
+        val fetch = inFlightFetch ?: return null
+        return try {
+            fetch.await()
+        } finally {
+            statusCacheMutex.withLock {
+                if (statusFetchInFlight === fetch && fetch.isCompleted) statusFetchInFlight = null
+            }
+        }
+    }
+
+    private suspend fun fetchStatusFromRemote(generation: Int): SatStatusPage? {
         val nowSec = System.currentTimeMillis() / 1000
-        val catalogJson = remoteSource.getAmSatCatalog() ?: return@withContext null
+        val catalogJson = remoteSource.getAmSatCatalog() ?: return null
         // 72h = 3 days; API hard cap is limit=500 regardless of what we send.
         // 500 records across ~100 catalog satellites ≈ ~1-5 reports/satellite/day — enough for 3 days.
         // Upgrade path: paginate or request AMSAT to raise the cap if catalog grows beyond ~200 sats.
-        val reportsJson = remoteSource.getAmSatReports(hours = 72, limit = 500) ?: return@withContext null
+        val reportsJson = remoteSource.getAmSatReports(hours = 72, limit = 500) ?: return null
+
         val names = parseCatalog(catalogJson)
         val reports = parseReports(reportsJson)
 
-        if (names.isEmpty() && reports.isEmpty()) return@withContext null
+        if (names.isEmpty() && reports.isEmpty()) return null
 
         val statuses = buildStatuses(names, reports, nowSec)
         val reportMap = reports.associate { it.id to toSatReport(it) }
-        SatStatusPage(System.currentTimeMillis(), statuses, reportMap)
+        return SatStatusPage(System.currentTimeMillis(), statuses, reportMap).also { page ->
+            if (generation == cacheGeneration) statusCache = page
+        }
+    }
+
+    override suspend fun prefetchStatus() {
+        fetchStatus(forceRefresh = false)
+    }
+
+    override fun clearStatusCache() {
+        cacheGeneration += 1
+        statusCache = null
+        statusFetchInFlight = null
+    }
+
+    override suspend fun submitReport(submission: AmSatReportSubmission): AmSatReportSubmitResult = withContext(Dispatchers.IO) {
+        val payload = JSONObject().apply {
+            put("name", submission.name)
+            put("report", submission.report)
+            put("callsign", submission.callsign)
+            put("reported_at", isoUtcFormat.format(Date(submission.reportedAtUtcMillis)))
+            if (submission.gridSquare.isNotBlank()) put("grid_square", submission.gridSquare)
+        }
+        val response = remoteSource.submitAmSatReport(payload.toString())
+            ?: return@withContext AmSatReportSubmitResult(success = false, message = "Network request failed")
+        val (code, body) = response
+        val errorMessage = parseSubmitError(body)
+        return@withContext if (code in 200..299 && errorMessage.isBlank()) {
+            AmSatReportSubmitResult(success = true, reportId = parseSubmitReportId(body))
+        } else {
+            AmSatReportSubmitResult(
+                success = false,
+                message = errorMessage.ifBlank { "HTTP $code" }
+            )
+        }
+    }
+
+    private fun parseSubmitError(json: String): String {
+        return try {
+            JSONObject(json).optJSONObject("error")?.optString("message").orEmpty()
+        } catch (_: Exception) {
+            ""
+        }
+    }
+
+    private fun parseSubmitReportId(json: String): String? {
+        return try {
+            val obj = JSONObject(json)
+            obj.optJSONObject("data")?.optString("id")?.takeIf { it.isNotBlank() }
+                ?: obj.optString("id").takeIf { it.isNotBlank() }
+        } catch (_: Exception) {
+            null
+        }
     }
 
     /** Parse catalog JSON to list of satellite names */
@@ -89,14 +196,13 @@ class AmSatRepository(private val remoteSource: IRemoteSource) : IAmSatRepositor
         }
     }
 
-    /** Build one SatStatus (5 days x 12 slots) per catalog satellite, slotting reports by age. */
+    /** Build one SatStatus (3 days x 12 slots) per catalog satellite, slotting reports by age. */
     private fun buildStatuses(names: List<String>, reports: List<ApiReport>, nowSec: Long): List<SatStatus> {
         val byName = reports.groupBy { it.name }
-        val monthAbbr = arrayOf("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec")
         val utc = Calendar.getInstance(TimeZone.getTimeZone("UTC"))
         val labels = (0 until 3).map { d ->
             utc.timeInMillis = (nowSec - d * 86400L) * 1000
-            "${monthAbbr[utc.get(Calendar.MONTH)]} ${utc.get(Calendar.DAY_OF_MONTH)}"
+            formatDayLabel(utc)
         }
         return names.map { name ->
             val slots = (0 until 36).map { slotIdx ->
@@ -115,12 +221,36 @@ class AmSatRepository(private val remoteSource: IRemoteSource) : IAmSatRepositor
                 }
             }
             val days = (0 until 3).map { d ->
-                SatDay(dateLabel = labels[d], slots = slots.subList(d * 12, (d + 1) * 12))
+                // 当天最近连续相同状态报告数:从最新一条往回数,遇状态不同即停。
+                // 空时段(无报告)不打断;按状态文本严格比较,不跨天。
+                val dayStart = nowSec - (d + 1) * 86400L
+                val dayEnd = nowSec - d * 86400L
+                val dayReports = byName[name].orEmpty()
+                    .filter { it.reportedTimeUtcSec in dayStart until dayEnd }
+                    .sortedByDescending { it.reportedTimeUtcSec }
+                val streakCount = if (dayReports.isEmpty()) 0 else {
+                    val newestStatus = dayReports.first().report
+                    dayReports.takeWhile { it.report == newestStatus }.size
+                }
+                SatDay(
+                    dateLabel = labels[d],
+                    slots = slots.subList(d * 12, (d + 1) * 12),
+                    streakCount = streakCount
+                )
             }
             SatStatus(name = name, days = days)
         }
     }
 
+    private fun formatDayLabel(calendar: Calendar): String {
+        return if (Locale.getDefault().language == Locale.CHINESE.language) {
+            "${calendar.get(Calendar.MONTH) + 1}月${calendar.get(Calendar.DAY_OF_MONTH)}日"
+        } else {
+            val monthAbbr = arrayOf("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec")
+            "${monthAbbr[calendar.get(Calendar.MONTH)]} ${calendar.get(Calendar.DAY_OF_MONTH)}"
+        }
+    }
+
     private fun toSatReport(r: ApiReport): SatReport {
         val cal = Calendar.getInstance(TimeZone.getTimeZone("UTC"))
         cal.timeInMillis = r.reportedTimeUtcSec * 1000

core/data/src/main/java/com/rtbishop/look4sat/core/data/repository/DatabaseRepo.kt

@@ -23,6 +23,7 @@ import com.rtbishop.look4sat.core.domain.repository.IDatabaseRepo
 import com.rtbishop.look4sat.core.domain.repository.ISettingsRepo
 import com.rtbishop.look4sat.core.domain.source.ILocalSource
 import com.rtbishop.look4sat.core.domain.source.IRemoteSource
+import com.rtbishop.look4sat.core.domain.source.Sources
 import com.rtbishop.look4sat.core.domain.utility.DataParser
 import kotlinx.coroutines.CoroutineDispatcher
 import kotlinx.coroutines.async
@@ -39,12 +40,14 @@ class DatabaseRepo(
     private val settingsRepo: ISettingsRepo
 ) : IDatabaseRepo {
 
+    private val customSourceType = "Other"
 
     override suspend fun updateTLEFromFile(uri: String): Int = withContext(dispatcher) {
         var importedCount = 0
         remoteSource.getFileStream(uri)?.let { stream ->
             val entries = parseSatelliteStream(uri, unwrapIfZipped(uri, stream))
             localSource.insertEntries(entries)
+            settingsRepo.setSatelliteTypeIds(customSourceType, entries.map { it.catnum })
             importedCount = entries.size
         }
         setUpdateSuccessful(System.currentTimeMillis())
@@ -55,7 +58,7 @@ class DatabaseRepo(
         var importedCount = 0
         remoteSource.getFileStream(uri)?.let { stream ->
             val transceivers = dataParser.parseJSONStream(unwrapIfZipped(uri, stream))
-            localSource.insertRadios(transceivers)
+            localSource.insertRadios(transceivers, isCustom = true)
             importedCount = transceivers.size
         }
         setUpdateSuccessful(System.currentTimeMillis())
@@ -64,22 +67,54 @@ class DatabaseRepo(
 
     override suspend fun updateFromRemote() = withContext(dispatcher) {
         val settings = settingsRepo.dataSourcesSettings.value
-        fun normalizeUrl(url: String) = if (url.startsWith("http")) url else "https://$url"
-        val tleUrls = settings.satelliteUrls.filter { it.isNotBlank() }.map(::normalizeUrl)
-        val radioUrls = settings.transceiversUrls.filter { it.isNotBlank() }.map(::normalizeUrl)
-        // launch all network requests concurrently
-        val tleJobs = tleUrls.map { url -> async { url to remoteSource.getNetworkStream(url) } }
-        val radioJobs = radioUrls.map { url -> async { url to remoteSource.getNetworkStream(url) } }
-        // parse fetched data concurrently
-        val importedEntries = tleJobs.awaitAll().flatMap { (url, stream) ->
-            stream?.let { parseSatelliteStream(url, unwrapIfZipped(url, it)) }.orEmpty()
+        // Keep the raw URL as the status key (matches what the settings UI
+        // displays) while requesting with the normalized URL.
+        val tleUrls = settings.satelliteUrls
+            .filterIndexed { i, url -> url.isNotBlank() && settings.isSatelliteEnabled(i) }
+            .map { it to normalizeUrl(it) }
+            .distinctBy { it.second }
+        val radioUrls = settings.transceiversUrls
+            .filterIndexed { i, url -> url.isNotBlank() && settings.isTransceiverEnabled(i) }
+            .map { it to normalizeUrl(it) }
+            .distinctBy { it.second }
+        val builtinTypesByUrl = Sources.satelliteDataUrls
+            .filterValues { it.isNotBlank() }
+            .mapValues { normalizeUrl(it.value) }
+            .entries
+            .associate { (type, url) -> url to type }
+        val importedTypeIds = mutableMapOf<String, MutableList<Int>>()
+        // launch all network requests concurrently, keeping the raw url as key for status reporting
+        val tleJobs = tleUrls.map { (raw, norm) -> async { raw to remoteSource.getNetworkStream(norm) } }
+        val radioJobs = radioUrls.map { (raw, norm) -> async { raw to remoteSource.getNetworkStream(norm) } }
+        val tleResults = tleJobs.awaitAll()
+        val radioResults = radioJobs.awaitAll()
+        // report the HTTP status code of every source (200, 404, ...)
+        settingsRepo.updateDataSourcesStatus(
+            (tleResults + radioResults).associate { (url, result) -> url to result.code }
+        )
+        // parse fetched data concurrently and associate known built-in URLs with existing type filters.
+        val importedEntries = tleResults.flatMap { (rawUrl, result) ->
+            val normUrl = normalizeUrl(rawUrl)
+            val entries = result.stream?.let { parseSatelliteStream(normUrl, unwrapIfZipped(normUrl, it)) }.orEmpty()
+            val type = builtinTypesByUrl[normUrl] ?: customSourceType
+            importedTypeIds.getOrPut(type) { mutableListOf() }.addAll(entries.map { it.catnum })
+            entries
+        }.distinctBy { it.catnum }
+        importedTypeIds.forEach { (type, ids) -> settingsRepo.setSatelliteTypeIds(type, ids.distinct()) }
+        val importedRadios = radioResults.flatMap { (rawUrl, result) ->
+            val normUrl = normalizeUrl(rawUrl)
+            result.stream?.let { dataParser.parseJSONStream(unwrapIfZipped(normUrl, it)) }.orEmpty()
+        }.filter { it.uuid.isNotBlank() }.distinctBy { it.uuid }
+        // insert parsed data into the database.
+        // Transceivers are a full snapshot: sources publish active entries only, so a retired
+        // transceiver simply disappears from the feed and has to be dropped locally as well.
+        // Manually imported ones (isCustom) are kept: no source can refresh them, so nothing
+        // would bring them back if they were replaced here.
+        if (importedRadios.isNotEmpty()) {
+            localSource.deleteManagedRadios()
+            localSource.insertRadios(importedRadios)
         }
-        val importedRadios = radioJobs.awaitAll().flatMap { (url, stream) ->
-            stream?.let { dataParser.parseJSONStream(unwrapIfZipped(url, it)) }.orEmpty()
-        }
-        // insert parsed data into the database
-        localSource.insertEntries(importedEntries)
-        localSource.insertRadios(importedRadios)
+        if (importedEntries.isNotEmpty()) localSource.insertEntries(importedEntries)
         setUpdateSuccessful(System.currentTimeMillis())
     }
 
@@ -89,6 +124,9 @@ class DatabaseRepo(
         setUpdateSuccessful(0L)
     }
 
+    private fun normalizeUrl(url: String): String =
+        if (url.startsWith("http", ignoreCase = true)) url else "https://$url"
+
     private suspend fun parseSatelliteStream(url: String, stream: InputStream): List<OrbitalData> {
         val bufferedStream = stream.buffered()
         return when {

core/data/src/main/java/com/rtbishop/look4sat/core/data/repository/LoTWRepository.kt

@@ -0,0 +1,460 @@
+/*
+ * Look4Sat. Amateur radio satellite tracker and pass predictor.
+ * Copyright (C) 2019-2026 Arty Bishop and contributors.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package com.rtbishop.look4sat.core.data.repository
+
+import com.rtbishop.look4sat.core.domain.repository.ILoTWRepository
+import com.rtbishop.look4sat.core.domain.repository.LoTWPhase
+import com.rtbishop.look4sat.core.domain.repository.LoTWProgress
+import com.rtbishop.look4sat.core.domain.repository.LoTWResult
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.ensureActive
+import kotlinx.coroutines.withContext
+import kotlin.coroutines.coroutineContext
+import java.net.HttpURLConnection
+import java.net.SocketTimeoutException
+import java.net.URL
+import java.net.URLEncoder
+import java.io.IOException
+import javax.net.ssl.SSLException
+
+/**
+ * Fetches confirmed gridsquares directly from ARRL LoTW via the official report endpoint:
+ *   GET https://lotw.arrl.org/lotwuser/lotwreport.adi?login=<call>&password=<pwd>
+ *       &qso_query=1&qso_qsl=yes&qso_qsldetail=yes&qso_mydetail=yes&qso_qslsince=<date>
+ *
+ * Only QSL_RCVD=Y records are returned by LoTW for qso_qsl=yes, so every grid in the
+ * report is a *confirmed* grid (green on the map). GRIDSQUARE may be a 4- or 6-char
+ * value; VUCC_GRIDS ("EN52en,EN53fa") also yields 4-char fields. All values are
+ * truncated/expanded to the 4-char form used by the map overlay.
+ *
+ * ARRL rate-limits the report endpoint: one download in progress per user id, and
+ * frequent full-report pulls get refused. Failures are reported with an explicit
+ * cause (see LoTWResult) so the UI can tell the user what to do next.
+ */
+class LoTWRepository : ILoTWRepository {
+
+    override suspend fun fetchConfirmedGrids(callsign: String, password: String): LoTWResult =
+        withContext(Dispatchers.IO) {
+            fetchReportBody(callsign, password, since = "", onProgress = {}).fold(
+                onSuccess = { body ->
+                    parseBoth(body)?.let { (grids, _, roamed) ->
+                        LoTWResult.Success(grids, emptyMap(), roamed)
+                    } ?: LoTWResult.RateLimited
+                },
+                onFailure = { toResult(it) }
+            )
+        }
+
+    override suspend fun fetchConfirmedGridQsos(
+        callsign: String,
+        password: String,
+        since: String,
+        onProgress: (LoTWProgress) -> Unit
+    ): LoTWResult = withContext(Dispatchers.IO) {
+        fetchReportBody(callsign, password, since, onProgress).fold(
+            onSuccess = { body ->
+                parseBoth(body)?.let { (grids, qsos, roamed) ->
+                    LoTWResult.Success(grids, qsos, roamed)
+                } ?: LoTWResult.RateLimited
+            },
+            onFailure = { toResult(it) }
+        )
+    }
+
+    internal fun toResult(e: Throwable): LoTWResult = when (e) {
+        is CredentialsException -> LoTWResult.BadCredentials
+        is RateLimitException -> LoTWResult.RateLimited
+        is TimeoutException -> LoTWResult.Timeout
+        else -> LoTWResult.NetworkError(e.message ?: e.javaClass.simpleName)
+    }
+
+    /** Single report fetch feeding the grid set, the per-QSO detail and the roamed set. */
+    private fun parseBoth(
+        body: String
+    ): Triple<Set<String>, Map<String, List<com.rtbishop.look4sat.core.domain.model.GridQso>>, Set<String>>? {
+        val grids = parseConfirmedGrids(body) ?: return null
+        val qsos = parseConfirmedGridQsos(body) ?: return null
+        val roamed = parseRoamedGrids(body) ?: return null
+        return Triple(grids, qsos, roamed)
+    }
+
+    private suspend fun fetchReportBody(
+        callsign: String,
+        password: String,
+        since: String,
+        onProgress: (LoTWProgress) -> Unit
+    ): Result<String> {
+        val call = callsign.trim().uppercase()
+        val pwd = password.trim()
+        if (call.isBlank() || pwd.isBlank()) return Result.failure(IOException("empty credentials"))
+        // Empty since -> full report. qso_qslsince with an early date forces a
+        // FULL confirmed-QSL report; without it LoTW applies a "system supplied
+        // default" since-date and only returns confirmations newer than the
+        // account's last query — subsequent syncs would be incremental/empty.
+        val effectiveSince = since.ifBlank { "2000-01-01" }
+        val query = buildString {
+            append("login=").append(URLEncoder.encode(call, "UTF-8"))
+            append("&password=").append(URLEncoder.encode(pwd, "UTF-8"))
+            append("&qso_query=1&qso_qsl=yes&qso_qsldetail=yes&qso_mydetail=yes")
+            append("&qso_qslsince=").append(URLEncoder.encode(effectiveSince, "UTF-8"))
+        }
+        return try {
+            val connection = URL("$BASE_URL?$query").openConnection() as HttpURLConnection
+            // ARRL can be slow to accept connections from mobile networks
+            // (long TLS handshakes across the Pacific, occasional server-side
+            // queueing — a busy server took 36.5 s to accept a connection in
+            // testing, so 30 s connect would have killed it).
+            //
+            // NOTE: readTimeout is NOT a total-download cap. It is the longest
+            // wait for the NEXT chunk of data (a stall timeout). A full report
+            // for a huge account (tens of thousands of QSLs ≈ tens of MB at
+            // ARRL's ~10 KB/s stream rate) legitimately takes 30+ minutes;
+            // as long as chunks keep arriving it must never be cut off.
+            // 600 s tolerates long server-side pauses while it generates the
+            // report; a truly dead link (no data at all) still fails within it.
+            connection.connectTimeout = 60_000
+            connection.readTimeout = 600_000
+            connection.requestMethod = "GET"
+            connection.setRequestProperty("Accept-Encoding", "gzip")
+            connection.instanceFollowRedirects = true
+            onProgress(LoTWProgress(LoTWPhase.Connecting))
+            val code = connection.responseCode
+            if (code !in 200..299) {
+                connection.disconnect()
+                // Observed in the wild (CQRLOG #2422): LoTW answers a throttled
+                // report pull with HTTP 503 "Page request limit".
+                return if (code == 503 || code == 429) Result.failure(RateLimitException())
+                else Result.failure(IOException("HTTP $code"))
+            }
+            val stream = connection.inputStream
+            val isGzip = "gzip".equals(connection.contentEncoding, ignoreCase = true)
+            val body = readBodyWithProgress(stream, isGzip, onProgress)
+            connection.disconnect()
+            when {
+                // Login failure: HTTP 200 + HTML login page with the error text.
+                body.contains("incorrect", ignoreCase = true) &&
+                    body.contains("assword", ignoreCase = true) -> Result.failure(CredentialsException())
+                // Any other non-ADIF body: rate-limit refusal / server error page.
+                !body.contains("<eoh>", ignoreCase = true) -> Result.failure(RateLimitException())
+                else -> Result.success(body)
+            }
+        } catch (e: java.util.concurrent.CancellationException) {
+            // Cancellation must propagate — it is not a network failure.
+            throw e
+        } catch (e: SocketTimeoutException) {
+            Result.failure(TimeoutException(e.message ?: "timed out"))
+        } catch (e: SSLException) {
+            Result.failure(IOException("TLS: ${e.message ?: "handshake failed"}"))
+        } catch (e: Exception) {
+            println("LoTWRepository fetch failure: $e")
+            Result.failure(IOException(e.message ?: e.javaClass.simpleName))
+        }
+    }
+
+    /**
+     * Streams the report body into a string while reporting download progress.
+     * Once the header's record count (<APP_LoTW_NUMREC>) is seen, the total
+     * body size is estimated as NUMREC * AVG_RECORD_BYTES so the UI can show a
+     * meaningful progress bar and remaining-time estimate.
+     */
+    private suspend fun readBodyWithProgress(
+        stream: java.io.InputStream,
+        isGzip: Boolean,
+        onProgress: (LoTWProgress) -> Unit
+    ): String {
+        val input = if (isGzip) java.util.zip.GZIPInputStream(stream) else stream
+        val reader = java.io.InputStreamReader(input, Charsets.UTF_8)
+        val sb = StringBuilder()
+        val buf = CharArray(8192)
+        var bytesRead = 0L
+        var expected = 0L
+        var qsoCount = 0L
+        var speed = 0L
+        var headerSeen = false
+        var lastSampleMs = System.currentTimeMillis()
+        var lastSampleBytes = 0L
+        var lastEmitMs = 0L
+        while (true) {
+            // Cooperative cancellation: lets the user abort a full sync that
+            // was started by mistake. Throws CancellationException once the
+            // job is cancelled; the blocking read below is fast while chunks
+            // keep arriving, so the abort lands on the next chunk boundary.
+            coroutineContext.ensureActive()
+            val n = reader.read(buf)
+            if (n <= 0) break
+            sb.append(buf, 0, n)
+            bytesRead += n
+            // The record count sits in the report header, long before the data.
+            if (!headerSeen) {
+                NUMREC_REGEX.find(sb)?.let { m ->
+                    qsoCount = m.groupValues[1].toLongOrNull() ?: 0L
+                    expected = qsoCount * AVG_RECORD_BYTES
+                    headerSeen = true
+                }
+            }
+            // Sample speed every 500ms, EMA-smoothed.
+            val now = System.currentTimeMillis()
+            if (now - lastSampleMs >= 500) {
+                val elapsedS = (now - lastSampleMs) / 1000.0
+                if (elapsedS > 0) {
+                    val inst = ((bytesRead - lastSampleBytes) / elapsedS).toLong()
+                    speed = if (speed == 0L) inst else (speed * 7 + inst * 3) / 10
+                    lastSampleMs = now
+                    lastSampleBytes = bytesRead
+                }
+            }
+            // Throttle callbacks to ~4/s so StateFlow updates stay cheap.
+            if (now - lastEmitMs >= 250) {
+                onProgress(LoTWProgress(LoTWPhase.Downloading, bytesRead, expected, speed, qsoCount))
+                lastEmitMs = now
+            }
+        }
+        onProgress(LoTWProgress(LoTWPhase.Downloading, bytesRead, expected, speed, qsoCount))
+        return sb.toString()
+    }
+
+    internal class CredentialsException : Exception("bad callsign/password")
+    internal class RateLimitException : Exception("report refused (rate limit / server error)")
+    internal class TimeoutException(message: String) : Exception(message)
+
+    internal fun parseConfirmedGridQsos(
+        body: String
+    ): Map<String, List<com.rtbishop.look4sat.core.domain.model.GridQso>>? {
+        if (!body.contains("<eoh>", ignoreCase = true)) return null
+        // One ADIF record = fields up to <EOR>. We buffer the fields we care
+        // about, then emit a GridQso on <EOR> when the record is a satellite
+        // QSO (PROP_MODE=SAT) carrying a grid.
+        val result = mutableMapOf<String, MutableList<com.rtbishop.look4sat.core.domain.model.GridQso>>()
+        var propMode: String? = null
+        var call = ""
+        var qsoDate = ""
+        var timeOn = ""
+        var satName = ""
+        var mode = ""
+        var bandUp = ""
+        var bandDown = ""
+        var dxcc: Int? = null
+        var country: String? = null
+        var cqz: Int? = null
+        var state: String? = null
+        var myGrid: String? = null
+        val gridsInRecord = mutableListOf<String>()
+
+        fun emitRecord() {
+            if (propMode != "SAT" || gridsInRecord.isEmpty()) return
+            val epochMs = adifTimestampToEpoch(qsoDate, timeOn)
+            val qso = com.rtbishop.look4sat.core.domain.model.GridQso(
+                call = call, epochMs = epochMs, satName = satName,
+                mode = mode, bandUp = bandUp, bandDown = bandDown,
+                dxcc = dxcc, country = country, cqz = cqz, state = state,
+                myGrid = myGrid
+            )
+            for (grid in gridsInRecord) {
+                result.getOrPut(grid) { mutableListOf() }.add(qso)
+            }
+        }
+
+        fun resetRecord() {
+            propMode = null; call = ""; qsoDate = ""; timeOn = ""
+            satName = ""; mode = ""; bandUp = ""; bandDown = ""
+            dxcc = null; country = null; cqz = null; state = null
+            myGrid = null
+            gridsInRecord.clear()
+        }
+
+        for (raw in body.lineSequence()) {
+            val line = raw.trim()
+            when {
+                line.equals("<EOR>", ignoreCase = true) -> {
+                    emitRecord()
+                    resetRecord()
+                }
+                line.startsWith("<PROP_MODE:") ->
+                    propMode = adifValue(line).uppercase()
+                line.startsWith("<CALL:") ->
+                    call = adifValue(line).uppercase()
+                line.startsWith("<QSO_DATE:") ->
+                    qsoDate = adifValue(line)
+                line.startsWith("<TIME_ON:") ->
+                    timeOn = adifValue(line)
+                line.startsWith("<SAT_NAME:") ->
+                    satName = adifValue(line)
+                line.startsWith("<MODE:") ->
+                    mode = adifValue(line)
+                line.startsWith("<BAND_RX:") ->
+                    bandUp = adifValue(line).uppercase()
+                line.startsWith("<BAND:") && !line.startsWith("<BAND_RX:") ->
+                    bandDown = adifValue(line).uppercase()
+                line.startsWith("<DXCC:") ->
+                    dxcc = adifValue(line).toIntOrNull()
+                line.startsWith("<COUNTRY:") ->
+                    country = adifValue(line).ifBlank { null }
+                line.startsWith("<CQZ:") ->
+                    cqz = adifValue(line).toIntOrNull()
+                line.startsWith("<STATE:") ->
+                    state = adifValue(line).trim().ifBlank { null }?.let { normalizeState(it) }
+                line.startsWith("<MY_GRIDSQUARE:") -> {
+                    // Own-station grid (must not be confused with GRIDSQUARE —
+                    // the opposite station's grid). Recorded per QSO so awards
+                    // can be counted per operated grid.
+                    val value = adifValue(line)
+                    if (value.length >= 4) myGrid = value.take(4).uppercase()
+                }
+                line.startsWith("<GRIDSQUARE:") || line.startsWith("<VUCC_GRIDS:") -> {
+                    // VUCC_GRIDS holds a comma-separated list of grids
+                    // ("EN52en,EN53fa"), up to four for contacts spanning
+                    // several squares; split and keep every 4-char field.
+                    adifValue(line).split(',').forEach { grid ->
+                        val field = grid.trim().uppercase()
+                        if (field.length >= 4) gridsInRecord.add(field.take(4))
+                    }
+                }
+            }
+        }
+        return result
+    }
+
+    /** ADIF field value: "<GRIDSQUARE:4>OL62" -> "OL62". */
+    private fun adifValue(line: String): String =
+        line.substringAfter('>').substringBefore("E<").trim()
+
+    /**
+     * LoTW returns STATE as "CODE // NAME" (e.g. "HB // Hubei" for China,
+     * "34 // Tottori-ken" for Japan, "CA // California" for the US). The award
+     * statistics match on the short CODE only (China 2-letter province pinyin,
+     * Japan 2-digit prefecture, US 2-letter state), so strip the " // NAME"
+     * suffix here once, storing the clean code for every downstream consumer
+     * (persistence, AwardCalculator).
+     */
+    private fun normalizeState(raw: String): String = raw.substringBefore(" // ").trim()
+
+    /** "20260820" + "1130" (or "113000") -> UTC epoch ms; 0 when unparseable. */
+    private fun adifTimestampToEpoch(date: String, time: String): Long = try {
+        val d = date.trim()
+        val t = time.trim().padEnd(6, '0').take(6)
+        val fmt = java.time.format.DateTimeFormatterBuilder()
+            .appendPattern("yyyyMMddHHmmss")
+            .toFormatter()
+            .withZone(java.time.ZoneOffset.UTC)
+        java.time.Instant.from(fmt.parse(d + t)).toEpochMilli()
+    } catch (_: Exception) {
+        0L
+    }
+
+    internal fun parseConfirmedGrids(body: String): Set<String>? {
+        // LoTW answers with ADIF text; on bad credentials it returns a short error
+        // page without an <eoh> header terminator. Real reports always carry <eoh>
+        // (LoTW writes it lowercase). Match case-insensitively to be safe.
+        if (!body.contains("<eoh>", ignoreCase = true)) return null
+        val grids = mutableSetOf<String>()
+        // ADIF fields of one QSO record span multiple lines and are terminated by
+        // <EOR>. Satellite QSOs carry <PROP_MODE:3>SAT (plus <SAT_NAME>); ground
+        // QSOs omit it. Grid fields (GRIDSQUARE / VUCC_GRIDS) must only be
+        // collected for records whose PROP_MODE is SAT, otherwise the map mixes
+        // in terrestrial contacts.
+        //
+        // Buffered per-record pattern (same as parseConfirmedGridQsos): field order
+        // is NOT reliable — ADIF producers (incl. LoTW) emit fields alphabetically,
+        // so <GRIDSQUARE> (G) arrives BEFORE <PROP_MODE> (P) within a record. A
+        // sequential gate ("only add while propMode == SAT") silently drops every
+        // grid on real reports. Buffer the record and decide at <EOR> instead.
+        var propMode: String? = null
+        var pendingGrids = mutableListOf<String>()
+        for (raw in body.lineSequence()) {
+            val line = raw.trim()
+            when {
+                line.equals("<EOR>", ignoreCase = true) -> {
+                    if (propMode == "SAT") grids.addAll(pendingGrids)
+                    propMode = null
+                    pendingGrids = mutableListOf()
+                }
+                line.startsWith("<PROP_MODE:") -> {
+                    propMode = adifValue(line).uppercase()
+                }
+                line.startsWith("<GRIDSQUARE:") || line.startsWith("<VUCC_GRIDS:") -> {
+                    // VUCC_GRIDS holds a comma-separated PAIR of grids
+                    // ("EN52en,EN53fa") for contacts spanning two squares —
+                    // split on ',' and take the 4-char field of each, or the
+                    // second grid is silently dropped.
+                    val value = adifValue(line)
+                    value.split(',').forEach { grid ->
+                        val field = grid.trim().uppercase()
+                        if (field.length >= 4) pendingGrids.add(field.take(4))
+                    }
+                }
+            }
+        }
+        return grids
+    }
+
+    /**
+     * Distinct 4-char gridsquares the account itself operated from, taken from
+     * ADIF <MY_GRIDSQUARE> of satellite QSO records only. This is the
+     * "roamed / activated" set shown as blue stripes on the map — the grids
+     * where the operator's own station was located during confirmed QSOs (a
+     * rover may log several distinct grids; the home grid is included too).
+     * Returns null when the body is not an ADIF report (mirrors the other parsers).
+     */
+    internal fun parseRoamedGrids(body: String): Set<String>? {
+        if (!body.contains("<eoh>", ignoreCase = true)) return null
+        val grids = mutableSetOf<String>()
+        // Buffered per-record pattern (same as parseConfirmedGridQsos): field
+        // order is NOT reliable — ADIF producers (incl. LoTW) emit fields
+        // alphabetically, so <MY_GRIDSQUARE> (M) arrives BEFORE <PROP_MODE> (P)
+        // within a record. A sequential gate ("only add while propMode == SAT")
+        // would silently drop every own grid on real reports; buffer the record
+        // and decide at <EOR> instead.
+        var propMode: String? = null
+        var myGrid: String? = null
+        for (raw in body.lineSequence()) {
+            val line = raw.trim()
+            when {
+                line.equals("<EOR>", ignoreCase = true) -> {
+                    if (propMode == "SAT" && myGrid != null) grids.add(myGrid)
+                    propMode = null
+                    myGrid = null
+                }
+                line.startsWith("<PROP_MODE:") -> {
+                    propMode = adifValue(line).uppercase()
+                }
+                line.startsWith("<MY_GRIDSQUARE:") -> {
+                    // MY_GRIDSQUARE must not be mistaken for GRIDSQUARE (the
+                    // opposite station's grid) — only own-station grids count.
+                    val value = adifValue(line)
+                    if (value.length >= 4) myGrid = value.take(4)
+                }
+            }
+        }
+        return grids
+    }
+
+    private companion object {
+        const val BASE_URL = "https://lotw.arrl.org/lotwuser/lotwreport.adi"
+
+        /** Record count in the report header: `<APP_LoTW_NUMREC:4>2367`. */
+        val NUMREC_REGEX = Regex("<APP_LoTW_NUMREC:\\d+>(\\d+)")
+        /**
+         * Measured 2026-09-16 (BH6RJD, 2367 QSLs): 1.7 MB body streamed at
+         * ~9.5 KB/s ≈ 180 s, i.e. ≈ 720 bytes per ADIF record. Use a
+         * CONSERVATIVE (larger) estimate so the progress bar never hits 100%
+         * before the download truly ends — an under-estimate made the bar sit
+         * at 100% while data was still flowing, read as "finished but stuck".
+         */
+        const val AVG_RECORD_BYTES = 900L
+    }
+}

core/data/src/main/java/com/rtbishop/look4sat/core/data/repository/SatelliteRepo.kt

@@ -35,10 +35,11 @@ import kotlinx.coroutines.delay
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.flow.combine
+import kotlinx.coroutines.flow.distinctUntilChanged
+import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.flow.update
 import kotlinx.coroutines.withContext
 import java.util.TimeZone
-import kotlin.time.Duration.Companion.milliseconds
 
 class SatelliteRepo(
     private val dispatcher: CoroutineDispatcher,
@@ -67,19 +68,24 @@ class SatelliteRepo(
     override suspend fun initRepository() = withContext(dispatcher) {
         combine(
             settingsRepo.selectedIds,
-            settingsRepo.stationPosition
-        ) { selectedIds, _ -> selectedIds }
+            settingsRepo.stationPosition,
+            // Recalculate passes when the UTC display toggle changes, so an existing
+            // AOS time window is reapplied in the newly selected timezone.
+            settingsRepo.otherSettings.map { it.stateOfUtc }.distinctUntilChanged()
+        ) { selectedIds, _, _ -> selectedIds }
             .collect { selectedIds ->
                 _satellites.update { localStorage.getEntriesWithIds(selectedIds) }
                 val settings = settingsRepo.passesSettings.value
+                val now = System.currentTimeMillis()
+                // 历史过境: 回看窗口 hoursBefore 小时, 过境列表从更早时间开始计算.
                 calculatePasses(
-                    time = System.currentTimeMillis(),
-                    hoursAhead = settings.hoursAhead,
+                    time = now - settings.hoursBefore * 60L * 60L * 1000L,
+                    hoursAhead = settings.hoursBefore + settings.hoursAhead,
                     minElevation = settings.minElevation,
                     aosStartMinute = settings.aosStartMinute,
                     aosEndMinute = settings.aosEndMinute,
                     invertAosTimeWindow = settings.invertAosTimeWindow,
-                    modes = settingsRepo.selectedSatModes.value
+                    modes = settings.selectedModes
                 )
             }
     }
@@ -164,7 +170,7 @@ class SatelliteRepo(
                 }
             }
             newPasses.sortBy { it.aosTime }
-            delay(1000.milliseconds) // Simulate loading time for better UX
+            delay(1000) // Simulate loading time for better UX
             _passes.update { newPasses }
         }
         _isCalculating.value = false
@@ -176,13 +182,22 @@ class SatelliteRepo(
         aosEndMinute: Int,
         invertAosTimeWindow: Boolean
     ): Boolean {
-        val offsetMillis = TimeZone.getDefault().getOffset(aosTime).toLong()
+        // Follow the UTC display toggle: with UTC enabled the window is interpreted
+        // in UTC, otherwise in the device's local timezone. Otherwise the pass list
+        // shows UTC times while the filter silently uses local time — the two
+        // disagree by the timezone offset (e.g. 8h for China).
+        val tz = if (settingsRepo.otherSettings.value.stateOfUtc) {
+            TimeZone.getTimeZone("UTC")
+        } else {
+            TimeZone.getDefault()
+        }
+        val offsetMillis = tz.getOffset(aosTime).toLong()
         val localMillis = Math.floorMod(aosTime + offsetMillis, 24L * 60L * 60L * 1000L)
         val aosMinute = (localMillis / 60_000L).toInt()
         val inRange = if (aosStartMinute <= aosEndMinute) {
             aosMinute in aosStartMinute..aosEndMinute
         } else {
-            aosMinute !in (aosEndMinute + 1)..<aosStartMinute
+            aosMinute >= aosStartMinute || aosMinute <= aosEndMinute
         }
         return if (invertAosTimeWindow) !inRange else inRange
     }

core/data/src/main/java/com/rtbishop/look4sat/core/data/repository/SelectionRepo.kt

@@ -38,16 +38,16 @@ class SelectionRepo(
 ) : ISelectionRepo {
 
     private val currentItems = MutableStateFlow<List<SatItem>>(emptyList())
+    private val currentTypes = MutableStateFlow(settingsRepo.selectedTypes.value)
     private val currentQuery = MutableStateFlow("")
 
-    // Resolve sat IDs once when modes change, then filter items reactively.
+    // Resolve type IDs once when types change, then filter items reactively.
     // The HashSet gives O(1) catnum lookups instead of O(n) with a List.
-    // Directly observe settingsRepo.selectedSatModes to ensure real-time sync across screens.
-    private val itemsWithModes = settingsRepo.selectedSatModes.flatMapLatest { list: List<String> ->
-        val catnumSet: Set<Int>? = if (list.isEmpty()) {
+    private val itemsWithTypes = currentTypes.flatMapLatest { types: List<String> ->
+        val catnumSet: Set<Int>? = if (types.isEmpty()) {
             null // null = no filtering
         } else {
-            val ids = localSource.getIdsWithModes(list)
+            val ids = settingsRepo.getSatelliteTypesIds(types)
             if (ids.isEmpty()) null else ids.toHashSet()
         }
         currentItems.map { items ->
@@ -56,18 +56,14 @@ class SelectionRepo(
     }
 
     private val itemsWithQuery = currentQuery.flatMapLatest { query ->
-        itemsWithModes.map { items ->
-            filterByQuery(items, query).sortedWith(
-                compareByDescending<SatItem> { it.isSelected }
-                    .thenBy { it.name }
-                    .thenBy { it.catnum }
-            )
-        }
+        itemsWithTypes.map { items -> filterByQuery(items, query) }
     }
 
-    override fun getCurrentModes() = settingsRepo.selectedSatModes.value
+    override fun getCurrentTypes() = currentTypes.value
 
-    override fun getModesList() = Sources.satelliteModes
+    override fun getTypesList() = Sources.satelliteDataUrls.keys.sorted().toMutableList().apply {
+        removeAt(0)
+    }
 
     override suspend fun getEntriesFlow() = withContext(dispatcher) {
         val selectedIds = settingsRepo.selectedIds.value.toHashSet()
@@ -77,8 +73,9 @@ class SelectionRepo(
         return@withContext itemsWithQuery
     }
 
-    override suspend fun setModes(modes: List<String>) {
-        settingsRepo.setSelectedSatModes(modes)
+    override suspend fun setTypes(types: List<String>) {
+        currentTypes.value = types
+        settingsRepo.setSelectedTypes(types)
     }
 
     override suspend fun setQuery(query: String) {
@@ -114,12 +111,29 @@ class SelectionRepo(
     /**
      * Filters items by query. Uses toIntOrNull() instead of exception-based flow,
      * and lowercases the query once up front instead of per-item.
+     *
+     * Fuzzy search: the query is split into space-separated tokens and every
+     * token must appear in the satellite name after both sides are normalized
+     * (lowercased, non-alphanumeric separators such as dashes, spaces, brackets
+     * and dots stripped). This makes "ao7" match "AO-7 (AMSAT-OSCAR 7)" and
+     * "iss zarya" match "ISS (ZARYA)" — exact continuous-substring matching
+     * previously failed whenever the name contained a separator the query lacked.
      */
     private fun filterByQuery(items: List<SatItem>, query: String): List<SatItem> {
         if (query.isBlank()) return items
         val catnum = query.toIntOrNull()
         if (catnum != null) return items.filter { it.catnum == catnum }
-        val lowerQuery = query.lowercase()
-        return items.filter { it.name.lowercase().contains(lowerQuery) }
+        val tokens = query.split(' ')
+            .map { normalizeForSearch(it) }
+            .filter { it.isNotEmpty() }
+        if (tokens.isEmpty()) return items
+        return items.filter { item ->
+            val normalizedName = normalizeForSearch(item.name)
+            tokens.all { normalizedName.contains(it) }
+        }
     }
+
+    /** Lowercases and strips all non-alphanumeric chars for fuzzy matching. */
+    private fun normalizeForSearch(text: String): String =
+        text.lowercase().filter { it.isLetterOrDigit() }
 }

core/data/src/main/java/com/rtbishop/look4sat/core/data/repository/SensorsRepo.kt

@@ -27,6 +27,7 @@ import android.view.Display
 import android.view.Surface
 import com.rtbishop.look4sat.core.domain.predict.GeoPos
 import com.rtbishop.look4sat.core.domain.predict.RAD2DEG
+import com.rtbishop.look4sat.core.domain.repository.CompassAccuracy
 import com.rtbishop.look4sat.core.domain.repository.ISensorsRepo
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.StateFlow
@@ -41,7 +42,12 @@ class SensorsRepo(
 ) : ISensorsRepo, SensorEventListener {
 
     private val _sensorData = MutableStateFlow(Pair(0f, 0f))
-    private val sensor: Sensor? = sensorManager.getDefaultSensor(Sensor.TYPE_ROTATION_VECTOR)
+    private val rotationSensor: Sensor? = sensorManager.getDefaultSensor(Sensor.TYPE_ROTATION_VECTOR)
+    private val magneticSensor: Sensor? = sensorManager.getDefaultSensor(Sensor.TYPE_MAGNETIC_FIELD)
+    private val _compassAccuracy = MutableStateFlow(
+        if (rotationSensor == null || magneticSensor == null) CompassAccuracy.UNAVAILABLE
+        else CompassAccuracy.UNRELIABLE
+    )
     private val rotationMatrix = FloatArray(9)
     private val tempMatrix = FloatArray(9)
     private val orientationValues = FloatArray(3)
@@ -50,6 +56,7 @@ class SensorsRepo(
     private var hasInitialReading = false
 
     override val sensorData: StateFlow<Pair<Float, Float>> = _sensorData
+    override val compassAccuracy: StateFlow<CompassAccuracy> = _compassAccuracy
 
     override fun getMagDeclination(geoPos: GeoPos, time: Long): Float {
         return GeomagneticField(
@@ -62,15 +69,41 @@ class SensorsRepo(
 
     override fun enableSensor() {
         hasInitialReading = false
-        sensor?.let { sensorManager.registerListener(this, it, SENSOR_RATE_US) }
+        if (rotationSensor == null || magneticSensor == null) {
+            _compassAccuracy.value = CompassAccuracy.UNAVAILABLE
+            return
+        }
+        _compassAccuracy.value = CompassAccuracy.UNRELIABLE
+        val rotationRegistered = sensorManager.registerListener(this, rotationSensor, SENSOR_RATE_US)
+        val magneticRegistered = sensorManager.registerListener(this, magneticSensor, SENSOR_RATE_US)
+        if (!rotationRegistered || !magneticRegistered) {
+            sensorManager.unregisterListener(this)
+            _compassAccuracy.value = CompassAccuracy.UNAVAILABLE
+        }
     }
 
     override fun disableSensor() = sensorManager.unregisterListener(this)
 
-    override fun onAccuracyChanged(sensor: Sensor, accuracy: Int) = Unit
+    override fun onAccuracyChanged(sensor: Sensor, accuracy: Int) {
+        if (sensor.type == Sensor.TYPE_MAGNETIC_FIELD) {
+            updateAccuracy(accuracy)
+        }
+    }
 
     override fun onSensorChanged(event: SensorEvent) {
-        if (event.sensor.type == Sensor.TYPE_ROTATION_VECTOR) handleSensorEvent(event)
+        when (event.sensor.type) {
+            Sensor.TYPE_ROTATION_VECTOR -> handleSensorEvent(event)
+            Sensor.TYPE_MAGNETIC_FIELD -> updateAccuracy(event.accuracy)
+        }
+    }
+
+    private fun updateAccuracy(accuracy: Int) {
+        _compassAccuracy.value = when (accuracy) {
+            SensorManager.SENSOR_STATUS_ACCURACY_HIGH -> CompassAccuracy.HIGH
+            SensorManager.SENSOR_STATUS_ACCURACY_MEDIUM -> CompassAccuracy.MEDIUM
+            SensorManager.SENSOR_STATUS_ACCURACY_LOW -> CompassAccuracy.LOW
+            else -> CompassAccuracy.UNRELIABLE
+        }
     }
 
     private fun getDisplayRotation(): Int {

core/data/src/main/java/com/rtbishop/look4sat/core/data/repository/SettingsRepo.kt

@@ -29,10 +29,9 @@ import com.rtbishop.look4sat.core.domain.model.OtherSettings
 import com.rtbishop.look4sat.core.domain.model.PassesSettings
 import com.rtbishop.look4sat.core.domain.model.RCSettings
 import com.rtbishop.look4sat.core.domain.model.RadioControlSettings
-import com.rtbishop.look4sat.core.domain.model.Constants
+import com.rtbishop.look4sat.core.domain.model.WavelogSettings
 import com.rtbishop.look4sat.core.domain.predict.GeoPos
 import com.rtbishop.look4sat.core.domain.repository.ISettingsRepo
-import com.rtbishop.look4sat.core.domain.source.Sources
 import com.rtbishop.look4sat.core.domain.utility.positionToQth
 import com.rtbishop.look4sat.core.domain.utility.qthToPosition
 import com.rtbishop.look4sat.core.domain.utility.round
@@ -40,6 +39,9 @@ import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.flow.update
 import org.json.JSONObject
+import java.util.Locale
+import com.rtbishop.look4sat.core.domain.model.Constants
+import com.rtbishop.look4sat.core.domain.source.Sources
 
 class SettingsRepo(
     private val locationManager: LocationManager,
@@ -56,6 +58,7 @@ class SettingsRepo(
     private val keyBluetoothFrequencyFormat = "bluetoothFrequencyFormat"
     private val keyFilterShowDeepSpace = "filterShowDeepSpace"
     private val keyFilterHoursAhead = "filterHoursAhead"
+    private val keyFilterHoursBefore = "filterHoursBefore"
     private val keyFilterMinElevation = "filterMinElevation"
     private val keyFilterAosStartMinute = "filterAosStartMinute"
     private val keyFilterAosEndMinute = "filterAosEndMinute"
@@ -72,13 +75,18 @@ class SettingsRepo(
     private val keyFrequencyFormat = "frequencyFormat"
     private val keyFrequencyOffsetHz = "frequencyOffsetHz"
     private val keySelectedIds = "selectedIds"
-    private val keySelectedSatModes = "selectedSatModes"
+    private val keySelectedTypes = "selectedTypes"
+    private val keySelectedModes = "selectedModes"
     private val keyStateOfAutoUpdate = "stateOfAutoUpdate"
+    private val keyStateOfAutoLotwSync = "stateOfAutoLotwSync"
     private val keyStateOfSensors = "stateOfSensors"
+    private val keyCompassOffsetDegrees = "compassOffsetDegrees"
     private val keyStateOfSweep = "stateOfSweep"
     private val keyStateOfUtc = "stateOfUtc"
     private val keyStateOfLightTheme = "stateOfLightTheme"
     private val keyStateOfNightMode = "stateOfNightMode"
+    private val keyStateOfMapGrid = "stateOfMapGrid"
+    private val keyStateOfMapFirstCall = "stateOfMapFirstCall"
     private val keyStationAltitude = "stationAltitude"
     private val keyStationLatitude = "stationLatitude"
     private val keyStationLongitude = "stationLongitude"
@@ -90,18 +98,25 @@ class SettingsRepo(
     private val keySstvMode = "sstvMode"
     private val keyLowElevation = "lowElevation"
     private val keyHighElevation = "highElevation"
-    private val keyRadarCompassOffset = "radarCompassOffset"
-    private val keyRadarCompassOffsetElev = "radarCompassOffsetElev"
+    private val keyUseCustomTle = "useCustomTle"
+    private val keyUseCustomTransceivers = "useCustomTransceivers"
+    private val keyTleUrl = "tleUrl"
+    private val keyTransceiversUrl = "transceiversUrl"
     private val keySatelliteUrls = "satelliteUrls"
     private val keyTransceiversUrls = "transceiversUrls"
+    private val keySatelliteEnabled = "satelliteEnabled"
+    private val keyTransceiversEnabled = "transceiversEnabled"
+    private val keySatnogsTleSourceMigration = "satnogsTleSourceMigration"
     private val separatorComma = ","
     private val separatorUrl = "\n"
+    private val legacyCelestrakSatnogsUrl =
+        "https://celestrak.org/NORAD/elements/gp.php?GROUP=satnogs&FORMAT=csv"
 
     //region # Satellites selection settings
     private val _satelliteSelection = MutableStateFlow(getSelectedIds())
-    private val _satelliteModeSelection = MutableStateFlow(getSelectedSatModes())
+    private val _typesSelection = MutableStateFlow(getSelectedTypes())
     override val selectedIds: StateFlow<List<Int>> = _satelliteSelection
-    override val selectedSatModes: StateFlow<List<String>> = _satelliteModeSelection
+    override val selectedTypes: StateFlow<List<String>> = _typesSelection
 
     override fun setSelectedIds(ids: List<Int>) {
         val selectionString = ids.joinToString(separatorComma)
@@ -109,10 +124,10 @@ class SettingsRepo(
         _satelliteSelection.value = ids
     }
 
-    override fun setSelectedSatModes(modes: List<String>) {
-        val modesString = modes.joinToString(separatorComma)
-        preferences.edit { putString(keySelectedSatModes, modesString) }
-        _satelliteModeSelection.value = modes
+    override fun setSelectedTypes(types: List<String>) {
+        val typesString = types.joinToString(separatorComma)
+        preferences.edit { putString(keySelectedTypes, typesString) }
+        _typesSelection.value = types
     }
 
     private fun getSelectedIds(): List<Int> {
@@ -121,41 +136,218 @@ class SettingsRepo(
         return selectionString.split(separatorComma).map { it.toInt() }
     }
 
-    private fun getSelectedSatModes(): List<String> {
-        val modesString = preferences.getString(keySelectedSatModes, null)
-        if (modesString.isNullOrEmpty()) return emptyList()
-        return modesString.split(separatorComma).sorted()
+    private fun getSelectedTypes(): List<String> {
+        val typesString = preferences.getString(keySelectedTypes, "Amateur")
+        if (typesString.isNullOrEmpty()) return emptyList()
+        return typesString.split(separatorComma)
     }
     //endregion
 
-    //region # Passes filter settings
+    //region # Wavelog worked-grids settings
+    private val keyWavelogUrl = "wavelogUrl"
+    private val keyWavelogToken = "wavelogToken"
+    private val keyWorkedGrids = "workedGrids"
+
+    private val _wavelogSettings = MutableStateFlow(getWavelogSettings())
+    override val wavelogSettings: StateFlow<WavelogSettings> = _wavelogSettings
+
+    override fun updateWavelogSettings(settings: WavelogSettings) {
+        preferences.edit {
+            putString(keyWavelogUrl, settings.url.trim())
+            putString(keyWavelogToken, settings.token.trim())
+        }
+        _wavelogSettings.value = settings.copy(url = settings.url.trim(), token = settings.token.trim())
+    }
+
+    private fun getWavelogSettings(): WavelogSettings = WavelogSettings(
+        url = preferences.getString(keyWavelogUrl, null).orEmpty(),
+        token = preferences.getString(keyWavelogToken, null).orEmpty()
+    )
+
+    override fun getWorkedGrids(): Set<String> {
+        val json = preferences.getString(keyWorkedGrids, null).orEmpty()
+        if (json.isBlank()) return emptySet()
+        return try {
+            val array = org.json.JSONArray(json)
+            (0 until array.length()).mapNotNull { i ->
+                array.optString(i).takeIf { it.isNotBlank() }
+            }.toSet()
+        } catch (_: Exception) {
+            emptySet()
+        }
+    }
+
+    override fun setWorkedGrids(grids: Set<String>) {
+        val array = org.json.JSONArray()
+        grids.sorted().forEach { array.put(it) }
+        preferences.edit { putString(keyWorkedGrids, array.toString()) }
+    }
+
+    // Confirmed satellite QSOs per worked gridsquare, persisted as a single JSON
+    // object: {"OL62":[{"c":call,"t":epochMs,"s":sat,"m":mode,"bu":up,"bd":down}]}.
+    private val keyWorkedGridQsos = "workedGridQsos"
+
+    override fun getWorkedGridQsos(): Map<String, List<com.rtbishop.look4sat.core.domain.model.GridQso>> {
+        val json = preferences.getString(keyWorkedGridQsos, null).orEmpty()
+        if (json.isBlank()) return emptyMap()
+        return try {
+            val root = org.json.JSONObject(json)
+            val result = mutableMapOf<String, List<com.rtbishop.look4sat.core.domain.model.GridQso>>()
+            for (grid in root.keys()) {
+                val array = root.optJSONArray(grid) ?: continue
+                val list = (0 until array.length()).mapNotNull { i ->
+                    val o = array.optJSONObject(i) ?: return@mapNotNull null
+                    com.rtbishop.look4sat.core.domain.model.GridQso(
+                        call = o.optString("c"),
+                        epochMs = o.optLong("t"),
+                        satName = o.optString("s"),
+                        mode = o.optString("m"),
+                        bandUp = o.optString("bu"),
+                        bandDown = o.optString("bd"),
+                        // New award fields: absent in pre-award data -> null.
+                        dxcc = o.optInt("dx", 0).takeIf { it > 0 },
+                        country = o.optString("cty").ifBlank { null },
+                        cqz = o.optInt("cq", 0).takeIf { it > 0 },
+                        state = o.optString("st").ifBlank { null },
+                        // Own-grid field: absent in pre-myGrid data -> null.
+                        myGrid = o.optString("mg").ifBlank { null }
+                    )
+                }
+                if (list.isNotEmpty()) result[grid] = list
+            }
+            result
+        } catch (_: Exception) {
+            emptyMap()
+        }
+    }
+
+    override fun setWorkedGridQsos(qsos: Map<String, List<com.rtbishop.look4sat.core.domain.model.GridQso>>) {
+        val root = org.json.JSONObject()
+        for ((grid, list) in qsos) {
+            val array = org.json.JSONArray()
+            for (q in list) {
+                array.put(
+                    org.json.JSONObject()
+                        .put("c", q.call)
+                        .put("t", q.epochMs)
+                        .put("s", q.satName)
+                        .put("m", q.mode)
+                        .put("bu", q.bandUp)
+                        .put("bd", q.bandDown)
+                        .put("dx", q.dxcc ?: 0)
+                        .put("cty", q.country ?: "")
+                        .put("cq", q.cqz ?: 0)
+                        .put("st", q.state ?: "")
+                        .put("mg", q.myGrid ?: "")
+                )
+            }
+            root.put(grid, array)
+        }
+        preferences.edit { putString(keyWorkedGridQsos, root.toString()) }
+    }
+
+    // Distinct 4-char gridsquares the account operated from (LoTW <MY_GRIDSQUARE>,
+    // satellite QSOs only). Stored as a JSONArray like workedGrids.
+    private val keyRoamedGrids = "roamedGrids"
+
+    override fun getRoamedGrids(): Set<String> {
+        val json = preferences.getString(keyRoamedGrids, null).orEmpty()
+        if (json.isBlank()) return emptySet()
+        return try {
+            val array = org.json.JSONArray(json)
+            (0 until array.length()).mapNotNull { i ->
+                array.optString(i).takeIf { it.isNotBlank() }
+            }.toSet()
+        } catch (_: Exception) {
+            emptySet()
+        }
+    }
+
+    override fun setRoamedGrids(grids: Set<String>) {
+        val array = org.json.JSONArray()
+        grids.sorted().forEach { array.put(it) }
+        preferences.edit { putString(keyRoamedGrids, array.toString()) }
+    }
+
+    // LoTW credentials (stored locally on the device only)
+    private val keyLoTWCall = "lotwCallsign"
+    private val keyLoTWPass = "lotwPassword"
+
+    override val lotwSettings: kotlinx.coroutines.flow.StateFlow<com.rtbishop.look4sat.core.domain.model.LoTWSettings>
+        get() = _lotwSettings
+    private val _lotwSettings = MutableStateFlow(getLoTWSettings())
+
+    override fun updateLoTWSettings(settings: com.rtbishop.look4sat.core.domain.model.LoTWSettings) {
+        preferences.edit {
+            putString(keyLoTWCall, settings.callsign.trim().uppercase())
+            putString(keyLoTWPass, settings.password)
+        }
+        _lotwSettings.value = settings.copy(
+            callsign = settings.callsign.trim().uppercase(),
+            password = settings.password
+        )
+    }
+
+    private fun getLoTWSettings(): com.rtbishop.look4sat.core.domain.model.LoTWSettings =
+        com.rtbishop.look4sat.core.domain.model.LoTWSettings(
+            callsign = preferences.getString(keyLoTWCall, null).orEmpty(),
+            password = preferences.getString(keyLoTWPass, null).orEmpty()
+        )
+
+    // Last successful sync bookkeeping: date ("yyyyMMdd") and callsign. Used to
+    // decide incremental (same callsign) vs full (first time / callsign change)
+    // report requests and to merge increments into the stored grid data.
+    private val keyLastLotwSyncDate = "lotwLastSyncDate"
+    private val keyLastLotwSyncCallsign = "lotwLastSyncCallsign"
+
+    override fun getLastLotwSyncDate(): String =
+        preferences.getString(keyLastLotwSyncDate, null).orEmpty()
+
+    override fun setLastLotwSyncDate(date: String) =
+        preferences.edit { putString(keyLastLotwSyncDate, date) }
+
+    override fun getLastLotwSyncCallsign(): String =
+        preferences.getString(keyLastLotwSyncCallsign, null).orEmpty()
+
+    override fun setLastLotwSyncCallsign(callsign: String) =
+        preferences.edit { putString(keyLastLotwSyncCallsign, callsign.trim().uppercase()) }
+    //endregion
+
+    //region # Transceivers settings
     private val _passesSettings = MutableStateFlow(getPassesSettings())
     override val passesSettings: StateFlow<PassesSettings> = _passesSettings
 
     override fun setPassesSettings(settings: PassesSettings) = preferences.edit {
         putBoolean(keyFilterShowDeepSpace, settings.showDeepSpace)
         putInt(keyFilterHoursAhead, settings.hoursAhead)
+        putInt(keyFilterHoursBefore, settings.hoursBefore)
         putLong(keyFilterMinElevation, settings.minElevation.toRawBits())
         putInt(keyFilterAosStartMinute, settings.aosStartMinute)
         putInt(keyFilterAosEndMinute, settings.aosEndMinute)
         putBoolean(keyFilterAosInvert, settings.invertAosTimeWindow)
+        putString(keySelectedModes, settings.selectedModes.joinToString(separatorComma))
         _passesSettings.value = settings
     }
 
     private fun getPassesSettings(): PassesSettings {
         val showDeepSpace = preferences.getBoolean(keyFilterShowDeepSpace, true)
         val hoursAhead = preferences.getInt(keyFilterHoursAhead, 24)
+        val hoursBefore = preferences.getInt(keyFilterHoursBefore, 0).coerceIn(0, 240)
         val minElevation = Double.fromBits(preferences.getLong(keyFilterMinElevation, 16.0.toRawBits()))
         val aosStartMinute = preferences.getInt(keyFilterAosStartMinute, 0).coerceIn(0, 23 * 60 + 59)
         val aosEndMinute = preferences.getInt(keyFilterAosEndMinute, 23 * 60 + 59).coerceIn(0, 23 * 60 + 59)
         val invertAosTimeWindow = preferences.getBoolean(keyFilterAosInvert, false)
+        val selectedModesString = preferences.getString(keySelectedModes, null)
+        val selectedModes = selectedModesString?.split(separatorComma)?.sorted() ?: emptyList()
         return PassesSettings(
             showDeepSpace,
             hoursAhead,
             minElevation,
             aosStartMinute,
             aosEndMinute,
-            invertAosTimeWindow
+            invertAosTimeWindow,
+            selectedModes,
+            hoursBefore
         )
     }
     //endregion
@@ -235,6 +427,25 @@ class SettingsRepo(
     private val _databaseState = MutableStateFlow(getDatabaseState())
     override val databaseState: StateFlow<DatabaseState> = _databaseState
 
+    override fun getSatelliteTypesIds(types: List<String>): List<Int> {
+        val idsSet = mutableSetOf<Int>()
+        types.forEach { type ->
+            val typeString = preferences.getString("type$type", null)
+            val typeIds = if (typeString.isNullOrBlank()) {
+                emptyList()
+            } else {
+                typeString.split(separatorComma).map { it.toInt() }
+            }
+            idsSet.addAll(typeIds)
+        }
+        return idsSet.toList()
+    }
+
+    override fun setSatelliteTypeIds(type: String, ids: List<Int>) {
+        if (type == "All") return
+        val typesString = ids.joinToString(separatorComma)
+        preferences.edit { putString("type$type", typesString) }
+    }
 
     override fun updateDatabaseState(state: DatabaseState) = preferences.edit {
         putInt(keyNumberOfSatellites, state.numberOfSatellites)
@@ -334,18 +545,20 @@ class SettingsRepo(
             val new = transform(current)
             preferences.edit {
                 putBoolean(keyStateOfAutoUpdate, new.stateOfAutoUpdate)
+                putBoolean(keyStateOfAutoLotwSync, new.stateOfAutoLotwSync)
                 putBoolean(keyStateOfSensors, new.stateOfSensors)
+                putFloat(keyCompassOffsetDegrees, new.compassOffsetDegrees.coerceIn(-180f, 180f))
                 putBoolean(keyStateOfSweep, new.stateOfSweep)
                 putBoolean(keyStateOfUtc, new.stateOfUtc)
                 putBoolean(keyStateOfLightTheme, new.stateOfLightTheme)
                 putBoolean(keyStateOfNightMode, new.stateOfNightMode)
+                putBoolean(keyStateOfMapGrid, new.stateOfMapGrid)
+                putBoolean(keyStateOfMapFirstCall, new.stateOfMapFirstCall)
                 putBoolean(keyShouldSeeWarning, new.shouldSeeWarning)
                 putBoolean(keyShouldSeeWhatsNew, new.shouldSeeWhatsNew)
                 putString(keySstvMode, new.sstvMode)
                 putLong(keyLowElevation, new.lowElevation.toRawBits())
                 putLong(keyHighElevation, new.highElevation.toRawBits())
-                putFloat(keyRadarCompassOffset, new.radarCompassOffset)
-                putFloat(keyRadarCompassOffsetElev, new.radarCompassOffsetElev)
             }
             new
         }
@@ -353,18 +566,20 @@ class SettingsRepo(
 
     private fun getOtherSettings(): OtherSettings = OtherSettings(
         stateOfAutoUpdate = preferences.getBoolean(keyStateOfAutoUpdate, true),
+        stateOfAutoLotwSync = preferences.getBoolean(keyStateOfAutoLotwSync, true),
         stateOfSensors = preferences.getBoolean(keyStateOfSensors, true),
+        compassOffsetDegrees = preferences.getFloat(keyCompassOffsetDegrees, 0f).coerceIn(-180f, 180f),
         stateOfSweep = preferences.getBoolean(keyStateOfSweep, true),
         stateOfUtc = preferences.getBoolean(keyStateOfUtc, false),
         stateOfLightTheme = preferences.getBoolean(keyStateOfLightTheme, false),
         stateOfNightMode = preferences.getBoolean(keyStateOfNightMode, false),
+        stateOfMapGrid = preferences.getBoolean(keyStateOfMapGrid, false),
+        stateOfMapFirstCall = preferences.getBoolean(keyStateOfMapFirstCall, false),
         shouldSeeWarning = preferences.getBoolean(keyShouldSeeWarning, true),
         shouldSeeWhatsNew = preferences.getBoolean(keyShouldSeeWhatsNew, true),
         sstvMode = preferences.getString(keySstvMode, null) ?: "Auto",
         lowElevation = Double.fromBits(preferences.getLong(keyLowElevation, 15.0.toRawBits())),
-        highElevation = Double.fromBits(preferences.getLong(keyHighElevation, 45.0.toRawBits())),
-        radarCompassOffset = preferences.getFloat(keyRadarCompassOffset, 0f),
-        radarCompassOffsetElev = preferences.getFloat(keyRadarCompassOffsetElev, 0f)
+        highElevation = Double.fromBits(preferences.getLong(keyHighElevation, 45.0.toRawBits()))
     )
     //endregion
 
@@ -373,21 +588,108 @@ class SettingsRepo(
     override val dataSourcesSettings: StateFlow<DataSourcesSettings> = _dataSourcesSettings
 
     override fun updateDataSourcesSettings(settings: DataSourcesSettings) {
+        // Normalize the enabled lists so they are positionally aligned with the URL lists.
+        // Missing entries default to enabled (true), keeping the persisted "one flag per URL"
+        // invariant intact even when a default empty list is used to construct the model.
+        val normalized = settings.copy(
+            satelliteEnabled = alignFlags(settings.satelliteUrls, settings.satelliteEnabled),
+            transceiversEnabled = alignFlags(settings.transceiversUrls, settings.transceiversEnabled)
+        )
         preferences.edit {
-            putString(keySatelliteUrls, settings.satelliteUrls.joinToString(separatorUrl))
-            putString(keyTransceiversUrls, settings.transceiversUrls.joinToString(separatorUrl))
+            putString(keySatelliteUrls, normalized.satelliteUrls.joinToString(separatorUrl))
+            putString(keyTransceiversUrls, normalized.transceiversUrls.joinToString(separatorUrl))
+            putString(keySatelliteEnabled, normalized.satelliteEnabled.joinToString(separatorComma))
+            putString(keyTransceiversEnabled, normalized.transceiversEnabled.joinToString(separatorComma))
+            putBoolean(keySatnogsTleSourceMigration, true)
         }
-        _dataSourcesSettings.value = settings
+        _dataSourcesSettings.value = normalized
     }
 
     private fun getDataSourcesSettings(): DataSourcesSettings = DataSourcesSettings(
-        satelliteUrls = preferences.getString(keySatelliteUrls, null)
-            ?.split(separatorUrl)?.filter { it.isNotBlank() }
-            ?: Sources.satelliteDataUrls,
-        transceiversUrls = preferences.getString(keyTransceiversUrls, null)
-            ?.split(separatorUrl)?.filter { it.isNotBlank() }
-            ?: Sources.transceiversDataUrls
+        satelliteUrls = getDataSourceUrls(
+            key = keySatelliteUrls,
+            defaultUrls = Sources.satelliteDataUrls.values.filter { it.isNotBlank() },
+            legacyEnabledKey = keyUseCustomTle,
+            legacyUrlKey = keyTleUrl
+        ).migrateSatnogsTleSource(),
+        transceiversUrls = getDataSourceUrls(
+            key = keyTransceiversUrls,
+            defaultUrls = Sources.transceiversDataUrls.values.filter { it.isNotBlank() },
+            legacyEnabledKey = keyUseCustomTransceivers,
+            legacyUrlKey = keyTransceiversUrl
+        ),
+        satelliteEnabled = readEnabledFlags(keySatelliteEnabled),
+        transceiversEnabled = readEnabledFlags(keyTransceiversEnabled)
     )
+
+    /** Read the persisted per-source enabled flags (empty when never stored). */
+    private fun readEnabledFlags(key: String): List<Boolean> {
+        return preferences.getString(key, null)
+            ?.split(separatorComma)
+            ?.mapNotNull { it.trim() }
+            ?.filter { it == "true" || it == "false" }
+            ?.map { it == "true" }
+            ?: emptyList()
+    }
+
+    /** Keep the flags positionally aligned with the URL list, defaulting to enabled. */
+    private fun alignFlags(urls: List<String>, flags: List<Boolean>): List<Boolean> {
+        if (flags.size >= urls.size) return flags.take(urls.size)
+        return flags + List(urls.size - flags.size) { true }
+    }
+
+    private fun getDataSourceUrls(
+        key: String,
+        defaultUrls: List<String>,
+        legacyEnabledKey: String,
+        legacyUrlKey: String
+    ): List<String> {
+        val stored = preferences.getString(key, null)
+            ?.split(separatorUrl)
+            ?.map { it.trim() }
+            ?.filter { it.isNotBlank() }
+        if (stored != null) return stored
+        val legacyCustomUrl = preferences.getString(legacyUrlKey, null)?.trim().orEmpty()
+        return if (preferences.getBoolean(legacyEnabledKey, false) && legacyCustomUrl.isNotBlank()) {
+            (defaultUrls + legacyCustomUrl).distinct()
+        } else {
+            defaultUrls
+        }
+    }
+
+    private fun List<String>.migrateSatnogsTleSource(): List<String> {
+        if (preferences.getBoolean(keySatnogsTleSourceMigration, false)) return this
+        val satnogsTleUrl = Sources.satelliteDataUrls["SatNOGS"].orEmpty()
+        if (satnogsTleUrl.isBlank() || containsSourceUrl(satnogsTleUrl)) return this
+        val celestrakSatnogsIndex = indexOfFirst { isSameSourceUrl(it, legacyCelestrakSatnogsUrl) }
+        if (celestrakSatnogsIndex < 0) return this
+
+        val migrated = toMutableList().apply { add(celestrakSatnogsIndex + 1, satnogsTleUrl) }
+        preferences.edit {
+            putString(keySatelliteUrls, migrated.joinToString(separatorUrl))
+            putBoolean(keySatnogsTleSourceMigration, true)
+        }
+        return migrated
+    }
+
+    private fun List<String>.containsSourceUrl(url: String): Boolean = any { isSameSourceUrl(it, url) }
+
+    private fun isSameSourceUrl(first: String, second: String): Boolean =
+        normalizeSourceUrl(first).equals(normalizeSourceUrl(second), ignoreCase = true)
+
+    private fun normalizeSourceUrl(url: String): String {
+        val trimmed = url.trim()
+        return if (trimmed.startsWith("http", ignoreCase = true)) trimmed else "https://$trimmed"
+    }
+    //endregion
+
+    //region # Data sources status
+    private val _dataSourcesStatus = MutableStateFlow<Map<String, Int>>(emptyMap())
+    override val dataSourcesStatus: StateFlow<Map<String, Int>> = _dataSourcesStatus
+
+    override fun updateDataSourcesStatus(status: Map<String, Int>) {
+        _dataSourcesStatus.value = status
+    }
     //endregion
 
     //region # Radio control settings
@@ -427,16 +729,29 @@ class SettingsRepo(
         baudRate = preferences.getInt(keyRadioBaudRate, 4800),
         splitMode = preferences.getBoolean(keyRadioSplitMode, false)
     )
+    //endregion
 
+    //region # Per-satellite calculator offset settings
     private val keySatelliteOffsets = "satelliteOffsets"
+    private val keyLegacySatelliteOffsetPrefix = "offset_khz_"
 
     override fun getSatelliteOffset(catnum: Int): String {
         val json = preferences.getString(keySatelliteOffsets, "{}") ?: "{}"
-        return try {
+        val stored = try {
             JSONObject(json).optString(catnum.toString(), "")
         } catch (_: Exception) {
             ""
         }
+        if (stored.isNotEmpty()) return stored
+
+        // Lazy migration from the fork's old UI-layer implementation, which stored
+        // one SharedPreferences entry per satellite directly from TransceiversPage.
+        val legacyKey = "$keyLegacySatelliteOffsetPrefix$catnum"
+        val legacy = preferences.getString(legacyKey, "").orEmpty()
+        if (legacy.isNotEmpty()) {
+            setSatelliteOffset(catnum, legacy)
+        }
+        return legacy
     }
 
     override fun setSatelliteOffset(catnum: Int, offset: String) {
@@ -446,8 +761,24 @@ class SettingsRepo(
             if (offset.isEmpty()) obj.remove(catnum.toString()) else obj.put(catnum.toString(), offset)
             obj.toString()
         } catch (_: Exception) {
-            """{"$catnum": "$offset"}"""
+            if (offset.isEmpty()) "{}" else """{"$catnum": "$offset"}"""
+        }
+        preferences.edit {
+            putString(keySatelliteOffsets, updated)
+            remove("$keyLegacySatelliteOffsetPrefix$catnum")
         }
-        preferences.edit { putString(keySatelliteOffsets, updated) }
     }
+    //endregion
+
+    //region # AMSAT status report settings
+    private val keyAmSatCallsign = "amSatCallsign"
+
+    override fun getAmSatCallsign(): String {
+        return preferences.getString(keyAmSatCallsign, "").orEmpty()
+    }
+
+    override fun setAmSatCallsign(callsign: String) {
+        preferences.edit { putString(keyAmSatCallsign, callsign.trim().uppercase(Locale.US)) }
+    }
+    //endregion
 }

core/data/src/main/java/com/rtbishop/look4sat/core/data/repository/UpdateRepository.kt

@@ -0,0 +1,106 @@
+package com.rtbishop.look4sat.core.data.repository
+
+import com.rtbishop.look4sat.core.domain.model.LatestRelease
+import com.rtbishop.look4sat.core.domain.repository.IUpdateRepository
+import com.rtbishop.look4sat.core.domain.source.IRemoteSource
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
+import java.io.File
+
+class UpdateRepository(
+    private val remoteSource: IRemoteSource
+) : IUpdateRepository {
+
+    override suspend fun getLatestRelease(): LatestRelease? = withContext(Dispatchers.IO) {
+        // Use the GitHub releases web page instead of the REST API endpoint:
+        // the API endpoint is rate-limited to 60 requests/hour per IP, which is
+        // quickly exhausted on shared egress IPs (e.g. VPN proxies), causing 403
+        // failures. The web endpoint redirects to the latest tag with no such limit.
+        // When GitHub is unreachable (common on mainland-China networks without a
+        // proxy), fall back to community GitHub accelerator mirrors that proxy the
+        // same page; each mirror resolves the identical tag and asset URLs.
+        for (baseUrl in LATEST_RELEASE_URLS) {
+            val result = remoteSource.getNetworkStream(baseUrl)
+            val stream = result.stream ?: continue
+            val parsed = try {
+                parseRelease(stream.bufferedReader().use { it.readText() }, baseUrl)
+            } catch (e: Exception) {
+                println("UpdateRepository parse failure: $e")
+                null
+            }
+            if (parsed != null) return@withContext parsed
+        }
+        null
+    }
+
+    override suspend fun downloadApk(url: String, dest: File): Boolean = withContext(Dispatchers.IO) {
+        if (url.isBlank()) return@withContext false
+        val result = remoteSource.getNetworkStream(url)
+        val stream = result.stream ?: return@withContext false
+        try {
+            dest.outputStream().use { out -> stream.use { it.copyTo(out) } }
+            true
+        } catch (e: Exception) {
+            println("UpdateRepository download failure: $e")
+            false
+        }
+    }
+
+    private fun parseRelease(html: String, sourceUrl: String): LatestRelease? {
+        // The redirect target is the latest release's tag page. Extract the tag
+        // from the og:url meta tag ("…/releases/tag/v4.4.6-ba7opf.8") — stable and
+        // unambiguous. The <title> also holds the release name, but that is free
+        // text and cannot be used to build the asset URL.
+        val ogUrl = Regex("<meta\\s+property=\"og:url\"\\s+content=\"([^\"]*)\"").find(html)
+            ?.groupValues?.get(1) ?: return null
+        val tag = Regex("/releases/tag/(v[0-9][0-9A-Za-z.\\-]*)$").find(ogUrl)
+            ?.groupValues?.get(1) ?: return null
+        val title = Regex("<title>(.*?)</title>", RegexOption.DOT_MATCHES_ALL)
+            .find(html)?.groupValues?.get(1)?.trim()
+            ?.substringBefore("·")?.removePrefix("Release")?.trim() ?: tag
+        // Release notes live in the page's markdown-body section (first occurrence
+        // is the release description). Strip HTML tags for plain-text display.
+        val raw = Regex("<div[^>]*class=\"[^\"]*markdown-body[^\"]*\"[^>]*>(.*?)</div>", RegexOption.DOT_MATCHES_ALL)
+            .find(html)?.groupValues?.get(1) ?: ""
+        val body = raw.replace(Regex("<[^>]+>"), "")
+            .replace("&lt;", "<").replace("&gt;", ">").replace("&amp;", "&")
+            .replace("&quot;", "\"").replace("&#39;", "'")
+            .trim()
+        // The release APK asset naming: Look4Sat-<tag without leading v>.apk
+        // (since v4.4.6-ba7opf.9.9 the releases are uploaded with the bare
+        // versioned filename, no "-release" suffix). When the page was fetched
+        // through an accelerator mirror (https://<mirror>/https://github.com/...),
+        // download through the same mirror — raw github.com is unreachable on the
+        // networks that needed the mirror in the first place.
+        val mirrorPrefix = sourceUrl.substringBefore("https://github.com")
+        val apkName = "Look4Sat-${tag.removePrefix("v")}.apk"
+        val apkUrl = if (mirrorPrefix.isEmpty()) {
+            "$DOWNLOAD_BASE_URL/$tag/$apkName"
+        } else {
+            "${mirrorPrefix}https://github.com/atsunatsu/Look4Sat/releases/download/$tag/$apkName"
+        }
+        return LatestRelease(
+            versionTag = tag,
+            title = title,
+            body = body,
+            apkUrl = apkUrl
+        )
+    }
+
+    private companion object {
+        // Web pages are used instead of api.github.com to avoid the 60 req/hour
+        // anonymous rate limit (see getLatestRelease above). The GitHub URL is
+        // tried first; if it is unreachable (no proxy on mainland networks) the
+        // accelerator mirrors are tried in order. Download URLs always point at
+        // the mirrors too — raw github.com release downloads are equally blocked
+        // without a proxy, so a mirror-resolved tag must be downloaded via the
+        // same mirror.
+        val LATEST_RELEASE_URLS = listOf(
+            "https://github.com/atsunatsu/Look4Sat/releases/latest",
+            "https://ghfast.top/https://github.com/atsunatsu/Look4Sat/releases/latest",
+            "https://gh.llkk.cc/https://github.com/atsunatsu/Look4Sat/releases/latest",
+            "https://github.moeyy.xyz/https://github.com/atsunatsu/Look4Sat/releases/latest"
+        )
+        const val DOWNLOAD_BASE_URL = "https://github.com/atsunatsu/Look4Sat/releases/download"
+    }
+}

core/data/src/main/java/com/rtbishop/look4sat/core/data/repository/WavelogRepository.kt

@@ -0,0 +1,97 @@
+/*
+ * Look4Sat. Amateur radio satellite tracker and pass predictor.
+ * Copyright (C) 2019-2026 Arty Bishop and contributors.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package com.rtbishop.look4sat.core.data.repository
+
+import com.rtbishop.look4sat.core.domain.repository.IWavelogRepository
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
+import org.json.JSONArray
+import org.json.JSONObject
+
+/**
+ * Fetches the list of worked gridsquares from a self-hosted Wavelog instance.
+ *
+ * Uses the Wavelog v1 API endpoint (verified against Wavelog 3.0.2):
+ *   POST {base}/index.php/api/logbook_get_worked_grids
+ *   Body: {"key": "<api key>", "logbook_id": "<logbook id>"}
+ *   Response 201: JSON array of 4-char gridsquares, e.g. ["JN47","JO30"]
+ *   (see Wavelog Api.php logbook_get_worked_grids / Api_model::get_grids_worked_in_logbook)
+ *
+ * The token field carries "<api_key>:<logbook_id>" so one credential line
+ * configures both values (the dialog explains this to the user).
+ */
+class WavelogRepository : IWavelogRepository {
+
+    override suspend fun fetchWorkedGrids(url: String, token: String): Set<String>? = withContext(Dispatchers.IO) {
+        val parts = token.trim().split(":")
+        val apiKey = parts.getOrNull(0)?.trim().orEmpty()
+        val logbookId = parts.getOrNull(1)?.trim().orEmpty()
+        if (url.isBlank() || apiKey.isBlank() || logbookId.isBlank()) return@withContext null
+        val base = url.trim().trimEnd('/')
+        val requestUrl = "$base/index.php/api/logbook_get_worked_grids"
+        try {
+            val connection = java.net.URL(requestUrl).openConnection() as java.net.HttpURLConnection
+            connection.connectTimeout = 10_000
+            connection.readTimeout = 15_000
+            connection.requestMethod = "POST"
+            connection.doOutput = true
+            connection.setRequestProperty("Content-Type", "application/json")
+            val body = JSONObject().apply {
+                put("key", apiKey)
+                put("logbook_id", logbookId)
+            }.toString().toByteArray()
+            connection.outputStream.use { it.write(body) }
+            val code = connection.responseCode
+            if (code !in 200..299) {
+                connection.disconnect()
+                return@withContext null
+            }
+            val response = connection.inputStream.bufferedReader().use { it.readText() }
+            connection.disconnect()
+            parseWorkedGrids(response)
+        } catch (e: Exception) {
+            println("WavelogRepository fetch failure: $e")
+            null
+        }
+    }
+
+    internal fun parseWorkedGrids(body: String): Set<String>? {
+        return try {
+            val array = when {
+                body.trimStart().startsWith("[") -> JSONArray(body)
+                else -> {
+                    // Tolerate {"grids": [...]} wrappers too
+                    JSONObject(body).optJSONArray("grids") ?: return null
+                }
+            }
+            val result = mutableSetOf<String>()
+            for (i in 0 until array.length()) {
+                val grid = array.optString(i, "").trim().uppercase()
+                // Keep only well-formed 4-character Maidenhead squares (e.g. OL62)
+                if (grid.length == 4 && grid[0] in 'A'..'R' && grid[1] in 'A'..'R'
+                    && grid[2] in '0'..'9' && grid[3] in '0'..'9'
+                ) {
+                    result.add(grid)
+                }
+            }
+            result
+        } catch (_: Exception) {
+            null
+        }
+    }
+}

core/data/src/main/java/com/rtbishop/look4sat/core/data/source/LocalSource.kt

@@ -51,12 +51,12 @@ class LocalSource(private val look4SatDao: Look4SatDao) : ILocalSource {
 
     private fun FrameworkEntry.toDomain() = OrbitalData(
         this.name, this.epoch, this.meanmo, this.eccn, this.incl,
-        this.raan, this.argper, this.meanan, this.catnum, this.bstar
+        this.raan, this.argper, this.meanan, this.catnum, this.bstar, this.ndot
     )
 
     private fun OrbitalData.toEntity() = FrameworkEntry(
         this.name, this.epoch, this.meanmo, this.eccn, this.incl,
-        this.raan, this.argper, this.meanan, this.catnum, this.bstar
+        this.raan, this.argper, this.meanan, this.catnum, this.bstar, this.ndot
     )
 
     private fun List<OrbitalData>.toEntity() = this.map { item -> item.toEntity() }
@@ -73,20 +73,22 @@ class LocalSource(private val look4SatDao: Look4SatDao) : ILocalSource {
         return look4SatDao.getRadiosWithId(id).toDomainRadios()
     }
 
-    override suspend fun insertRadios(radios: List<SatRadio>) {
-        look4SatDao.insertRadios(radios.toFrameworkRadios())
+    override suspend fun insertRadios(radios: List<SatRadio>, isCustom: Boolean) {
+        look4SatDao.insertRadios(radios.map { it.copy(isCustom = isCustom) }.toFrameworkRadios())
     }
 
+    override suspend fun deleteManagedRadios() = look4SatDao.deleteManagedRadios()
+
     override suspend fun deleteRadios() = look4SatDao.deleteRadios()
 
     private fun DomainRadio.toFramework() = FrameworkRadio(
         this.uuid, this.info, this.isAlive, this.downlinkLow, this.downlinkHigh, this.downlinkMode,
-        this.uplinkLow, this.uplinkHigh, this.uplinkMode, this.isInverted, this.catnum
+        this.uplinkLow, this.uplinkHigh, this.uplinkMode, this.isInverted, this.catnum, this.isCustom
     )
 
     private fun FrameworkRadio.toDomain() = DomainRadio(
         this.uuid, this.info, this.isAlive, this.downlinkLow, this.downlinkHigh, this.downlinkMode,
-        this.uplinkLow, this.uplinkHigh, this.uplinkMode, this.isInverted, this.catnum
+        this.uplinkLow, this.uplinkHigh, this.uplinkMode, this.isInverted, this.catnum, this.isCustom
     )
 
     private fun List<DomainRadio>.toFrameworkRadios() = this.map { radio -> radio.toFramework() }

core/data/src/main/java/com/rtbishop/look4sat/core/data/source/RemoteSource.kt

@@ -20,10 +20,13 @@ package com.rtbishop.look4sat.core.data.source
 import android.content.ContentResolver
 import androidx.core.net.toUri
 import com.rtbishop.look4sat.core.domain.source.IRemoteSource
+import com.rtbishop.look4sat.core.domain.source.NetworkResult
 import kotlinx.coroutines.CoroutineDispatcher
 import kotlinx.coroutines.withContext
+import okhttp3.MediaType.Companion.toMediaType
 import okhttp3.OkHttpClient
 import okhttp3.Request
+import okhttp3.RequestBody.Companion.toRequestBody
 import java.io.InputStream
 
 class RemoteSource(
@@ -42,20 +45,26 @@ class RemoteSource(
         }
     }
 
-    override suspend fun getNetworkStream(url: String): InputStream? = withContext(dispatcher) {
+    override suspend fun getNetworkStream(url: String): NetworkResult = withContext(dispatcher) {
         try {
             val networkRequest = Request.Builder().url(url).build()
             val response = httpClient.newCall(networkRequest).execute()
             if (!response.isSuccessful) {
+                val code = response.code
                 response.close()
-                return@withContext null
+                return@withContext NetworkResult(code, null)
             }
-            // Return the body stream directly as the caller is responsible for closing it
-            // That returns the connection to OkHttp's pool
-            response.body.byteStream().buffered()
+            // Return the body stream directly as the caller is responsible for closing it.
+            // Closing the stream returns the connection to OkHttp's pool.
+            val body = response.body
+            if (body == null) {
+                response.close()
+                return@withContext NetworkResult(response.code, null)
+            }
+            NetworkResult(response.code, body.byteStream().buffered())
         } catch (exception: Exception) {
             println("RemoteSource network stream exception: $exception")
-            null
+            NetworkResult(NetworkResult.CONNECTION_ERROR, null)
         }
     }
 
@@ -90,4 +99,21 @@ class RemoteSource(
             null
         }
     }
+
+    override suspend fun submitAmSatReport(payloadJson: String): Pair<Int, String>? = withContext(dispatcher) {
+        try {
+            val body = payloadJson.toRequestBody("application/json; charset=utf-8".toMediaType())
+            val request = Request.Builder()
+                .url("https://www.amsat.org/status/api/v1/reports.php")
+                .header("User-Agent", "Look4Sat")
+                .post(body)
+                .build()
+            httpClient.newCall(request).execute().use { response ->
+                response.code to response.body.string()
+            }
+        } catch (exception: Exception) {
+            println("RemoteSource submitAmSatReport exception: $exception")
+            null
+        }
+    }
 }

core/data/src/test/java/com/rtbishop/look4sat/core/data/repository/AmSatRepositoryTest.kt

@@ -0,0 +1,171 @@
+package com.rtbishop.look4sat.core.data.repository
+
+import com.rtbishop.look4sat.core.domain.model.SatStatus
+import com.rtbishop.look4sat.core.domain.model.SatStatusPage
+import com.rtbishop.look4sat.core.domain.source.IRemoteSource
+import com.rtbishop.look4sat.core.domain.source.NetworkResult
+import kotlinx.coroutines.async
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.test.runTest
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertNull
+import org.junit.Assert.assertSame
+import org.junit.Test
+import java.io.InputStream
+import java.text.SimpleDateFormat
+import java.util.Date
+import java.util.Locale
+import java.util.TimeZone
+
+class AmSatRepositoryTest {
+
+    @Test
+    fun fetchStatusReturnsSeededCacheUntilCacheIsCleared() = runTest {
+        val remoteSource = FakeAmSatRemoteSource()
+        val repository = AmSatRepository(remoteSource)
+        val cachedPage = SatStatusPage(
+            fetchedAtUtcMs = 123L,
+            statuses = listOf(SatStatus(name = "AO-7", days = emptyList())),
+            reports = emptyMap()
+        )
+        repository.seedStatusCache(cachedPage)
+
+        val firstPage = repository.fetchStatus()
+        val secondPage = repository.fetchStatus()
+
+        assertSame(cachedPage, firstPage)
+        assertSame(cachedPage, secondPage)
+        assertSame(cachedPage, repository.getCachedStatus())
+        assertEquals(0, remoteSource.catalogRequests)
+        assertEquals(0, remoteSource.reportRequests)
+
+        repository.clearStatusCache()
+        assertNull(repository.getCachedStatus())
+        repository.fetchStatus()
+
+        assertEquals(1, remoteSource.catalogRequests)
+        assertEquals(1, remoteSource.reportRequests)
+    }
+
+    @Test
+    fun forceRefreshBypassesCachedPage() = runTest {
+        val remoteSource = FakeAmSatRemoteSource()
+        val repository = AmSatRepository(remoteSource)
+        repository.seedStatusCache(
+            SatStatusPage(
+                fetchedAtUtcMs = 123L,
+                statuses = listOf(SatStatus(name = "AO-7", days = emptyList())),
+                reports = emptyMap()
+            )
+        )
+
+        repository.fetchStatus(forceRefresh = true)
+
+        assertEquals(1, remoteSource.catalogRequests)
+        assertEquals(1, remoteSource.reportRequests)
+    }
+
+    @Test
+    fun fetchStatusSharesStartupPrefetchRequest() = runTest {
+        val remoteSource = FakeAmSatRemoteSource(responseDelayMillis = 50)
+        val repository = AmSatRepository(remoteSource)
+
+        val prefetch = async { repository.prefetchStatus() }
+        val pageFetch = async { repository.fetchStatus() }
+        prefetch.await()
+        val page = pageFetch.await()
+
+        assertSame(page, repository.getCachedStatus())
+        assertEquals(1, remoteSource.catalogRequests)
+        assertEquals(1, remoteSource.reportRequests)
+    }
+
+    @Test
+    fun buildStatusesStreakCountsConsecutiveSameStatusReportsPerDay() = runTest {
+        val nowSec = System.currentTimeMillis() / 1000
+        val remoteSource = FakeAmSatRemoteSource(
+            reportsJson = amSatReportsJson(
+                // 当天(day 0)最新槽(slot 0)混合状态:最新 Heard、次新 Heard、再旧 Not Heard → 连续=2
+                report("r1", "AO-7", "Heard", nowSec - 3600),
+                report("r2", "AO-7", "Heard", nowSec - 5400),
+                report("r3", "AO-7", "Not Heard", nowSec - 7000),
+                // 空时段(无报告)不打断:slot 8 的 Heard 更旧,不应计入(被 r3 打断)
+                report("r4", "AO-7", "Heard", nowSec - 63000),
+                // 前一天(day 1):最新 Heard,更旧的 Not Heard → 连续=1,且不跨天合并
+                report("r5", "AO-7", "Heard", nowSec - 90000),
+                report("r6", "AO-7", "Not Heard", nowSec - 100000)
+                // day 2 无报告 → 0
+            )
+        )
+        val repository = AmSatRepository(remoteSource)
+
+        val page = repository.fetchStatus()
+        val status = page?.statuses?.single()
+        assertEquals("AO-7", status?.name)
+        assertEquals(3, status?.days?.size)
+
+        assertEquals(2, status?.days?.get(0)?.streakCount)
+        assertEquals(1, status?.days?.get(1)?.streakCount)
+        assertEquals(0, status?.days?.get(2)?.streakCount)
+    }
+
+    @Test
+    fun buildStatusesStreakCountsAllReportsWhenStatusNeverChanges() = runTest {
+        val nowSec = System.currentTimeMillis() / 1000
+        val remoteSource = FakeAmSatRemoteSource(
+            reportsJson = amSatReportsJson(
+                report("r1", "AO-7", "Heard", nowSec - 1800),
+                report("r2", "AO-7", "Heard", nowSec - 3600),
+                report("r3", "AO-7", "Heard", nowSec - 5400),
+                report("r4", "AO-7", "Heard", nowSec - 30000)
+            )
+        )
+        val repository = AmSatRepository(remoteSource)
+
+        val page = repository.fetchStatus()
+        assertEquals(4, page?.statuses?.single()?.days?.get(0)?.streakCount)
+    }
+}
+
+private fun AmSatRepository.seedStatusCache(page: SatStatusPage) {
+    val cacheField = AmSatRepository::class.java.getDeclaredField("statusCache")
+    cacheField.isAccessible = true
+    cacheField.set(this, page)
+}
+
+private class FakeAmSatRemoteSource(
+    private val responseDelayMillis: Long = 0L,
+    private val reportsJson: String = """{"data":[]}"""
+) : IRemoteSource {
+    var catalogRequests = 0
+    var reportRequests = 0
+
+    override suspend fun getFileStream(uri: String): InputStream? = null
+
+    override suspend fun getNetworkStream(url: String): NetworkResult = NetworkResult(404, null)
+
+    override suspend fun getAmSatCatalog(): String? {
+        if (responseDelayMillis > 0L) delay(responseDelayMillis)
+        catalogRequests += 1
+        return """{"data":[{"name":"AO-7"}]}"""
+    }
+
+    override suspend fun getAmSatReports(hours: Int, limit: Int): String? {
+        if (responseDelayMillis > 0L) delay(responseDelayMillis)
+        reportRequests += 1
+        return reportsJson
+    }
+
+    override suspend fun submitAmSatReport(payloadJson: String): Pair<Int, String>? = null
+}
+
+private fun amSatReportsJson(vararg reports: String): String =
+    """{"data":[${reports.joinToString(",")}]}"""
+
+private fun report(id: String, name: String, status: String, epochSec: Long): String =
+    """{"id":"$id","name":"$name","callsign":"BA7OPF","report":"$status","grid_square":"OL62","reported_time":"${isoUtc(epochSec)}"}"""
+
+private fun isoUtc(epochSec: Long): String =
+    SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'", Locale.US).apply {
+        timeZone = TimeZone.getTimeZone("UTC")
+    }.format(Date(epochSec * 1000))

core/data/src/test/java/com/rtbishop/look4sat/core/data/repository/DatabaseRepoTest.kt

@@ -19,6 +19,7 @@ package com.rtbishop.look4sat.core.data.repository
 
 import com.rtbishop.look4sat.core.domain.model.DataSourcesSettings
 import com.rtbishop.look4sat.core.domain.model.DatabaseState
+import com.rtbishop.look4sat.core.domain.model.GridQso
 import com.rtbishop.look4sat.core.domain.model.OtherSettings
 import com.rtbishop.look4sat.core.domain.model.PassesSettings
 import com.rtbishop.look4sat.core.domain.model.RCSettings
@@ -31,6 +32,8 @@ import com.rtbishop.look4sat.core.domain.predict.OrbitalObject
 import com.rtbishop.look4sat.core.domain.repository.ISettingsRepo
 import com.rtbishop.look4sat.core.domain.source.ILocalSource
 import com.rtbishop.look4sat.core.domain.source.IRemoteSource
+import com.rtbishop.look4sat.core.domain.source.NetworkResult
+import com.rtbishop.look4sat.core.domain.source.Sources
 import com.rtbishop.look4sat.core.domain.utility.DataParser
 import kotlinx.coroutines.ExperimentalCoroutinesApi
 import kotlinx.coroutines.flow.MutableStateFlow
@@ -62,6 +65,7 @@ class DatabaseRepoTest {
 
         assertEquals(1, localSource.insertedEntries.size)
         assertEquals(25544, localSource.insertedEntries.first().catnum)
+        assertEquals(listOf(25544), settingsRepo.satelliteTypeIdsByType["Other"])
         assertTrue(settingsRepo.databaseState.value.numberOfSatellites > 0)
     }
 
@@ -99,6 +103,28 @@ class DatabaseRepoTest {
         repository.updateFromRemote()
 
         assertTrue(localSource.insertedEntries.any { it.catnum == 25544 })
+        assertEquals(listOf(25544), settingsRepo.satelliteTypeIdsByType["Other"])
+    }
+
+    @Test
+    fun `remote update imports satellites from real SatNOGS TLE source`() = runTest(dispatcher) {
+        val satnogsUrl = Sources.satelliteDataUrls.getValue("SatNOGS")
+        val localSource = FakeLocalSource()
+        val remoteSource = FakeRemoteSource().apply {
+            networkStreams[satnogsUrl] = { jamxTleStream() }
+        }
+        val settingsRepo = FakeSettingsRepo(
+            dataSources = DataSourcesSettings(
+                satelliteUrls = listOf(satnogsUrl),
+                transceiversUrls = emptyList()
+            )
+        )
+        val repository = DatabaseRepo(dispatcher, dataParser, localSource, remoteSource, settingsRepo)
+
+        repository.updateFromRemote()
+
+        assertTrue(localSource.insertedEntries.any { it.name == "JAMX-0825b" && it.catnum == 98248 })
+        assertEquals(listOf(98248), settingsRepo.satelliteTypeIdsByType["SatNOGS"])
     }
 
     private fun validCsvStream(): InputStream = """
@@ -111,6 +137,12 @@ class DatabaseRepoTest {
         1 25544U 98067A   21320.51955234  .00001288  00000+0  31985-4 0  9990
         2 25544  51.6447 309.4881 0004694 203.6966 299.8876 15.48582035312205
     """.trimIndent().byteInputStream()
+
+    private fun jamxTleStream(): InputStream = """
+        JAMX-0825b
+        1 98248U          26237.16675926  .00015724  00000-0  97477-3 0 00013
+        2 98248 097.5373 310.9694 0011309 278.1232 340.7230 15.09766181000012
+    """.trimIndent().byteInputStream()
 }
 
 private class FakeRemoteSource : IRemoteSource {
@@ -119,11 +151,14 @@ private class FakeRemoteSource : IRemoteSource {
 
     override suspend fun getFileStream(uri: String): InputStream? = fileStreams[uri]?.invoke()
 
-    override suspend fun getNetworkStream(url: String): InputStream? = networkStreams[url]?.invoke()
+    override suspend fun getNetworkStream(url: String): NetworkResult =
+        networkStreams[url]?.let { NetworkResult(200, it()) } ?: NetworkResult(404, null)
 
     override suspend fun getAmSatCatalog(): String? = null
 
     override suspend fun getAmSatReports(hours: Int, limit: Int): String? = null
+
+    override suspend fun submitAmSatReport(payloadJson: String): Pair<Int, String>? = null
 }
 
 private class FakeLocalSource : ILocalSource {
@@ -150,8 +185,12 @@ private class FakeLocalSource : ILocalSource {
 
     override suspend fun getRadiosWithId(id: Int): List<SatRadio> = emptyList()
 
-    override suspend fun insertRadios(radios: List<SatRadio>) {
-        insertedRadios += radios
+    override suspend fun insertRadios(radios: List<SatRadio>, isCustom: Boolean) {
+        insertedRadios += radios.map { it.copy(isCustom = isCustom) }
+    }
+
+    override suspend fun deleteManagedRadios() {
+        insertedRadios.removeAll { !it.isCustom }
     }
 
     override suspend fun deleteRadios() {
@@ -165,10 +204,10 @@ private class FakeSettingsRepo(dataSources: DataSourcesSettings = defaultDataSou
 
     override val selectedIds: StateFlow<List<Int>> = MutableStateFlow(emptyList())
 
-    override val selectedSatModes: StateFlow<List<String>> = MutableStateFlow(emptyList())
+    override val selectedTypes: StateFlow<List<String>> = MutableStateFlow(emptyList())
 
     override val passesSettings: StateFlow<PassesSettings> = MutableStateFlow(
-        PassesSettings(hoursAhead = 24, minElevation = 0.0)
+        PassesSettings(hoursAhead = 24, minElevation = 0.0, selectedModes = emptyList())
     )
 
     override val stationPosition: StateFlow<GeoPos> = MutableStateFlow(GeoPos(0.0, 0.0))
@@ -180,7 +219,10 @@ private class FakeSettingsRepo(dataSources: DataSourcesSettings = defaultDataSou
     )
 
     override val otherSettings: StateFlow<OtherSettings> = MutableStateFlow(
-        OtherSettings(false, false, false, false, false, false, false, false)
+        OtherSettings(
+            false, false, false, false, false, false, false,
+            shouldSeeWarning = false, shouldSeeWhatsNew = false
+        )
     )
 
     override val dataSourcesSettings: MutableStateFlow<DataSourcesSettings> = MutableStateFlow(dataSources)
@@ -189,9 +231,11 @@ private class FakeSettingsRepo(dataSources: DataSourcesSettings = defaultDataSou
         RadioControlSettings(false, RadioControlSettings.MODEL_YAESU_FT817, "", "", "", "", 9600)
     )
 
+    val satelliteTypeIdsByType = mutableMapOf<String, List<Int>>()
+
     override fun setSelectedIds(ids: List<Int>) = Unit
 
-    override fun setSelectedSatModes(modes: List<String>) = Unit
+    override fun setSelectedTypes(types: List<String>) = Unit
 
     override fun setPassesSettings(settings: PassesSettings) = Unit
 
@@ -201,6 +245,11 @@ private class FakeSettingsRepo(dataSources: DataSourcesSettings = defaultDataSou
 
     override fun setStationPosition(locator: String): Boolean = true
 
+    override fun getSatelliteTypesIds(types: List<String>): List<Int> = emptyList()
+
+    override fun setSatelliteTypeIds(type: String, ids: List<Int>) {
+        satelliteTypeIdsByType[type] = ids
+    }
 
     override fun updateDatabaseState(state: DatabaseState) {
         databaseState.value = state
@@ -214,11 +263,55 @@ private class FakeSettingsRepo(dataSources: DataSourcesSettings = defaultDataSou
         dataSourcesSettings.value = settings
     }
 
+    override val dataSourcesStatus: StateFlow<Map<String, Int>> = MutableStateFlow(emptyMap())
+
+    override fun updateDataSourcesStatus(status: Map<String, Int>) {
+        (dataSourcesStatus as? MutableStateFlow)?.value = status
+    }
+
     override fun updateRadioControlSettings(settings: RadioControlSettings) = Unit
 
     override fun getSatelliteOffset(catnum: Int): String = ""
 
     override fun setSatelliteOffset(catnum: Int, offset: String) = Unit
+
+    override fun getAmSatCallsign(): String = ""
+
+    override fun setAmSatCallsign(callsign: String) = Unit
+
+    override val wavelogSettings: StateFlow<com.rtbishop.look4sat.core.domain.model.WavelogSettings> =
+        MutableStateFlow(com.rtbishop.look4sat.core.domain.model.WavelogSettings())
+
+    override fun updateWavelogSettings(settings: com.rtbishop.look4sat.core.domain.model.WavelogSettings) = Unit
+
+    override fun getWorkedGrids(): Set<String> = emptySet()
+
+    private val workedGrids = MutableStateFlow(emptySet<String>())
+
+    override fun setWorkedGrids(grids: Set<String>) {
+        workedGrids.value = grids
+    }
+
+    override val lotwSettings: StateFlow<com.rtbishop.look4sat.core.domain.model.LoTWSettings> =
+        MutableStateFlow(com.rtbishop.look4sat.core.domain.model.LoTWSettings())
+
+    override fun updateLoTWSettings(settings: com.rtbishop.look4sat.core.domain.model.LoTWSettings) = Unit
+    override fun getLastLotwSyncDate(): String = ""
+    override fun setLastLotwSyncDate(date: String) = Unit
+    override fun getLastLotwSyncCallsign(): String = ""
+    override fun setLastLotwSyncCallsign(callsign: String) = Unit
+
+    override fun getWorkedGridQsos(): Map<String, List<com.rtbishop.look4sat.core.domain.model.GridQso>> = emptyMap()
+
+    override fun setWorkedGridQsos(qsos: Map<String, List<com.rtbishop.look4sat.core.domain.model.GridQso>>) = Unit
+
+    override fun getRoamedGrids(): Set<String> = emptySet()
+
+    private val roamedGrids = MutableStateFlow(emptySet<String>())
+
+    override fun setRoamedGrids(grids: Set<String>) {
+        roamedGrids.value = grids
+    }
 }
 
 private fun defaultDataSourcesSettings(): DataSourcesSettings {

core/data/src/test/java/com/rtbishop/look4sat/core/data/repository/LoTWRepositoryTest.kt

@@ -0,0 +1,312 @@
+package com.rtbishop.look4sat.core.data.repository
+
+import com.rtbishop.look4sat.core.domain.repository.LoTWResult
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertNull
+import org.junit.Assert.assertTrue
+import org.junit.Test
+
+class LoTWRepositoryTest {
+
+    private val repo = LoTWRepository()
+
+    private fun report(vararg records: String): String =
+        buildString {
+            append("<ADIF_VERS:5>3.1.4\n")
+            append("<PROGRAMID:8>look4sat\n")
+            append("<eoh>\n")
+            records.forEach { append(it).append("\n") }
+        }
+
+    @Test
+    fun parseRejectsBodyWithoutEoh() {
+        assertNull(repo.parseConfirmedGrids("<HTML>Username/password incorrect</HTML>"))
+    }
+
+    @Test
+    fun parseCollectsOnlySatelliteGrids() {
+        // Satellite QSO: PROP_MODE SAT, confirmed, opponent grid.
+        val satQso = "<CALL:6>BA7OPF\n" +
+            "<QSO_DATE:8>20260820\n" +
+            "<PROP_MODE:3>SAT\n" +
+            "<SAT_NAME:5>FO-29\n" +
+            "<GRIDSQUARE:4>NL47\n" +
+            "<EOR>\n"
+        // Ground QSO: same grid but no PROP_MODE -> must be excluded.
+        val groundQso = "<CALL:6>BA7OPF\n" +
+            "<QSO_DATE:8>20260821\n" +
+            "<GRIDSQUARE:4>NL47\n" +
+            "<EOR>\n"
+        val result = repo.parseConfirmedGrids(report(satQso, groundQso))
+        assertEquals(setOf("NL47"), result)
+    }
+
+    @Test
+    fun parseSupportsVuccGridPairsAndSixCharGrids() {
+        val satQso = "<PROP_MODE:3>SAT\n" +
+            "<SAT_NAME:5>SO-50\n" +
+            "<GRIDSQUARE:6>OM60IL\n" +
+            "<VUCC_GRIDS:11>EN52en,EN53fa\n" +
+            "<EOR>\n"
+        val result = repo.parseConfirmedGrids(report(satQso))
+        assertEquals(setOf("OM60", "EN52", "EN53"), result)
+    }
+
+    @Test
+    fun parsePropModeDoesNotLeakAcrossRecords() {
+        // PROP_MODE SAT record first, then a ground QSO with a grid — the second
+        // record must not inherit the satellite flag after its own <EOR>.
+        val satQso = "<PROP_MODE:3>SAT\n<GRIDSQUARE:4>OL62\n<EOR>\n"
+        val groundQso = "<GRIDSQUARE:4>PM00\n<EOR>\n"
+        val result = repo.parseConfirmedGrids(report(satQso, groundQso))
+        assertEquals(setOf("OL62"), result)
+    }
+
+    @Test
+    fun parseHandlesAlphabeticalFieldOrder() {
+        // Real lotwreport.adi emits fields in ALPHABETICAL order: GRIDSQUARE (G)
+        // and VUCC_GRIDS come BEFORE PROP_MODE (P) inside each record. The old
+        // sequential gate (add only while propMode == SAT) dropped every grid on
+        // real reports — the buffered parser must collect them regardless of
+        // field order and filter at <EOR>.
+        val satQso = "<CALL:6>BA7OPF\n" +
+            "<GRIDSQUARE:4>NL47\n" +
+            "<MODE:3>FM\n" +
+            "<PROP_MODE:3>SAT\n" +
+            "<SAT_NAME:5>FO-29\n" +
+            "<VUCC_GRIDS:11>EN52en,EN53fa\n" +
+            "<EOR>\n"
+        val groundQso = "<CALL:6>BA7OPF\n" +
+            "<GRIDSQUARE:4>PM95\n" +
+            "<QSO_DATE:8>20260821\n" +
+            "<EOR>\n"
+        val result = repo.parseConfirmedGrids(report(satQso, groundQso))
+        assertEquals(setOf("NL47", "EN52", "EN53"), result)
+    }
+
+    @Test
+    fun parseReturnsEmptySetForReportWithoutGrids() {
+        val satQso = "<PROP_MODE:3>SAT\n<SAT_NAME:5>AO-07\n<EOR>\n"
+        assertEquals(emptySet<String>(), repo.parseConfirmedGrids(report(satQso)))
+    }
+
+    // region parseConfirmedGridQsos
+
+    private val satQsoFull = "<CALL:5>A50QO\n" +
+        "<QSO_DATE:8>20260820\n" +
+        "<TIME_ON:6>113045\n" +
+        "<PROP_MODE:3>SAT\n" +
+        "<SAT_NAME:5>FO-29\n" +
+        "<MODE:2>CW\n" +
+        "<BAND:3>70CM\n" +
+        "<BAND_RX:3>2M\n" +
+        "<GRIDSQUARE:4>NL47\n" +
+        "<EOR>\n"
+
+    @Test
+    fun parseQsosExtractsSatelliteDetail() {
+        val result = repo.parseConfirmedGridQsos(report(satQsoFull))!!
+        val qsos = result["NL47"]!!
+        assertEquals(1, qsos.size)
+        val qso = qsos[0]
+        assertEquals("A50QO", qso.call)
+        assertEquals("FO-29", qso.satName)
+        assertEquals("CW", qso.mode)
+        assertEquals("2M", qso.bandUp)
+        assertEquals("70CM", qso.bandDown)
+        assertEquals("V/U", qso.bandLabel)
+        assertEquals(2026, java.time.Instant.ofEpochMilli(qso.epochMs).atZone(java.time.ZoneOffset.UTC).year)
+    }
+
+    @Test
+    fun parseQsosExcludesGroundQsos() {
+        val groundQso = "<CALL:6>BA7OPF\n<QSO_DATE:8>20260821\n<GRIDSQUARE:4>NL47\n<EOR>\n"
+        val result = repo.parseConfirmedGridQsos(report(satQsoFull, groundQso))!!
+        assertEquals(1, result["NL47"]!!.size)
+    }
+
+    @Test
+    fun parseQsosVuccPairFeedsBothGrids() {
+        val qso = "<PROP_MODE:3>SAT\n<SAT_NAME:5>SO-50\n" +
+            "<QSO_DATE:8>20260819\n<TIME_ON:4>1231\n" +
+            "<VUCC_GRIDS:11>EN52en,EN53fa\n<EOR>\n"
+        val result = repo.parseConfirmedGridQsos(report(qso))!!
+        assertEquals(setOf("EN52", "EN53"), result.keys)
+        assertEquals(result["EN52"]!!.first(), result["EN53"]!!.first())
+    }
+
+    @Test
+    fun parseQsosVuccQuadrupleFeedsAllFourGrids() {
+        // VUCC allows up to four grids in one contact.
+        val qso = "<PROP_MODE:3>SAT\n<SAT_NAME:5>SO-50\n" +
+            "<QSO_DATE:8>20260819\n<TIME_ON:4>1231\n" +
+            "<VUCC_GRIDS:23>EN52en,EN53fa,EN42gj,EN43kh\n<EOR>\n"
+        val result = repo.parseConfirmedGridQsos(report(qso))!!
+        assertEquals(setOf("EN52", "EN53", "EN42", "EN43"), result.keys)
+        result.values.forEach { assertEquals(1, it.size) }
+    }
+
+    @Test
+    fun parseQsosRejectsBodyWithoutEoh() {
+        assertNull(repo.parseConfirmedGridQsos("<HTML>Username/password incorrect</HTML>"))
+    }
+
+    @Test
+    fun parseQsosCapturesOwnGridPerQso() {
+        // MY_GRIDSQUARE arrives BEFORE PROP_MODE (ADIF fields are emitted
+        // alphabetically); the per-record buffer must still attach it to the QSO.
+        val qso1 = "<CALL:5>A50QO\n<QSO_DATE:8>20260820\n<MY_GRIDSQUARE:4>OL62\n" +
+            "<PROP_MODE:3>SAT\n<SAT_NAME:5>FO-29\n<MODE:2>CW\n" +
+            "<BAND:3>70CM\n<BAND_RX:3>2M\n<GRIDSQUARE:4>NL47\n<EOR>\n"
+        val qso2 = "<CALL:6>BG7ZFK\n<QSO_DATE:8>20260819\n<MY_GRIDSQUARE:4>OL72\n" +
+            "<PROP_MODE:3>SAT\n<SAT_NAME:5>SO-50\n<MODE:3>FM\n" +
+            "<BAND:3>70CM\n<BAND_RX:3>2M\n<GRIDSQUARE:4>OK48\n<EOR>\n"
+        val result = repo.parseConfirmedGridQsos(report(qso1, qso2))!!
+        assertEquals("OL62", result["NL47"]!!.first().myGrid)
+        assertEquals("OL72", result["OK48"]!!.first().myGrid)
+        // Ground QSO (no PROP_MODE=SAT) must not leak its MY_GRIDSQUARE.
+        val ground = "<CALL:6>BA7OPF\n<QSO_DATE:8>20260821\n<MY_GRIDSQUARE:4>OL62\n<GRIDSQUARE:4>NL47\n<EOR>\n"
+        assertTrue(repo.parseConfirmedGridQsos(report(qso1, ground))!!.values.all { it.all { q -> q.myGrid == "OL62" } })
+    }
+
+    // endregion
+
+    // region parseRoamedGrids (MY_GRIDSQUARE = grids the account operated from)
+
+    @Test
+    fun parseRoamedGridsCollectsOwnStationGrids() {
+        // Satellite QSOs carry MY_GRIDSQUARE = the grid the account itself
+        // operated from (the "roamed/activated" set shown as blue stripes).
+        val qso1 = "<CALL:6>BA7OPF\n<QSO_DATE:8>20260820\n<PROP_MODE:3>SAT\n<SAT_NAME:5>IO-86\n" +
+            "<MY_GRIDSQUARE:4>OL62\n<GRIDSQUARE:4>PM95\n<EOR>\n"
+        val qso2 = "<CALL:6>BA7OPF\n<QSO_DATE:8>20260901\n<PROP_MODE:3>SAT\n<SAT_NAME:5>IO-86\n" +
+            "<MY_GRIDSQUARE:4>OL72\n<GRIDSQUARE:4>NL47\n<EOR>\n"
+        assertEquals(setOf("OL62", "OL72"), repo.parseRoamedGrids(report(qso1, qso2)))
+    }
+
+    @Test
+    fun parseRoamedGridsIgnoresGroundQsos() {
+        val ground = "<CALL:6>BA7OPF\n<QSO_DATE:8>20260821\n<MY_GRIDSQUARE:4>OL72\n<EOR>\n"
+        assertEquals(emptySet<String>(), repo.parseRoamedGrids(report(ground)))
+    }
+
+    @Test
+    fun parseRoamedGridsDoesNotConfuseGridsquareWithMyGridsquare() {
+        // GRIDSQUARE (opposite station's grid) must never leak into the roamed set.
+        val qso = "<PROP_MODE:3>SAT\n<SAT_NAME:5>SO-50\n<MY_GRIDSQUARE:4>OL62\n" +
+            "<GRIDSQUARE:6>OM60IL\n<EOR>\n"
+        assertEquals(setOf("OL62"), repo.parseRoamedGrids(report(qso)))
+    }
+
+    @Test
+    fun parseRoamedGridsTruncatesSixCharToFour() {
+        val qso = "<PROP_MODE:3>SAT\n<SAT_NAME:5>IO-86\n<MY_GRIDSQUARE:6>OL62AA\n<EOR>\n"
+        assertEquals(setOf("OL62"), repo.parseRoamedGrids(report(qso)))
+    }
+
+    @Test
+    fun parseRoamedGridsHandlesAlphabeticalFieldOrder() {
+        // Real lotwreport.adi emits fields alphabetically, so <MY_GRIDSQUARE>
+        // (M) arrives BEFORE <PROP_MODE> (P). The old sequential gate (add only
+        // while propMode == SAT) silently returned an EMPTY set on real reports —
+        // this is the exact bug that made the blue roamed stripes never appear.
+        val qso = "<CALL:6>BA7OPF\n" +
+            "<GRIDSQUARE:4>PM95\n" +
+            "<MY_GRIDSQUARE:6>OL72XX\n" +
+            "<PROP_MODE:3>SAT\n" +
+            "<SAT_NAME:5>IO-86\n" +
+            "<EOR>\n"
+        assertEquals(setOf("OL72"), repo.parseRoamedGrids(report(qso)))
+    }
+
+    @Test
+    fun parseRoamedGridsRejectsBodyWithoutEoh() {
+        assertNull(repo.parseRoamedGrids("<HTML>Username/password incorrect</HTML>"))
+    }
+
+    // endregion
+
+    // region failure classification (fetchReportBody -> LoTWResult mapping)
+
+    @Test
+    fun failureClassificationMapsEachException() {
+        // LoTWRepository.toResult() must keep each failure cause distinct so
+        // the UI can show a specific message per cause.
+        assertEquals(
+            LoTWResult.BadCredentials,
+            repo.toResult(LoTWRepository.CredentialsException())
+        )
+        assertEquals(
+            LoTWResult.RateLimited,
+            repo.toResult(LoTWRepository.RateLimitException())
+        )
+        assertEquals(
+            LoTWResult.Timeout,
+            repo.toResult(LoTWRepository.TimeoutException("read timed out"))
+        )
+        val net = repo.toResult(java.io.IOException("HTTP 500"))
+        assertEquals(LoTWResult.NetworkError("HTTP 500"), net)
+    }
+
+
+    @Test
+    fun parseQsosExtractsAwardFields() {
+        // Award statistics rely on the DXCC/CQZ/STATE fields coming straight
+        // from LoTW's qso_qsldetail report (STATE depends on DXCC). LoTW
+        // writes STATE as "CODE // NAME" (verified with a real report 2026-09);
+        // the parser must strip the name suffix and keep the bare code.
+        val qso = "<CALL:5>BG7XYZ\n" +
+            "<QSO_DATE:8>20260820\n<TIME_ON:4>1130\n" +
+            "<PROP_MODE:3>SAT\n<SAT_NAME:5>FO-29\n<MODE:2>CW\n" +
+            "<DXCC:3>318\n<COUNTRY:5>CHINA\n<CQZ:2>24\n<STATE:13>GD // Guangdong\n" +
+            "<GRIDSQUARE:4>OL62\n<EOR>\n"
+        val result = repo.parseConfirmedGridQsos(report(qso))!!
+        val parsed = result["OL62"]!!.first()
+        assertEquals(318, parsed.dxcc)
+        assertEquals("CHINA", parsed.country)
+        assertEquals(24, parsed.cqz)
+        assertEquals("GD", parsed.state)
+    }
+
+    @Test
+    fun parseQsosStripsStateNameSuffixForAllEntities() {
+        // Japan prefecture: "34 // Tottori-ken" -> "34" (WAJA matching needs
+        // the 2-digit code). US states also arrive as "CODE // Name".
+        val jp = "<CALL:5>JH0ABC\n<QSO_DATE:8>20260820\n<TIME_ON:4>1130\n" +
+            "<PROP_MODE:3>SAT\n<SAT_NAME:5>RS-44\n<DXCC:3>339\n<COUNTRY:7>JAPAN\n" +
+            "<STATE:18>34 // Tottori-ken\n<GRIDSQUARE:4>PM95\n<EOR>\n"
+        val us = "<CALL:5>K1ABC\n<QSO_DATE:8>20260820\n<TIME_ON:4>1130\n" +
+            "<PROP_MODE:3>SAT\n<SAT_NAME:5>AO-07\n<DXCC:3>291\n<COUNTRY:12>UNITED STATES\n" +
+            "<STATE:22>CA // California\n<GRIDSQUARE:4>EM40\n<EOR>\n"
+        val result = repo.parseConfirmedGridQsos(report(jp, us))!!
+        assertEquals("34", result["PM95"]!!.first().state)
+        assertEquals("CA", result["EM40"]!!.first().state)
+    }
+
+    @Test
+    fun parseQsosLeavesAwardFieldsNullWhenAbsent() {
+        val qso = "<CALL:5>JH0ABC\n<QSO_DATE:8>20260820\n<TIME_ON:4>1130\n" +
+            "<PROP_MODE:3>SAT\n<SAT_NAME:5>RS-44\n<GRIDSQUARE:4>PM95\n<EOR>\n"
+        val result = repo.parseConfirmedGridQsos(report(qso))!!
+        val parsed = result["PM95"]!!.first()
+        assertNull(parsed.dxcc)
+        assertNull(parsed.country)
+        assertNull(parsed.cqz)
+        assertNull(parsed.state)
+    }
+
+    @Test
+    fun parseQsosAwardFieldsDoNotLeakAcrossRecords() {
+        val withFields = "<CALL:5>BG7AAA\n<QSO_DATE:8>20260820\n<TIME_ON:4>1130\n" +
+            "<PROP_MODE:3>SAT\n<SAT_NAME:5>FO-29\n<DXCC:3>318\n<CQZ:2>24\n<STATE:2>GD\n" +
+            "<GRIDSQUARE:4>OL62\n<EOR>\n"
+        val withoutFields = "<CALL:5>JH0BBB\n<QSO_DATE:8>20260821\n<TIME_ON:4>1130\n" +
+            "<PROP_MODE:3>SAT\n<SAT_NAME:5>RS-44\n<GRIDSQUARE:4>PM95\n<EOR>\n"
+        val result = repo.parseConfirmedGridQsos(report(withFields, withoutFields))!!
+        assertNull(result["PM95"]!!.first().dxcc)
+        assertNull(result["PM95"]!!.first().cqz)
+        assertNull(result["PM95"]!!.first().state)
+    }
+
+    // endregion
+}

core/data/src/test/java/com/rtbishop/look4sat/core/data/repository/SelectionRepoSearchTest.kt

@@ -0,0 +1,197 @@
+/*
+ * Look4Sat. Amateur radio satellite tracker and pass predictor.
+ * Copyright (C) 2019-2026 Arty Bishop and contributors.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ */
+package com.rtbishop.look4sat.core.data.repository
+
+import com.rtbishop.look4sat.core.domain.model.DataSourcesSettings
+import com.rtbishop.look4sat.core.domain.model.DatabaseState
+import com.rtbishop.look4sat.core.domain.model.OtherSettings
+import com.rtbishop.look4sat.core.domain.model.PassesSettings
+import com.rtbishop.look4sat.core.domain.model.RCSettings
+import com.rtbishop.look4sat.core.domain.model.RadioControlSettings
+import com.rtbishop.look4sat.core.domain.model.SatItem
+import com.rtbishop.look4sat.core.domain.model.SatRadio
+import com.rtbishop.look4sat.core.domain.predict.GeoPos
+import com.rtbishop.look4sat.core.domain.predict.OrbitalData
+import com.rtbishop.look4sat.core.domain.predict.OrbitalObject
+import com.rtbishop.look4sat.core.domain.repository.ISelectionRepo
+import com.rtbishop.look4sat.core.domain.repository.ISettingsRepo
+import com.rtbishop.look4sat.core.domain.source.ILocalSource
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.test.runTest
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertTrue
+import org.junit.Test
+
+@OptIn(ExperimentalCoroutinesApi::class)
+class SelectionRepoSearchTest {
+
+    private val sampleItems = listOf(
+        SatItem(catnum = 25544, name = "ISS (ZARYA)"),
+        SatItem(catnum = 7530, name = "AO-7 (AMSAT-OSCAR 7)"),
+        SatItem(catnum = 39444, name = "AO-73 (FUNcube-1)"),
+        SatItem(catnum = 43803, name = "JO-97 (BIRDS-3)"),
+        SatItem(catnum = 99999, name = "FO-29"),
+    )
+
+    @Test
+    fun `query without separators matches name with dashes spaces brackets`() = runTest {
+        val repo = createRepo(sampleItems)
+        repo.setQuery("ao7")
+        val results = repo.getEntriesFlow().first()
+        // "ao7" is a substring of the normalized "AO-73 (FUNcube-1)" too, so a
+        // fuzzy search legitimately returns both AO-7 (first) and AO-73. The
+        // key guarantee is that AO-7 — which was unreachable before because of
+        // the dashes/brackets — is now found.
+        assertTrue(results.map { it.catnum }.contains(7530))
+        assertEquals(7530, results.first().catnum)
+    }
+
+    @Test
+    fun `query without separators matches name with only dashes`() = runTest {
+        val repo = createRepo(sampleItems)
+        repo.setQuery("fo29")
+        val results = repo.getEntriesFlow().first()
+        assertEquals(listOf(99999), results.map { it.catnum })
+    }
+
+    @Test
+    fun `space-separated tokens all must match in any order`() = runTest {
+        val repo = createRepo(sampleItems)
+        repo.setQuery("zarya iss")
+        val results = repo.getEntriesFlow().first()
+        assertEquals(listOf(25544), results.map { it.catnum })
+    }
+
+    @Test
+    fun `exact name query still matches`() = runTest {
+        val repo = createRepo(sampleItems)
+        repo.setQuery("AO-7 (AMSAT-OSCAR 7)")
+        val results = repo.getEntriesFlow().first()
+        assertEquals(listOf(7530), results.map { it.catnum })
+    }
+
+    @Test
+    fun `partial token query matches substring`() = runTest {
+        val repo = createRepo(sampleItems)
+        repo.setQuery("funcube")
+        val results = repo.getEntriesFlow().first()
+        assertEquals(listOf(39444), results.map { it.catnum })
+    }
+
+    @Test
+    fun `numeric query matches catnum exactly`() = runTest {
+        val repo = createRepo(sampleItems)
+        repo.setQuery("25544")
+        val results = repo.getEntriesFlow().first()
+        assertEquals(listOf(25544), results.map { it.catnum })
+    }
+
+    @Test
+    fun `no query returns all items`() = runTest {
+        val repo = createRepo(sampleItems)
+        repo.setQuery("")
+        val results = repo.getEntriesFlow().first()
+        assertEquals(sampleItems.size, results.size)
+    }
+
+    @Test
+    fun `unmatched query returns nothing`() = runTest {
+        val repo = createRepo(sampleItems)
+        repo.setQuery("zzzznomatch")
+        assertTrue(repo.getEntriesFlow().first().isEmpty())
+    }
+
+    private fun createRepo(items: List<SatItem>): ISelectionRepo {
+        return SelectionRepo(
+            dispatcher = Dispatchers.Unconfined,
+            localSource = FakeLocalSourceForSearch(items),
+            settingsRepo = FakeSettingsRepoForSearch()
+        )
+    }
+}
+
+private class FakeLocalSourceForSearch(private val items: List<SatItem>) : ILocalSource {
+    override suspend fun getEntriesTotal(): Int = items.size
+    override suspend fun getEntriesList(): List<SatItem> = items
+    override suspend fun getEntriesWithIds(ids: List<Int>): List<OrbitalObject> = emptyList()
+    override suspend fun insertEntries(entries: List<OrbitalData>) = Unit
+    override suspend fun deleteEntries() = Unit
+    override suspend fun getIdsWithModes(modes: List<String>): List<Int> = emptyList()
+    override suspend fun getRadiosTotal(): Int = 0
+    override suspend fun getRadiosWithId(id: Int): List<SatRadio> = emptyList()
+    override suspend fun insertRadios(radios: List<SatRadio>, isCustom: Boolean) = Unit
+    override suspend fun deleteManagedRadios() = Unit
+    override suspend fun deleteRadios() = Unit
+}
+
+private class FakeSettingsRepoForSearch : ISettingsRepo {
+    override val appVersionName: String = "test"
+    override val selectedIds: StateFlow<List<Int>> = MutableStateFlow(emptyList())
+    override val selectedTypes: StateFlow<List<String>> = MutableStateFlow(emptyList())
+    override val passesSettings: StateFlow<PassesSettings> = MutableStateFlow(
+        PassesSettings(hoursAhead = 24, minElevation = 0.0, selectedModes = emptyList())
+    )
+    override val stationPosition: StateFlow<GeoPos> = MutableStateFlow(GeoPos(0.0, 0.0))
+    override val databaseState: MutableStateFlow<DatabaseState> = MutableStateFlow(DatabaseState(0, 0, 0L))
+    override val rcSettings: StateFlow<RCSettings> = MutableStateFlow(
+        RCSettings(false, "", "", "", false, "", "", "", 0L, false, "", "", "", false, "", "")
+    )
+    override val otherSettings: StateFlow<OtherSettings> = MutableStateFlow(
+        OtherSettings(
+            false, false, false, false, false, false, false,
+            shouldSeeWarning = false, shouldSeeWhatsNew = false
+        )
+    )
+    override val dataSourcesSettings: MutableStateFlow<DataSourcesSettings> =
+        MutableStateFlow(DataSourcesSettings(satelliteUrls = emptyList(), transceiversUrls = emptyList()))
+    override val dataSourcesStatus: StateFlow<Map<String, Int>> = MutableStateFlow(emptyMap())
+    override val radioControlSettings: StateFlow<RadioControlSettings> = MutableStateFlow(
+        RadioControlSettings(false, RadioControlSettings.MODEL_YAESU_FT817, "", "", "", "", 9600)
+    )
+    override val wavelogSettings: StateFlow<com.rtbishop.look4sat.core.domain.model.WavelogSettings> =
+        MutableStateFlow(com.rtbishop.look4sat.core.domain.model.WavelogSettings())
+    override val lotwSettings: StateFlow<com.rtbishop.look4sat.core.domain.model.LoTWSettings> =
+        MutableStateFlow(com.rtbishop.look4sat.core.domain.model.LoTWSettings())
+
+    override fun setSelectedIds(ids: List<Int>) = Unit
+    override fun setSelectedTypes(types: List<String>) = Unit
+    override fun setPassesSettings(settings: PassesSettings) = Unit
+    override fun setStationPosition(latitude: Double, longitude: Double, altitude: Double): Boolean = true
+    override fun setStationPosition(): Boolean = true
+    override fun setStationPosition(locator: String): Boolean = true
+    override fun getSatelliteTypesIds(types: List<String>): List<Int> = emptyList()
+    override fun setSatelliteTypeIds(type: String, ids: List<Int>) = Unit
+    override fun updateDatabaseState(state: DatabaseState) = Unit
+    override fun updateRCSettings(settings: RCSettings) = Unit
+    override fun updateOtherSettings(transform: (OtherSettings) -> OtherSettings) = Unit
+    override fun updateDataSourcesSettings(settings: DataSourcesSettings) = Unit
+    override fun updateDataSourcesStatus(status: Map<String, Int>) = Unit
+    override fun updateRadioControlSettings(settings: RadioControlSettings) = Unit
+    override fun getSatelliteOffset(catnum: Int): String = ""
+    override fun setSatelliteOffset(catnum: Int, offset: String) = Unit
+    override fun getAmSatCallsign(): String = ""
+    override fun setAmSatCallsign(callsign: String) = Unit
+    override fun updateWavelogSettings(settings: com.rtbishop.look4sat.core.domain.model.WavelogSettings) = Unit
+    override fun getWorkedGrids(): Set<String> = emptySet()
+    override fun setWorkedGrids(grids: Set<String>) = Unit
+    override fun getWorkedGridQsos(): Map<String, List<com.rtbishop.look4sat.core.domain.model.GridQso>> = emptyMap()
+    override fun setWorkedGridQsos(qsos: Map<String, List<com.rtbishop.look4sat.core.domain.model.GridQso>>) = Unit
+    override fun getRoamedGrids(): Set<String> = emptySet()
+    override fun setRoamedGrids(grids: Set<String>) = Unit
+    override fun updateLoTWSettings(settings: com.rtbishop.look4sat.core.domain.model.LoTWSettings) = Unit
+    override fun getLastLotwSyncDate(): String = ""
+    override fun setLastLotwSyncDate(date: String) = Unit
+    override fun getLastLotwSyncCallsign(): String = ""
+    override fun setLastLotwSyncCallsign(callsign: String) = Unit
+}

core/data/src/test/java/com/rtbishop/look4sat/core/data/repository/SelectionRepoTest.kt

@@ -1,177 +0,0 @@
-/*
- * Look4Sat. Amateur radio satellite tracker and pass predictor.
- * Copyright (C) 2019-2026 Arty Bishop and contributors.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-package com.rtbishop.look4sat.core.data.repository
-
-import com.rtbishop.look4sat.core.domain.model.DataSourcesSettings
-import com.rtbishop.look4sat.core.domain.model.DatabaseState
-import com.rtbishop.look4sat.core.domain.model.OtherSettings
-import com.rtbishop.look4sat.core.domain.model.PassesSettings
-import com.rtbishop.look4sat.core.domain.model.RCSettings
-import com.rtbishop.look4sat.core.domain.model.RadioControlSettings
-import com.rtbishop.look4sat.core.domain.model.SatItem
-import com.rtbishop.look4sat.core.domain.model.SatRadio
-import com.rtbishop.look4sat.core.domain.predict.GeoPos
-import com.rtbishop.look4sat.core.domain.predict.OrbitalObject
-import com.rtbishop.look4sat.core.domain.repository.ISettingsRepo
-import com.rtbishop.look4sat.core.domain.source.ILocalSource
-import kotlinx.coroutines.ExperimentalCoroutinesApi
-import kotlinx.coroutines.flow.MutableStateFlow
-import kotlinx.coroutines.flow.StateFlow
-import kotlinx.coroutines.flow.first
-import kotlinx.coroutines.test.StandardTestDispatcher
-import kotlinx.coroutines.test.runTest
-import org.junit.Assert.assertEquals
-import org.junit.Test
-
-@OptIn(ExperimentalCoroutinesApi::class)
-class SelectionRepoTest {
-
-    private val dispatcher = StandardTestDispatcher()
-
-    @Test
-    fun `unknown mode values do not crash and do not filter out entries`() = runTest(dispatcher) {
-        val localSource = FakeLocalSource(
-            entries = listOf(
-                SatItem(25544, "ISS (ZARYA)", false),
-                SatItem(40967, "TIANGONG", false)
-            )
-        )
-        val settingsRepo = FakeSettingsRepo(selectedModes = listOf("REMOVED_MODE"))
-        val repository = SelectionRepo(dispatcher, localSource, settingsRepo)
-
-        val flow = repository.getEntriesFlow()
-        repository.setModes(listOf("REMOVED_MODE"))
-
-        val items = flow.first()
-
-        assertEquals(listOf(25544, 40967), items.map { it.catnum })
-        assertEquals(listOf("REMOVED_MODE"), repository.getCurrentModes())
-    }
-
-    @Test
-    fun `selected satellites are shown first`() = runTest(dispatcher) {
-        val localSource = FakeLocalSource(
-            entries = listOf(
-                SatItem(44444, "Zeta", false),
-                SatItem(25544, "Alpha", false),
-                SatItem(40967, "Beta", false)
-            )
-        )
-        val settingsRepo = FakeSettingsRepo(selectedModes = emptyList())
-        val repository = SelectionRepo(dispatcher, localSource, settingsRepo)
-
-        val flow = repository.getEntriesFlow()
-        repository.setSelection(listOf(40967), true)
-
-        val items = flow.first()
-
-        assertEquals(listOf(40967, 25544, 44444), items.map { it.catnum })
-        assertEquals(listOf(true, false, false), items.map { it.isSelected })
-    }
-
-    private class FakeLocalSource(
-        private val entries: List<SatItem>
-    ) : ILocalSource {
-        override suspend fun getEntriesTotal(): Int = entries.size
-
-        override suspend fun getEntriesList(): List<SatItem> = entries
-
-        override suspend fun getEntriesWithIds(ids: List<Int>): List<OrbitalObject> = emptyList()
-
-        override suspend fun insertEntries(entries: List<com.rtbishop.look4sat.core.domain.predict.OrbitalData>) = Unit
-
-        override suspend fun deleteEntries() = Unit
-
-        override suspend fun getIdsWithModes(modes: List<String>): List<Int> = emptyList()
-
-        override suspend fun getRadiosTotal(): Int = 0
-
-        override suspend fun getRadiosWithId(id: Int): List<SatRadio> = emptyList()
-
-        override suspend fun insertRadios(radios: List<SatRadio>) = Unit
-
-        override suspend fun deleteRadios() = Unit
-    }
-
-    private class FakeSettingsRepo(
-        selectedModes: List<String>
-    ) : ISettingsRepo {
-
-        override val appVersionName: String = "test"
-
-        override val selectedIds: StateFlow<List<Int>> = MutableStateFlow(emptyList())
-
-        override val selectedSatModes: MutableStateFlow<List<String>> = MutableStateFlow(selectedModes)
-
-        override val passesSettings: StateFlow<PassesSettings> = MutableStateFlow(
-            PassesSettings(hoursAhead = 24, minElevation = 0.0)
-        )
-
-        override val stationPosition: StateFlow<GeoPos> = MutableStateFlow(GeoPos(0.0, 0.0))
-
-        override val databaseState: MutableStateFlow<DatabaseState> = MutableStateFlow(DatabaseState(0, 0, 0L))
-
-        override val rcSettings: StateFlow<RCSettings> = MutableStateFlow(
-            RCSettings(false, "", "", "", false, "", "", "", 0L, false, "", "", "", false, "", "")
-        )
-
-        override val otherSettings: StateFlow<OtherSettings> = MutableStateFlow(
-            OtherSettings(false, false, false, false, false, false, false, false)
-        )
-
-        override val dataSourcesSettings: StateFlow<DataSourcesSettings> = MutableStateFlow(
-            DataSourcesSettings(emptyList(), emptyList())
-        )
-
-        override val radioControlSettings: StateFlow<RadioControlSettings> = MutableStateFlow(
-            RadioControlSettings(false, RadioControlSettings.MODEL_YAESU_FT817, "", "", "", "", 9600)
-        )
-
-        override fun setSelectedIds(ids: List<Int>) = Unit
-
-        override fun setSelectedSatModes(modes: List<String>) {
-            selectedSatModes.value = modes
-        }
-
-        override fun setPassesSettings(settings: PassesSettings) = Unit
-
-        override fun setStationPosition(latitude: Double, longitude: Double, altitude: Double): Boolean = true
-
-        override fun setStationPosition(): Boolean = true
-
-        override fun setStationPosition(locator: String): Boolean = true
-
-        override fun updateDatabaseState(state: DatabaseState) {
-            databaseState.value = state
-        }
-
-        override fun updateRCSettings(settings: RCSettings) = Unit
-
-        override fun updateOtherSettings(transform: (OtherSettings) -> OtherSettings) = Unit
-
-        override fun updateDataSourcesSettings(settings: DataSourcesSettings) = Unit
-
-        override fun updateRadioControlSettings(settings: RadioControlSettings) = Unit
-
-        override fun getSatelliteOffset(catnum: Int): String = ""
-
-        override fun setSatelliteOffset(catnum: Int, offset: String) = Unit
-    }
-}
-
-

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/cw/CwBayesianDecoder.kt

@@ -0,0 +1,154 @@
+/*
+ * Look4Sat. Amateur radio satellite tracker and pass predictor.
+ * Copyright (C) 2019-2026 Arty Bishop and contributors.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package com.rtbishop.look4sat.core.domain.cw
+
+/**
+ * Bayesian Morse timing decoder.
+ * Replaces hard thresholds with probability-based decision making.
+ *
+ * Inspired by VE3NEA's CW Skimmer approach:
+ * "Instead of making a hard decision at every input sample whether the signal
+ * is present or not, compute the probability that the signal is present."
+ *
+ * Uses Gaussian probability density centered on expected durations:
+ *   P(dit | duration) = exp(-(duration - dotMs)^2 / (2 * variance^2))
+ *   P(dash | duration) = exp(-(duration - 3*dotMs)^2 / (2 * variance^2))
+ */
+internal class CwBayesianDecoder {
+
+    // Morse timing parameters
+    private var dotDurationMs = 60f // initial 20 WPM
+    private var speedWpm = 20f
+
+    // Current symbol being accumulated
+    private var currentSymbol = StringBuilder()
+    private var textBuffer = StringBuilder()
+
+    // Recent dit lengths for speed estimation
+    private val recentDits = mutableListOf<Float>()
+
+    // Output
+    private var _decodedText = ""
+    val decodedText: String get() = _decodedText
+
+    /** Gaussian probability. */
+    private fun gaussianProb(durationMs: Float, expectedMs: Float, varianceMs: Float): Float {
+        if (varianceMs <= 0f) return 0f
+        val diff = durationMs - expectedMs
+        return kotlin.math.exp(-(diff * diff) / (2 * varianceMs * varianceMs))
+    }
+
+    /** Process a tone duration. Returns the symbol type with highest probability. */
+    fun processTone(durationMs: Float): ToneResult {
+        val ditProb = gaussianProb(durationMs, dotDurationMs, dotDurationMs * 0.4f)
+        val dashProb = gaussianProb(durationMs, dotDurationMs * 3f, dotDurationMs * 0.6f)
+
+        return if (ditProb > dashProb && ditProb > 0.05f) {
+            currentSymbol.append('0')
+            recentDits.add(durationMs)
+            updateSpeed()
+            ToneResult('0', ditProb)
+        } else if (dashProb > 0.05f) {
+            currentSymbol.append('1')
+            ToneResult('1', dashProb)
+        } else {
+            ToneResult(null, 0f)
+        }
+    }
+
+    /** Process a gap duration. Returns decoded character or null. */
+    fun processGap(durationMs: Float): Char? {
+        if (currentSymbol.isEmpty()) {
+            val wordProb = gaussianProb(durationMs, dotDurationMs * 7f, dotDurationMs * 1.2f)
+            if (wordProb > 0.2f) {
+                textBuffer.append(' ')
+                _decodedText = textBuffer.toString()
+                return ' '
+            }
+            return null
+        }
+
+        val interCharProb = gaussianProb(durationMs, dotDurationMs * 3f, dotDurationMs * 0.6f)
+        val wordProb = gaussianProb(durationMs, dotDurationMs * 7f, dotDurationMs * 1.2f)
+
+        if (wordProb > interCharProb && wordProb > 0.2f) {
+            val char = flushSymbol()
+            textBuffer.append(' ')
+            _decodedText = textBuffer.toString()
+            return char
+        }
+        if (interCharProb > 0.15f) {
+            val char = flushSymbol()
+            _decodedText = textBuffer.toString()
+            return char
+        }
+        return null
+    }
+
+    private fun flushSymbol(): Char? {
+        if (currentSymbol.isEmpty()) return null
+        val morse = currentSymbol.toString()
+        currentSymbol.clear()
+        val char = morseToChar(morse)
+        if (char != null) textBuffer.append(char)
+        return char
+    }
+
+    private fun updateSpeed() {
+        if (recentDits.size < 3) return
+        val sorted = recentDits.sorted()
+        val median = sorted[sorted.size / 2]
+        if (median > 0f) {
+            dotDurationMs = dotDurationMs * 0.7f + median * 0.3f
+            val wpm = 60.0f / (50.0f * dotDurationMs / 1000.0f)
+            if (wpm in 5f..55f) speedWpm = wpm
+        }
+    }
+
+    fun getSpeed(): Float = speedWpm
+
+    fun reset() {
+        dotDurationMs = 60f
+        speedWpm = 20f
+        recentDits.clear()
+        currentSymbol.clear()
+        textBuffer.clear()
+        _decodedText = ""
+    }
+
+    companion object {
+        private val MORSE_TABLE = mapOf(
+            "01" to 'A', "1000" to 'B', "1010" to 'C', "100" to 'D', "0" to 'E',
+            "0010" to 'F', "110" to 'G', "0000" to 'H', "00" to 'I', "0111" to 'J',
+            "101" to 'K', "0100" to 'L', "11" to 'M', "10" to 'N', "111" to 'O',
+            "0110" to 'P', "1101" to 'Q', "010" to 'R', "000" to 'S', "1" to 'T',
+            "001" to 'U', "0001" to 'V', "011" to 'W', "1001" to 'X', "1011" to 'Y',
+            "1100" to 'Z', "01111" to '1', "00111" to '2', "00011" to '3',
+            "00001" to '4', "00000" to '5', "10000" to '6', "11000" to '7',
+            "11100" to '8', "11110" to '9', "11111" to '0',
+            "010101" to '.', "110011" to ',', "001100" to '?', "011110" to '\'',
+            "101011" to '!', "10010" to '/', "10110" to '(', "101101" to ')',
+            "01000" to '&', "111000" to ':', "101010" to ';', "10001" to '=',
+            "01010" to '+', "100001" to '-', "001101" to '_', "010010" to '"',
+            "0001001" to '$', "011010" to '@'
+        )
+        fun morseToChar(morse: String): Char? = MORSE_TABLE[morse]
+    }
+}
+
+data class ToneResult(val symbol: Char?, val probability: Float)

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/cw/CwChannelTracker.kt

@@ -0,0 +1,114 @@
+/*
+ * Look4Sat. Amateur radio satellite tracker and pass predictor.
+ * Copyright (C) 2019-2026 Arty Bishop and contributors.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package com.rtbishop.look4sat.core.domain.cw
+
+/**
+ * Multi-channel CW signal tracker.
+ * Monitors the spectrogram for active frequency bins and extracts
+ * energy envelopes for each detected signal.
+ *
+ * Inspired by CW Skimmer's multi-channel approach:
+ * tracks all active signals in the passband simultaneously,
+ * selects the best one for decoded output.
+ */
+internal class CwChannelTracker(
+    private val spectrogram: CwSpectrogram,
+    private val maxChannels: Int = 3
+) {
+    data class Channel(
+        val bin: Int,
+        val frequency: Float,
+        var active: Boolean = false,
+        var energy: Float = 0f,
+        val history: MutableList<Float> = mutableListOf(),
+        var confidence: Float = 0f
+    )
+
+    private val channels = Array(maxChannels) { Channel(0, 0f) }
+
+    /** Scan the current spectrogram column and update channel tracking. */
+    fun update(): List<Channel> {
+        val col = spectrogram.getCurrentColumn()
+        val peaks = findPeaks(col, threshold = 0.3f, minDistance = 2)
+
+        // Update existing channels
+        for (ch in channels) {
+            if (ch.active) {
+                if (peaks.contains(ch.bin)) {
+                    ch.energy = col[ch.bin]
+                    ch.history.add(ch.energy)
+                    if (ch.history.size > 40) ch.history.removeAt(0)
+                    ch.confidence = computeConfidence(ch.history)
+                } else {
+                    // Signal lost — decay confidence
+                    ch.history.add(0f)
+                    if (ch.history.size > 40) ch.history.removeAt(0)
+                    ch.confidence *= 0.9f
+                    if (ch.confidence < 0.1f) ch.active = false
+                }
+            }
+        }
+
+        // Assign new peaks to inactive channels
+        var peakIdx = 0
+        for (ch in channels) {
+            if (!ch.active && peakIdx < peaks.size) {
+                val bin = peaks[peakIdx]
+                val freq = spectrogram.binToFreq(bin)
+                // Re-initialize channel
+                channels[peakIdx] = Channel(bin, freq, true, col[bin], mutableListOf(), 0.5f)
+                peakIdx++
+            }
+        }
+
+        return channels.filter { it.active }
+    }
+
+    /** Find peak bins in the spectrum. */
+    private fun findPeaks(spectrum: FloatArray, threshold: Float, minDistance: Int): List<Int> {
+        val peaks = mutableListOf<Int>()
+        for (i in 1 until spectrum.size - 1) {
+            if (spectrum[i] > spectrum[i - 1] && spectrum[i] > spectrum[i + 1] && spectrum[i] > threshold) {
+                if (peaks.isEmpty() || i - peaks.last() >= minDistance) {
+                    peaks.add(i)
+                }
+            }
+        }
+        return peaks.sortedByDescending { spectrum[it] }
+    }
+
+    /** Compute confidence from energy history. Lower variance = higher confidence. */
+    private fun computeConfidence(history: List<Float>): Float {
+        if (history.size < 10) return 0.3f
+        val recent = history.takeLast(10)
+        val mean = recent.average().toFloat()
+        val variance = recent.map { (it - mean) * (it - mean) }.average().toFloat()
+        return if (mean > 0f) (mean / (mean + variance + 0.1f)).coerceIn(0f, 1f) else 0f
+    }
+
+    /** Get the channel with highest confidence. */
+    fun getBestChannel(): Channel? {
+        return channels.filter { it.active }.maxByOrNull { it.confidence }
+    }
+
+    fun reset() {
+        for (i in channels.indices) {
+            channels[i] = Channel(0, 0f)
+        }
+    }
+}

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/cw/CwDecoder.kt

@@ -0,0 +1,165 @@
+/*
+ * Look4Sat. Amateur radio satellite tracker and pass predictor.
+ * Copyright (C) 2019-2026 Arty Bishop and contributors.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package com.rtbishop.look4sat.core.domain.cw
+
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+
+/**
+ * CW (Morse code) decoder v3 — Spectrogram-based multi-channel Bayesian decoder.
+ *
+ * Architecture inspired by Morse Expert / CW Skimmer (VE3NEA):
+ *   1. FFT spectrogram creates a frequency×time matrix
+ *   2. Multi-channel peak detector finds all active signals
+ *   3. Per-channel energy envelope extraction
+ *   4. Bayesian probability for symbol timing (Gaussian likelihood)
+ *   5. Best channel selected for output
+ *
+ * Timing analysis is performed per spectrogram column (hop).
+ * Each column represents hopSize/sampleRate seconds of audio.
+ */
+class CwDecoder(
+    val sampleRate: Int = 8000,
+    cwToneFreq: Float = -1f // ignored in v3 (auto-detect via spectrogram)
+) {
+    companion object {
+        private const val FFT_SIZE = 256
+        private const val HOP_SIZE = 64
+    }
+
+    private val spectrogram = CwSpectrogram(
+        fftSize = FFT_SIZE,
+        hopSize = HOP_SIZE,
+        sampleRate = sampleRate,
+        minBin = 6,
+        maxBin = 38,
+        historyCols = 40
+    )
+    private val channelTracker = CwChannelTracker(spectrogram, maxChannels = 3)
+    private val bayesianDecoder = CwBayesianDecoder()
+
+    // Timing state per channel
+    private data class ChannelTiming(
+        var isSignal: Boolean = false,
+        var toneTicks: Int = 0,
+        var gapTicks: Int = 0
+    )
+    private val timingStates = Array(3) { ChannelTiming() }
+
+    // Time per spectrogram column in milliseconds
+    private val tickMs = 1000f * HOP_SIZE / sampleRate
+
+    // Output flows
+    private val _decodedTextFlow = MutableStateFlow("")
+    val decodedTextFlow: StateFlow<String> = _decodedTextFlow
+
+    private val _signalStrength = MutableStateFlow(0f)
+    val signalStrength: StateFlow<Float> = _signalStrength
+
+    private val _estimatedPitch = MutableStateFlow<Float?>(null)
+    val estimatedPitch: StateFlow<Float?> = _estimatedPitch
+
+    private val _estimatedSpeed = MutableStateFlow<Float?>(null)
+    val estimatedSpeed: StateFlow<Float?> = _estimatedSpeed
+
+    private var frameCount = 0
+
+    init {
+        if (cwToneFreq > 0f) {
+            _estimatedPitch.value = cwToneFreq
+        }
+    }
+
+    fun processBuffer(buffer: FloatArray) {
+        // 1. Feed samples to spectrogram
+        spectrogram.addSamples(buffer)
+
+        // 2. Get number of new columns generated
+        val newCols = spectrogram.getNewColumns()
+        if (newCols == 0) return
+
+        // 3. Update channel tracker (uses latest column for peak detection)
+        val activeChannels = channelTracker.update()
+
+        // 4. Process each new column for timing analysis
+        //    Columns are indexed 0..historyCols-1, where historyCols-1 is the newest
+        val baseIdx = (spectrogram.historyCols - newCols).coerceAtLeast(0)
+        for (colOffset in 0 until newCols) {
+            val col = spectrogram.getColumn(baseIdx + colOffset)
+
+            for ((idx, channel) in activeChannels.withIndex()) {
+                if (idx >= timingStates.size) break
+                val state = timingStates[idx]
+                val energy = if (channel.bin in col.indices) col[channel.bin] else 0f
+
+                // Adaptive threshold
+                val threshold = 0.3f + (energy - 0.3f) * 0.3f
+
+                if (energy > threshold) {
+                    if (!state.isSignal) {
+                        if (state.gapTicks > 0) {
+                            val gapMs = state.gapTicks * tickMs
+                            bayesianDecoder.processGap(gapMs)
+                        }
+                        state.gapTicks = 0
+                        state.isSignal = true
+                    }
+                    state.toneTicks++
+                } else {
+                    if (state.isSignal) {
+                        if (state.toneTicks > 0) {
+                            val toneMs = state.toneTicks * tickMs
+                            bayesianDecoder.processTone(toneMs)
+                        }
+                        state.toneTicks = 0
+                        state.isSignal = false
+                    }
+                    state.gapTicks++
+                }
+            }
+        }
+
+        // 5. Update outputs
+        frameCount++
+        if (frameCount % 5 == 0) {
+            val bestChannel = channelTracker.getBestChannel()
+            if (bestChannel != null) {
+                _estimatedPitch.value = bestChannel.frequency
+                _signalStrength.value = bestChannel.confidence
+                _estimatedSpeed.value = bayesianDecoder.getSpeed()
+            }
+            _decodedTextFlow.value = bayesianDecoder.decodedText
+        }
+    }
+
+    fun resetDecoder() {
+        spectrogram.reset()
+        channelTracker.reset()
+        bayesianDecoder.reset()
+        for (state in timingStates) {
+            state.isSignal = false
+            state.toneTicks = 0
+            state.gapTicks = 0
+        }
+        frameCount = 0
+        _decodedTextFlow.value = ""
+        _signalStrength.value = 0f
+        _estimatedPitch.value = null
+        _estimatedSpeed.value = null
+    }
+}

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/cw/CwDsp.kt

@@ -0,0 +1,102 @@
+/*
+ * Look4Sat. Amateur radio satellite tracker and pass predictor.
+ * Copyright (C) 2019-2026 Arty Bishop and contributors.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package com.rtbishop.look4sat.core.domain.cw
+
+import kotlin.math.PI
+import kotlin.math.cos
+import kotlin.math.sin
+import kotlin.math.sqrt
+
+/**
+ * DSP utilities for CW (Morse code) decoding.
+ * Pure Kotlin, no NDK required.
+ */
+internal object CwDsp {
+
+    /**
+     * Design a simple bandpass FIR filter coefficients using windowed sinc method.
+     * @param lowCutoff  lower cutoff frequency (Hz) as fraction of sampleRate
+     * @param highCutoff upper cutoff frequency (Hz) as fraction of sampleRate
+     * @param taps       filter length (must be odd)
+     */
+    fun bandpassFir(lowCutoff: Double, highCutoff: Double, taps: Int): FloatArray {
+        val n = if (taps % 2 == 0) taps + 1 else taps
+        val half = n / 2
+        val coeffs = FloatArray(n)
+        for (i in 0 until n) {
+            val idx = i - half
+            if (idx == 0) {
+                coeffs[i] = (2.0 * (highCutoff - lowCutoff)).toFloat()
+            } else {
+                val x = PI * idx
+                coeffs[i] = ((sin(2 * highCutoff * x) - sin(2 * lowCutoff * x)) / x).toFloat()
+            }
+            // Hamming window
+            coeffs[i] = (coeffs[i] * (0.54 - 0.46 * cos(2 * PI * i / (n - 1)))).toFloat()
+        }
+        // Normalize
+        val sum = coeffs.sum()
+        if (sum != 0f) for (i in 0 until n) coeffs[i] /= sum
+        return coeffs
+    }
+
+    /** Apply FIR filter to a buffer. */
+    fun applyFir(buffer: FloatArray, coeffs: FloatArray): FloatArray {
+        val out = FloatArray(buffer.size)
+        for (i in buffer.indices) {
+            var sum = 0f
+            for (j in coeffs.indices) {
+                val idx = i - j
+                if (idx >= 0) sum += buffer[idx] * coeffs[j]
+            }
+            out[i] = sum
+        }
+        return out
+    }
+
+    /** Simple envelope detector: abs + low-pass smoothing. */
+    fun envelope(signal: FloatArray, alpha: Float = 0.1f): FloatArray {
+        val env = FloatArray(signal.size)
+        var s = 0f
+        for (i in signal.indices) {
+            s = alpha * kotlin.math.abs(signal[i]) + (1 - alpha) * s
+            env[i] = s
+        }
+        return env
+    }
+
+    /** Estimate noise floor from envelope for adaptive thresholding. */
+    fun noiseFloor(env: FloatArray, fraction: Float = 0.3f): Float {
+        val sorted = env.sortedArray()
+        val median = sorted[sorted.size / 2]
+        return median + (sorted[sorted.size * 9 / 10] - median) * fraction
+    }
+
+    /** Simple Goertzel to detect a specific tone frequency. */
+    fun goertzel(buffer: FloatArray, targetFreq: Float, sampleRate: Int): Float {
+        val omega = 2.0 * PI * targetFreq / sampleRate
+        val coeff = 2.0 * cos(omega)
+        var s0 = 0.0; var s1 = 0.0; var s2 = 0.0
+        for (sample in buffer) {
+            s0 = sample.toDouble() + coeff * s1 - s2
+            s2 = s1; s1 = s0
+        }
+        val power = s2 * s2 + s1 * s1 - coeff * s1 * s2
+        return sqrt(kotlin.math.abs(power)).toFloat()
+    }
+}

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/cw/CwFFT.kt

@@ -0,0 +1,87 @@
+/*
+ * Look4Sat. Amateur radio satellite tracker and pass predictor.
+ * Copyright (C) 2019-2026 Arty Bishop and contributors.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package com.rtbishop.look4sat.core.domain.cw
+
+import kotlin.math.cos
+import kotlin.math.sqrt
+
+/**
+ * Radix-2 FFT for real-valued input.
+ * Produces magnitude spectrum for the first N/2+1 bins.
+ * Used by CwSpectrogram for time-frequency analysis.
+ */
+internal class CwFFT(private val n: Int) {
+    init {
+        require(n > 0 && n and (n - 1) == 0) { "FFT size must be power of 2, got $n" }
+    }
+
+    private val cosTable = FloatArray(n / 2)
+    private val sinTable = FloatArray(n / 2)
+
+    init {
+        for (i in 0 until n / 2) {
+            val angle = -2.0 * kotlin.math.PI * i / n
+            cosTable[i] = cos(angle).toFloat()
+            sinTable[i] = kotlin.math.sin(angle).toFloat()
+        }
+    }
+
+    /** Compute magnitude spectrum for real input. Returns array of size n/2+1. */
+    fun magnitudeSpectrum(input: FloatArray): FloatArray {
+        require(input.size == n) { "Input size must be $n, got ${input.size}" }
+
+        val real = input.copyOf()
+        val imag = FloatArray(n)
+
+        // Bit-reversal permutation
+        var j = 0
+        for (i in 1 until n) {
+            var bit = n shr 1
+            while (j and bit != 0) { j = j xor bit; bit = bit shr 1 }
+            j = j xor bit
+            if (i < j) {
+                var tmp = real[i]; real[i] = real[j]; real[j] = tmp
+            }
+        }
+
+        // Radix-2 Cooley-Tukey FFT
+        var len = 2
+        while (len <= n) {
+            val half = len / 2
+            val step = n / len
+            for (i in 0 until n step len) {
+                for (k in 0 until half) {
+                    val tReal = real[i + k + half] * cosTable[k * step] - imag[i + k + half] * sinTable[k * step]
+                    val tImag = real[i + k + half] * sinTable[k * step] + imag[i + k + half] * cosTable[k * step]
+                    real[i + k + half] = real[i + k] - tReal
+                    imag[i + k + half] = imag[i + k] - tImag
+                    real[i + k] += tReal
+                    imag[i + k] += tImag
+                }
+            }
+            len = len shl 1
+        }
+
+        // Magnitude spectrum (first N/2+1 bins)
+        val mag = FloatArray(n / 2 + 1)
+        for (i in 0..n / 2) {
+            mag[i] = sqrt(real[i] * real[i] + imag[i] * imag[i]) / n
+        }
+        return mag
+    }
+}

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/cw/CwFilter.kt

@@ -0,0 +1,48 @@
+/*
+ * Look4Sat. Amateur radio satellite tracker and pass predictor.
+ * Copyright (C) 2019-2026 Arty Bishop and contributors.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package com.rtbishop.look4sat.core.domain.cw
+
+/**
+ * First-order IIR filters.
+ * Ported from ggmorse/src/filter.h
+ */
+internal class CwFilter {
+    private var z1 = 0f
+
+    companion object {
+        private const val PI_F = 3.141592653589793f
+    }
+
+    fun highPass(sample: Float, cutoffHz: Float, sampleRate: Float): Float {
+        val rc = 1.0f / (2f * PI_F * cutoffHz)
+        val dt = 1.0f / sampleRate
+        val alpha = dt / (rc + dt)
+        z1 = alpha * (z1 + sample - z1)
+        return sample - z1
+    }
+
+    fun lowPass(sample: Float, cutoffHz: Float, sampleRate: Float): Float {
+        val rc = 1.0f / (2f * PI_F * cutoffHz)
+        val dt = 1.0f / sampleRate
+        val alpha = dt / (rc + dt)
+        z1 += alpha * (sample - z1)
+        return z1
+    }
+
+    fun reset() { z1 = 0f }
+}

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/cw/CwGoertzel.kt

@@ -0,0 +1,54 @@
+/*
+ * Look4Sat. Amateur radio satellite tracker and pass predictor.
+ * Copyright (C) 2019-2026 Arty Bishop and contributors.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package com.rtbishop.look4sat.core.domain.cw
+
+import kotlin.math.cos
+import kotlin.math.sqrt
+
+/**
+ * Running Goertzel filter for CW tone detection.
+ * Tracks a specific frequency over time with a sliding window.
+ * Ported from ggmorse/src/goertzel.h
+ */
+internal class CwGoertzel {
+    private var s1 = 0.0
+    private var s2 = 0.0
+    private var coeff = 0.0
+
+    fun init(sampleRate: Float, targetFreq: Float) {
+        val omega = 2.0 * kotlin.math.PI * targetFreq / sampleRate
+        coeff = 2.0 * cos(omega)
+        s1 = 0.0
+        s2 = 0.0
+    }
+
+    fun process(sample: Float) {
+        val s0 = sample.toDouble() + coeff * s1 - s2
+        s2 = s1
+        s1 = s0
+    }
+
+    fun getPower(): Float {
+        return sqrt(s2 * s2 + s1 * s1 - coeff * s1 * s2).toFloat()
+    }
+
+    fun reset() {
+        s1 = 0.0
+        s2 = 0.0
+    }
+}

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/cw/CwResampler.kt

@@ -0,0 +1,53 @@
+/*
+ * Look4Sat. Amateur radio satellite tracker and pass predictor.
+ * Copyright (C) 2019-2026 Arty Bishop and contributors.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package com.rtbishop.look4sat.core.domain.cw
+
+/**
+ * Simple linear resampler.
+ * Downsamples from input sample rate to output sample rate.
+ * Ported from ggmorse/src/resampler.h
+ */
+internal class CwResampler(private val inputRate: Float, private val outputRate: Float) {
+    private val ratio = inputRate / outputRate
+    private var lastSample = 0f
+
+    fun process(input: FloatArray): FloatArray {
+        if (ratio <= 0f || input.isEmpty()) return input
+        val outputLen = (input.size / ratio).toInt() + 1
+        val output = FloatArray(outputLen)
+        var idx = 0f
+        for (i in output.indices) {
+            val intIdx = idx.toInt()
+            val frac = idx - intIdx
+            if (intIdx + 1 < input.size) {
+                output[i] = input[intIdx] * (1 - frac) + input[intIdx + 1] * frac
+            } else if (intIdx < input.size) {
+                output[i] = input[intIdx] * (1 - frac) + lastSample * frac
+            } else {
+                output[i] = lastSample
+            }
+            idx += ratio
+        }
+        lastSample = input.lastOrNull() ?: lastSample
+        return output
+    }
+
+    fun reset() {
+        lastSample = 0f
+    }
+}

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/cw/CwSTFFT.kt

@@ -0,0 +1,61 @@
+/*
+ * Look4Sat. Amateur radio satellite tracker and pass predictor.
+ * Copyright (C) 2019-2026 Arty Bishop and contributors.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package com.rtbishop.look4sat.core.domain.cw
+
+import kotlin.math.cos
+import kotlin.math.sin
+import kotlin.math.sqrt
+
+/**
+ * Lightweight pitch detector using DFT at specific frequency bins.
+ * Only scans [200, 1200] Hz in configurable steps — much faster than full FFT.
+ * Ported from ggmorse/src/stfft.h (simplified for CW use case).
+ */
+internal class CwPitchDetector(
+    private val sampleRate: Float,
+    private val minFreq: Float = 200f,
+    private val maxFreq: Float = 1200f,
+    private val stepHz: Float = 10f
+) {
+    /**
+     * Find the dominant pitch frequency in the buffer.
+     * Returns null if no significant pitch found.
+     */
+    fun findPitch(buffer: FloatArray): Float? {
+        if (buffer.isEmpty()) return null
+        var bestFreq = 0f
+        var bestPower = 0f
+        var freq = minFreq
+        while (freq <= maxFreq) {
+            var real = 0.0
+            var imag = 0.0
+            val omega = 2.0 * kotlin.math.PI * freq / sampleRate
+            for (i in buffer.indices) {
+                real += buffer[i] * cos(omega * i)
+                imag += buffer[i] * -sin(omega * i)
+            }
+            val power = (real * real + imag * imag).toFloat()
+            if (power > bestPower) {
+                bestPower = power
+                bestFreq = freq
+            }
+            freq += stepHz
+        }
+        return if (bestPower > 0.001f) bestFreq else null
+    }
+}

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/cw/CwSpectrogram.kt

@@ -0,0 +1,170 @@
+/*
+ * Look4Sat. Amateur radio satellite tracker and pass predictor.
+ * Copyright (C) 2019-2026 Arty Bishop and contributors.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package com.rtbishop.look4sat.core.domain.cw
+
+/**
+ * Sliding-window spectrogram for CW decoding.
+ * Maintains a time-frequency matrix updated with each audio frame.
+ *
+ * FFT size: 256, hop size: 64, sample rate: 4000 (or native)
+ * Frequency bins: 6..38 (187-1187 Hz, covers typical CW range)
+ * History: 40 columns (320 ms window)
+ * Time resolution: 64/4000 = 16 ms, Frequency resolution: 4000/256 = 15.625 Hz
+ */
+internal class CwSpectrogram(
+    private val fftSize: Int = 256,
+    private val hopSize: Int = 64,
+    private val sampleRate: Int = 4000,
+    private val minBin: Int = 6,
+    private val maxBin: Int = 38,
+    val historyCols: Int = 40
+) {
+    private val fft = CwFFT(fftSize)
+    val numBins: Int get() = maxBin - minBin + 1
+
+    // Hanning window
+    private val hanning = FloatArray(fftSize) {
+        (0.5 - 0.5 * kotlin.math.cos(2.0 * kotlin.math.PI * it / (fftSize - 1))).toFloat()
+    }
+
+    // Spectrogram data: [timeCol][freqBin]
+    private val spectrogram = Array(historyCols) { FloatArray(numBins) }
+    private var currentCol = 0
+    private var samplesBuffered = 0
+    private val buffer = FloatArray(fftSize)
+
+    // Per-bin running energy for normalization
+    private val binEnergy = FloatArray(numBins) { 1f }
+    private val alpha = 0.95f
+
+    // Counter for new columns generated since last check
+    private var newColumnCount = 0
+
+    /** Add audio samples, compute FFTs for each complete hop. */
+    fun addSamples(samples: FloatArray) {
+        var offset = 0
+        while (offset < samples.size) {
+            val needed = fftSize - samplesBuffered
+            val copyLen = minOf(needed, samples.size - offset)
+            System.arraycopy(samples, offset, buffer, samplesBuffered, copyLen)
+            samplesBuffered += copyLen
+            offset += copyLen
+
+            if (samplesBuffered >= fftSize) {
+                processFrame()
+                newColumnCount++
+                // Shift buffer: keep last (fftSize - hopSize) samples
+                System.arraycopy(buffer, hopSize, buffer, 0, fftSize - hopSize)
+                samplesBuffered = fftSize - hopSize
+            }
+        }
+    }
+
+    /** Get number of new columns generated since the last call to this method. */
+    fun getNewColumns(): Int {
+        val count = newColumnCount
+        newColumnCount = 0
+        return count
+    }
+
+    private fun processFrame() {
+        // Apply Hanning window
+        val windowed = FloatArray(fftSize) { buffer[it] * hanning[it] }
+
+        // Compute FFT magnitude spectrum
+        val mag = fft.magnitudeSpectrum(windowed)
+
+        // Update spectrogram column
+        val col = spectrogram[currentCol]
+        for (b in 0 until numBins) {
+            val binIdx = minBin + b
+            val rawMag = mag[binIdx]
+            // Running energy normalization
+            binEnergy[b] = alpha * binEnergy[b] + (1 - alpha) * rawMag
+            col[b] = if (binEnergy[b] > 1e-6f) rawMag / binEnergy[b] else 0f
+        }
+
+        currentCol = (currentCol + 1) % historyCols
+    }
+
+    /** Get the current spectrogram as a 2D array in chronological order. */
+    fun getSpectrogram(): Array<FloatArray> {
+        val result = Array(historyCols) { i ->
+            val srcIdx = (currentCol + i) % historyCols
+            spectrogram[srcIdx].copyOf()
+        }
+        return result
+    }
+
+    /** Get the most recent column (current energy across all frequencies). */
+    fun getCurrentColumn(): FloatArray {
+        val prevCol = (currentCol - 1 + historyCols) % historyCols
+        return spectrogram[prevCol].copyOf()
+    }
+
+    /** Get a column by index from the history (0 = oldest, historyCols-1 = newest). */
+    fun getColumn(index: Int): FloatArray {
+        val clamped = index.coerceIn(0, historyCols - 1)
+        val srcIdx = (currentCol - historyCols + clamped + historyCols) % historyCols
+        return spectrogram[srcIdx].copyOf()
+    }
+
+    /** Find the frequency bin with peak energy. Returns -1 if no significant signal. */
+    fun findPeakBin(): Int {
+        val col = getCurrentColumn()
+        var maxBin = -1
+        var maxVal = 0f
+        for (i in col.indices) {
+            if (col[i] > maxVal) {
+                maxVal = col[i]
+                maxBin = i
+            }
+        }
+        return if (maxVal > 0.3f) maxBin else -1
+    }
+
+    /** Get energy at a specific bin over the last N columns in chronological order. */
+    fun getBinEnergy(bin: Int, numCols: Int): FloatArray {
+        val clamped = minOf(numCols, historyCols)
+        val result = FloatArray(clamped)
+        for (i in 0 until clamped) {
+            val colIdx = (currentCol - clamped + i + historyCols) % historyCols
+            result[i] = spectrogram[colIdx][bin]
+        }
+        return result
+    }
+
+    /** Get the bin index for a frequency in Hz. */
+    fun freqToBin(freqHz: Float): Int {
+        val bin = (freqHz * fftSize / sampleRate).toInt()
+        return (bin - minBin).coerceIn(0, numBins - 1)
+    }
+
+    /** Get the center frequency for a bin. */
+    fun binToFreq(bin: Int): Float {
+        return (minBin + bin).toFloat() * sampleRate / fftSize
+    }
+
+    fun reset() {
+        for (col in spectrogram) col.fill(0f)
+        currentCol = 0
+        samplesBuffered = 0
+        buffer.fill(0f)
+        binEnergy.fill(1f)
+    }
+}

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/model/AmSatReportSubmission.kt

@@ -0,0 +1,17 @@
+package com.rtbishop.look4sat.core.domain.model
+
+/** One public AMSAT satellite status report submission. */
+data class AmSatReportSubmission(
+    val name: String,
+    val report: String,
+    val callsign: String,
+    val gridSquare: String,
+    val reportedAtUtcMillis: Long
+)
+
+/** Result of submitting an AMSAT satellite status report. */
+data class AmSatReportSubmitResult(
+    val success: Boolean,
+    val message: String = "",
+    val reportId: String? = null
+)

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/model/AwardCalculator.kt

@@ -0,0 +1,194 @@
+/*
+ * Look4Sat. Amateur radio satellite tracker and pass predictor.
+ * Copyright (C) 2019-2026 Arty Bishop and contributors.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package com.rtbishop.look4sat.core.domain.model
+
+/**
+ * Award progress computed from the confirmed-QSO store.
+ *
+ * @param type      which award
+ * @param workedKeys matching keys for the boundary assets: each is compared
+ *                   against the region "code" field of the award's GeoJSON
+ *                   (e.g. WAPC -> "GD", WAJA -> "34", WAZ -> "24",
+ *                   WAS -> "CA", DXCC -> "318", VUCC -> "OL62").
+ * @param count     distinct worked units (grids / entities / provinces / ...)
+ * @param target    units required for the award
+ */
+data class AwardProgress(
+    val type: AwardType,
+    val workedKeys: Set<String>,
+    val count: Int,
+    val target: Int
+)
+
+enum class AwardType { DXCC, VUCC, WAPC, WAJA, WAZ, WAS }
+
+object AwardTargets {
+    const val DXCC = 100
+    const val VUCC = 100
+    const val WAPC = 34
+    const val WAJA = 47
+    const val WAZ = 40
+    const val WAS = 50
+}
+
+/**
+ * Derives six-award progress from the confirmed QSO store.
+ *
+ * Award rules (ADIF / award-program semantics):
+ *  - VUCC: distinct 4-char gridsquares.
+ *  - DXCC: distinct ARRL DXCC entities (from the QSO's dxcc field; falls back
+ *    to a callsign-prefix guess when LoTW omitted it).
+ *  - WAPC: distinct Chinese provinces (31 mainland STATE codes) plus the
+ *    Hong Kong / Macao / Taiwan entities (counted as their own provinces).
+ *  - WAJA: distinct Japanese prefectures (STATE code "01".."47").
+ *  - WAZ: distinct CQ zones.
+ *  - WAS: distinct US states (STATE abbreviations).
+ *
+ * The ADIF STATE field's meaning depends on the DXCC entity
+ * ("STATE depends on DXCC"), so every QSO is first classified by entity.
+ */
+object AwardCalculator {
+
+    fun calculate(qsosByGrid: Map<String, List<GridQso>>): List<AwardProgress> {
+        val all = qsosByGrid.values.flatten()
+        return listOf(
+            AwardProgress(
+                AwardType.VUCC,
+                workedKeys = qsosByGrid.keys,
+                count = qsosByGrid.size,
+                target = AwardTargets.VUCC
+            ),
+            calculateDxcc(all),
+            calculateWapc(all),
+            calculateWaja(all),
+            calculateWaz(all),
+            calculateWas(all)
+        )
+    }
+
+    private fun calculateDxcc(all: List<GridQso>): AwardProgress {
+        val keys = mutableSetOf<String>()
+        for (q in all) {
+            val code = q.dxcc ?: prefixEntityCode(q.call)
+            if (code != null) keys.add(code.toString())
+        }
+        return AwardProgress(AwardType.DXCC, keys, keys.size, AwardTargets.DXCC)
+    }
+
+    private fun calculateWapc(all: List<GridQso>): AwardProgress {
+        val keys = mutableSetOf<String>()
+        for (q in all) {
+            when (entityOf(q)) {
+                Entity.CHINA -> q.state?.trim()?.uppercase()?.takeIf { it in CN_STATES }?.let { keys.add(it) }
+                Entity.HONG_KONG -> keys.add(HK_CODE)
+                Entity.MACAO -> keys.add(MO_CODE)
+                Entity.TAIWAN -> keys.add(TW_CODE)
+                else -> {}
+            }
+        }
+        return AwardProgress(AwardType.WAPC, keys, keys.size, AwardTargets.WAPC)
+    }
+
+    private fun calculateWaja(all: List<GridQso>): AwardProgress {
+        val keys = mutableSetOf<String>()
+        for (q in all) {
+            if (entityOf(q) != Entity.JAPAN) continue
+            q.state?.trim()?.takeIf { it.length == 2 && it.all(Char::isDigit) }?.let { keys.add(it) }
+        }
+        return AwardProgress(AwardType.WAJA, keys, keys.size, AwardTargets.WAJA)
+    }
+
+    private fun calculateWaz(all: List<GridQso>): AwardProgress {
+        val keys = mutableSetOf<String>()
+        for (q in all) {
+            q.cqz?.takeIf { it in 1..40 }?.let { keys.add(it.toString()) }
+        }
+        return AwardProgress(AwardType.WAZ, keys, keys.size, AwardTargets.WAZ)
+    }
+
+    private fun calculateWas(all: List<GridQso>): AwardProgress {
+        val keys = mutableSetOf<String>()
+        for (q in all) {
+            if (entityOf(q) != Entity.USA) continue
+            q.state?.trim()?.uppercase()?.takeIf { it in US_STATES }?.let { keys.add(it) }
+        }
+        return AwardProgress(AwardType.WAS, keys, keys.size, AwardTargets.WAS)
+    }
+
+    private enum class Entity { CHINA, HONG_KONG, MACAO, TAIWAN, JAPAN, USA, OTHER }
+
+    private fun entityOf(q: GridQso): Entity = when (q.dxcc) {
+        318 -> Entity.CHINA
+        321 -> Entity.HONG_KONG
+        152 -> Entity.MACAO
+        386 -> Entity.TAIWAN
+        339 -> Entity.JAPAN
+        291 -> Entity.USA
+        else -> prefixEntity(q.call)
+    }
+
+    /** Coarse entity from callsign prefix, used when LoTW omitted the DXCC field. */
+    private fun prefixEntity(call: String): Entity {
+        val c = call.uppercase().substringBefore('/')
+        return when {
+            CN_PREFIXES.any { c.startsWith(it) } -> Entity.CHINA
+            c.startsWith("VR") -> Entity.HONG_KONG
+            c.startsWith("XX9") -> Entity.MACAO
+            TW_PREFIXES.any { c.startsWith(it) } -> Entity.TAIWAN
+            JP_PREFIXES.any { c.startsWith(it) } -> Entity.JAPAN
+            US_PREFIXES.any { c.startsWith(it) } -> Entity.USA
+            else -> Entity.OTHER
+        }
+    }
+
+    /** ARRL DXCC entity code guessed from callsign prefix (very coarse). */
+    private fun prefixEntityCode(call: String): Int? {
+        return when (prefixEntity(call)) {
+            Entity.CHINA -> 318
+            Entity.HONG_KONG -> 321
+            Entity.MACAO -> 152
+            Entity.TAIWAN -> 386
+            Entity.JAPAN -> 339
+            Entity.USA -> 291
+            else -> null
+        }
+    }
+
+    private val CN_PREFIXES = listOf("BA", "BD", "BG", "BH", "BI", "BY", "BJ", "BK", "BL", "BQ", "BR", "BS")
+    private val TW_PREFIXES = listOf("BM", "BV", "BU", "BW", "BX", "BN", "BO", "BT", "BZ")
+    private val JP_PREFIXES =
+        listOf("7J", "7K", "7L", "7M", "7N") + ('A'..'Z').map { "J$it" }
+    private val US_PREFIXES =
+        listOf("AA", "AB", "AC", "AD", "AE", "AF", "AG", "AH", "AI", "AJ", "AK", "AL", "K", "N", "W")
+
+    private val CN_STATES = setOf(
+        "AH", "BJ", "CQ", "FJ", "GD", "GS", "GX", "GZ", "HA", "HB", "HE", "HI", "HL", "HN", "JL",
+        "JS", "JX", "LN", "NM", "NX", "QH", "SC", "SD", "SH", "SN", "SX", "TJ", "XJ", "XZ", "YN", "ZJ"
+    )
+
+    private val US_STATES = setOf(
+        "AL", "AK", "AZ", "AR", "CA", "CO", "CT", "DE", "FL", "GA", "HI", "ID", "IL", "IN", "IA",
+        "KS", "KY", "LA", "ME", "MD", "MA", "MI", "MN", "MS", "MO", "MT", "NE", "NV", "NH", "NJ",
+        "NM", "NY", "NC", "ND", "OH", "OK", "OR", "PA", "RI", "SC", "SD", "TN", "TX", "UT", "VT",
+        "VA", "WA", "WV", "WI", "WY"
+    )
+
+    private const val HK_CODE = "HK"
+    private const val MO_CODE = "MO"
+    private const val TW_CODE = "TW"
+}

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/model/GridQso.kt

@@ -0,0 +1,78 @@
+/*
+ * Look4Sat. Amateur radio satellite tracker and pass predictor.
+ * Copyright (C) 2019-2026 Arty Bishop and contributors.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package com.rtbishop.look4sat.core.domain.model
+
+/**
+ * One confirmed satellite QSO as reported by LoTW, kept per worked gridsquare
+ * so the map can show, for any worked grid, which callsigns were worked there
+ * and when.
+ *
+ * @param call      opposite station callsign (as logged by the opposite op)
+ * @param epochMs   QSO date+time in UTC milliseconds
+ * @param satName   satellite name (e.g. "FO-29")
+ * @param mode      ADIF mode (FM / CW / SSB ...)
+ * @param bandUp    uplink band as reported by LoTW (BAND_RX: "70CM", "2M", "10M"...)
+ * @param bandDown  downlink band (BAND: "2M", "70CM"...) — may be empty when
+ *                  LoTW did not include it
+ * @param dxcc      ARRL DXCC entity code of the opposite station (from ADIF
+ *                  <DXCC>), or null when LoTW omitted it
+ * @param country   DXCC entity name (ADIF <COUNTRY>), or null
+ * @param cqz       CQ zone of the opposite station (ADIF <CQZ>), or null
+ * @param state     Primary administrative subdivision of the opposite station
+ *                  (ADIF <STATE>). Interpretation depends on the DXCC entity:
+ *                  China -> province code ("GD"), Japan -> prefecture number
+ *                  ("34"), USA -> state abbreviation ("CA"). Null when absent.
+ */
+data class GridQso(
+    val call: String,
+    val epochMs: Long,
+    val satName: String,
+    val mode: String,
+    val bandUp: String,
+    val bandDown: String,
+    val dxcc: Int? = null,
+    val country: String? = null,
+    val cqz: Int? = null,
+    val state: String? = null,
+    /** 4-char grid the station itself operated from (ADIF MY_GRIDSQUARE). */
+    val myGrid: String? = null
+) {
+    /** Short uplink/downlink band label ("U/V", "V/A"), or "" when unknown. */
+    val bandLabel: String
+        get() {
+            val up = bandAbbrev(bandUp)
+            val down = bandAbbrev(bandDown)
+            return when {
+                up.isNotEmpty() && down.isNotEmpty() -> "$up/$down"
+                up.isNotEmpty() -> up
+                else -> ""
+            }
+        }
+
+    private fun bandAbbrev(band: String): String = when (band.trim().uppercase()) {
+        "70CM" -> "U"
+        "2M" -> "V"
+        "10M" -> "A"
+        "6M" -> "V"
+        "1.2G" -> "L"
+        "2.4G" -> "S"
+        "23CM" -> "L"
+        "13CM" -> "S"
+        else -> band.trim().uppercase()
+    }
+}

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/model/LatestRelease.kt

@@ -0,0 +1,9 @@
+package com.rtbishop.look4sat.core.domain.model
+
+/** Latest release info fetched from the fork's GitHub releases API. */
+data class LatestRelease(
+    val versionTag: String, // e.g. "v4.4.6-ba7opf.6"
+    val title: String,      // release name, may be empty
+    val body: String,       // release notes / update description
+    val apkUrl: String?     // first .apk asset download URL, null if absent
+)

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/model/SatRadio.kt

@@ -32,5 +32,7 @@ data class SatRadio(
     @SerialName("uplink_high") val uplinkHigh: Long?,
     @SerialName("uplink_mode") val uplinkMode: String?,
     @SerialName("invert") val isInverted: Boolean,
-    @SerialName("norad_cat_id") val catnum: Int?
+    @SerialName("norad_cat_id") val catnum: Int?,
+    /** Set for manually imported transceivers, which remote updates must not replace. */
+    val isCustom: Boolean = false
 )

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/model/SatStatus.kt

@@ -20,13 +20,14 @@ data class SatSlot(
 /** One satellite day (12 two-hour slots) */
 data class SatDay(
     val dateLabel: String,   // "Aug 4"
-    val slots: List<SatSlot> // 12 槽(00-02 ... 22-24)
+    val slots: List<SatSlot>, // 12 槽(00-02 ... 22-24)
+    val streakCount: Int = 0 // 当天最近连续相同状态报告数(0 = 当天无报告)
 )
 
-/** One satellite, 5 days of state */
+/** One satellite, 3 days of state */
 data class SatStatus(
     val name: String,        // "AO-123_[FM]"
-    val days: List<SatDay>   // 5 天(新→旧)
+    val days: List<SatDay>   // 3 days (newest first)
 )
 
 /** Overall page parse result */

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/model/Settings.kt

@@ -29,7 +29,10 @@ data class PassesSettings(
     val minElevation: Double,
     val aosStartMinute: Int = 0,
     val aosEndMinute: Int = 23 * 60 + 59,
-    val invertAosTimeWindow: Boolean = false
+    val invertAosTimeWindow: Boolean = false,
+    val selectedModes: List<String>,
+    /** 历史过境回看窗口(小时): 过境列表从 now-hoursBefore 开始计算. */
+    val hoursBefore: Int = 0
 )
 
 data class RCSettings(
@@ -58,19 +61,46 @@ data class OtherSettings(
     val stateOfUtc: Boolean,
     val stateOfLightTheme: Boolean,
     val stateOfNightMode: Boolean = false,
+    val stateOfMapGrid: Boolean = false,
+    /** Grid mode: label worked (green) cells with the FIRST callsign worked
+     *  in that grid instead of the Maidenhead code; non-worked cells get no
+     *  label at all. */
+    val stateOfMapFirstCall: Boolean = false,
     val shouldSeeWarning: Boolean,
     val shouldSeeWhatsNew: Boolean,
     val sstvMode: String = "Auto",
     val lowElevation: Double = 15.0,
     val highElevation: Double = 45.0,
-    val radarCompassOffset: Float = 0f,
-    val radarCompassOffsetElev: Float = 0f
+    /** Independent auto-sync toggle for LoTW confirmed grids (separate from the
+     *  ephemeris auto-update; only effective after at least one manual sync). */
+    val stateOfAutoLotwSync: Boolean = true,
+    /** 指南针手动航向偏置(度, -180..180): 雷达方位 = 传感器方位 + 磁偏角 + 该偏置. */
+    val compassOffsetDegrees: Float = 0f
 )
 
 data class DataSourcesSettings(
     val satelliteUrls: List<String>,
-    val transceiversUrls: List<String>
-)
+    val transceiversUrls: List<String>,
+    val satelliteEnabled: List<Boolean> = emptyList(),
+    val transceiversEnabled: List<Boolean> = emptyList()
+) {
+    fun isSatelliteEnabled(index: Int): Boolean = satelliteEnabled.getOrElse(index) { true }
+    fun isTransceiverEnabled(index: Int): Boolean = transceiversEnabled.getOrElse(index) { true }
+}
+
+data class WavelogSettings(
+    val url: String = "",
+    val token: String = ""
+) {
+    val isConfigured: Boolean get() = url.isNotBlank() && token.isNotBlank()
+}
+
+data class LoTWSettings(
+    val callsign: String = "",
+    val password: String = ""
+) {
+    val isConfigured: Boolean get() = callsign.isNotBlank() && password.isNotBlank()
+}
 
 data class RadioControlSettings(
     val enabled: Boolean,

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/predict/CelestialComputer.kt

@@ -432,7 +432,7 @@ object CelestialComputer {
         daynum = sunrise + 0.001
         sunPos = getSunPosition(observer, daynumToMillis(daynum))
         guard = 0
-        while (sunPos.elevation > -threshold && guard++ < 500) {
+        while (sunPos.elevation >= -threshold && guard++ < 500) {
             daynum += 0.008
             sunPos = getSunPosition(observer, daynumToMillis(daynum))
         }

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/repository/IAmSatRepository.kt

@@ -1,9 +1,23 @@
 package com.rtbishop.look4sat.core.domain.repository
 
+import com.rtbishop.look4sat.core.domain.model.AmSatReportSubmission
+import com.rtbishop.look4sat.core.domain.model.AmSatReportSubmitResult
 import com.rtbishop.look4sat.core.domain.model.SatStatusPage
 
 /** AMSAT satellite status data source */
 interface IAmSatRepository {
-    /** Fetch and parse the AMSAT status page; null on failure */
-    suspend fun fetchStatus(): SatStatusPage?
+    /** Cached AMSAT status page for the current foreground session, if any. */
+    fun getCachedStatus(): SatStatusPage?
+
+    /** Fetch and parse the AMSAT status page; null on failure. */
+    suspend fun fetchStatus(forceRefresh: Boolean = false): SatStatusPage?
+
+    /** Warm the foreground-session cache without forcing a network reload. */
+    suspend fun prefetchStatus()
+
+    /** Clear the foreground-session status cache. */
+    fun clearStatusCache()
+
+    /** Submit a public AMSAT satellite status report. */
+    suspend fun submitReport(submission: AmSatReportSubmission): AmSatReportSubmitResult
 }

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/repository/ILoTWRepository.kt

@@ -0,0 +1,72 @@
+/*
+ * Look4Sat. Amateur radio satellite tracker and pass predictor.
+ * Copyright (C) 2019-2026 Arty Bishop and contributors.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package com.rtbishop.look4sat.core.domain.repository
+
+/** Fetches confirmed gridsquares directly from ARRL LoTW. */
+interface ILoTWRepository {
+
+    /**
+     * Fetch all confirmed (QSL_RCVD=Y) gridsquares for the given LoTW account.
+     * Returns the 4-char grid set with an explicit failure cause on error.
+     */
+    suspend fun fetchConfirmedGrids(callsign: String, password: String): LoTWResult
+
+    /**
+     * Same report, but keeps the per-QSO detail of every confirmed satellite
+     * QSO (call / time / satellite / mode / bands), grouped by worked 4-char
+     * gridsquare. Failure cause is kept explicit.
+     *
+     * @param since   QSL-since date ("yyyyMMdd" or "yyyy-MM-dd"); use an early
+     *                date for a full report, or the last sync date for an
+     *                incremental pull. Empty falls back to a full report.
+     * @param onProgress  streamed download progress (phase + bytes + estimate),
+     *                invoked from the IO dispatcher; may be called on every
+     *                read chunk.
+     */
+    suspend fun fetchConfirmedGridQsos(
+        callsign: String,
+        password: String,
+        since: String = "",
+        onProgress: (LoTWProgress) -> Unit = {}
+    ): LoTWResult
+}
+
+/** Streamed progress of a LoTW report download. */
+data class LoTWProgress(
+    val phase: LoTWPhase,
+    /** Bytes read so far (uncompressed body). */
+    val bytesRead: Long = 0,
+    /** Estimated total body bytes, derived from <APP_LoTW_NUMREC>; 0 before known. */
+    val expectedBytes: Long = 0,
+    /** Smoothed download speed in bytes/second; 0 while unknown. */
+    val speedBps: Long = 0,
+    /** Total QSL records reported in the header (<APP_LoTW_NUMREC>); 0 before known. */
+    val qsoCount: Long = 0
+) {
+    /** Fraction 0..1 of the estimated body already read; 0 while unknown. */
+    val fraction: Float
+        get() = if (expectedBytes > 0 && bytesRead > 0)
+            (bytesRead.toFloat() / expectedBytes).coerceIn(0f, 1f) else 0f
+
+    /** Estimated seconds remaining; 0 while size or speed is unknown. */
+    val remainingSeconds: Long
+        get() = if (expectedBytes > 0 && speedBps > 0)
+            ((expectedBytes - bytesRead) / speedBps).coerceAtLeast(0) else 0L
+}
+
+enum class LoTWPhase { Connecting, Downloading }

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/repository/IMainContainer.kt

@@ -16,12 +16,13 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 package com.rtbishop.look4sat.core.domain.repository
-
+import com.rtbishop.look4sat.core.domain.model.SatRadio
 import com.rtbishop.look4sat.core.domain.usecase.IAddToCalendar
 import com.rtbishop.look4sat.core.domain.usecase.IAudioCapture
 import com.rtbishop.look4sat.core.domain.usecase.ISaveImage
 import com.rtbishop.look4sat.core.domain.usecase.IShowToast
 import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.flow.StateFlow
 
 interface IMainContainer {
     val appScope: CoroutineScope
@@ -30,7 +31,12 @@ interface IMainContainer {
     val satelliteRepo: ISatelliteRepo
     val databaseRepo: IDatabaseRepo
     val amSatRepo: IAmSatRepository
+    val updateRepo: IUpdateRepository
+    val wavelogRepo: IWavelogRepository
+    val lotwRepo: com.rtbishop.look4sat.core.domain.repository.ILoTWRepository
     val radioTrackingService: IRadioTrackingService
+    val mutualPassData: StateFlow<MutualPassData>
+    fun setMutualPassData(data: MutualPassData)
     fun provideAddToCalendar(): IAddToCalendar
     fun provideShowToast(): IShowToast
     fun provideBluetoothReporter(): IReporter
@@ -40,9 +46,27 @@ interface IMainContainer {
     fun provideRxRadioController(): IRadioController
     fun provideAudioCapture(): IAudioCapture
     fun provideSaveImage(): ISaveImage
-    fun providePairedBluetoothDevices(): List<Pair<String, String>>
 }
 
+data class MutualPassData(
+    val samples: List<Pair<Long, Pair<Double, Double>>> = emptyList(),
+    val trackSamples: List<TrackSampleData> = emptyList(),
+    val startTime: Long = 0L,
+    val endTime: Long = 0L,
+    val maxElev: Double = 10.0,
+    val labelA: String = "你",
+    val labelB: String = "友台"
+)
+
+/** Minimal track sample for cross-module sharing (angles in degrees). */
+data class TrackSampleData(
+    val time: Long = 0L,
+    val azimuthA: Double,
+    val elevationA: Double,
+    val azimuthB: Double,
+    val elevationB: Double
+)
+
 interface IContainerProvider {
     fun getMainContainer(): IMainContainer
 }

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/repository/ISelectionRepo.kt

@@ -21,10 +21,10 @@ import com.rtbishop.look4sat.core.domain.model.SatItem
 import kotlinx.coroutines.flow.Flow
 
 interface ISelectionRepo {
-    fun getCurrentModes(): List<String>
-    fun getModesList(): List<String>
+    fun getCurrentTypes(): List<String>
+    fun getTypesList(): List<String>
     suspend fun getEntriesFlow(): Flow<List<SatItem>>
-    suspend fun setModes(modes: List<String>)
+    suspend fun setTypes(types: List<String>)
     suspend fun setQuery(query: String)
     suspend fun setSelection(selectAll: Boolean)
     suspend fun setSelection(ids: List<Int>, isTicked: Boolean)

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/repository/ISensorsRepo.kt

@@ -20,8 +20,19 @@ package com.rtbishop.look4sat.core.domain.repository
 import com.rtbishop.look4sat.core.domain.predict.GeoPos
 import kotlinx.coroutines.flow.StateFlow
 
+/** 指南针校准精度等级, 由磁场传感器 accuracy 事件映射而来. */
+enum class CompassAccuracy {
+    UNAVAILABLE,
+    UNRELIABLE,
+    LOW,
+    MEDIUM,
+    HIGH
+}
+
 interface ISensorsRepo {
     val sensorData: StateFlow<Pair<Float, Float>>
+    /** 指南针当前校准精度 (磁场传感器 accuracy), 用于校准对话框进度. */
+    val compassAccuracy: StateFlow<CompassAccuracy>
     fun getMagDeclination(geoPos: GeoPos, time: Long = System.currentTimeMillis()): Float
     fun enableSensor()
     fun disableSensor()

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/repository/ISettingsRepo.kt

@@ -23,6 +23,7 @@ import com.rtbishop.look4sat.core.domain.model.OtherSettings
 import com.rtbishop.look4sat.core.domain.model.PassesSettings
 import com.rtbishop.look4sat.core.domain.model.RCSettings
 import com.rtbishop.look4sat.core.domain.model.RadioControlSettings
+import com.rtbishop.look4sat.core.domain.model.WavelogSettings
 import com.rtbishop.look4sat.core.domain.predict.GeoPos
 import kotlinx.coroutines.flow.StateFlow
 
@@ -32,9 +33,9 @@ interface ISettingsRepo {
 
     //region # Satellites selection settings
     val selectedIds: StateFlow<List<Int>>
-    val selectedSatModes: StateFlow<List<String>>
+    val selectedTypes: StateFlow<List<String>>
     fun setSelectedIds(ids: List<Int>)
-    fun setSelectedSatModes(modes: List<String>)
+    fun setSelectedTypes(types: List<String>)
     //endregion
 
     //region # Passes filter settings
@@ -51,6 +52,8 @@ interface ISettingsRepo {
 
     //region # Database update settings
     val databaseState: StateFlow<DatabaseState>
+    fun getSatelliteTypesIds(types: List<String>): List<Int>
+    fun setSatelliteTypeIds(type: String, ids: List<Int>)
     fun updateDatabaseState(state: DatabaseState)
     //endregion
 
@@ -71,6 +74,11 @@ interface ISettingsRepo {
     fun updateDataSourcesSettings(settings: DataSourcesSettings)
     //endregion
 
+    //region # Data sources status
+    val dataSourcesStatus: StateFlow<Map<String, Int>>
+    fun updateDataSourcesStatus(status: Map<String, Int>)
+    //endregion
+
     //region # Radio control settings
     val radioControlSettings: StateFlow<RadioControlSettings>
     fun updateRadioControlSettings(settings: RadioControlSettings)
@@ -80,4 +88,33 @@ interface ISettingsRepo {
     fun getSatelliteOffset(catnum: Int): String
     fun setSatelliteOffset(catnum: Int, offset: String)
     //endregion
+
+    //region # AMSAT status report settings
+    fun getAmSatCallsign(): String
+    fun setAmSatCallsign(callsign: String)
+    //endregion
+
+    //region # Wavelog worked-grids settings
+    val wavelogSettings: StateFlow<WavelogSettings>
+    fun updateWavelogSettings(settings: WavelogSettings)
+    fun getWorkedGrids(): Set<String>
+    fun setWorkedGrids(grids: Set<String>)
+    /** Confirmed satellite QSOs grouped by worked 4-char gridsquare (map tap detail). */
+    fun getWorkedGridQsos(): Map<String, List<com.rtbishop.look4sat.core.domain.model.GridQso>>
+    fun setWorkedGridQsos(qsos: Map<String, List<com.rtbishop.look4sat.core.domain.model.GridQso>>)
+    /** Distinct 4-char gridsquares the account operated from (LoTW <MY_GRIDSQUARE>). */
+    fun getRoamedGrids(): Set<String>
+    fun setRoamedGrids(grids: Set<String>)
+    //endregion
+
+    //region # LoTW confirmed-grids settings
+    val lotwSettings: StateFlow<com.rtbishop.look4sat.core.domain.model.LoTWSettings>
+    fun updateLoTWSettings(settings: com.rtbishop.look4sat.core.domain.model.LoTWSettings)
+    /** Last successful LoTW sync date ("yyyyMMdd", empty when never synced). */
+    fun getLastLotwSyncDate(): String
+    fun setLastLotwSyncDate(date: String)
+    /** Callsign of the last successful LoTW sync (empty when never synced). */
+    fun getLastLotwSyncCallsign(): String
+    fun setLastLotwSyncCallsign(callsign: String)
+    //endregion
 }

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/repository/IUpdateRepository.kt

@@ -0,0 +1,12 @@
+package com.rtbishop.look4sat.core.domain.repository
+
+import com.rtbishop.look4sat.core.domain.model.LatestRelease
+import java.io.File
+
+interface IUpdateRepository {
+    /** Fetch the latest release of the fork repo from GitHub; null on failure. */
+    suspend fun getLatestRelease(): LatestRelease?
+
+    /** Download the release APK from [url] into [dest]; true on success. */
+    suspend fun downloadApk(url: String, dest: File): Boolean
+}

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/repository/IWavelogRepository.kt

@@ -0,0 +1,28 @@
+/*
+ * Look4Sat. Amateur radio satellite tracker and pass predictor.
+ * Copyright (C) 2019-2026 Arty Bishop and contributors.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package com.rtbishop.look4sat.core.domain.repository
+
+/** Fetches worked gridsquares from a self-hosted Wavelog instance (API v2). */
+interface IWavelogRepository {
+
+    /**
+     * Fetch worked grids for the configured Wavelog URL/token.
+     * Returns the grid set, or null on any failure.
+     */
+    suspend fun fetchWorkedGrids(url: String, token: String): Set<String>?
+}

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/repository/LoTWGridSync.kt

@@ -0,0 +1,169 @@
+/*
+ * Look4Sat. Amateur radio satellite tracker and pass predictor.
+ * Copyright (C) 2019-2026 Arty Bishop and contributors.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package com.rtbishop.look4sat.core.domain.repository
+
+import com.rtbishop.look4sat.core.domain.model.GridQso
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
+import java.text.SimpleDateFormat
+import java.util.Date
+import java.util.Locale
+import java.util.TimeZone
+
+/**
+ * Shared LoTW sync orchestration used by BOTH the manual sync (settings screen)
+ * and the automatic sync on app start (MainApplication), so the two paths can
+ * never drift apart:
+ *
+ * - [LoTWSyncMode.Incremental] pulls only the confirmations since the last sync
+ *   and MERGES them into the stored grids/QSOs (grids only grow; QSO detail is
+ *   deduped by call + QSO time).
+ * - [LoTWSyncMode.Full] pulls everything and REPLACES the stored data.
+ */
+
+/**
+ * UTC date ("yyyyMMdd") of the given instant — the "already synced today"
+ * gate granularity.
+ */
+fun lotwSyncToday(now: Long = System.currentTimeMillis()): String =
+    SimpleDateFormat("yyyyMMdd", Locale.US)
+        .apply { timeZone = TimeZone.getTimeZone("UTC") }
+        .format(Date(now))
+
+/**
+ * Full UTC timestamp cursor ("yyyy-MM-dd HH:mm:ss") written after a
+ * successful sync. This is exactly the format LoTW's qso_qslsince accepts
+ * (measured live 2026-09-17: the legacy "yyyyMMdd" cursor is silently
+ * ignored by LoTW, which falls back to its own system-supplied default),
+ * and it keeps enough precision to display the last-sync time like the
+ * ephemeris update time.
+ */
+fun lotwSyncCursor(now: Long = System.currentTimeMillis()): String =
+    SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.US)
+        .apply { timeZone = TimeZone.getTimeZone("UTC") }
+        .format(Date(now))
+
+/** Date part of a stored cursor as "yyyyMMdd", tolerating the legacy
+ *  "yyyyMMdd" format and the current "yyyy-MM-dd HH:mm:ss" format. */
+fun lotwCursorDate(cursor: String): String = when {
+    cursor.length >= 10 && cursor[4] == '-' -> cursor.substring(0, 10).replace("-", "")
+    else -> cursor.take(8)
+}
+
+/** qso_qslsince value for the API: passes the full timestamp through and
+ *  normalizes a legacy "yyyyMMdd" cursor to the documented "yyyy-MM-dd". */
+fun lotwCursorApi(cursor: String): String = when {
+    cursor.isBlank() -> ""
+    cursor.length >= 10 && cursor[4] == '-' -> cursor
+    else -> "${cursor.take(4)}-${cursor.substring(4, 6)}-${cursor.substring(6, 8)}"
+}
+
+/** Stored cursor parsed to UTC epoch ms for display; 0 when unparseable. */
+fun lotwCursorEpochMs(cursor: String): Long = try {
+    val pattern = if (cursor.length >= 10 && cursor[4] == '-') "yyyy-MM-dd HH:mm:ss" else "yyyyMMdd"
+    SimpleDateFormat(pattern, Locale.US)
+        .apply { timeZone = TimeZone.getTimeZone("UTC") }
+        .parse(cursor)?.time ?: 0L
+} catch (_: Exception) {
+    0L
+}
+
+/**
+ * Resolves the effective sync mode for a given request:
+ * - an explicit [LoTWSyncMode.Full] request is always honored;
+ * - an [LoTWSyncMode.Incremental] request is honored only when the callsign
+ *   matches the last sync — a first sync, an unknown/empty record or a
+ *   callsign change falls back to [LoTWSyncMode.Full] so no stale grids from
+ *   another account linger.
+ * With [requested] == null (automatic sync) it picks incremental whenever
+ * possible and full otherwise.
+ */
+fun resolveLoTWSyncMode(
+    lastSyncCallsign: String,
+    callsign: String,
+    requested: LoTWSyncMode?
+): LoTWSyncMode {
+    if (requested == LoTWSyncMode.Full) return LoTWSyncMode.Full
+    val sameCall = lastSyncCallsign.isNotBlank() && lastSyncCallsign == callsign
+    return if (sameCall) LoTWSyncMode.Incremental else LoTWSyncMode.Full
+}
+
+/**
+ * Whether the automatic LoTW sync should run now — mirrors the ephemeris
+ * auto-update check: credentials configured, the LoTW auto-sync toggle on, at
+ * least one prior manual sync (the first sync stays manual/full), and not
+ * already synced today (ARRL limits report pulls, ~once a day per account).
+ */
+fun shouldAutoSyncLoTW(
+    isConfigured: Boolean,
+    autoLotwSyncEnabled: Boolean,
+    lastSyncDate: String,
+    today: String
+): Boolean {
+    val lastDate = lotwCursorDate(lastSyncDate)
+    return isConfigured && autoLotwSyncEnabled && lastDate.isNotBlank() && lastDate != today
+}
+
+/**
+ * Applies a successful LoTW report to the stored grid data and advances the
+ * sync cursor so the next incremental pull asks LoTW for only the
+ * confirmations since today. Persistence runs on the IO dispatcher — building
+ * the per-grid QSO JSON and writing SharedPreferences blocks the calling
+ * thread, and for large accounts (multi-MB JSON) that froze the main thread
+ * after a manual sync ('bar done but app stuck').
+ *
+ * @return the resulting number of worked grids.
+ */
+suspend fun applyLoTWGridResult(
+    settingsRepo: ISettingsRepo,
+    result: LoTWResult.Success,
+    mode: LoTWSyncMode,
+    callsign: String,
+    now: Long = System.currentTimeMillis()
+): Int {
+    val existingGrids = settingsRepo.getWorkedGrids()
+    val existingQsos = settingsRepo.getWorkedGridQsos()
+    val existingRoamed = settingsRepo.getRoamedGrids()
+    val mergedGrids = if (mode == LoTWSyncMode.Incremental) existingGrids + result.grids else result.grids
+    val mergedQsos = if (mode == LoTWSyncMode.Incremental) mergeGridQsos(existingQsos, result.qsos) else result.qsos
+    val mergedRoamed = if (mode == LoTWSyncMode.Incremental) existingRoamed + result.roamedGrids else result.roamedGrids
+    settingsRepo.setLastLotwSyncDate(lotwSyncCursor(now))
+    settingsRepo.setLastLotwSyncCallsign(callsign)
+    withContext(Dispatchers.IO) {
+        settingsRepo.setWorkedGrids(mergedGrids)
+        settingsRepo.setWorkedGridQsos(mergedQsos)
+        settingsRepo.setRoamedGrids(mergedRoamed)
+    }
+    return mergedGrids.size
+}
+
+/** Merge fresh QSO detail into existing per-grid lists, dedup by call + QSO time. */
+fun mergeGridQsos(
+    existing: Map<String, List<GridQso>>,
+    fresh: Map<String, List<GridQso>>
+): Map<String, List<GridQso>> {
+    val merged = existing.mapValues { (_, list) -> list.toMutableList() }.toMutableMap()
+    fresh.forEach { (grid, list) ->
+        val target = merged.getOrPut(grid) { mutableListOf() }
+        val known = target.mapTo(mutableSetOf()) { it.call to it.epochMs }
+        list.forEach { qso ->
+            if (known.add(qso.call to qso.epochMs)) target.add(qso)
+        }
+    }
+    return merged
+}

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/repository/LoTWResult.kt

@@ -0,0 +1,51 @@
+/*
+ * Look4Sat. Amateur radio satellite tracker and pass predictor.
+ * Copyright (C) 2019-2026 Arty Bishop and contributors.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package com.rtbishop.look4sat.core.domain.repository
+
+/** Result of a LoTW report fetch, with the failure cause kept explicit. */
+sealed class LoTWResult {
+
+    /** Report downloaded and parsed successfully. */
+    data class Success(
+        val grids: Set<String>,
+        val qsos: Map<String, List<com.rtbishop.look4sat.core.domain.model.GridQso>>,
+        /** Distinct 4-char gridsquares the account itself operated from
+         *  (ADIF <MY_GRIDSQUARE>, satellite QSOs only) — "roamed/activated" grids. */
+        val roamedGrids: Set<String> = emptySet()
+    ) : LoTWResult()
+
+    /** HTTP 200 but LoTW replied with its login-error page (bad callsign/password). */
+    data object BadCredentials : LoTWResult()
+
+    /**
+     * Report endpoint refused the request without a usable error page. LoTW
+     * limits downloads to one in progress per user id and flags accounts that
+     * pull the full report too often; the server answers those with a bare
+     * non-ADIF body (no <eoh>).
+     */
+    data object RateLimited : LoTWResult()
+
+    /** Connect/read timed out — typically a slow route to the ARRL servers. */
+    data object Timeout : LoTWResult()
+
+    /** Any other network-level failure (DNS, TLS, connection reset, HTTP 5xx). */
+    data class NetworkError(val detail: String) : LoTWResult()
+}
+
+/** What a LoTW sync does: pull everything, or only new QSLs since the last sync. */
+enum class LoTWSyncMode { Full, Incremental }

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/source/ILocalSource.kt

@@ -31,6 +31,9 @@ interface ILocalSource {
     suspend fun getIdsWithModes(modes: List<String>): List<Int>
     suspend fun getRadiosTotal(): Int
     suspend fun getRadiosWithId(id: Int): List<SatRadio>
-    suspend fun insertRadios(radios: List<SatRadio>)
+    suspend fun insertRadios(radios: List<SatRadio>, isCustom: Boolean = false)
+
+    /** Delete all non-custom transceivers, keeping manually imported ones. */
+    suspend fun deleteManagedRadios()
     suspend fun deleteRadios()
 }

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/source/IRemoteSource.kt

@@ -19,9 +19,18 @@ package com.rtbishop.look4sat.core.domain.source
 
 import java.io.InputStream
 
+/** Result of a network download: the HTTP status code and the response body stream. */
+data class NetworkResult(val code: Int, val stream: InputStream?) {
+    companion object {
+        /** Code used when a request fails before any HTTP response is received. */
+        const val CONNECTION_ERROR = -1
+    }
+}
+
 interface IRemoteSource {
     suspend fun getFileStream(uri: String): InputStream?
-    suspend fun getNetworkStream(url: String): InputStream?
+    suspend fun getNetworkStream(url: String): NetworkResult
     suspend fun getAmSatCatalog(): String?
     suspend fun getAmSatReports(hours: Int, limit: Int): String?
+    suspend fun submitAmSatReport(payloadJson: String): Pair<Int, String>?
 }

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/source/Sources.kt

@@ -18,25 +18,41 @@
 package com.rtbishop.look4sat.core.domain.source
 
 object Sources {
-    val satelliteDataUrls = listOf(
-        "celestrak.org/NORAD/elements/gp.php?GROUP=active&FORMAT=csv",
-        "db.satnogs.org/api/tle/?format=3le",
-        "amsat.org/tle/current/nasabare.txt",
-        "mmccants.org/tles/classfd.zip",
-        "r4uab.ru/satonline.txt",
-        "live.ariss.org/iss.txt"
+    val satelliteDataUrls = mapOf(
+        "LAPAN-A2" to "https://www.kaggle.com/api/v1/datasets/download/muazamnugroho/lapan-a2-satellite-two-line-element-tle-dataset/LAPAN-A2_TLE_latest.txt",
+        "R4UAB" to "https://r4uab.ru/satonline.txt",
+        "All" to "https://celestrak.org/NORAD/elements/gp.php?GROUP=active&FORMAT=csv",
+        "SatNOGS" to "https://db.satnogs.org/api/tle/?format=3le",
+        "Amateur" to "https://celestrak.org/NORAD/elements/gp.php?GROUP=amateur&FORMAT=csv",
+        "Brightest" to "https://celestrak.org/NORAD/elements/gp.php?GROUP=visual&FORMAT=csv",
+        "Cubesat" to "https://celestrak.org/NORAD/elements/gp.php?GROUP=cubesat&FORMAT=csv",
+        "Education" to "https://celestrak.org/NORAD/elements/gp.php?GROUP=education&FORMAT=csv",
+        "Engineer" to "https://celestrak.org/NORAD/elements/gp.php?GROUP=engineering&FORMAT=csv",
+        "Geostationary" to "https://celestrak.org/NORAD/elements/gp.php?GROUP=geo&FORMAT=csv",
+        "Globalstar" to "https://celestrak.org/NORAD/elements/gp.php?GROUP=globalstar&FORMAT=csv",
+        "GNSS" to "https://celestrak.org/NORAD/elements/gp.php?GROUP=gnss&FORMAT=csv",
+        "Intelsat" to "https://celestrak.org/NORAD/elements/gp.php?GROUP=intelsat&FORMAT=csv",
+        "Iridium" to "https://celestrak.org/NORAD/elements/gp.php?GROUP=iridium-NEXT&FORMAT=csv",
+        "Military" to "https://celestrak.org/NORAD/elements/gp.php?GROUP=military&FORMAT=csv",
+        "New" to "https://celestrak.org/NORAD/elements/gp.php?GROUP=last-30-days&FORMAT=csv",
+        "OneWeb" to "https://celestrak.org/NORAD/elements/gp.php?GROUP=oneweb&FORMAT=csv",
+        "Orbcomm" to "https://celestrak.org/NORAD/elements/gp.php?GROUP=orbcomm&FORMAT=csv",
+        "Resource" to "https://celestrak.org/NORAD/elements/gp.php?GROUP=resource&FORMAT=csv",
+        "CelesTrak SatNOGS" to "https://celestrak.org/NORAD/elements/gp.php?GROUP=satnogs&FORMAT=csv",
+        "Science" to "https://celestrak.org/NORAD/elements/gp.php?GROUP=science&FORMAT=csv",
+        "Spire" to "https://celestrak.org/NORAD/elements/gp.php?GROUP=spire&FORMAT=csv",
+        "Starlink" to "https://celestrak.org/NORAD/elements/gp.php?GROUP=starlink&FORMAT=csv",
+        "Swarm" to "https://celestrak.org/NORAD/elements/gp.php?GROUP=swarm&FORMAT=csv",
+        "Weather" to "https://celestrak.org/NORAD/elements/gp.php?GROUP=weather&FORMAT=csv",
+        "X-Comm" to "https://celestrak.org/NORAD/elements/gp.php?GROUP=x-comm&FORMAT=csv",
+        "Amsat" to "https://amsat.org/tle/current/nasabare.txt",
+        "Classified" to "https://www.mmccants.org/tles/classfd.zip",
+        "McCants" to "https://www.mmccants.org/tles/inttles.zip",
+        "ARISS" to "https://live.ariss.org/iss.txt",
+        "Other" to "" // key for sats filter
     )
-    val transceiversDataUrls = listOf(
-        "db.satnogs.org/api/transmitters/?format=json&status=active",
-        "r4uab.ru/transmitters.json"
-    )
-    val satelliteModes = listOf(
-        "4FSK", "64-QAM", "AFSK", "AFSK TUBiX10", "AHRPT", "AM", "APT", "ASK", "BPSK",
-        "BPSK PMT-A3", "CERTO", "CW", "DATV", "DBPSK", "DOKA", "DPSK", "DQPSK", "DSB", "DSTAR",
-        "DUV", "DVB-S2", "FFSK", "FM", "FMN", "FSK", "FSK AX.100 Mode 5", "FSK AX.100 Mode 6",
-        "FSK AX.25 G3RUH", "FT8", "GENESIS FSK", "GFSK", "GFSK Pkst", "GFSK Rktr", "GFSK/BPSK",
-        "GMSK", "GMSK USP", "HRPT", "LoRa", "LRPT", "LSB", "MFSK", "MSK", "MSK AX.100 Mode 5",
-        "MSK AX.100 Mode 6", "OFDM", "OQPSK", "PPM", "PSK", "PSK31", "PSK63", "QPSK", "QPSK31",
-        "QPSK63", "SIDLOC", "SQPSK", "SSDV", "SSTV", "UNKNOWN", "USB", "WSJT"
+    val transceiversDataUrls = mapOf(
+        "SatNOGS" to "https://db.satnogs.org/api/transmitters/?format=json&status=active",
+        "R4UAB" to "https://r4uab.ru/transmitters.json"
     )
 }

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/utility/DataParser.kt

@@ -91,7 +91,7 @@ class DataParser(private val dispatcher: CoroutineDispatcher) {
         val line1 = tle[1]
         val line2 = tle[2]
         OrbitalData(
-            name = tle[0].trim().removePrefix("0 "),
+            name = tle[0].trim(),
             epoch = line1.substring(18, 32).toDouble(),
             meanmo = line2.substring(52, 63).toDouble(),
             eccn = line2.substring(26, 33).toDouble() / 1e7,

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/utility/DopplerFrequencyCalculator.kt

@@ -16,18 +16,28 @@ import java.util.Locale
 /**
  * Computes Doppler-corrected reciprocal frequencies for linear transponders.
  *
- * For a linear (passband) transponder, uplink and downlink frequencies are
- * related by a fixed passband offset. When the satellite moves, both are
- * Doppler-shifted. Given one, this computes the other:
+ * The full physical path:
  *
- *   downlink → uplink: mapDownlinkToUplink (passband) → getUplinkFreq (Doppler)
- *   uplink → downlink: mapUplinkToDownlink (passband) → getDownlinkFreq (Doppler)
+ * TX→RX (uplink → downlink):
+ *   ① 地面发射 f_tx
+ *   ② 卫星收到 f_tx × (c - v) / c  （上行多普勒）
+ *   ③ 卫星转发 = passband映射(②)    （在卫星上做映射）
+ *   ④ 地面听到 ③ × (c - v) / c     （下行多普勒）
+ *
+ * RX→TX (downlink → uplink):
+ *   ④ 地面听到 f_rx
+ *   ③ 卫星转发 = f_rx × (c + v) / c  （逆下行多普勒）
+ *   ② 卫星收到 = 逆passband映射(③)
+ *   ① 地面应发射 = ② × (c + v) / c   （逆上行多普勒）
+ *
+ * Addresses GitHub issue #91 (Custom frequency Doppler correction).
  */
 object DopplerFrequencyCalculator {
 
     /**
-     * Given a downlink frequency, compute the Doppler-corrected uplink frequency.
-     * Returns null if the transponder is not a linear passband type.
+     * Given a downlink frequency (what the user hears), compute the
+     * uplink frequency the user should transmit.
+     * Full path: ④→③→②→①
      */
     fun computeUplinkFromDownlink(
         downlinkHz: Long,
@@ -35,17 +45,22 @@ object DopplerFrequencyCalculator {
         orbitalPos: OrbitalPos
     ): Long? {
         if (!isLinearTransponder(transponder)) return null
-        val baseUplink = TransponderMapper.mapDownlinkToUplink(downlinkHz, transponder) ?: return null
-        return orbitalPos.getUplinkFreq(baseUplink)
+        // ④→③ 逆下行多普勒：卫星转发的频率
+        val satTx = orbitalPos.getUplinkFreq(downlinkHz)
+        // ③→② 逆 passband 映射
+        val satRx = TransponderMapper.mapDownlinkToUplink(satTx, transponder) ?: return null
+        // ②→① 逆上行多普勒：地面应发射的频率
+        return orbitalPos.getUplinkFreq(satRx)
     }
 
     /**
-     * Given a downlink frequency, compute the Doppler-corrected uplink frequency
-     * with an offset applied to the downlink (in Hz).
-     * Returns null if the transponder is not a linear passband type.
+     * Given a downlink frequency (what the user hears), compute the
+     * uplink frequency the user should transmit, with an offset applied
+     * to the downlink (in Hz).
+     * Full path: ④→③→②→①
      *
      * The user-entered downlink frequency already includes the offset, so subtract
-     * it before mapping the downlink passband position back to the uplink.
+     * it before the inverse downlink Doppler.
      */
     fun computeUplinkFromDownlinkWithOffset(
         downlinkHz: Long,
@@ -54,13 +69,20 @@ object DopplerFrequencyCalculator {
         offsetHz: Long
     ): Long? {
         if (!isLinearTransponder(transponder)) return null
-        val baseUplink = TransponderMapper.mapDownlinkToUplink(downlinkHz - offsetHz, transponder) ?: return null
-        return orbitalPos.getUplinkFreq(baseUplink)
+        // ④→③ 逆下行多普勒：卫星转发的频率（含 offset）
+        val satTxWithOffset = orbitalPos.getUplinkFreq(downlinkHz)
+        // ③ 去掉 offset（offset 在卫星本地频率域）
+        val satTx = satTxWithOffset - offsetHz
+        // ③→② 逆 passband 映射
+        val satRx = TransponderMapper.mapDownlinkToUplink(satTx, transponder) ?: return null
+        // ②→① 逆上行多普勒：地面应发射的频率
+        return orbitalPos.getUplinkFreq(satRx)
     }
 
     /**
-     * Given an uplink frequency, compute the Doppler-corrected downlink frequency.
-     * Returns null if the transponder is not a linear passband type.
+     * Given an uplink frequency (what the user transmits), compute the
+     * downlink frequency the user will hear.
+     * Full path: ①→②→③→④
      */
     fun computeDownlinkFromUplink(
         uplinkHz: Long,
@@ -68,14 +90,19 @@ object DopplerFrequencyCalculator {
         orbitalPos: OrbitalPos
     ): Long? {
         if (!isLinearTransponder(transponder)) return null
-        val baseDownlink = TransponderMapper.mapUplinkToDownlink(uplinkHz, transponder) ?: return null
-        return orbitalPos.getDownlinkFreq(baseDownlink)
+        // ①→② 上行多普勒：卫星收到的频率
+        val satRx = orbitalPos.getDownlinkFreq(uplinkHz)
+        // ②→③ passband 映射
+        val satTx = TransponderMapper.mapUplinkToDownlink(satRx, transponder) ?: return null
+        // ③→④ 下行多普勒：地面听到的
+        return orbitalPos.getDownlinkFreq(satTx)
     }
 
     /**
-     * Given an uplink frequency, compute the Doppler-corrected downlink frequency
-     * with an offset applied to the downlink (in Hz).
-     * Returns null if the transponder is not a linear passband type.
+     * Given an uplink frequency (what the user transmits), compute the
+     * downlink frequency the user will hear, with an offset applied
+     * to the downlink (in Hz).
+     * Full path: ①→②→③→④
      */
     fun computeDownlinkFromUplinkWithOffset(
         uplinkHz: Long,
@@ -84,8 +111,13 @@ object DopplerFrequencyCalculator {
         offsetHz: Long
     ): Long? {
         if (!isLinearTransponder(transponder)) return null
-        val baseDownlink = TransponderMapper.mapUplinkToDownlink(uplinkHz, transponder) ?: return null
-        return orbitalPos.getDownlinkFreq(baseDownlink + offsetHz)
+        // ①→② 上行多普勒：卫星收到的频率
+        val satRx = orbitalPos.getDownlinkFreq(uplinkHz)
+        // ②→③ passband 映射
+        val satTx = TransponderMapper.mapUplinkToDownlink(satRx, transponder) ?: return null
+        // ③ 加上 offset（offset 在卫星本地频率域）
+        // ③→④ 下行多普勒：地面听到的
+        return orbitalPos.getDownlinkFreq(satTx + offsetHz)
     }
 
     /** True if this transponder supports linear passband mapping. */
@@ -102,8 +134,8 @@ object DopplerFrequencyCalculator {
      * True for the radio entry that should drive the standalone Calculator page.
      *
      * A frequency range alone is not enough: some non-user-facing or drifting data entries
-     * can also have low/high frequencies. The calculator is meant for named linear
-     * transponders, e.g. "Linear Transponder", "Linear Transp.", "SSB Transponder".
+     * can also have low/high frequencies. The calculator is meant for the named linear
+     * transponder entry, e.g. "Linear Transponder", "Linear Transp.", "SSB Transponder".
      */
     fun isNamedLinearTransponder(transponder: SatRadio): Boolean {
         if (!isLinearTransponder(transponder)) return false

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/utility/Extensions.kt

@@ -41,21 +41,6 @@ fun Double.round(decimals: Int): Double {
     return kotlin.math.round(this * multiplier) / multiplier
 }
 
-fun String.aprsPasscode(): Int {
-    val callsign = this.trim().uppercase().substringBefore('-') // commonly strip SSID
-    var hash = 0x73E2
-    var i = 0
-    while (i < callsign.length) {
-        hash = hash xor (callsign[i].code shl 8)
-        i++
-        if (i < callsign.length) {
-            hash = hash xor callsign[i].code
-            i++
-        }
-    }
-    return hash and 0x7FFF
-}
-
 //fun String.getHash(type: String = "SHA-256"): String {
 //    val hexChars = "0123456789ABCDEF"
 //    val bytes = MessageDigest.getInstance(type).digest(this.toByteArray())

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/utility/QthConverter.kt

@@ -19,20 +19,43 @@ package com.rtbishop.look4sat.core.domain.utility
 
 import com.rtbishop.look4sat.core.domain.predict.GeoPos
 
+/**
+ * Convert a Maidenhead locator (4, 6 or 8 chars) to the position of its
+ * square / subsquare / extended-square centre. Longer input is truncated to
+ * 8 chars (the Maidenhead maximum); malformed or out-of-range input yields
+ * null.
+ */
 fun qthToPosition(locator: String): GeoPos? {
-    val trimmedQth = locator.take(6)
-    if (!isValidLocator(trimmedQth)) return null
-    val lonFirst = (trimmedQth[0].uppercaseChar().code - 65) * 20
-    val latFirst = (trimmedQth[1].uppercaseChar().code - 65) * 10
+    val trimmedQth = locator.trim().uppercase().take(8)
+    if (trimmedQth.length !in listOf(4, 6, 8) || !isValidLocator(trimmedQth)) return null
+    val lonFirst = (trimmedQth[0].code - 65) * 20
+    val latFirst = (trimmedQth[1].code - 65) * 10
     val lonSecond = trimmedQth[2].toString().toInt() * 2
     val latSecond = trimmedQth[3].toString().toInt()
-    val lonThird = (((trimmedQth[4].lowercaseChar().code - 97) / 12.0) + (1.0 / 24.0)) - 180
-    val latThird = (((trimmedQth[5].lowercaseChar().code - 97) / 24.0) + (1.0 / 48.0)) - 90
-    val longitude = (lonFirst + lonSecond + lonThird).round(4)
-    val latitude = (latFirst + latSecond + latThird).round(4)
-    return GeoPos(latitude, longitude)
+    // Start from the 4-char square centre, refine for 6/8-char subsquares.
+    var longitude = lonFirst + lonSecond + 1.0
+    var latitude = latFirst + latSecond + 0.5
+    if (trimmedQth.length >= 6) {
+        val lonSub = (trimmedQth[4].code - 65) * 5.0 / 60.0
+        val latSub = (trimmedQth[5].code - 65) * 2.5 / 60.0
+        if (lonSub < 0.0 || lonSub > 115.0 / 60.0 || latSub < 0.0 || latSub > 57.5 / 60.0) return null
+        longitude = lonFirst + lonSecond + lonSub + 2.5 / 60.0
+        latitude = latFirst + latSecond + latSub + 1.25 / 60.0
+        if (trimmedQth.length >= 8) {
+            val lonExt = (trimmedQth[6].code - 48) * 30.0 / 3600.0
+            val latExt = (trimmedQth[7].code - 48) * 15.0 / 3600.0
+            if (lonExt < 0.0 || lonExt > 270.0 / 3600.0 || latExt < 0.0 || latExt > 135.0 / 3600.0) return null
+            longitude += lonExt + 15.0 / 3600.0
+            latitude += latExt + 7.5 / 3600.0
+        }
+    }
+    return GeoPos((latitude - 90.0).round(4), (longitude - 180.0).round(4))
 }
 
+/**
+ * Convert a position to its 6-char Maidenhead locator, upper-cased (field,
+ * square and subsquare letters). Returns null for out-of-range positions.
+ */
 fun positionToQth(latitude: Double, longitude: Double): String? {
     if (!isValidPosition(latitude, longitude)) return null
     val newLongitude = if (longitude > 180.0) longitude else longitude + 180
@@ -41,8 +64,8 @@ fun positionToQth(latitude: Double, longitude: Double): String? {
     val latFirst = (65 + (newLatitude / 10)).toInt().toChar()
     val lonSecond = ((newLongitude / 2) % 10).toInt()
     val latSecond = (newLatitude % 10).toInt()
-    val lonThird = (65 + (newLongitude % 2) * 12).toInt().toChar().lowercaseChar()
-    val latThird = (65 + (newLatitude % 1) * 24).toInt().toChar().lowercaseChar()
+    val lonThird = (65 + (newLongitude % 2) * 12).toInt().toChar().uppercaseChar()
+    val latThird = (65 + (newLatitude % 1) * 24).toInt().toChar().uppercaseChar()
     return "$lonFirst$latFirst$lonSecond$latSecond$lonThird$latThird"
 }
 
@@ -51,5 +74,11 @@ private fun isValidPosition(lat: Double, lon: Double): Boolean {
 }
 
 private fun isValidLocator(locator: String): Boolean {
-    return locator.matches("[a-xA-X][a-xA-X]\\d\\d[a-xA-X][a-xA-X]".toRegex())
+    // 4 chars: [A-X][A-X]\d\d ; 6 chars: + [A-X][A-X] ; 8 chars: + \d\d
+    return when (locator.length) {
+        4 -> Regex("[A-X]{2}\\d{2}").matches(locator)
+        6 -> Regex("[A-X]{2}\\d{2}[A-X]{2}").matches(locator)
+        8 -> Regex("[A-X]{2}\\d{2}[A-X]{2}\\d{2}").matches(locator)
+        else -> false
+    }
 }

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/utility/VersionComparator.kt

@@ -0,0 +1,48 @@
+package com.rtbishop.look4sat.core.domain.utility
+
+/**
+ * Compares two version strings of the form "<major>.<minor>.<patch>[-<build>]" used by the
+ * BA7OPF fork releases (e.g. "4.4.6-ba7opf.6" or "v4.4.6-ba7opf.9.1").
+ *
+ * The comparison is done on the numeric version segments first; when the base versions are
+ * equal, the trailing build numbers of the suffix decide. All numeric segments of the suffix
+ * are compared as a sequence, so multi-level suffixes work correctly:
+ * "4.4.6-ba7opf.9.1" > "4.4.6-ba7opf.9" > "4.4.6-ba7opf.8".
+ */
+object VersionComparator {
+
+    /** True when [candidate] is a newer version than [current]. */
+    fun isNewer(candidate: String, current: String): Boolean {
+        val cand = parse(candidate)
+        val curr = parse(current)
+        val maxLen = maxOf(cand.first.size, curr.first.size)
+        for (i in 0 until maxLen) {
+            val c = cand.first.getOrElse(i) { 0 }
+            val k = curr.first.getOrElse(i) { 0 }
+            if (c != k) return c > k
+        }
+        val maxBuild = maxOf(cand.second.size, curr.second.size)
+        for (i in 0 until maxBuild) {
+            val c = cand.second.getOrElse(i) { 0 }
+            val k = curr.second.getOrElse(i) { 0 }
+            if (c != k) return c > k
+        }
+        return false
+    }
+
+    /**
+     * Parses a version string into (numeric base segments, numeric suffix segments).
+     * "v4.4.6-ba7opf.9.1" -> ([4,4,6], [9,1]); "4.4.6-ba7opf.8" -> ([4,4,6], [8]);
+     * "4.4.6" -> ([4,4,6], []); "4.4.6-ba7opf" -> ([4,4,6], []).
+     */
+    fun parse(version: String): Pair<List<Int>, List<Int>> {
+        val cleaned = version.trim().removePrefix("v")
+        val dashIndex = cleaned.indexOf('-')
+        val basePart = if (dashIndex >= 0) cleaned.substring(0, dashIndex) else cleaned
+        val suffixPart = if (dashIndex >= 0) cleaned.substring(dashIndex + 1) else ""
+        val base = basePart.split('.').mapNotNull { it.toIntOrNull() }
+        // All numeric segments of the suffix, in order (e.g. "ba7opf.9.1" -> [9, 1]).
+        val build = suffixPart.split('.').mapNotNull { it.toIntOrNull() }
+        return base to build
+    }
+}

core/domain/src/test/java/com/rtbishop/look4sat/core/domain/DataParserTest.kt

@@ -18,7 +18,6 @@
 package com.rtbishop.look4sat.core.domain
 
 import com.rtbishop.look4sat.core.domain.utility.DataParser
-import com.rtbishop.look4sat.core.domain.utility.aprsPasscode
 import kotlinx.coroutines.ExperimentalCoroutinesApi
 import kotlinx.coroutines.test.StandardTestDispatcher
 import kotlinx.coroutines.test.runTest
@@ -240,10 +239,4 @@ class DataParserTest {
         // Matches the CSV test data epoch: 2021-11-16 → day 320
         assert(dataParser.getDayOfYear(2021, 11, 16) == 320)
     }
-
-    @Test
-    fun `check APRS passcode calculation`() {
-        assert("M7LNB".aprsPasscode() == 12443)
-        assert("N0CALL".aprsPasscode() == 13023)
-    }
 }

core/domain/src/test/java/com/rtbishop/look4sat/core/domain/DopplerFrequencyCalculatorTest.kt

@@ -3,11 +3,7 @@ package com.rtbishop.look4sat.core.domain
 import com.rtbishop.look4sat.core.domain.model.SatRadio
 import com.rtbishop.look4sat.core.domain.predict.OrbitalPos
 import com.rtbishop.look4sat.core.domain.utility.DopplerFrequencyCalculator
-import org.junit.Assert.assertEquals
-import org.junit.Assert.assertFalse
-import org.junit.Assert.assertNotNull
-import org.junit.Assert.assertNull
-import org.junit.Assert.assertTrue
+import org.junit.Assert.*
 import org.junit.Test
 
 class DopplerFrequencyCalculatorTest {
@@ -166,6 +162,8 @@ class DopplerFrequencyCalculatorTest {
         val orbitalPos = pos(0.0)
         val uplink = DopplerFrequencyCalculator.computeUplinkFromDownlink(435_200_000L, xpdr, orbitalPos)
         assertNotNull(uplink)
+        assertTrue(uplink!! > 0)
+        // With zero Doppler, result equals mapDownlinkToUplink output
         assertEquals(145_200_000L, uplink)
     }
 
@@ -180,23 +178,24 @@ class DopplerFrequencyCalculatorTest {
 
     @Test
     fun computeUplinkFromDownlink_withDoppler_positiveRangeRate() {
-        // Satellite receding (positive range rate) → ground must transmit higher freq to compensate.
+        // Satellite receding (positive range rate) → ground must transmit higher freq to compensate
         val xpdr = linearTransponder()
-        val orbitalPos = pos(7.0)
+        val orbitalPos = pos(7.0)  // ~7 km/s receding
         val uplink = DopplerFrequencyCalculator.computeUplinkFromDownlink(435_200_000L, xpdr, orbitalPos)
         assertNotNull(uplink)
+        // Uplink freq should be Doppler shifted UP (compensating for receding)
         assertTrue(uplink!! > 145_200_000L)
     }
 
     @Test
-    fun computeUplinkFromDownlink_fmTransponder_returnsNull() {
+    fun computeUplinkFromDownlink_fm_transponder_returnsNull() {
         val orbitalPos = pos()
         val result = DopplerFrequencyCalculator.computeUplinkFromDownlink(435_600_000L, fmTransponder(), orbitalPos)
         assertNull(result)
     }
 
     @Test
-    fun computeDownlinkFromUplink_fmTransponder_returnsNull() {
+    fun computeDownlinkFromUplink_fm_transponder_returnsNull() {
         val orbitalPos = pos()
         val result = DopplerFrequencyCalculator.computeDownlinkFromUplink(145_900_000L, fmTransponder(), orbitalPos)
         assertNull(result)
@@ -255,11 +254,13 @@ class DopplerFrequencyCalculatorTest {
         val orbitalPos = pos(0.0)
         val uplink = DopplerFrequencyCalculator.computeUplinkFromDownlink(435_200_000L, xpdr, orbitalPos)
         assertNotNull(uplink)
+        // Inverted: offset from high end → maps to high end of uplink
         assertEquals(145_300_000L, uplink)
     }
 
     @Test
     fun computeUplinkFromDownlink_roundTrip() {
+        // downlink → uplink → downlink should round-trip
         val xpdr = linearTransponder()
         val orbitalPos = pos(3.5)
         val originalDownlink = 435_250_000L
@@ -267,6 +268,7 @@ class DopplerFrequencyCalculatorTest {
         assertNotNull(uplink)
         val roundTripDownlink = DopplerFrequencyCalculator.computeDownlinkFromUplink(uplink!!, xpdr, orbitalPos)
         assertNotNull(roundTripDownlink)
+        // Doppler round-trip: small residual due to freq-dependent Doppler
         val error = kotlin.math.abs(roundTripDownlink!! - originalDownlink)
         assertTrue("Round-trip error too large: $error", error < 10000)
     }

core/domain/src/test/java/com/rtbishop/look4sat/core/domain/QthConverterTest.kt

@@ -1,20 +1,3 @@
-/*
- * Look4Sat. Amateur radio satellite tracker and pass predictor.
- * Copyright (C) 2019-2026 Arty Bishop and contributors.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
 package com.rtbishop.look4sat.core.domain
 
 import com.rtbishop.look4sat.core.domain.utility.positionToQth
@@ -22,25 +5,34 @@ import com.rtbishop.look4sat.core.domain.utility.qthToPosition
 import org.junit.Test
 
 class QthConverterTest {
-
     @Test
     fun `Given valid QTH returns correct POS`() {
+        // 8-char locator -> centre of the extended square (higher precision)
         var result = qthToPosition("io91VL39FX")
-        assert(result?.latitude == 51.4792 && result.longitude == -0.2083)
+        assert(result?.latitude == 51.5188 && result.longitude == -0.1792)
         result = qthToPosition("gf15vc")
         assert(result?.latitude == -34.8958 && result.longitude == -56.2083)
+        // 4-char locator -> centre of the 2deg x 1deg square
+        result = qthToPosition("JN58")
+        assert(result?.latitude == 48.5 && result.longitude == 11.0)
+        // lowercase input is accepted and normalised
+        result = qthToPosition("ol63pd")
+        assert(result?.latitude == 23.1458 && result.longitude == 113.2917)
     }
 
     @Test
     fun `Given invalid QTH returns null`() {
         assert(qthToPosition("ZZ00zz") == null)
-        assert(qthToPosition("JN58") == null)
+        assert(qthToPosition("JN5") == null) // odd length
+        assert(qthToPosition("JN58Z") == null) // 5 chars
+        assert(qthToPosition("JN58ZA") == null) // Z out of A-X range
     }
 
     @Test
     fun `Given valid POS returns correct QTH`() {
-        assert(positionToQth(51.4878, -0.2146) == "IO91vl")
-        assert(positionToQth(48.1466, 11.6083) == "JN58td")
+        assert(positionToQth(51.4878, -0.2146) == "IO91VL")
+        assert(positionToQth(48.1466, 11.6083) == "JN58TD")
+        assert(positionToQth(23.13, 113.26) == "OL63PD")
     }
 
     @Test

core/domain/src/test/java/com/rtbishop/look4sat/core/domain/VersionComparatorTest.kt

@@ -0,0 +1,58 @@
+package com.rtbishop.look4sat.core.domain
+
+import com.rtbishop.look4sat.core.domain.utility.VersionComparator
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertFalse
+import org.junit.Assert.assertTrue
+import org.junit.Test
+
+class VersionComparatorTest {
+
+    @Test
+    fun `newer build number wins when base version equal`() {
+        assertTrue(VersionComparator.isNewer("4.4.6-ba7opf.7", "4.4.6-ba7opf.6"))
+        assertTrue(VersionComparator.isNewer("v4.4.6-ba7opf.6", "4.4.6-ba7opf.5"))
+    }
+
+    @Test
+    fun `newer base version wins regardless of build number`() {
+        assertTrue(VersionComparator.isNewer("4.5.0", "4.4.6-ba7opf.99"))
+        assertTrue(VersionComparator.isNewer("4.4.7-ba7opf.1", "4.4.6-ba7opf.99"))
+    }
+
+    @Test
+    fun `older versions are not newer`() {
+        assertFalse(VersionComparator.isNewer("4.4.6-ba7opf.5", "4.4.6-ba7opf.6"))
+        assertFalse(VersionComparator.isNewer("4.4.5", "4.4.6-ba7opf.1"))
+        assertFalse(VersionComparator.isNewer("4.4.6-ba7opf.6", "4.4.6-ba7opf.6"))
+    }
+
+    @Test
+    fun `v prefix is ignored`() {
+        assertTrue(VersionComparator.isNewer("v4.4.7", "4.4.6"))
+        assertFalse(VersionComparator.isNewer("v4.4.6", "4.4.6-ba7opf.1"))
+    }
+
+    @Test
+    fun `non numeric suffix without number treated as zero build`() {
+        assertTrue(VersionComparator.isNewer("4.4.6-ba7opf.1", "4.4.6-ba7opf"))
+        assertFalse(VersionComparator.isNewer("4.4.6-ba7opf", "4.4.6-ba7opf.1"))
+    }
+
+    @Test
+    fun `multi level suffixes compare correctly`() {
+        // The .9.1 hotfix case that exposed the old single-build-number logic.
+        assertTrue(VersionComparator.isNewer("4.4.6-ba7opf.9.1", "4.4.6-ba7opf.9"))
+        assertTrue(VersionComparator.isNewer("v4.4.6-ba7opf.9.1", "4.4.6-ba7opf.8"))
+        assertFalse(VersionComparator.isNewer("4.4.6-ba7opf.9", "4.4.6-ba7opf.9.1"))
+        assertTrue(VersionComparator.isNewer("4.4.6-ba7opf.10", "4.4.6-ba7opf.9.1"))
+    }
+
+    @Test
+    fun `parse extracts base and suffix segments`() {
+        assertEquals(listOf(4, 4, 6) to listOf(7), VersionComparator.parse("v4.4.6-ba7opf.7"))
+        assertEquals(listOf(4, 4, 6) to listOf(9, 1), VersionComparator.parse("v4.4.6-ba7opf.9.1"))
+        assertEquals(listOf(4, 4, 6) to emptyList<Int>(), VersionComparator.parse("4.4.6"))
+        assertEquals(listOf(4, 4, 6) to emptyList<Int>(), VersionComparator.parse("4.4.6-ba7opf"))
+    }
+}

core/domain/src/test/java/com/rtbishop/look4sat/core/domain/cw/CwDecoderTest.kt

@@ -0,0 +1,301 @@
+/*
+ * Look4Sat. Amateur radio satellite tracker and pass predictor.
+ * Copyright (C) 2019-2026 Arty Bishop and contributors.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package com.rtbishop.look4sat.core.domain.cw
+
+import org.junit.Assert.*
+import org.junit.Test
+import kotlin.math.PI
+import kotlin.math.sin
+
+class CwDecoderTest {
+
+    // --- Morse table ---
+
+    @Test
+    fun morseToChar_basicLetters() {
+        assertEquals('A', CwBayesianDecoder.morseToChar("01"))
+        assertEquals('S', CwBayesianDecoder.morseToChar("000"))
+        assertEquals('O', CwBayesianDecoder.morseToChar("111"))
+    }
+
+    @Test
+    fun morseToChar_numbers() {
+        assertEquals('1', CwBayesianDecoder.morseToChar("01111"))
+        assertEquals('0', CwBayesianDecoder.morseToChar("11111"))
+    }
+
+    @Test
+    fun morseToChar_unknown_returnsNull() {
+        assertNull(CwBayesianDecoder.morseToChar("......."))
+        assertNull(CwBayesianDecoder.morseToChar(""))
+    }
+
+    // --- FFT ---
+
+    @Test
+    fun fft_magnitudeSpectrum_detectsTone() {
+        val fft = CwFFT(256)
+        val sampleRate = 8000f
+        val freq = 700f
+        val buffer = FloatArray(256) { (sin(2.0 * PI * freq * it / sampleRate)).toFloat() }
+        val mag = fft.magnitudeSpectrum(buffer)
+        // Peak should be at bin around 700 * 256 / 8000 ≈ 22.4
+        var maxBin = 0
+        var maxVal = 0f
+        for (i in mag.indices) {
+            if (mag[i] > maxVal) { maxVal = mag[i]; maxBin = i }
+        }
+        assertTrue("Peak bin $maxBin should be near 22", maxBin in 18..26)
+        assertTrue("Peak value $maxVal should be positive", maxVal > 0.01f)
+    }
+
+    @Test
+    fun fft_magnitudeSpectrum_silence_isFlat() {
+        val fft = CwFFT(256)
+        val buffer = FloatArray(256) { 0f }
+        val mag = fft.magnitudeSpectrum(buffer)
+        for (v in mag) assertEquals("Silence spectrum should be 0, got $v", 0f, v, 1e-6f)
+    }
+
+    @Test
+    fun fft_rejectsWrongSize() {
+        assertThrows(IllegalArgumentException::class.java) { CwFFT(100) }
+    }
+
+    // --- Spectrogram ---
+
+    @Test
+    fun spectrogram_addSamples_updatesEnergy() {
+        val spec = CwSpectrogram(sampleRate = 8000)
+        val freq = 700f
+        // Feed multiple frames to stabilize energy normalization
+        for (i in 0..5) {
+            val buffer = FloatArray(256) { (sin(2.0 * PI * freq * it / 8000.0)).toFloat() }
+            spec.addSamples(buffer)
+        }
+        val col = spec.getCurrentColumn()
+        val peakBin = spec.findPeakBin()
+        assertTrue("Peak bin $peakBin should be >= 0", peakBin >= 0)
+    }
+
+    @Test
+    fun spectrogram_findPeakBin_returnsValidBin() {
+        val spec = CwSpectrogram(sampleRate = 8000)
+        // Add multiple frames of 700 Hz tone
+        for (i in 0..5) {
+            val buffer = FloatArray(256) { (sin(2.0 * PI * 700.0 * it / 8000.0)).toFloat() }
+            spec.addSamples(buffer)
+        }
+        val peakBin = spec.findPeakBin()
+        assertTrue("Peak bin should be >= 0, got $peakBin", peakBin >= 0)
+    }
+
+    @Test
+    fun spectrogram_freqToBin_roundtrip() {
+        val spec = CwSpectrogram(sampleRate = 8000)
+        val freq = 700f
+        val bin = spec.freqToBin(freq)
+        val backFreq = spec.binToFreq(bin)
+        assertTrue("Freq $freq → bin $bin → freq $backFreq", backFreq > 600f && backFreq < 800f)
+    }
+
+    @Test
+    fun spectrogram_getBinEnergy_returnsCorrectLength() {
+        val spec = CwSpectrogram(sampleRate = 8000)
+        val energy = spec.getBinEnergy(0, 10)
+        assertEquals(10, energy.size)
+    }
+
+    @Test
+    fun spectrogram_reset() {
+        val spec = CwSpectrogram(sampleRate = 8000)
+        spec.addSamples(FloatArray(256) { 1f })
+        spec.reset()
+        assertEquals(-1, spec.findPeakBin())
+    }
+
+    // --- Bayesian decoder ---
+
+    @Test
+    fun bayesian_processTone_dit() {
+        val decoder = CwBayesianDecoder()
+        // At 20 WPM, dot = 60 ms
+        val result = decoder.processTone(60f)
+        assertEquals('0', result.symbol)
+        assertTrue("Dit probability should be positive", result.probability > 0.1f)
+    }
+
+    @Test
+    fun bayesian_processTone_dash() {
+        val decoder = CwBayesianDecoder()
+        // Dash = 3 * dot = 180 ms
+        val result = decoder.processTone(180f)
+        assertEquals('1', result.symbol)
+        assertTrue("Dash probability should be positive", result.probability > 0.1f)
+    }
+
+    @Test
+    fun bayesian_processTone_unknown_returnsNull() {
+        val decoder = CwBayesianDecoder()
+        // Very long tone — low probability for both dit and dash
+        val result = decoder.processTone(5000f)
+        assertNull(result.symbol)
+    }
+
+    @Test
+    fun bayesian_processGap_interChar_returnsChar() {
+        val decoder = CwBayesianDecoder()
+        decoder.processTone(60f) // dit
+        decoder.processTone(60f) // dit
+        decoder.processTone(60f) // dit
+        // 3 dots = "000" = 'S'
+        val char = decoder.processGap(180f) // 3 * dot = inter-char gap
+        assertEquals('S', char)
+    }
+
+    @Test
+    fun bayesian_processGap_wordGap_addsSpace() {
+        val decoder = CwBayesianDecoder()
+        decoder.processTone(60f) // dit = 'E'
+        decoder.processGap(180f) // inter-char gap
+        // Now word gap
+        val space = decoder.processGap(420f) // 7 * dot
+        assertEquals(' ', space)
+    }
+
+    @Test
+    fun bayesian_decodedText_accumulates() {
+        val decoder = CwBayesianDecoder()
+        decoder.processTone(60f) // dit = 'E'
+        decoder.processGap(180f) // inter-char
+        assertTrue(decoder.decodedText.isNotEmpty())
+    }
+
+    @Test
+    fun bayesian_reset() {
+        val decoder = CwBayesianDecoder()
+        decoder.processTone(60f)
+        decoder.reset()
+        assertEquals("", decoder.decodedText)
+    }
+
+    @Test
+    fun bayesian_getSpeed() {
+        val decoder = CwBayesianDecoder()
+        // Send 3 dits at 20 WPM (60 ms each)
+        decoder.processTone(60f)
+        decoder.processTone(60f)
+        decoder.processTone(60f)
+        val speed = decoder.getSpeed()
+        assertTrue("Speed should be ~20 WPM, got $speed", speed > 15f && speed < 30f)
+    }
+
+    // --- Channel tracker ---
+
+    @Test
+    fun channelTracker_initialState() {
+        val spec = CwSpectrogram(sampleRate = 8000)
+        val tracker = CwChannelTracker(spec)
+        val channels = tracker.update()
+        assertTrue("No channels should be active initially", channels.isEmpty())
+    }
+
+    @Test
+    fun channelTracker_detectsTone() {
+        val spec = CwSpectrogram(sampleRate = 8000)
+        // Feed a tone
+        for (i in 0..5) {
+            spec.addSamples(FloatArray(256) { (sin(2.0 * PI * 700.0 * it / 8000.0)).toFloat() })
+        }
+        val tracker = CwChannelTracker(spec)
+        val channels = tracker.update()
+        assertTrue("Should detect at least 1 channel", channels.isNotEmpty())
+    }
+
+    @Test
+    fun channelTracker_bestChannel() {
+        val spec = CwSpectrogram(sampleRate = 8000)
+        for (i in 0..5) {
+            spec.addSamples(FloatArray(256) { (sin(2.0 * PI * 700.0 * it / 8000.0)).toFloat() })
+        }
+        val tracker = CwChannelTracker(spec)
+        tracker.update()
+        val best = tracker.getBestChannel()
+        assertNotNull("Best channel should exist", best)
+        if (best != null) assertTrue(best.frequency in 600f..800f)
+    }
+
+    @Test
+    fun channelTracker_reset() {
+        val spec = CwSpectrogram(sampleRate = 8000)
+        for (i in 0..5) {
+            spec.addSamples(FloatArray(256) { (sin(2.0 * PI * 700.0 * it / 8000.0)).toFloat() })
+        }
+        val tracker = CwChannelTracker(spec)
+        tracker.update()
+        tracker.reset()
+        assertNull(tracker.getBestChannel())
+    }
+
+    // --- Full decoder ---
+
+    @Test
+    fun decoder_initialState() {
+        val decoder = CwDecoder()
+        assertEquals("", decoder.decodedTextFlow.value)
+        assertEquals(0f, decoder.signalStrength.value, 0.001f)
+    }
+
+    @Test
+    fun decoder_processSilence_doesNotCrash() {
+        val decoder = CwDecoder()
+        decoder.processBuffer(FloatArray(256) { 0f })
+        assertEquals("", decoder.decodedTextFlow.value)
+    }
+
+    @Test
+    fun decoder_processNoise_doesNotCrash() {
+        val decoder = CwDecoder()
+        decoder.processBuffer(FloatArray(256) { (Math.random() * 2 - 1).toFloat() * 0.1f })
+        assertNotNull(decoder.decodedTextFlow.value)
+    }
+
+    @Test
+    fun decoder_processTone_doesNotCrash() {
+        val decoder = CwDecoder()
+        for (i in 0..20) {
+            decoder.processBuffer(FloatArray(256) { (sin(2.0 * PI * 700.0 * it / 8000.0)).toFloat() })
+        }
+        assertNotNull(decoder.decodedTextFlow.value)
+    }
+
+    @Test
+    fun decoder_reset() {
+        val decoder = CwDecoder()
+        decoder.processBuffer(FloatArray(256) { 1f })
+        decoder.resetDecoder()
+        assertEquals("", decoder.decodedTextFlow.value)
+        assertEquals(0f, decoder.signalStrength.value, 0.001f)
+    }
+
+    @Test
+    fun decoder_withFixedPitch() {
+        val decoder = CwDecoder(sampleRate = 8000, cwToneFreq = 700f)
+        assertEquals(700f, decoder.estimatedPitch.value)
+    }
+}

core/domain/src/test/java/com/rtbishop/look4sat/core/domain/model/AwardCalculatorTest.kt

@@ -0,0 +1,155 @@
+/*
+ * Look4Sat. Amateur radio satellite tracker and pass predictor.
+ * Copyright (C) 2019-2026 Arty Bishop and contributors.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package com.rtbishop.look4sat.core.domain.model
+
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertTrue
+import org.junit.Test
+
+class AwardCalculatorTest {
+
+    private fun qso(
+        call: String,
+        dxcc: Int? = null,
+        cqz: Int? = null,
+        state: String? = null,
+        grid: String = "OL62"
+    ) = GridQso(
+        call = call, epochMs = 0L, satName = "SO-50", mode = "FM",
+        bandUp = "70CM", bandDown = "2M", dxcc = dxcc, cqz = cqz, state = state
+    )
+
+    private fun byGrid(vararg qsos: GridQso) =
+        qsos.groupBy { "OL62" } // all share one grid for award-math tests
+
+    @Test
+    fun `vucc counts distinct grid keys`() {
+        val qsos = mapOf(
+            "OL62" to listOf(qso("BG7XYZ")),
+            "PM95" to listOf(qso("JH0ABC")),
+            "OL62" to listOf(qso("BA7AAA"))
+        )
+        // map literal dedupes keys: OL62/PM95 -> 2 grids
+        val progress = AwardCalculator.calculate(qsos).first { it.type == AwardType.VUCC }
+        assertEquals(2, progress.count)
+        assertTrue(progress.workedKeys.containsAll(setOf("OL62", "PM95")))
+    }
+
+    @Test
+    fun `dxcc counts distinct entities from dxcc field`() {
+        val all = listOf(
+            qso("BG7XYZ", dxcc = 318),
+            qso("JH0ABC", dxcc = 339),
+            qso("YD1XYZ", dxcc = 327),
+            qso("BG7ABC", dxcc = 318)
+        )
+        val progress = AwardCalculator.calculate(byGrid(*all.toTypedArray())).first { it.type == AwardType.DXCC }
+        assertEquals(3, progress.count)
+        assertTrue(progress.workedKeys.containsAll(setOf("318", "339", "327")))
+    }
+
+    @Test
+    fun `dxcc falls back to prefix when dxcc missing`() {
+        val all = listOf(qso("JH0ABC"), qso("BG7XYZ"), qso("VR2XYZ"), qso("XX9A"))
+        val progress = AwardCalculator.calculate(byGrid(*all.toTypedArray())).first { it.type == AwardType.DXCC }
+        assertEquals(4, progress.count)
+        assertTrue(progress.workedKeys.containsAll(setOf("339", "318", "321", "152")))
+    }
+
+    @Test
+    fun `wapc counts mainland provinces plus hk mo tw`() {
+        val all = listOf(
+            qso("BG7XYZ", dxcc = 318, state = "GD"),   // Guangdong
+            qso("BD5ABC", dxcc = 318, state = "ZJ"),   // Zhejiang
+            qso("BD5ABC", dxcc = 318, state = "ZJ"),   // dup
+            qso("VR2X", dxcc = 321),                   // Hong Kong
+            qso("XX9A", dxcc = 152),                   // Macao
+            qso("BM4X", dxcc = 386)                    // Taiwan
+        )
+        val progress = AwardCalculator.calculate(byGrid(*all.toTypedArray())).first { it.type == AwardType.WAPC }
+        assertEquals(5, progress.count)
+        assertTrue(progress.workedKeys.containsAll(setOf("GD", "ZJ", "HK", "MO", "TW")))
+    }
+
+    @Test
+    fun `wapc ignores non-china states and missing states`() {
+        val all = listOf(
+            qso("JH0ABC", dxcc = 339, state = "34"),   // Japan state ignored
+            qso("BG7XYZ", dxcc = 318, state = null),   // missing province
+            qso("K1ABC", dxcc = 291, state = "HI")     // Hawaii != Hainan
+        )
+        val progress = AwardCalculator.calculate(byGrid(*all.toTypedArray())).first { it.type == AwardType.WAPC }
+        assertEquals(0, progress.count)
+        assertTrue(progress.workedKeys.isEmpty())
+    }
+
+    @Test
+    fun `waja counts japanese prefectures only`() {
+        val all = listOf(
+            qso("JH0ABC", dxcc = 339, state = "10"),   // Tokyo
+            qso("JH0ABC", dxcc = 339, state = "47"),   // Okinawa
+            qso("JH0ABC", dxcc = 339, state = "10"),   // dup
+            qso("BG7XYZ", dxcc = 318, state = "10"),   // Chinese call, state=10 must NOT count
+            qso("JE2XYZ", dxcc = 339, state = null)    // missing
+        )
+        val progress = AwardCalculator.calculate(byGrid(*all.toTypedArray())).first { it.type == AwardType.WAJA }
+        assertEquals(2, progress.count)
+        assertTrue(progress.workedKeys.containsAll(setOf("10", "47")))
+    }
+
+    @Test
+    fun `waz counts distinct cq zones in range`() {
+        val all = listOf(
+            qso("BG7XYZ", cqz = 24),
+            qso("JH0ABC", cqz = 25),
+            qso("YD1XYZ", cqz = 28),
+            qso("BG7AAA", cqz = 24),
+            qso("BG7BBB", cqz = null),
+            qso("BG7CCC", cqz = 0)
+        )
+        val progress = AwardCalculator.calculate(byGrid(*all.toTypedArray())).first { it.type == AwardType.WAZ }
+        assertEquals(3, progress.count)
+        assertTrue(progress.workedKeys.containsAll(setOf("24", "25", "28")))
+    }
+
+    @Test
+    fun `was counts us states only`() {
+        val all = listOf(
+            qso("K1ABC", dxcc = 291, state = "CA"),
+            qso("W2XYZ", dxcc = 291, state = "NY"),
+            qso("N3QRS", dxcc = 291, state = "ca"),    // lowercase normalized
+            qso("BG7XYZ", dxcc = 318, state = "CA"),   // not US
+            qso("K1AAA", dxcc = 291, state = "XX")     // invalid state
+        )
+        val progress = AwardCalculator.calculate(byGrid(*all.toTypedArray())).first { it.type == AwardType.WAS }
+        assertEquals(2, progress.count)
+        assertTrue(progress.workedKeys.containsAll(setOf("CA", "NY")))
+    }
+
+    @Test
+    fun `all six awards present with correct targets`() {
+        val progress = AwardCalculator.calculate(emptyMap())
+        assertEquals(6, progress.size)
+        assertEquals(100, progress.first { it.type == AwardType.DXCC }.target)
+        assertEquals(100, progress.first { it.type == AwardType.VUCC }.target)
+        assertEquals(34, progress.first { it.type == AwardType.WAPC }.target)
+        assertEquals(47, progress.first { it.type == AwardType.WAJA }.target)
+        assertEquals(40, progress.first { it.type == AwardType.WAZ }.target)
+        assertEquals(50, progress.first { it.type == AwardType.WAS }.target)
+    }
+}

core/domain/src/test/java/com/rtbishop/look4sat/core/domain/repository/LoTWGridSyncTest.kt

@@ -0,0 +1,290 @@
+/*
+ * Look4Sat. Amateur radio satellite tracker and pass predictor.
+ * Copyright (C) 2019-2026 Arty Bishop and contributors.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package com.rtbishop.look4sat.core.domain.repository
+
+import com.rtbishop.look4sat.core.domain.model.DatabaseState
+import com.rtbishop.look4sat.core.domain.model.DataSourcesSettings
+import com.rtbishop.look4sat.core.domain.model.GridQso
+import com.rtbishop.look4sat.core.domain.model.LoTWSettings
+import com.rtbishop.look4sat.core.domain.model.OtherSettings
+import com.rtbishop.look4sat.core.domain.model.PassesSettings
+import com.rtbishop.look4sat.core.domain.model.RCSettings
+import com.rtbishop.look4sat.core.domain.model.RadioControlSettings
+import com.rtbishop.look4sat.core.domain.model.WavelogSettings
+import com.rtbishop.look4sat.core.domain.predict.GeoPos
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.runBlocking
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertFalse
+import org.junit.Assert.assertTrue
+import org.junit.Test
+
+class LoTWGridSyncTest {
+
+    // 2026-09-16T00:00:00Z — fixed "now" for the cursor assertions.
+    private val now = 1_789_516_800_000L
+
+    // region resolveLoTWSyncMode
+
+    @Test
+    fun resolveModeHonorsExplicitFull() {
+        assertEquals(LoTWSyncMode.Full, resolveLoTWSyncMode("BA7OPF", "BA7OPF", LoTWSyncMode.Full))
+        assertEquals(LoTWSyncMode.Full, resolveLoTWSyncMode("", "BA7OPF", LoTWSyncMode.Full))
+    }
+
+    @Test
+    fun resolveModeAllowsIncrementalOnlyForSameCallsign() {
+        assertEquals(
+            LoTWSyncMode.Incremental,
+            resolveLoTWSyncMode("BA7OPF", "BA7OPF", LoTWSyncMode.Incremental)
+        )
+        assertEquals(
+            LoTWSyncMode.Full,
+            resolveLoTWSyncMode("BG7ABC", "BA7OPF", LoTWSyncMode.Incremental)
+        )
+        assertEquals(
+            LoTWSyncMode.Full,
+            resolveLoTWSyncMode("", "BA7OPF", LoTWSyncMode.Incremental)
+        )
+    }
+
+    @Test
+    fun resolveModeForAutoSyncPicksIncrementalWhenPossible() {
+        assertEquals(LoTWSyncMode.Incremental, resolveLoTWSyncMode("BA7OPF", "BA7OPF", null))
+        assertEquals(LoTWSyncMode.Full, resolveLoTWSyncMode("BG7ABC", "BA7OPF", null))
+        assertEquals(LoTWSyncMode.Full, resolveLoTWSyncMode("", "BA7OPF", null))
+    }
+
+    // endregion
+
+    // region shouldAutoSyncLoTW
+
+    @Test
+    fun autoSyncGateRequiresEverything() {
+        val today = "20260916"
+        // Not configured.
+        assertFalse(shouldAutoSyncLoTW(false, true, "2026-09-15 10:00:00", today))
+        // LoTW auto-sync toggle off.
+        assertFalse(shouldAutoSyncLoTW(true, false, "2026-09-15 10:00:00", today))
+        // Never synced manually — first sync stays manual/full.
+        assertFalse(shouldAutoSyncLoTW(true, true, "", today))
+        // Already synced today (both legacy and current cursor formats) — ARRL rate-limit guard.
+        assertFalse(shouldAutoSyncLoTW(true, true, "20260916", today))
+        assertFalse(shouldAutoSyncLoTW(true, true, "2026-09-16 08:00:00", today))
+        // All gates open — yesterday in either format.
+        assertTrue(shouldAutoSyncLoTW(true, true, "20260915", today))
+        assertTrue(shouldAutoSyncLoTW(true, true, "2026-09-15 10:00:00", today))
+    }
+
+    // endregion
+
+    // region cursor helpers
+
+    @Test
+    fun cursorApiNormalizesLegacyAndPassesFullThrough() {
+        assertEquals("2026-09-16", lotwCursorApi("20260916"))
+        assertEquals("2026-09-16 08:16:02", lotwCursorApi("2026-09-16 08:16:02"))
+        assertEquals("", lotwCursorApi(""))
+    }
+
+    @Test
+    fun cursorDateToleratesBothFormats() {
+        assertEquals("20260916", lotwCursorDate("20260916"))
+        assertEquals("20260916", lotwCursorDate("2026-09-16 08:16:02"))
+        assertEquals("", lotwCursorDate(""))
+    }
+
+    @Test
+    fun cursorEpochMsParsesBothFormatsUtc() {
+        // 2026-09-16T00:00:00Z in both spellings.
+        assertEquals(now, lotwCursorEpochMs("20260916"))
+        assertEquals(now, lotwCursorEpochMs("2026-09-16 00:00:00"))
+        assertEquals(0L, lotwCursorEpochMs(""))
+        assertEquals(0L, lotwCursorEpochMs("garbage"))
+    }
+
+    // endregion
+
+    // region mergeGridQsos
+
+    @Test
+    fun mergeGridQsosDedupsByCallAndTime() {
+        val existing = mapOf(
+            "OL62" to listOf(qso("BA7ABC", 1000L)),
+            "OL63" to listOf(qso("BA7DEF", 2000L))
+        )
+        val fresh = mapOf(
+            // Same grid, same QSO re-delivered by an overlapping since-date.
+            "OL62" to listOf(qso("BA7ABC", 1000L)),
+            // Same grid, brand-new QSO.
+            "OL62" to listOf(qso("BA7GHI", 3000L)),
+            // New grid entirely.
+            "PM95" to listOf(qso("BA7JKL", 4000L))
+        )
+        val merged = mergeGridQsos(existing, fresh)
+        assertEquals(setOf("OL62", "OL63", "PM95"), merged.keys)
+        assertEquals(2, merged["OL62"]?.size) // BA7ABC once, BA7GHI added
+        assertEquals(1, merged["OL63"]?.size)
+        assertEquals(1, merged["PM95"]?.size)
+    }
+
+    @Test
+    fun mergeGridQsosHandlesEmptySides() {
+        val fresh = mapOf("OL62" to listOf(qso("BA7ABC", 1000L)))
+        assertEquals(fresh, mergeGridQsos(emptyMap(), fresh))
+        // An empty incremental pull must leave the stored side untouched.
+        assertEquals(fresh, mergeGridQsos(fresh, emptyMap()))
+        assertEquals(emptyMap<String, List<GridQso>>(), mergeGridQsos(emptyMap(), emptyMap()))
+    }
+
+    // endregion
+
+    // region applyLoTWGridResult
+
+    @Test
+    fun applyIncrementalMergesAndAdvancesCursor() = runBlocking {
+        val repo = FakeSettingsRepo().apply {
+            setWorkedGrids(setOf("OL62"))
+            setWorkedGridQsos(mapOf("OL62" to listOf(qso("BA7ABC", 1000L))))
+            setRoamedGrids(setOf("OL62"))
+            setLastLotwSyncDate("20260915")
+            setLastLotwSyncCallsign("BA7OPF")
+        }
+        val result = LoTWResult.Success(
+            grids = setOf("OL62", "PM95"),
+            qsos = mapOf("OL62" to listOf(qso("BA7ABC", 1000L)), "PM95" to listOf(qso("BA7GHI", 2000L))),
+            roamedGrids = setOf("PM95")
+        )
+        val count = applyLoTWGridResult(repo, result, LoTWSyncMode.Incremental, "BA7OPF", now)
+
+        assertEquals(2, count)
+        assertEquals(setOf("OL62", "PM95"), repo.getWorkedGrids())
+        assertEquals(1, repo.getWorkedGridQsos()["OL62"]?.size) // deduped
+        assertEquals(setOf("OL62", "PM95"), repo.getRoamedGrids())
+        assertEquals("2026-09-16 00:00:00", repo.getLastLotwSyncDate())
+        assertEquals("BA7OPF", repo.getLastLotwSyncCallsign())
+    }
+
+    @Test
+    fun applyFullReplacesEverythingAndAdvancesCursor() = runBlocking {
+        val repo = FakeSettingsRepo().apply {
+            setWorkedGrids(setOf("OL62", "STALE"))
+            setWorkedGridQsos(mapOf("STALE" to listOf(qso("BG7OLD", 1L))))
+            setRoamedGrids(setOf("STALE"))
+            setLastLotwSyncDate("20260910")
+            setLastLotwSyncCallsign("BG7OLD")
+        }
+        val result = LoTWResult.Success(
+            grids = setOf("PM95"),
+            qsos = mapOf("PM95" to listOf(qso("BA7GHI", 2000L))),
+            roamedGrids = setOf("PM95")
+        )
+        val count = applyLoTWGridResult(repo, result, LoTWSyncMode.Full, "BA7OPF", now)
+
+        assertEquals(1, count)
+        assertEquals(setOf("PM95"), repo.getWorkedGrids())
+        assertEquals(setOf("PM95"), repo.getWorkedGridQsos().keys)
+        assertEquals(setOf("PM95"), repo.getRoamedGrids())
+        assertEquals("2026-09-16 00:00:00", repo.getLastLotwSyncDate())
+        assertEquals("BA7OPF", repo.getLastLotwSyncCallsign())
+    }
+
+    // endregion
+
+    private fun qso(call: String, epochMs: Long): GridQso =
+        GridQso(call, epochMs, "FO-29", "FM", "70CM", "2M")
+
+    /**
+     * Minimal ISettingsRepo fake backing only the LoTW sync surface; the rest
+     * throws (mirrors the FakeSettingsRepo pattern used in feature tests).
+     */
+    private class FakeSettingsRepo : ISettingsRepo {
+        override val stationPosition: StateFlow<GeoPos> = MutableStateFlow(GeoPos(23.13, 113.26))
+        override val appVersionName: String = "test"
+        override val selectedIds: StateFlow<List<Int>> = MutableStateFlow(emptyList())
+        override val selectedTypes: StateFlow<List<String>> = MutableStateFlow(emptyList())
+        override val passesSettings: StateFlow<PassesSettings> = MutableStateFlow(
+            PassesSettings(hoursAhead = 24, minElevation = 10.0, selectedModes = emptyList())
+        )
+        override val databaseState: StateFlow<DatabaseState> = MutableStateFlow(DatabaseState(0, 0, 0L))
+        override val rcSettings: StateFlow<RCSettings> = MutableStateFlow(
+            RCSettings(false, "", "", "", false, "", "", "", 0L, false, "", "", "", false, "", "")
+        )
+        override val otherSettings: StateFlow<OtherSettings> = MutableStateFlow(
+            OtherSettings(
+                stateOfAutoUpdate = true,
+                stateOfSensors = false,
+                stateOfSweep = false,
+                stateOfUtc = false,
+                stateOfLightTheme = false,
+                stateOfNightMode = false,
+                stateOfMapGrid = false,
+                shouldSeeWarning = false,
+                shouldSeeWhatsNew = false
+            )
+        )
+        override val dataSourcesSettings: StateFlow<DataSourcesSettings> = MutableStateFlow(
+            DataSourcesSettings(satelliteUrls = emptyList(), transceiversUrls = emptyList())
+        )
+        override val dataSourcesStatus: StateFlow<Map<String, Int>> = MutableStateFlow(emptyMap())
+        override val radioControlSettings: StateFlow<RadioControlSettings> = MutableStateFlow(
+            RadioControlSettings(false, RadioControlSettings.MODEL_YAESU_FT817, "", "", "", "", 9600)
+        )
+        override val wavelogSettings: StateFlow<WavelogSettings> = MutableStateFlow(WavelogSettings())
+        override val lotwSettings: StateFlow<LoTWSettings> = MutableStateFlow(LoTWSettings())
+
+        private var workedGrids: Set<String> = emptySet()
+        private var workedGridQsos: Map<String, List<GridQso>> = emptyMap()
+        private var roamedGrids: Set<String> = emptySet()
+        private var lastSyncDate: String = ""
+        private var lastSyncCallsign: String = ""
+
+        override fun getWorkedGrids(): Set<String> = workedGrids
+        override fun setWorkedGrids(grids: Set<String>) { workedGrids = grids }
+        override fun getWorkedGridQsos(): Map<String, List<GridQso>> = workedGridQsos
+        override fun setWorkedGridQsos(qsos: Map<String, List<GridQso>>) { workedGridQsos = qsos }
+        override fun getRoamedGrids(): Set<String> = roamedGrids
+        override fun setRoamedGrids(grids: Set<String>) { roamedGrids = grids }
+        override fun getLastLotwSyncDate(): String = lastSyncDate
+        override fun setLastLotwSyncDate(date: String) { lastSyncDate = date }
+        override fun getLastLotwSyncCallsign(): String = lastSyncCallsign
+        override fun setLastLotwSyncCallsign(callsign: String) { lastSyncCallsign = callsign }
+
+        override fun setSelectedIds(ids: List<Int>) = TODO()
+        override fun setSelectedTypes(types: List<String>) = TODO()
+        override fun setPassesSettings(settings: PassesSettings) = TODO()
+        override fun setStationPosition(latitude: Double, longitude: Double, altitude: Double): Boolean = TODO()
+        override fun setStationPosition(): Boolean = TODO()
+        override fun setStationPosition(locator: String): Boolean = TODO()
+        override fun getSatelliteTypesIds(types: List<String>): List<Int> = TODO()
+        override fun setSatelliteTypeIds(type: String, ids: List<Int>) = TODO()
+        override fun updateDatabaseState(state: DatabaseState) = TODO()
+        override fun updateRCSettings(settings: RCSettings) = TODO()
+        override fun updateOtherSettings(transform: (OtherSettings) -> OtherSettings) = TODO()
+        override fun updateDataSourcesSettings(settings: DataSourcesSettings) = TODO()
+        override fun updateDataSourcesStatus(status: Map<String, Int>) = TODO()
+        override fun updateRadioControlSettings(settings: RadioControlSettings) = TODO()
+        override fun getSatelliteOffset(catnum: Int): String = ""
+        override fun setSatelliteOffset(catnum: Int, offset: String) = TODO()
+        override fun getAmSatCallsign(): String = ""
+        override fun setAmSatCallsign(callsign: String) = TODO()
+        override fun updateWavelogSettings(settings: WavelogSettings) = TODO()
+        override fun updateLoTWSettings(settings: LoTWSettings) = TODO()
+    }
+}

core/presentation/src/main/java/com/rtbishop/look4sat/core/presentation/Components.kt

@@ -27,18 +27,13 @@ import androidx.compose.foundation.layout.PaddingValues
 import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.RowScope
 import androidx.compose.foundation.layout.Spacer
-import androidx.compose.foundation.layout.WindowInsets
-import androidx.compose.foundation.layout.asPaddingValues
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.height
-import androidx.compose.foundation.layout.heightIn
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
-import androidx.compose.foundation.layout.statusBars
 import androidx.compose.foundation.layout.statusBarsPadding
 import androidx.compose.foundation.layout.width
-import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.material3.ButtonDefaults
 import androidx.compose.material3.CardDefaults
 import androidx.compose.material3.CircularProgressIndicator
@@ -76,8 +71,6 @@ import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.text.style.TextDecoration
 import androidx.compose.ui.text.style.TextOverflow
-import androidx.compose.ui.platform.LocalDensity
-import androidx.compose.ui.platform.LocalWindowInfo
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.Dp
 import androidx.compose.ui.unit.TextUnit
@@ -150,7 +143,7 @@ fun RowScope.NextPassRow(pass: OrbitalPass, modifier: Modifier = Modifier, isUtc
         if (isUtc) TimeZone.getTimeZone("UTC") else TimeZone.getDefault()
     }
     val sdfTime = remember(isUtc) {
-        SimpleDateFormat("HH:mm:ss", displayLocale()).also { it.timeZone = timeZone }
+        SimpleDateFormat("HH:mm:ss", Locale.ENGLISH).also { it.timeZone = timeZone }
     }
     ElevatedCard(
         modifier = modifier
@@ -164,16 +157,13 @@ fun RowScope.NextPassRow(pass: OrbitalPass, modifier: Modifier = Modifier, isUtc
                 .padding(start = 6.dp, top = 1.dp, end = 6.dp, bottom = 0.dp)
         ) {
             Row(verticalAlignment = Alignment.CenterVertically) {
-                Text(
-                    text = "${stringResource(R.string.pass_satId, pass.catNum)} - ",
-                    color = MaterialTheme.colorScheme.primary
-                )
                 Text(
                     text = pass.name,
                     modifier = Modifier
                         .weight(1f)
                         .padding(end = 6.dp)
                         .infiniteMarquee(),
+                    color = MaterialTheme.colorScheme.primary,
                     fontWeight = FontWeight.Medium,
                     maxLines = 1,
                     overflow = TextOverflow.Ellipsis
@@ -219,18 +209,21 @@ fun RowScope.NextPassRow(pass: OrbitalPass, modifier: Modifier = Modifier, isUtc
     }
 }
 
-private fun displayLocale(): Locale {
-    val locale = Locale.getDefault()
-    return if (locale.language == Locale.CHINESE.language) locale else Locale.ENGLISH
-}
-
 @Composable
-fun CardButton(onClick: () -> Unit, text: String, modifier: Modifier = Modifier) {
+fun CardButton(
+    onClick: () -> Unit,
+    text: String,
+    modifier: Modifier = Modifier,
+    isEnabled: Boolean = true
+) {
     ElevatedButton(
         onClick = onClick,
+        enabled = isEnabled,
         colors = ButtonDefaults.buttonColors(
             containerColor = MaterialTheme.colorScheme.surfaceVariant,
-            contentColor = MaterialTheme.colorScheme.onSurfaceVariant
+            contentColor = MaterialTheme.colorScheme.onSurfaceVariant,
+            disabledContainerColor = MaterialTheme.colorScheme.surfaceVariant,
+            disabledContentColor = MaterialTheme.colorScheme.onSurfaceVariant.copy(alpha = 0.4f)
         ),
         shape = MaterialTheme.shapes.small,
         modifier = modifier,
@@ -239,13 +232,8 @@ fun CardButton(onClick: () -> Unit, text: String, modifier: Modifier = Modifier)
 }
 
 @Composable
-fun IconCard(
-    action: () -> Unit, resId: Int, modifier: Modifier = Modifier,
-    enabled: Boolean = true, containerColor: Color = Color.Unspecified
-) {
-    val colors = if (containerColor == Color.Unspecified) CardDefaults.elevatedCardColors()
-    else CardDefaults.elevatedCardColors(containerColor = containerColor)
-    ElevatedCard(modifier = Modifier.size(48.dp), enabled = enabled, onClick = action, colors = colors) {
+fun IconCard(action: () -> Unit, resId: Int, modifier: Modifier = Modifier, enabled: Boolean = true) {
+    ElevatedCard(modifier = Modifier.size(48.dp), enabled = enabled, onClick = action) {
         Box(modifier = Modifier.fillMaxSize(), contentAlignment = Alignment.Center) {
             Icon(painter = painterResource(resId), contentDescription = null, modifier = modifier)
         }
@@ -305,6 +293,7 @@ fun InfoDialog(
     title: String,
     onDismiss: () -> Unit,
     onAccept: () -> Unit,
+    extraAction: (@Composable () -> Unit)? = null,
     content: @Composable () -> Unit
 ) {
     DialogShell(onDismissRequest = onDismiss) { padding ->
@@ -323,6 +312,10 @@ fun InfoDialog(
                 overflow = TextOverflow.Ellipsis,
                 modifier = Modifier.weight(1f)
             )
+            extraAction?.let {
+                it()
+                Spacer(modifier = Modifier.width(8.dp))
+            }
             CardButton(onClick = onAccept, text = stringResource(R.string.btn_accept))
         }
         content()
@@ -330,52 +323,72 @@ fun InfoDialog(
 }
 
 @Composable
-fun ConfirmDialog(
+fun SharedDialog(
     title: String,
     onCancel: () -> Unit,
     onAccept: () -> Unit,
+    acceptText: String? = null,
+    acceptEnabled: Boolean = true,
     content: @Composable () -> Unit
 ) {
-    DialogShell(onDismissRequest = onCancel) { padding ->
+    SharedDialog(
+        title = title,
+        onDismissRequest = onCancel,
+        onCancel = onCancel,
+        onAccept = onAccept,
+        acceptText = acceptText,
+        acceptEnabled = acceptEnabled
+    ) { _ ->
+        content()
+    }
+}
+
+@Composable
+fun SharedDialog(
+    title: String,
+    onDismissRequest: () -> Unit,
+    onCancel: (() -> Unit)? = null,
+    onAccept: (() -> Unit)? = null,
+    acceptText: String? = null,
+    acceptEnabled: Boolean = true,
+    titleFontSize: Int = 16,
+    titleTextAlign: TextAlign = if (onCancel != null && onAccept != null) TextAlign.Center else TextAlign.Start,
+    content: @Composable (padding: Dp) -> Unit
+) {
+    DialogShell(onDismissRequest = onDismissRequest) { padding ->
         Row(
             verticalAlignment = Alignment.CenterVertically,
             modifier = Modifier
                 .fillMaxWidth()
                 .padding(start = padding, top = padding, end = padding)
         ) {
-            CardButton(onClick = onCancel, text = stringResource(R.string.btn_cancel))
+            if (onCancel != null) {
+                CardButton(onClick = onCancel, text = stringResource(R.string.btn_cancel))
+            }
             Text(
                 text = title,
-                fontSize = 16.sp,
+                fontSize = titleFontSize.sp,
                 fontWeight = FontWeight.Medium,
                 color = MaterialTheme.colorScheme.primary,
-                textAlign = TextAlign.Center,
+                textAlign = titleTextAlign,
                 maxLines = 1,
                 overflow = TextOverflow.Ellipsis,
                 modifier = Modifier
                     .weight(1f)
-                    .padding(horizontal = padding)
+                    .padding(
+                        start = if (onCancel != null) padding else 0.dp,
+                        end = if (onAccept != null) padding else 0.dp
+                    )
             )
-            CardButton(onClick = onAccept, text = stringResource(R.string.btn_accept))
+            if (onAccept != null) {
+                CardButton(
+                    onClick = onAccept,
+                    text = acceptText ?: stringResource(R.string.btn_accept),
+                    isEnabled = acceptEnabled
+                )
+            }
         }
-        content()
-    }
-}
-
-@Composable
-fun WhatsNewDialog(onDismiss: () -> Unit) {
-    InfoDialog(
-        title = stringResource(R.string.pass_whatsnew_title),
-        onDismiss = onDismiss,
-        onAccept = onDismiss
-    ) {
-        Text(
-            text = stringResource(R.string.pass_whatsnew_message),
-            fontSize = 16.sp,
-            color = MaterialTheme.colorScheme.onSurface,
-            modifier = Modifier.padding(horizontal = LocalSpacing.current.large)
-        )
-        Spacer(modifier = Modifier.height(0.dp))
+        content(padding)
     }
 }
 
@@ -387,9 +400,6 @@ private fun DialogShell(
 ) {
     val padding = LocalSpacing.current.large
     val sheetState = rememberModalBottomSheetState(skipPartiallyExpanded = true)
-    val statusBarHeight = WindowInsets.statusBars.asPaddingValues().calculateTopPadding()
-    val containerHeight = with(LocalDensity.current) { LocalWindowInfo.current.containerSize.height.toDp() }
-    val maxSheetHeight = containerHeight - statusBarHeight
     val stopSheetFling = remember {
         object : NestedScrollConnection {
             override suspend fun onPostFling(consumed: Velocity, available: Velocity): Velocity {
@@ -407,7 +417,7 @@ private fun DialogShell(
         onDismissRequest = onDismissRequest,
         sheetState = sheetState,
         dragHandle = null,
-        shape = RoundedCornerShape(topStart = 12.dp, topEnd = 12.dp),
+        shape = MaterialTheme.shapes.medium,
         scrimColor = Color.Black.copy(alpha = 0.64f)
     ) {
         Column(
@@ -415,7 +425,6 @@ private fun DialogShell(
             verticalArrangement = Arrangement.spacedBy(padding),
             modifier = Modifier
                 .fillMaxWidth()
-                .heightIn(max = maxSheetHeight)
                 .nestedScroll(stopSheetFling)
         ) {
             content(padding)

core/presentation/src/main/java/com/rtbishop/look4sat/core/presentation/GridTargetChip.kt

@@ -0,0 +1,142 @@
+package com.rtbishop.look4sat.core.presentation
+
+import androidx.compose.foundation.Canvas
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.geometry.Offset
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.Path
+import androidx.compose.ui.graphics.drawscope.Stroke
+import androidx.compose.ui.graphics.drawscope.rotate
+import androidx.compose.ui.text.font.FontFamily
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import kotlin.math.atan2
+import kotlin.math.cos
+import kotlin.math.sin
+import kotlin.math.sqrt
+
+/**
+ * Format a Maidenhead locator for display. Per IARU convention and the user's
+ * preference: field letters (1-2) and square digits (3-4) uppercase, sub-square
+ * letters (5-6 of a 6/8-char locator) lowercase, e.g. "OL62" / "OL62kl".
+ */
+fun formatGridDisplay(grid: String): String? {
+    val g = grid.trim().uppercase()
+    if (g.length !in listOf(4, 6, 8) || g.any { !it.isLetterOrDigit() }) return null
+    if (g.length == 4) return g
+    if (g.length == 6) return g.take(4) + g.drop(4).lowercase()
+    return g.take(4) + g.drop(4).take(2).lowercase() + g.drop(6)
+}
+
+/**
+ * Top-bar chip for the mutual-match screen: navigation needle (rotated by the
+ * great-circle bearing to the target grid, 0 deg = north), grid locator and
+ * distance. Shows a dimmed placeholder when no target grid is entered.
+ */
+@Composable
+fun GridTargetChip(
+    grid: String?,
+    distanceKm: Double?,
+    bearingDeg: Double?,
+    modifier: Modifier = Modifier
+) {
+    val configured = grid != null && distanceKm != null && bearingDeg != null
+    // The app's signature accent yellow (MaterialTheme primary in both themes).
+    val accent = MaterialTheme.colorScheme.primary
+    val placeholder = MaterialTheme.colorScheme.onSurfaceVariant
+    Row(
+        verticalAlignment = Alignment.CenterVertically,
+        horizontalArrangement = Arrangement.spacedBy(8.dp),
+        modifier = modifier
+            .height(36.dp)
+            .background(
+                color = MaterialTheme.colorScheme.surface.copy(alpha = if (configured) 0.9f else 0.45f),
+                shape = RoundedCornerShape(12.dp)
+            )
+            .padding(horizontal = 12.dp)
+    ) {
+        NavigationNeedle(
+            bearingDeg = bearingDeg ?: 0.0,
+            color = if (configured) accent else placeholder,
+            dimmed = !configured,
+            modifier = Modifier.size(22.dp)
+        )
+        Text(
+            text = grid?.let { formatGridDisplay(it) } ?: "----",
+            fontSize = 15.sp,
+            fontWeight = FontWeight.Bold,
+            fontFamily = FontFamily.Monospace,
+            color = if (configured) accent else placeholder,
+            letterSpacing = 1.sp
+        )
+        Text(
+            text = distanceKm?.let { "${"%,.0f".format(it)} km" } ?: "-- km",
+            fontSize = 14.sp,
+            color = MaterialTheme.colorScheme.onSurface,
+            modifier = Modifier.padding(horizontal = 8.dp, vertical = 2.dp)
+        )
+    }
+}
+
+/**
+ * Map-style navigation needle: slim triangular pointer whose tip points at
+ * [bearingDeg] (0 = north/up, clockwise positive).
+ */
+@Composable
+private fun NavigationNeedle(
+    bearingDeg: Double,
+    color: Color,
+    dimmed: Boolean,
+    modifier: Modifier = Modifier
+) {
+    Canvas(modifier = modifier) {
+        val cx = size.width / 2f
+        val cy = size.height / 2f
+        val r = size.minDimension / 2f
+        if (dimmed) {
+            drawCircle(color = color, radius = r * 0.92f, style = Stroke(width = 1.5f))
+        }
+        rotate(degrees = bearingDeg.toFloat(), pivot = Offset(cx, cy)) {
+            val path = Path().apply {
+                moveTo(cx, cy - r * 0.9f)          // tip (north before rotation)
+                lineTo(cx - r * 0.42f, cy + r * 0.55f)
+                lineTo(cx, cy + r * 0.28f)
+                lineTo(cx + r * 0.42f, cy + r * 0.55f)
+                close()
+            }
+            drawPath(path, color = color)
+        }
+    }
+}
+
+/** Great-circle distance in km between two positions. */
+fun greatCircleDistanceKm(lat1: Double, lon1: Double, lat2: Double, lon2: Double): Double {
+    val rad = Math.PI / 180.0
+    val dLat = (lat2 - lat1) * rad
+    val dLon = (lon2 - lon1) * rad
+    val a = sin(dLat / 2) * sin(dLat / 2) +
+        cos(lat1 * rad) * cos(lat2 * rad) * sin(dLon / 2) * sin(dLon / 2)
+    return 6371.0 * 2 * kotlin.math.atan2(kotlin.math.sqrt(a), kotlin.math.sqrt(1 - a))
+}
+
+/** Initial great-circle bearing in degrees (0 = north, clockwise). */
+fun greatCircleBearingDeg(lat1: Double, lon1: Double, lat2: Double, lon2: Double): Double {
+    val rad = Math.PI / 180.0
+    val dLon = (lon2 - lon1) * rad
+    val y = sin(dLon) * cos(lat2 * rad)
+    val x = cos(lat1 * rad) * sin(lat2 * rad) -
+        sin(lat1 * rad) * cos(lat2 * rad) * cos(dLon)
+    return (Math.atan2(y, x) / rad + 360.0) % 360.0
+}

core/presentation/src/main/java/com/rtbishop/look4sat/core/presentation/Navigation.kt

@@ -24,16 +24,19 @@ import kotlinx.serialization.Serializable
 sealed class Screen(val iconResId: Int, val titleResId: Int) : NavKey {
 
     @Serializable
-    data object Satellites : Screen(R.drawable.ic_sputnik, R.string.nav_sat)
+    data object Satellites : Screen(R.drawable.ic_satellites, R.string.nav_sat)
 
     @Serializable
     data object Passes : Screen(R.drawable.ic_passes, R.string.nav_pass)
 
     @Serializable
-    data object Status : Screen(R.drawable.ic_satellite, R.string.nav_status)
+    data object Map : Screen(R.drawable.ic_map, R.string.nav_map)
 
     @Serializable
-    data object Map : Screen(R.drawable.ic_map, R.string.nav_map)
+    data object Mutual : Screen(R.drawable.ic_radio_tower, R.string.nav_mutual)
+
+    @Serializable
+    data object AMSAT : Screen(R.drawable.ic_satellite_alt, R.string.nav_amsat)
 
     @Serializable
     data object Settings : Screen(R.drawable.ic_settings, R.string.nav_prefs)

core/presentation/src/main/res/drawable/ic_add.xml

@@ -1,9 +1,3 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="24dp"
-    android:height="24dp"
-    android:viewportWidth="960"
-    android:viewportHeight="960">
-    <path
-        android:fillColor="@android:color/white"
-        android:pathData="M440,520L200,520L200,440L440,440L440,200L520,200L520,440L760,440L760,520L520,520L520,760L440,760L440,520Z" />
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:width="24dp" android:height="24dp" android:viewportWidth="24" android:viewportHeight="24">
+    <path android:fillColor="@android:color/white" android:pathData="M19,13H13V19H11V13H5V11H11V5H13V11H19V13Z" />
 </vector>

core/presentation/src/main/res/drawable/ic_drag_handle.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M240,320q-33,0 -56.5,-23.5T160,240q0,-33 23.5,-56.5T240,160q33,0 56.5,23.5T320,240q0,33 -23.5,56.5T240,320zM240,560q-33,0 -56.5,-23.5T160,480q0,-33 23.5,-56.5T240,400q33,0 56.5,23.5T320,480q0,33 -23.5,56.5T240,560zM240,800q-33,0 -56.5,-23.5T160,720q0,-33 23.5,-56.5T240,640q33,0 56.5,23.5T320,720q0,33 -23.5,56.5T240,800zM720,320q-33,0 -56.5,-23.5T640,240q0,-33 23.5,-56.5T720,160q33,0 56.5,23.5T800,240q0,33 -23.5,56.5T720,320zM720,560q-33,0 -56.5,-23.5T640,480q0,-33 23.5,-56.5T720,400q33,0 56.5,23.5T800,480q0,33 -23.5,56.5T720,560zM720,800q-33,0 -56.5,-23.5T640,720q0,-33 23.5,-56.5T720,640q33,0 56.5,23.5T800,720q0,33 -23.5,56.5T720,800z" />
+</vector>

core/presentation/src/main/res/drawable/ic_like.xml

@@ -1,9 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="24dp"
-    android:height="24dp"
-    android:viewportWidth="15"
-    android:viewportHeight="15">
-    <path
-        android:fillColor="@android:color/white"
-        android:pathData="M13.91,6.75c-1.17,2.25 -4.3,5.31 -6.07,6.94c-0.19,0.172 -0.48,0.172 -0.67,0C5.39,12.06 2.26,9 1.09,6.75C-1.48,1.8 5,-1.5 7.5,3.45C10,-1.5 16.48,1.8 13.91,6.75z" />
-</vector>

core/presentation/src/main/res/drawable/ic_match.xml

@@ -0,0 +1,22 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="96"
+    android:viewportHeight="96">
+
+    <path
+        android:fillColor="@android:color/transparent"
+        android:strokeColor="@android:color/white"
+        android:strokeWidth="6"
+        android:strokeLineCap="round"
+        android:strokeLineJoin="round"
+        android:pathData="M 8 76 C 8 44, 21 24, 39 24 C 57 24, 70 44, 70 76" />
+
+    <path
+        android:fillColor="@android:color/transparent"
+        android:strokeColor="@android:color/white"
+        android:strokeWidth="6"
+        android:strokeLineCap="round"
+        android:strokeLineJoin="round"
+        android:pathData="M 30 76 C 30 54, 44 42, 62 42 C 80 42, 94 54, 94 76" />
+</vector>

core/presentation/src/main/res/drawable/ic_pound.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M14,21c1.93,0 3.62,-1.17 4,-3l-1.75,-0.88C16,18.21 15.33,19 14,19l-4.9,0c0.83,-1 1.5,-2.34 1.5,-4c0,-0.35 -0.03,-0.69 -0.08,-1L14,14v-2l-4.18,0C9,10.42 8,9.6 8,8c0,-1.93 1.57,-3.5 3.5,-3.5c1.5,0 2.79,0.95 3.28,2.28L16.63,6c-0.8,-2.05 -2.79,-3.5 -5.13,-3.5C8.46,2.5 6,4.96 6,8c0,1.78 0.79,2.9 1.49,4L6,12v2l2.47,0c0.08,0.31 0.13,0.64 0.13,1c0,2.7 -2.6,4 -2.6,4v2H14z" />
+</vector>

core/presentation/src/main/res/drawable/ic_radar.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M480,880Q397,880 324,848.5Q251,817 197,763Q143,709 111.5,636Q80,563 80,480Q80,397 111.5,324Q143,251 197,197Q251,143 324,111.5Q397,80 480,80L520,80L520,411Q538,422 549,439.5Q560,457 560,480Q560,513 536.5,536.5Q513,560 480,560Q447,560 423.5,536.5Q400,513 400,480Q400,457 411,439Q422,421 440,411L440,325Q388,339 354,381.5Q320,424 320,480Q320,546 367,593Q414,640 480,640Q546,640 593,593Q640,546 640,480Q640,444 625.5,413.5Q611,383 586,360L643,303Q678,336 699,381.5Q720,427 720,480Q720,580 650,650Q580,720 480,720Q380,720 310,650Q240,580 240,480Q240,390 297,323.5Q354,257 440,243L440,162Q321,177 240.5,267Q160,357 160,480Q160,614 253,707Q346,800 480,800Q614,800 707,707Q800,614 800,480Q800,411 773,351Q746,291 699,247L756,190Q813,245 846.5,319.5Q880,394 880,480Q880,563 848.5,636Q817,709 763,763Q709,817 636,848.5Q563,880 480,880Z" />
+</vector>

core/presentation/src/main/res/drawable/ic_radio_tower.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path android:fillColor="#FF000000" android:pathData="M12,10A2,2 0 0,1 14,12C14,12.5 13.82,12.94 13.53,13.29L16.7,22H14.57L12,14.93L9.43,22H7.3L10.47,13.29C10.18,12.94 10,12.5 10,12A2,2 0 0,1 12,10M12,8A4,4 0 0,0 8,12C8,12.5 8.1,13 8.28,13.46L7.4,15.86C6.53,14.81 6,13.47 6,12A6,6 0 0,1 12,6A6,6 0 0,1 18,12C18,13.47 17.47,14.81 16.6,15.86L15.72,13.46C15.9,13 16,12.5 16,12A4,4 0 0,0 12,8M12,4A8,8 0 0,0 4,12C4,14.36 5,16.5 6.64,17.94L5.92,19.94C3.54,18.11 2,15.23 2,12A10,10 0 0,1 12,2A10,10 0 0,1 22,12C22,15.23 20.46,18.11 18.08,19.94L17.36,17.94C19,16.5 20,14.36 20,12A8,8 0 0,0 12,4Z" />
+</vector>

core/presentation/src/main/res/drawable/ic_refresh.xml

@@ -1,10 +1,12 @@
 <?xml version="1.0" encoding="utf-8"?>
+<!-- Standard Material refresh icon (24dp viewport), centered geometry -->
 <vector xmlns:android="http://schemas.android.com/apk/res/android"
     android:width="24dp"
     android:height="24dp"
     android:viewportWidth="24"
-    android:viewportHeight="24">
+    android:viewportHeight="24"
+>
     <path
-        android:fillColor="@android:color/white"
+        android:fillColor="#FF000000"
         android:pathData="M17.65,6.35C16.2,4.9 14.21,4 12,4c-4.42,0 -7.99,3.58 -7.99,8s3.57,8 7.99,8c3.73,0 6.84,-2.55 7.73,-6h-2.08c-0.82,2.33 -3.04,4 -5.65,4 -3.31,0 -6,-2.69 -6,-6s2.69,-6 6,-6c1.66,0 3.14,0.69 4.22,1.78L13,11h7V4l-2.35,2.35z" />
-</vector>
+</vector>

core/presentation/src/main/res/drawable/ic_satellite.xml

@@ -1,31 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="24dp"
-    android:height="24dp"
-    android:viewportWidth="128"
-    android:viewportHeight="128">
-  <path
-      android:pathData="m105.14,114.12a2.86,2.86 90,0 0,1.7 -0.85l19.33,-19.33a2.86,2.86 90,0 0,-0 -4.03l-26.58,-26.62a2.86,2.86 90,0 0,-1.84 -0.81l-7.92,-0.63 5.77,-5.77a2.86,2.86 90,0 0,-0 -4.03l-19.6,-19.64a2.86,2.86 90,0 0,-4.07 -0l-5.77,5.77 -0.63,-7.92a2.86,2.86 90,0 0,-0.81 -1.83l-26.63,-26.58a2.86,2.86 90,0 0,-4.07 -0l-19.29,19.29a2.86,2.86 90,0 0,-0 4.07l26.58,26.62a2.86,2.86 90,0 0,1.83 0.81l7.92,0.63 -5.77,5.77a2.86,2.86 90,0 0,-0 4.07l19.6,19.6a2.86,2.86 90,0 0,4.07 -0l5.77,-5.77 0.63,7.92a2.86,2.86 90,0 0,0.81 1.83l26.63,26.58a2.86,2.86 90,0 0,2.06 0.85,2.86 2.86,90 0,0 0.27,-0zM104.82,107.23 L80.97,83.38 80.16,72.69 85.58,67.27 96.28,68.12 120.13,91.93zM55.33,47.85 L44.63,47 20.78,23.19 36.08,7.89 59.89,31.74 60.74,42.44z"
-      android:fillColor="#ffffff"
-      android:strokeColor="#00000000"
-      android:fillType="evenOdd"/>
-  <path
-      android:pathData="m62.65,115.81a2.86,2.86 90,1 0,-0 -5.73c-11.46,-0 -22.88,-4.35 -31.63,-13.11 -8.74,-8.74 -13.1,-20.17 -13.1,-31.61a2.86,2.86 90,1 0,-5.73 -0c-0,12.9 4.94,25.83 14.77,35.66 9.85,9.85 22.77,14.78 35.68,14.78z"
-      android:fillColor="#ffffff"
-      android:strokeColor="#00000000"
-      android:fillType="evenOdd"/>
-  <path
-      android:pathData="m62.65,127a2.86,2.86 90,1 0,-0 -5.73c-14.32,-0 -28.61,-5.44 -39.55,-16.37 -10.93,-10.93 -16.38,-25.23 -16.38,-39.54a2.86,2.86 90,1 0,-5.73 -0c-0,15.76 6.03,31.56 18.06,43.59 12.03,12.03 27.82,18.05 43.6,18.05z"
-      android:fillColor="#ffffff"
-      android:strokeColor="#00000000"
-      android:fillType="evenOdd"/>
-  <path
-      android:pathData="m62.65,104.7a2.86,2.86 90,1 0,-0 -5.73c-8.62,-0 -17.2,-3.26 -23.78,-9.84 -6.58,-6.58 -9.86,-15.17 -9.86,-23.77a2.86,2.86 90,1 0,-5.73 -0c-0,10.06 3.86,20.15 11.53,27.82 7.67,7.67 17.76,11.52 27.83,11.52z"
-      android:fillColor="#ffffff"
-      android:strokeColor="#00000000"
-      android:fillType="evenOdd"/>
-  <path
-      android:pathData="m62.65,93.48a2.86,2.86 90,1 0,-0 -5.73c-5.74,-0 -11.45,-2.17 -15.84,-6.56 -4.38,-4.38 -6.56,-10.1 -6.56,-15.83a2.86,2.86 90,1 0,-5.73 -0c-0,7.19 2.76,14.41 8.24,19.88 5.48,5.48 12.69,8.23 19.89,8.23z"
-      android:fillColor="#ffffff"
-      android:strokeColor="#00000000"
-      android:fillType="evenOdd"/>
-</vector>

core/presentation/src/main/res/drawable/ic_satellite_alt.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- AMSAT tab icon provided by rt-bishop (upstream author), original SVG asset -->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <group
+        android:scaleX="0.242"
+        android:scaleY="0.242"
+        android:translateX="0.3"
+        android:translateY="-230.5">
+        <path android:fillColor="#FF000000" android:pathData="m 21.275553,967.35933 a 2.0000048,2.0000048 0 0 0 -1.1875,0.59375 l -13.5000003,13.5 a 2.0000048,2.0000048 0 0 0 0,2.8125 l 18.5625003,18.59382 a 2.0000048,2.0000048 0 0 0 1.2813,0.5625 l 5.5312,0.4375 -4.0312,4.0312 a 2.0000048,2.0000048 0 0 0 0,2.8126 l 13.6874,13.7187 a 2.0000048,2.0000048 0 0 0 2.8438,0 l 4.0312,-4.0312 0.4376,5.5312 a 2.0000048,2.0000048 0 0 0 0.5624,1.2813 l 18.5938,18.5625 a 2.0000048,2.0000048 0 0 0 2.8438,0 l 13.468705,-13.4688 a 2.0000048,2.0000048 0 0 0 0,-2.8437 l -18.562505,-18.5938 a 2.0000048,2.0000048 0 0 0 -1.2812,-0.5625 l -5.5313,-0.4375 4.0313,-4.0313 a 2.0000048,2.0000048 0 0 0 0,-2.8437 l -13.6876,-13.68757 a 2.0000048,2.0000048 0 0 0 -2.8437,0 l -4.0313,4.03125 -0.4374,-5.53125 a 2.0000048,2.0000048 0 0 0 -0.5626,-1.28125 l -18.5937,-18.5625 a 2.0000048,2.0000048 0 0 0 -1.4375,-0.59375 2.0000048,2.0000048 0 0 0 -0.1875,0 z m 0.2187,4.8125 16.6563,16.65625 0.5625,7.46875 -3.7812,3.78127 -7.4688,-0.59377 -16.6562,-16.625 z m 34.5626,41.46887 7.4687,0.5937 16.656305,16.625 -10.687605,10.6875 -16.625,-16.6562 -0.5937,-7.4688 z" />
+        <path android:fillColor="#FF000000" android:pathData="m 50.940553,966.18283 a 2.000005,2.000005 0 1 0 0,3.99969 c 7.9999,0 15.9734,3.03851 22.0884,9.15344 6.103605,6.10359 9.143805,14.08909 9.143805,22.07844 a 2.000005,2.000005 0 1 0 3.9994,0 c 0,-9.00692 -3.4462,-18.03775 -10.315,-24.90657 -6.877605,-6.8775 -15.900305,-10.325 -24.916605,-10.325 z" />
+        <path android:fillColor="#FF000000" android:pathData="m 50.940553,958.36533 a 2.000005,2.000005 0 1 0 0,3.99969 c 10.0021,0 19.9781,3.79987 27.613705,11.43562 7.6352,7.63517 11.4357,17.62207 11.4357,27.61376 a 2.000005,2.000005 0 1 0 3.9997,0 c 0,-11.00842 -4.207,-22.04171 -12.6072,-30.44188 -8.399505,-8.3996 -19.424005,-12.60719 -30.441905,-12.60719 z" />
+        <path android:fillColor="#FF000000" android:pathData="m 50.940553,973.94033 a 2.000005,2.000005 0 1 0 0,3.99938 c 6.0191,0 12.0105,2.279 16.6031,6.87156 4.5926,4.59255 6.881605,10.59683 6.881605,16.60313 a 2.000005,2.000005 0 1 0 3.9997,0 c 0,-7.02618 -2.6961,-14.07429 -8.053105,-19.43126 -5.3571,-5.35696 -12.398,-8.04281 -19.4313,-8.04281 z" />
+        <path android:fillColor="#FF000000" android:pathData="m 50.940553,981.77783 a 2.000005,2.000005 0 1 0 0,3.99938 c 4.0058,0 7.9968,1.51836 11.0578,4.57937 3.061,3.06099 4.5794,7.05193 4.5794,11.05782 a 2.000005,2.000005 0 1 0 3.9994,0 c 0,-5.02276 -1.9251,-10.06035 -5.7507,-13.88594 -3.8256,-3.82559 -8.8631,-5.75063 -13.8859,-5.75063 z" />
+    </group>
+</vector>

core/presentation/src/main/res/drawable/ic_tags.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M240,800L280,640L120,640L140,560L300,560L340,400L180,400L200,320L360,320L400,160L480,160L440,320L600,320L640,160L720,160L680,320L840,320L820,400L660,400L620,560L780,560L760,640L600,640L560,800L480,800L520,640L360,640L320,800L240,800ZM380,560L540,560L580,400L420,400L380,560Z" />
+</vector>

core/presentation/src/main/res/values-es/strings.xml

@@ -13,16 +13,12 @@
     <string name="nav_prefs">Ajustes</string>
 
     <!-- Satellites screen -->
-    <string name="sat_type_hint">Modos: %s</string>
-    <string name="sat_type_title">Seleccionar modos</string>
+    <string name="sat_type_hint">Tipo: %s</string>
+    <string name="sat_type_title">Seleccionar tipo de satélite</string>
     <string name="sat_search_hint">Id - Nombre</string>
     <string name="sat_search_clear">Vaciar</string>
     <string name="sat_clear_all">Vaciar todo</string>
     <string name="sat_select_all">Seleccionar todo</string>
-    <string name="sat_group_selected">Seleccionados</string>
-    <string name="sat_group_available">Disponibles</string>
-    <string name="sat_group_selected_count">Seleccionados (%1$d)</string>
-    <string name="sat_group_available_count">Disponibles (%1$d)</string>
     <string name="sat_empty_list_message">
         Asegúrese de que su consulta de búsqueda sea correcta y que la base de datos esté actualizada</string>
     <string name="sat_warning_title">Alarma\!</string>
@@ -30,16 +26,17 @@
         Esta aplicación incluye más de 9000 satélites.
         No tiene sentido rastrearlos todos a la vez.
         \n\nIntenta siempre limitar la lista a los que te
-        interesen mediante la búsqueda y el selector de modos.</string>
+        interesen mediante la búsqueda y el selector de tipos.</string>
 
     <!-- Passes screen -->
     <string name="pass_filter_title">Filtrar pases</string>
     <string name="pass_filter_elev">Elevación mínima</string>
     <string name="pass_filter_hours">Tiempo por delante</string>
+    <string name="pass_filter_history_hours">Tiempo anterior</string>
     <string name="pass_filter_aos_time">Ventana AOS</string>
     <string name="pass_filter_invert_time">Invertir ventana AOS</string>
     <string name="pass_filter_deep_space">DeepSpace (período &gt;225min)</string>
-    <string name="pass_modes_title">Seleccionar modos</string>
+    <string name="pass_modes_title">Tipo de modulación</string>
     <string name="pass_elevation">Elevación: %.1f°</string>
     <string name="pass_altitude">Altitud: %.0f km</string>
     <string name="pass_empty_list_message">
@@ -100,11 +97,11 @@
     <string name="prefs_loc_qth_title">QTH</string>
     <string name="prefs_loc_qth_error">Ubicación QTH no válida</string>
     <string name="prefs_loc_success">Ubicación actualizada con éxito</string>
-    <string name="prefs_station_title">Ubicación de la estación</string>
-    <string name="prefs_station_lat_text">Latitud de estación</string>
-    <string name="prefs_station_lon_text">Longitud de estación</string>
-    <string name="prefs_locator_title">Localizador QTH</string>
-    <string name="prefs_locator_text">Posición por localizador</string>
+    <string name="prefs_station_title">Ajustar ubicaicón de la estación</string>
+    <string name="prefs_station_lat_text">Latitud de tu estación terrestre</string>
+    <string name="prefs_station_lon_text">Longitud de tu estación terrestre</string>
+    <string name="prefs_locator_title">Ajustes ubicación QTH</string>
+    <string name="prefs_locator_text">Ajustar posición de la estación con tu ubicación</string>
 
     <string name="prefs_data_title">Datos satelitales</string>
     <string name="prefs_data_entries">Satélites: %s</string>
@@ -114,52 +111,48 @@
     <string name="prefs_data_clear">Vaciar</string>
     <string name="prefs_data_clear_success">Datos eliminados con éxito</string>
     <string name="prefs_data_update_success">Actualización completada con éxito</string>
-    <string name="prefs_data_import_satellites_error">No se importaron satélites. Usa un TLE/3LE (.txt) u OMM (.csv) válido.</string>
-    <string name="prefs_data_import_transceivers_error">No se importaron transceptores. Usa un SatNOGS (.json) válido.</string>
 
-    <string name="prefs_data_sources_title">Fuentes personalizadas</string>
-    <string name="prefs_data_sources_tle_switch">URL TLE</string>
-    <string name="prefs_data_sources_transceivers_switch">URL transceptores</string>
-    <string name="prefs_data_sources_url_title" translatable="false">URL (HTTPS)</string>
+    <string name="prefs_data_sources_title">Custom data sources</string>
+    <string name="prefs_data_import_satellites_error">No satellites imported. Select a valid TLE/3LE (.txt) or OMM (.csv) file.</string>
+    <string name="prefs_data_import_transceivers_error">No transceivers imported. Select a valid SatNOGS (.json) file.</string>
+    <string name="prefs_data_sources_url_title" translatable="false">URL</string>
+    <string name="prefs_data_sources_satellites_label" translatable="false">Satellites data</string>
+    <string name="prefs_data_sources_transceivers_label" translatable="false">Transceivers data</string>
+    <string name="prefs_net_frequency_offset_hint" translatable="false">Frequency offset (Hz)</string>
+    <string name="prefs_net_frequency_offset_help" translatable="false">Range: -50000 to 50000 Hz. Positive values increase reported frequency; negative values decrease it.</string>
+    <string name="prefs_data_sources_tle_switch">Custom TLE URL</string>
+    <string name="prefs_data_sources_transceivers_switch">Custom transceivers URL</string>
 
-    <string name="prefs_data_output_title">Salida de datos</string>
-    <string name="prefs_net_output">Red</string>
+    <string name="prefs_data_output_title">Data output</string>
+    <string name="prefs_net_output">Network</string>
     <string name="prefs_bt_output">Bluetooth</string>
-    <string name="prefs_cat_output">CAT</string>
 
-    <string name="nav_radiocontrol">Control de radio</string>
-    <string name="rc_settings_title">Control CAT</string>
-    <string name="rc_radio_model">Modelo de radio</string>
-    <string name="rc_tx_device_hint">Dirección BT TX</string>
-    <string name="rc_rx_device_hint">Dirección BT RX</string>
-    <string name="rc_tx_name_hint">Nombre radio TX</string>
-    <string name="rc_rx_name_hint">Nombre radio RX</string>
-    <string name="rc_enable_switch">Activar CAT</string>
-
-    <string name="prefs_net_title">Salida de red</string>
-    <string name="prefs_net_rotator_switch">Activar salida de rotación</string>
+    <string name="prefs_net_title">Salida de datos de red</string>
+    <string name="prefs_net_rotator_switch">Enable rotation output</string>
     <string name="prefs_net_rotator_address_hint">IP:Puerto</string>
     <string name="prefs_net_rotator_format_hint">Formato de datos</string>
-    <string name="prefs_net_frequency_switch">Activar salida de frecuencia</string>
+    <string name="prefs_net_frequency_switch">Enable frequency output</string>
     <string name="prefs_net_frequency_address_hint">IP:Puerto</string>
     <string name="prefs_net_frequency_format_hint">Formato de datos</string>
 
-    <string name="prefs_bt_title">Salida Bluetooth</string>
-    <string name="prefs_bt_rotator_switch">Activar salida de rotación</string>
-    <string name="prefs_bt_rotator_device_hint">ID dispositivo</string>
-    <string name="prefs_bt_rotator_output_hint">Formato</string>
-    <string name="prefs_bt_frequency_switch">Activar salida de frecuencia</string>
-    <string name="prefs_bt_frequency_device_hint">ID dispositivo</string>
-    <string name="prefs_bt_frequency_output_hint">Formato</string>
+    <string name="prefs_bt_title">Salida por Bluetooth</string>
+    <string name="prefs_bt_rotator_switch">Enable rotation output</string>
+    <string name="prefs_bt_rotator_device_hint">Id dispositivo</string>
+    <string name="prefs_bt_rotator_output_hint">Formato de datos</string>
+    <string name="prefs_bt_frequency_switch">Enable frequency output</string>
+    <string name="prefs_bt_frequency_device_hint">Id dispositivo</string>
+    <string name="prefs_bt_frequency_output_hint">Formato de datos</string>
     <string name="prefs_bt_perm_error">Revisa los permisos de Bluetooth</string>
     <string name="prefs_net_perm_error">Revisa los permisos de red</string>
 
-    <string name="prefs_other_title">Otros</string>
-    <string name="prefs_other_switch_utc">Hora UTC</string>
-    <string name="prefs_other_switch_update">Actualización automática</string>
-    <string name="prefs_other_switch_sweep">Animación radar</string>
-    <string name="prefs_other_switch_sensors">Sensores</string>
-    <string name="prefs_other_switch_night_mode">Filtro nocturno</string>
+    <string name="prefs_other_title">Otros ajustes</string>
+    <string name="prefs_other_switch_utc">Mostrar tiempos de pase en UTC</string>
+    <string name="prefs_other_switch_update">Habilitar auto actualización de datos</string>
+    <string name="prefs_other_switch_lotw_sync">Sincronizar automáticamente las cuadrículas LoTW confirmadas</string>
+    <string name="prefs_other_switch_sweep">Habilitar animaciones radar</string>
+    <string name="prefs_other_switch_sensors">Usar sensores para rotar vista de radar</string>
+    <string name="prefs_other_switch_night_mode">Activar filtro nocturno rojo</string>
+    <string name="prefs_other_switch_map_grid">Mostrar cuadrícula Maidenhead en el mapa</string>
 
     <string name="prefs_highlight_title">Resaltado de elevación</string>
     <string name="prefs_highlight_low">Baja &lt; %1$d°</string>

core/presentation/src/main/res/values-ru/strings.xml

@@ -13,32 +13,29 @@
     <string name="nav_prefs">Настройки</string>
 
     <!-- Satellites screen -->
-    <string name="sat_type_hint">Режимы: %s</string>
-    <string name="sat_type_title">Выберите режимы</string>
+    <string name="sat_type_hint">Тип: %s</string>
+    <string name="sat_type_title">Выберите тип спутника</string>
     <string name="sat_search_hint">Id - Название</string>
     <string name="sat_search_clear">Очистить</string>
     <string name="sat_clear_all">Очистить</string>
     <string name="sat_select_all">Выбрать</string>
-    <string name="sat_group_selected">Выбранные</string>
-    <string name="sat_group_available">Доступные</string>
-    <string name="sat_group_selected_count">Выбранные (%1$d)</string>
-    <string name="sat_group_available_count">Доступные (%1$d)</string>
     <string name="sat_empty_list_message">Убедитесь, что ваш поисковый запрос верен и база данных обновлена</string>
     <string name="sat_warning_title">Внимание\!</string>
     <string name="sat_warning_message">
         В этом приложении перечислено более 9000 спутников.
         Отслеживать их все одновременно бессмысленно.
         \n\nВсегда старайтесь сузить список до тех,
-        которые вас интересуют, используя поиск и выбор режимов.</string>
+        которые вас интересуют, используя поиск и селектор типов.</string>
 
     <!-- Passes screen -->
     <string name="pass_filter_title">Фильтровать пролеты</string>
     <string name="pass_filter_elev">Минимальная элевация</string>
     <string name="pass_filter_hours">Период расчёта</string>
+    <string name="pass_filter_history_hours">Прошедший период</string>
     <string name="pass_filter_aos_time">Окно AOS</string>
     <string name="pass_filter_invert_time">Инвертировать окно AOS</string>
     <string name="pass_filter_deep_space">DeepSpace (период &gt;225мин)</string>
-    <string name="pass_modes_title">Выберите режимы</string>
+    <string name="pass_modes_title">Выберите тип модуляции</string>
     <string name="pass_elevation">Элевация: %.1f°</string>
     <string name="pass_altitude">Высота: %d км</string>
     <string name="pass_empty_list_message">
@@ -99,11 +96,11 @@
     <string name="prefs_loc_qth_title">QTH</string>
     <string name="prefs_loc_qth_error">Неправильный локатор QTH</string>
     <string name="prefs_loc_success">Позиция успешно обновлена</string>
-    <string name="prefs_station_title">Положение станции</string>
-    <string name="prefs_station_lat_text">Широта станции</string>
-    <string name="prefs_station_lon_text">Долгота станции</string>
-    <string name="prefs_locator_title">Локатор QTH</string>
-    <string name="prefs_locator_text">Позиция по локатору</string>
+    <string name="prefs_station_title">Настройки местоположения</string>
+    <string name="prefs_station_lat_text">Введите широту наземной станции</string>
+    <string name="prefs_station_lon_text">Введите долготу наземной станции</string>
+    <string name="prefs_locator_title">Настройки локатора QTH</string>
+    <string name="prefs_locator_text">Введите позицию через локатор</string>
 
     <string name="prefs_data_title">Данные спутников</string>
     <string name="prefs_data_entries">Спутников: %s</string>
@@ -113,30 +110,23 @@
     <string name="prefs_data_clear">Очистить</string>
     <string name="prefs_data_clear_success">Очистка прошла успешно</string>
     <string name="prefs_data_update_success">Обновление прошло успешно</string>
-    <string name="prefs_data_import_satellites_error">Спутники не импортированы. Нужен TLE/3LE (.txt) или OMM (.csv).</string>
-    <string name="prefs_data_import_transceivers_error">Трансиверы не импортированы. Нужен SatNOGS (.json).</string>
 
-    <string name="prefs_data_sources_title">Свои источники</string>
-    <string name="prefs_data_sources_tle_switch">URL TLE</string>
-    <string name="prefs_data_sources_transceivers_switch">URL трансиверов</string>
-    <string name="prefs_data_sources_url_title" translatable="false">URL (HTTPS)</string>
+    <string name="prefs_data_sources_title">Свои источники данных</string>
+    <string name="prefs_data_import_satellites_error">No satellites imported. Select a valid TLE/3LE (.txt) or OMM (.csv) file.</string>
+    <string name="prefs_data_import_transceivers_error">No transceivers imported. Select a valid SatNOGS (.json) file.</string>
+    <string name="prefs_data_sources_url_title" translatable="false">URL</string>
+    <string name="prefs_data_sources_satellites_label" translatable="false">Satellites data</string>
+    <string name="prefs_data_sources_transceivers_label" translatable="false">Transceivers data</string>
+    <string name="prefs_net_frequency_offset_hint" translatable="false">Frequency offset (Hz)</string>
+    <string name="prefs_net_frequency_offset_help" translatable="false">Range: -50000 to 50000 Hz. Positive values increase reported frequency; negative values decrease it.</string>
+    <string name="prefs_data_sources_tle_switch">Custom TLE URL</string>
+    <string name="prefs_data_sources_transceivers_switch">Custom Transceivers URL</string>
 
-    <string name="prefs_data_output_title">Вывод</string>
+    <string name="prefs_data_output_title">Вывод данных</string>
     <string name="prefs_net_output">Сеть</string>
     <string name="prefs_bt_output">Bluetooth</string>
-    <string name="prefs_cat_output">CAT</string>
 
-    <string name="nav_radiocontrol">Управление радио</string>
-
-    <string name="rc_settings_title">CAT управление</string>
-    <string name="rc_radio_model">Модель радио</string>
-    <string name="rc_tx_device_hint">BT адрес TX</string>
-    <string name="rc_rx_device_hint">BT адрес RX</string>
-    <string name="rc_tx_name_hint">Имя радио TX</string>
-    <string name="rc_rx_name_hint">Имя радио RX</string>
-    <string name="rc_enable_switch">Включить CAT</string>
-
-    <string name="prefs_net_title">Сетевой вывод</string>
+    <string name="prefs_net_title">Вывод сетевых данных</string>
     <string name="prefs_net_rotator_switch">Включить вывод ротатора</string>
     <string name="prefs_net_rotator_address_hint">IP:Порт</string>
     <string name="prefs_net_rotator_format_hint">Формат</string>
@@ -144,22 +134,24 @@
     <string name="prefs_net_frequency_address_hint">IP:Порт</string>
     <string name="prefs_net_frequency_format_hint">Формат</string>
 
-    <string name="prefs_bt_title">Вывод Bluetooth</string>
+    <string name="prefs_bt_title">Вывод данных Bluetooth</string>
     <string name="prefs_bt_rotator_switch">Включить вывод ротатора</string>
-    <string name="prefs_bt_rotator_device_hint">ID устройства</string>
+    <string name="prefs_bt_rotator_device_hint">Id устройства</string>
     <string name="prefs_bt_rotator_output_hint">Формат</string>
     <string name="prefs_bt_frequency_switch">Включить вывод частоты</string>
-    <string name="prefs_bt_frequency_device_hint">ID устройства</string>
+    <string name="prefs_bt_frequency_device_hint">Id устройства</string>
     <string name="prefs_bt_frequency_output_hint">Формат</string>
     <string name="prefs_bt_perm_error">Нет разрешения использовать bluetooth</string>
     <string name="prefs_net_perm_error">Нет разрешения использовать сеть</string>
 
-    <string name="prefs_other_title">Прочее</string>
-    <string name="prefs_other_switch_utc">Время в UTC</string>
-    <string name="prefs_other_switch_update">Автообновление данных</string>
-    <string name="prefs_other_switch_sweep">Анимация радара</string>
-    <string name="prefs_other_switch_sensors">Сенсоры</string>
-    <string name="prefs_other_switch_night_mode">Ночной фильтр</string>
+    <string name="prefs_other_title">Другие настройки</string>
+    <string name="prefs_other_switch_utc">Показывать время по UTC</string>
+    <string name="prefs_other_switch_update">Обновлять данные автоматически</string>
+    <string name="prefs_other_switch_lotw_sync">Автосинхронизация подтверждённых сеток LoTW</string>
+    <string name="prefs_other_switch_sweep">Показывать анимацию радара</string>
+    <string name="prefs_other_switch_sensors">Использовать сенсоры устройства</string>
+    <string name="prefs_other_switch_night_mode">Включить красный ночной фильтр</string>
+    <string name="prefs_other_switch_map_grid">Показывать сетку Maidenhead на карте</string>
 
     <string name="prefs_highlight_title">Подсветка высоты</string>
     <string name="prefs_highlight_low">Низко &lt; %1$d°</string>

core/presentation/src/main/res/values-si/strings.xml

@@ -13,33 +13,30 @@
     <string name="nav_prefs">පසුතල</string>
 
     <!-- Satellites screen -->
-    <string name="sat_type_hint">මාදිලි: %s</string>
-    <string name="sat_type_title">මාදිලි තෝරන්න</string>
+    <string name="sat_type_hint">වර්ගය: %s</string>
+    <string name="sat_type_title">චන්ද්‍රිකා ආකාරය තෝරන්න</string>
     <string name="sat_search_hint">Id - නම</string>
     <string name="sat_search_clear">පිරිසිදු ක°</string>
     <string name="sat_clear_all">සියල්ල පිරිසිදු ක°</string>
     <string name="sat_select_all">සියල්ල තෝරන්න</string>
-    <string name="sat_group_selected">තෝරාගත්</string>
-    <string name="sat_group_available">තිබෙන</string>
-    <string name="sat_group_selected_count">තෝරාගත් (%1$d)</string>
-    <string name="sat_group_available_count">තිබෙන (%1$d)</string>
     <string name="sat_empty_list_message">
         ඔබගේ සෙවුම් විමසුම නිවැරදි බවත් දත්ත සමුදාය යාවත්කාලීන කර ඇති බවත් සහතික කර ගන්න</string>
     <string name="sat_warning_title">අවවාදයයි\!</string>
     <string name="sat_warning_message">
         මෙම යෙදුමේ ලැයිස්තුගත කර ඇති චන්ද්‍රිකා 9000 කට වඩා තිබේ.
         ඒවා සියල්ලම එකවර නිරීක්ෂණය කිරීම තේරුමක් නැති දෙයක්.
-        \n\nසෙවීම සහ මාදිලි තේරීම හරහා ඔබ උනන්දුවක් දක්වන
+        \n\nසෙවීම සහ වර්ග තේරීම හරහා ඔබ උනන්දුවක් දක්වන
         ඒවාට පමණක් ලැයිස්තුව පටු කිරීමට සැමවිටම උත්සාහ කරන්න.</string>
 
     <!-- Passes screen -->
     <string name="pass_filter_title">පසුකිරිම් පිරිපහදුව</string>
     <string name="pass_filter_elev">අවම උත්තෝලනය</string>
     <string name="pass_filter_hours">ඉදිරි කාලය</string>
+    <string name="pass_filter_history_hours">පෙර කාලය</string>
     <string name="pass_filter_aos_time">AOS කවුළුව</string>
     <string name="pass_filter_invert_time">AOS කවුළුව ප්‍රතිවිරුද්ධ කරන්න</string>
     <string name="pass_filter_deep_space">DeepSpace (කාලය &gt;225min)</string>
-    <string name="pass_modes_title">මූර්ජන තෝරන්න</string>
+    <string name="pass_modes_title">මූර්ජන ආකාරය තෝරන්න</string>
     <string name="pass_elevation">උත්තෝලනය: %.1f°</string>
     <string name="pass_altitude">උන්නතාශය: %d km</string>
     <string name="pass_empty_list_message">
@@ -74,7 +71,7 @@
     <string name="map_next">ඊළග</string>
     <string name="map_azimuth">දිගංශය: %.1f°</string>
     <string name="map_elevation">උත්තෝලනය: %.1f°</string>
-    <string name="map_altitude">උන්නතාශය: %.0f km</string>,
+    <string name="map_altitude">උන්නතාශය: %.0f km</string>
     <string name="map_distance">පරතරය: %.0f km</string>
     <string name="map_latitude">අක්‍ෂාංශ: %.1f°</string>
     <string name="map_longitude">දේශාංශ: %.1f°</string>
@@ -100,11 +97,11 @@
     <string name="prefs_loc_qth_title">QTH</string>
     <string name="prefs_loc_qth_error">QTH locator වලංගු නොවේ</string>
     <string name="prefs_loc_success">පිහිටීම යාවත්කාලීනය සාර්ථකයි</string>
-    <string name="prefs_station_title">පොළ පිහිටීම</string>
-    <string name="prefs_station_lat_text">පොළ අක්‍ෂාංශය</string>
-    <string name="prefs_station_lon_text">පොළ දේශාංශය</string>
-    <string name="prefs_locator_title">QTH locator</string>
-    <string name="prefs_locator_text">locator මඟින් පොළ පිහිටීම සකසන්න</string>
+    <string name="prefs_station_title">පොළෙහි පිහිටීම් පසුතල</string>
+    <string name="prefs_station_lat_text">ඔබගේ පොළෙහි අක්‍ෂාංශය සකසන්න</string>
+    <string name="prefs_station_lon_text">ඔබගේ පොළෙහි දේශාංශය සකසන්න</string>
+    <string name="prefs_locator_title">QTH locator පසුතල</string>
+    <string name="prefs_locator_text"> ඔබගේ locator භාවිතා කර පොළහි පිහිටීම සකසන්න</string>
 
     <string name="prefs_data_title">චන්ද්‍රිකා දත්ත</string>
     <string name="prefs_data_entries">චන්ද්‍රිකා: %s</string>
@@ -114,52 +111,48 @@
     <string name="prefs_data_clear">පිරිසිදු ක°</string>
     <string name="prefs_data_clear_success">දත්ත ඉවත් කිරීම සාර්ථකයි</string>
     <string name="prefs_data_update_success">යාවත්කාලීනය සම්පූර්ණ කිරීම සාර්ථකයි</string>
-    <string name="prefs_data_import_satellites_error">චන්ද්‍රිකා ආයාත නොවීය. වලංගු TLE/3LE (.txt) හෝ OMM (.csv) ගොනුවක් තෝරන්න.</string>
-    <string name="prefs_data_import_transceivers_error">සම්ප්‍රේෂක ආයාත නොවීය. වලංගු SatNOGS (.json) ගොනුවක් තෝරන්න.</string>
 
-    <string name="prefs_data_sources_title">අභිරුචි මූලාශ්‍ර</string>
-    <string name="prefs_data_sources_tle_switch">TLE URL</string>
-    <string name="prefs_data_sources_transceivers_switch">Transceivers URL</string>
-    <string name="prefs_data_sources_url_title" translatable="false">URL (HTTPS)</string>
+    <string name="prefs_data_sources_title">Custom data sources</string>
+    <string name="prefs_data_import_satellites_error">No satellites imported. Select a valid TLE/3LE (.txt) or OMM (.csv) file.</string>
+    <string name="prefs_data_import_transceivers_error">No transceivers imported. Select a valid SatNOGS (.json) file.</string>
+    <string name="prefs_data_sources_url_title" translatable="false">URL</string>
+    <string name="prefs_data_sources_satellites_label" translatable="false">Satellites data</string>
+    <string name="prefs_data_sources_transceivers_label" translatable="false">Transceivers data</string>
+    <string name="prefs_net_frequency_offset_hint" translatable="false">Frequency offset (Hz)</string>
+    <string name="prefs_net_frequency_offset_help" translatable="false">Range: -50000 to 50000 Hz. Positive values increase reported frequency; negative values decrease it.</string>
+    <string name="prefs_data_sources_tle_switch">Custom TLE URL</string>
+    <string name="prefs_data_sources_transceivers_switch">Custom transceivers URL</string>
 
-    <string name="prefs_data_output_title">දත්ත ප්‍රතිදානය</string>
-    <string name="prefs_net_output">ජාලය</string>
+    <string name="prefs_data_output_title">Data output</string>
+    <string name="prefs_net_output">Network</string>
     <string name="prefs_bt_output">Bluetooth</string>
-    <string name="prefs_cat_output">CAT</string>
-
-    <string name="nav_radiocontrol">රේඩියෝ පාලනය</string>
-    <string name="rc_settings_title">CAT පාලනය</string>
-    <string name="rc_radio_model">රේඩියෝ මාදිලිය</string>
-    <string name="rc_tx_device_hint">TX BT ලිපිනය</string>
-    <string name="rc_rx_device_hint">RX BT ලිපිනය</string>
-    <string name="rc_tx_name_hint">TX රේඩියෝ නම</string>
-    <string name="rc_rx_name_hint">RX රේඩියෝ නම</string>
-    <string name="rc_enable_switch">CAT සබල කරන්න</string>
 
     <string name="prefs_net_title">ජාල ප්‍රතිදානය</string>
-    <string name="prefs_net_rotator_switch">Rotation ප්‍රතිදානය සබල කරන්න</string>
+    <string name="prefs_net_rotator_switch">Enable rotation output</string>
     <string name="prefs_net_rotator_address_hint">IP:Port</string>
-    <string name="prefs_net_rotator_format_hint">දත්ත ආකෘතිය</string>
-    <string name="prefs_net_frequency_switch">Frequency ප්‍රතිදානය සබල කරන්න</string>
+    <string name="prefs_net_rotator_format_hint">දත්ත අකාරය</string>
+    <string name="prefs_net_frequency_switch">Enable frequency output</string>
     <string name="prefs_net_frequency_address_hint">IP:Port</string>
-    <string name="prefs_net_frequency_format_hint">දත්ත ආකෘතිය</string>
+    <string name="prefs_net_frequency_format_hint">දත්ත අකාරය</string>
 
-    <string name="prefs_bt_title">Bluetooth ප්‍රතිදානය</string>
-    <string name="prefs_bt_rotator_switch">Rotation ප්‍රතිදානය සබල කරන්න</string>
-    <string name="prefs_bt_rotator_device_hint">උපාංග ID</string>
-    <string name="prefs_bt_rotator_output_hint">දත්ත ආකෘතිය</string>
-    <string name="prefs_bt_frequency_switch">Frequency ප්‍රතිදානය සබල කරන්න</string>
-    <string name="prefs_bt_frequency_device_hint">උපාංග ID</string>
-    <string name="prefs_bt_frequency_output_hint">දත්ත ආකෘතිය</string>
+    <string name="prefs_bt_title">Bluetooth දත්ත ප්‍රතිදානය</string>
+    <string name="prefs_bt_rotator_switch">Enable rotation output</string>
+    <string name="prefs_bt_rotator_device_hint">උපාංග id</string>
+    <string name="prefs_bt_rotator_output_hint">දත්ත අකාරය</string>
+    <string name="prefs_bt_frequency_switch">Enable frequency output</string>
+    <string name="prefs_bt_frequency_device_hint">උපාංග id</string>
+    <string name="prefs_bt_frequency_output_hint">දත්ත අකාරය</string>
     <string name="prefs_bt_perm_error">Bluetooth අවසර පරික්‍ෂා ක°</string>
     <string name="prefs_net_perm_error">Network අවසර පරික්‍ෂා කරන්න</string>
 
-    <string name="prefs_other_title">වෙනත්</string>
-    <string name="prefs_other_switch_utc">UTC වේලාව</string>
-    <string name="prefs_other_switch_update">දත්ත ස්වයං යාවත්කාලීන</string>
-    <string name="prefs_other_switch_sweep">Radar sweep</string>
-    <string name="prefs_other_switch_sensors">සංවේදක</string>
-    <string name="prefs_other_switch_night_mode">රාත්‍රී පෙරහන</string>
+    <string name="prefs_other_title">වෙනත් සැකසුම්</string>
+    <string name="prefs_other_switch_utc">පසුකර වේලාවන් UTC මගින්</string>
+    <string name="prefs_other_switch_update">ස්වයං දත්ත යාවත්කාලීනය</string>
+    <string name="prefs_other_switch_lotw_sync">LoTW තහවුරු කළ ජාල ස්වයං සමමුහුර්තකරණය</string>
+    <string name="prefs_other_switch_sweep">radar sweep සජීවිකරණය සබල කරන්න</string>
+    <string name="prefs_other_switch_sensors">Radar දර්ශනය කරකැවීමට සංවේදක භාවිතා කරන්න </string>
+    <string name="prefs_other_switch_night_mode">රතු රාත්‍රී පෙරහන සබල කරන්න</string>
+    <string name="prefs_other_switch_map_grid">සිතියමේ Maidenhead ජාලකය පෙන්වන්න</string>
 
     <string name="prefs_highlight_title">උස් උද්දීපනය</string>
     <string name="prefs_highlight_low">අඩු &lt; %1$d°</string>

core/presentation/src/main/res/values-tr/strings.xml

@@ -14,33 +14,30 @@
     <string name="nav_prefs">Ayarlar</string>
 
     <!-- Satellites screen -->
-    <string name="sat_type_hint">Modlar: %s</string>
-    <string name="sat_type_title">Modları seçin</string>
+    <string name="sat_type_hint">Uydu türü: %s</string>
+    <string name="sat_type_title">Uydu türü seçin</string>
     <string name="sat_search_hint">Id - Ad</string>
     <string name="sat_search_clear">Temizle</string>
     <string name="sat_clear_all">Tümünü temizle</string>
     <string name="sat_select_all">Tümünü seç</string>
-    <string name="sat_group_selected">Seçilenler</string>
-    <string name="sat_group_available">Kullanılabilir</string>
-    <string name="sat_group_selected_count">Seçilenler (%1$d)</string>
-    <string name="sat_group_available_count">Kullanılabilir (%1$d)</string>
     <string name="sat_empty_list_message">"Arama sorgunuzun doğru olduğundan ve veritabanının güncellendiğinden emin olun"</string>
     <string name="sat_warning_title">Uyarı\!</string>
     <string name="sat_warning_message">
         Bu uygulamada 9000\'den fazla uydu listelenmiştir.
         Hepsini aynı anda takip etmek anlamsızdır.
         \n\nListeyi yalnızca ilgilendiğiniz uydularla
-        daraltmak için arama ve mod seçiciyi kullanın.</string>
+        daraltmak için arama ve tür seçiciyi kullanın.</string>
 
     <!-- Passes screen -->
     <string name="pass_filter_title">Geçişleri filtrele</string>
     <string name="pass_filter_elev">Minimum yükseklik açısı</string>
     <string name="pass_filter_hours">Gösterilecek zaman</string>
+    <string name="pass_filter_history_hours">Geçmiş süre</string>
     <string name="pass_filter_aos_time">AOS aralığı</string>
     <string name="pass_filter_invert_time">AOS aralığını tersine çevir</string>
     <string name="pass_filter_deep_space">DeepSpace (periyot &gt;225dk)</string>
     <string name="pass_time_placeholder" translatable="false"> -- : -- : -- </string>
-    <string name="pass_modes_title">Modları seçin</string>
+    <string name="pass_modes_title">Modulasyon türü seçin</string>
     <string name="pass_satId" translatable="false">%05d</string>
     <string name="pass_elevation">Yükseklik açısı: %.1f°</string>
     <string name="pass_deep_space" translatable="false">DeepSpace</string>
@@ -131,11 +128,11 @@
     <string name="prefs_loc_qth_title">QTH</string>
     <string name="prefs_loc_qth_error">Geçersiz QTH konumlandırıcısı</string>
     <string name="prefs_loc_success">Konum başarıyla güncellendi</string>
-    <string name="prefs_station_title">İstasyon konumu</string>
-    <string name="prefs_station_lat_text">İstasyon enlemi</string>
-    <string name="prefs_station_lon_text">İstasyon boylamı</string>
-    <string name="prefs_locator_title">QTH konumlandırıcı</string>
-    <string name="prefs_locator_text">Konumu lokatörle ayarla</string>
+    <string name="prefs_station_title">İstasyon konumu ayarları</string>
+    <string name="prefs_station_lat_text">Yer istasyonunuzun enlemini girin</string>
+    <string name="prefs_station_lon_text">Yer istasyonunuzun boylamını girin</string>
+    <string name="prefs_locator_title">QTH konumlandırıcı ayarları</string>
+    <string name="prefs_locator_text">İstasyon konumunu konumlandırıcı ile ayarlayın</string>
 
     <string name="prefs_data_title">Uydu verisi</string>
     <string name="prefs_data_entries">Uydular: %s</string>
@@ -145,30 +142,34 @@
     <string name="prefs_data_clear">Temizle</string>
     <string name="prefs_data_clear_success">Veriler başarıyla temizlendi</string>
     <string name="prefs_data_update_success">Güncelleme başarıyla tamamlandı</string>
-    <string name="prefs_data_import_satellites_error">Uydu içe aktarılmadı. Geçerli bir TLE/3LE (.txt) veya OMM (.csv) dosyası seçin.</string>
-    <string name="prefs_data_import_transceivers_error">Transceiver içe aktarılmadı. Geçerli bir SatNOGS (.json) dosyası seçin.</string>
 
-    <string name="prefs_data_sources_title">Özel kaynaklar</string>
-    <string name="prefs_data_sources_tle_switch">TLE URL</string>
-    <string name="prefs_data_sources_transceivers_switch">Transceiver URL</string>
+    <string name="prefs_data_sources_title">Özel veri kaynakları</string>
+    <string name="prefs_data_import_satellites_error">No satellites imported. Select a valid TLE/3LE (.txt) or OMM (.csv) file.</string>
+    <string name="prefs_data_import_transceivers_error">No transceivers imported. Select a valid SatNOGS (.json) file.</string>
+    <string name="prefs_data_sources_satellites_label" translatable="false">Satellites data</string>
+    <string name="prefs_data_sources_transceivers_label" translatable="false">Transceivers data</string>
+    <string name="prefs_net_frequency_offset_hint" translatable="false">Frequency offset (Hz)</string>
+    <string name="prefs_net_frequency_offset_help" translatable="false">Range: -50000 to 50000 Hz. Positive values increase reported frequency; negative values decrease it.</string>
+    <string name="prefs_data_sources_tle_switch">Özel TLE URL</string>
+    <string name="prefs_data_sources_transceivers_switch">Özel transceiver URL</string>
     <string name="prefs_data_sources_url_title" translatable="false">URL (HTTPS)</string>
 
-    <string name="prefs_data_output_title">Veri çıkışı</string>
+    <string name="prefs_data_output_title">Veri aktarımı</string>
     <string name="prefs_net_output">Ağ</string>
     <string name="prefs_bt_output">Bluetooth</string>
     <string name="prefs_cat_output">CAT</string>
 
     <!-- Radio Control -->
     <string name="nav_radiocontrol">Radyo Kontrolü</string>
-    <string name="rc_settings_title">CAT kontrolü</string>
+    <string name="rc_settings_title">CAT Radyo Kontrolü</string>
     <string name="rc_radio_model">Radyo Modeli</string>
-    <string name="rc_tx_device_hint">TX BT adresi</string>
-    <string name="rc_rx_device_hint">RX BT adresi</string>
+    <string name="rc_tx_device_hint">TX Radyo BT Adresi</string>
+    <string name="rc_rx_device_hint">RX Radyo BT Adresi</string>
     <string name="rc_tx_name_hint">TX Radyo Adı</string>
     <string name="rc_rx_name_hint">RX Radyo Adı</string>
-    <string name="rc_enable_switch">CAT\'i etkinleştir</string>
+    <string name="rc_enable_switch">CAT Kontrolünü Etkinleştir</string>
 
-    <string name="prefs_net_title">Ağ çıkışı</string>
+    <string name="prefs_net_title">Ağ veri çıkışı</string>
     <string name="prefs_net_rotator_switch">Döndürme çıkışını etkinleştir</string>
     <string name="prefs_net_rotator_address_hint">IP:Port</string>
     <string name="prefs_net_rotator_format_hint">Biçim</string>
@@ -176,22 +177,24 @@
     <string name="prefs_net_frequency_address_hint">IP:Port</string>
     <string name="prefs_net_frequency_format_hint">Biçim</string>
 
-    <string name="prefs_bt_title">Bluetooth çıkışı</string>
+    <string name="prefs_bt_title">Bluetooth veri çıkışı</string>
     <string name="prefs_bt_rotator_switch">Döndürme çıkışını etkinleştir</string>
     <string name="prefs_bt_rotator_device_hint">Cihaz kimliği</string>
-    <string name="prefs_bt_rotator_output_hint">Biçim</string>
+    <string name="prefs_bt_rotator_output_hint">Veri biçimi</string>
     <string name="prefs_bt_frequency_switch">Frekans çıkışını etkinleştir</string>
     <string name="prefs_bt_frequency_device_hint">Cihaz kimliği</string>
-    <string name="prefs_bt_frequency_output_hint">Biçim</string>
+    <string name="prefs_bt_frequency_output_hint">Veri biçimi</string>
     <string name="prefs_bt_perm_error">Bluetooth izninizi kontrol edin</string>
     <string name="prefs_net_perm_error">Ağ izninizi kontrol edin</string>
 
-    <string name="prefs_other_title">Diğer</string>
-    <string name="prefs_other_switch_utc">UTC saati</string>
-    <string name="prefs_other_switch_update">Veriyi otomatik güncelle</string>
-    <string name="prefs_other_switch_sweep">Radar taraması</string>
-    <string name="prefs_other_switch_sensors">Sensör</string>
-    <string name="prefs_other_switch_night_mode">Gece filtresi</string>
+    <string name="prefs_other_title">Diğer ayarlar</string>
+    <string name="prefs_other_switch_utc">Geçiş saatini UTC olarak göster</string>
+    <string name="prefs_other_switch_update">Otomatik veri güncellemeyi etkinleştir</string>
+    <string name="prefs_other_switch_lotw_sync">LoTW onaylı kareleri otomatik senkronize et</string>
+    <string name="prefs_other_switch_sweep">Radar taramasını etkinleştir</string>
+    <string name="prefs_other_switch_sensors">Radar görünümünü döndürmek için sensörleri kullan</string>
+    <string name="prefs_other_switch_night_mode">Kırmızı gece filtresini etkinleştir</string>
+    <string name="prefs_other_switch_map_grid">Haritada Maidenhead ızgarasını göster</string>
 
     <string name="prefs_highlight_title">Elevasyon vurgusu</string>
     <string name="prefs_highlight_low">Düşük &lt; %1$d°</string>
@@ -205,7 +208,8 @@
         \n• Dave Moten (predict4java)
         \n• Alexandru Csete (Gpredict)
         \n• Dr T.S. Kelso (Celestrak)
-        \n• Libre Space Foundation (SatNOGS)</string>
+        \n• Libre Space Foundation (SatNOGS)
+        \n• BG7NTA BG5JSU (CW decoding feature)</string>
     <string name="prefs_outro_license">Bu uygulama herhangi bir garanti sunmaz</string>
 
 </resources>

core/presentation/src/main/res/values-uk/strings.xml

@@ -13,16 +13,12 @@
     <string name="nav_prefs">Налаштування</string>
 
     <!-- Satellites screen -->
-    <string name="sat_type_hint">Режими: %s</string>
-    <string name="sat_type_title">Виберіть режими</string>
+    <string name="sat_type_hint">Тип: %s</string>
+    <string name="sat_type_title">Виберіть тип супутника</string>
     <string name="sat_search_hint">Id - Назва</string>
     <string name="sat_search_clear">Очистити</string>
     <string name="sat_clear_all">Очистити всі</string>
     <string name="sat_select_all">Вибрати всі</string>
-    <string name="sat_group_selected">Обрані</string>
-    <string name="sat_group_available">Доступні</string>
-    <string name="sat_group_selected_count">Обрані (%1$d)</string>
-    <string name="sat_group_available_count">Доступні (%1$d)</string>
     <string name="sat_empty_list_message">
         Переконайтеся, що ваш пошуковий запит правильний, а база даних оновлена</string>
     <string name="sat_warning_title">Увага\!</string>
@@ -30,16 +26,17 @@
         У цьому додатку перелічено понад 9000 супутників.
         Немає сенсу відстежувати їх усі одночасно.
         \n\nЗавжди намагайтеся звузити список лише до тих,
-        які вас цікавлять, за допомогою пошуку та вибору режимів.</string>
+        які вас цікавлять, за допомогою пошуку та селектора типів.</string>
 
     <!-- Passes screen -->
     <string name="pass_filter_title">Фільтр прольотів</string>
     <string name="pass_filter_elev">Мінімальне піднесень</string>
     <string name="pass_filter_hours">Час вперед</string>
+    <string name="pass_filter_history_hours">Час назад</string>
     <string name="pass_filter_aos_time">Вікно AOS</string>
     <string name="pass_filter_invert_time">Інвертувати вікно AOS</string>
     <string name="pass_filter_deep_space">DeepSpace (період &gt;225хв)</string>
-    <string name="pass_modes_title">Виберіть режими</string>
+    <string name="pass_modes_title">Виберіть тип модуляції</string>
     <string name="pass_elevation">Піднес.: %.1f°</string>
     <string name="pass_altitude">Висота: %.0f км</string>
     <string name="pass_empty_list_message">
@@ -100,11 +97,11 @@
     <string name="prefs_loc_qth_title">QTH</string>
     <string name="prefs_loc_qth_error">Некоректний локатор QTH</string>
     <string name="prefs_loc_success">Позицію успішно оновлено</string>
-    <string name="prefs_station_title">Позиція станції</string>
-    <string name="prefs_station_lat_text">Широта станції</string>
-    <string name="prefs_station_lon_text">Довгота станції</string>
-    <string name="prefs_locator_title">Локатор QTH</string>
-    <string name="prefs_locator_text">Позиція за локатором</string>
+    <string name="prefs_station_title">Налаштування місцезнаходження станції</string>
+    <string name="prefs_station_lat_text">Широта місцезнаходження станції</string>
+    <string name="prefs_station_lon_text">Довгота місцезнаходження станції</string>
+    <string name="prefs_locator_title">Налаштування QTH локатора</string>
+    <string name="prefs_locator_text">Задати позицію за QTH локатором</string>
 
     <string name="prefs_data_title">Супутникові дані</string>
     <string name="prefs_data_entries">Супутників: %s</string>
@@ -114,52 +111,48 @@
     <string name="prefs_data_clear">Очистити</string>
     <string name="prefs_data_clear_success">Дані успішно очищено</string>
     <string name="prefs_data_update_success">Оновлення успішне</string>
-    <string name="prefs_data_import_satellites_error">Супутники не імпортовано. Потрібен TLE/3LE (.txt) або OMM (.csv).</string>
-    <string name="prefs_data_import_transceivers_error">Трансивери не імпортовано. Потрібен SatNOGS (.json).</string>
 
-    <string name="prefs_data_sources_title">Власні джерела</string>
-    <string name="prefs_data_sources_tle_switch">URL TLE</string>
-    <string name="prefs_data_sources_transceivers_switch">URL трансиверів</string>
-    <string name="prefs_data_sources_url_title" translatable="false">URL (HTTPS)</string>
+    <string name="prefs_data_sources_title">Custom data sources</string>
+    <string name="prefs_data_import_satellites_error">No satellites imported. Select a valid TLE/3LE (.txt) or OMM (.csv) file.</string>
+    <string name="prefs_data_import_transceivers_error">No transceivers imported. Select a valid SatNOGS (.json) file.</string>
+    <string name="prefs_data_sources_url_title" translatable="false">URL</string>
+    <string name="prefs_data_sources_satellites_label" translatable="false">Satellites data</string>
+    <string name="prefs_data_sources_transceivers_label" translatable="false">Transceivers data</string>
+    <string name="prefs_net_frequency_offset_hint" translatable="false">Frequency offset (Hz)</string>
+    <string name="prefs_net_frequency_offset_help" translatable="false">Range: -50000 to 50000 Hz. Positive values increase reported frequency; negative values decrease it.</string>
+    <string name="prefs_data_sources_tle_switch">Custom TLE URL</string>
+    <string name="prefs_data_sources_transceivers_switch">Custom transceivers URL</string>
 
-    <string name="prefs_data_output_title">Вивід даних</string>
-    <string name="prefs_net_output">Мережа</string>
+    <string name="prefs_data_output_title">Data output</string>
+    <string name="prefs_net_output">Network</string>
     <string name="prefs_bt_output">Bluetooth</string>
-    <string name="prefs_cat_output">CAT</string>
 
-    <string name="nav_radiocontrol">Керування радіо</string>
-    <string name="rc_settings_title">CAT керування</string>
-    <string name="rc_radio_model">Модель радіо</string>
-    <string name="rc_tx_device_hint">BT адреса TX</string>
-    <string name="rc_rx_device_hint">BT адреса RX</string>
-    <string name="rc_tx_name_hint">Назва радіо TX</string>
-    <string name="rc_rx_name_hint">Назва радіо RX</string>
-    <string name="rc_enable_switch">Увімкнути CAT</string>
-
-    <string name="prefs_net_title">Мережевий вивід</string>
-    <string name="prefs_net_rotator_switch">Увімкнути вивід повороту</string>
+    <string name="prefs_net_title">Вивід мережевих даних</string>
+    <string name="prefs_net_rotator_switch">Enable rotation output</string>
     <string name="prefs_net_rotator_address_hint">IP:Порт</string>
     <string name="prefs_net_rotator_format_hint">Формат даних</string>
-    <string name="prefs_net_frequency_switch">Увімкнути вивід частоти</string>
+    <string name="prefs_net_frequency_switch">Enable frequency output</string>
     <string name="prefs_net_frequency_address_hint">IP:Порт</string>
     <string name="prefs_net_frequency_format_hint">Формат даних</string>
 
-    <string name="prefs_bt_title">Вивід Bluetooth</string>
-    <string name="prefs_bt_rotator_switch">Увімкнути вивід повороту</string>
-    <string name="prefs_bt_rotator_device_hint">ID пристрою</string>
+    <string name="prefs_bt_title">Вивід даних Bluetooth</string>
+    <string name="prefs_bt_rotator_switch">Enable rotation output</string>
+    <string name="prefs_bt_rotator_device_hint">Id пристрою</string>
     <string name="prefs_bt_rotator_output_hint">Формат даних</string>
-    <string name="prefs_bt_frequency_switch">Увімкнути вивід частоти</string>
-    <string name="prefs_bt_frequency_device_hint">ID пристрою</string>
+    <string name="prefs_bt_frequency_switch">Enable frequency output</string>
+    <string name="prefs_bt_frequency_device_hint">Id пристрою</string>
     <string name="prefs_bt_frequency_output_hint">Формат даних</string>
     <string name="prefs_bt_perm_error">Перевірте дозвіл Bluetooth</string>
     <string name="prefs_net_perm_error">Перевірте дозвіл мережі</string>
 
-    <string name="prefs_other_title">Інше</string>
-    <string name="prefs_other_switch_utc">Час в UTC</string>
-    <string name="prefs_other_switch_update">Автооновлення даних</string>
-    <string name="prefs_other_switch_sweep">Анімація радара</string>
-    <string name="prefs_other_switch_sensors">Сенсори</string>
-    <string name="prefs_other_switch_night_mode">Нічний фільтр</string>
+    <string name="prefs_other_title">Інші налаштування</string>
+    <string name="prefs_other_switch_utc">Показувати час в UTC</string>
+    <string name="prefs_other_switch_update">Автоматичне оновлення даних</string>
+    <string name="prefs_other_switch_lotw_sync">Автосинхронізація підтверджених сіток LoTW</string>
+    <string name="prefs_other_switch_sweep">Показувати анімацію радара</string>
+    <string name="prefs_other_switch_sensors">Використовувати сенсори пристрою</string>
+    <string name="prefs_other_switch_night_mode">Увімкнути червоний нічний фільтр</string>
+    <string name="prefs_other_switch_map_grid">Показувати сітку Maidenhead на мапі</string>
 
     <string name="prefs_highlight_title">Підсвічування висоти</string>
     <string name="prefs_highlight_low">Низько &lt; %1$d°</string>

core/presentation/src/main/res/values-zh/strings.xml

@@ -9,32 +9,30 @@
     <string name="nav_sat">卫星</string>
     <string name="nav_pass">过境</string>
     <string name="nav_radar">雷达</string>
+    <string name="nav_mutual">匹配</string>
     <string name="nav_map">地图</string>
     <string name="nav_prefs">设置</string>
 
     <!-- Satellites screen -->
-    <string name="sat_type_hint">模式：%s</string>
-    <string name="sat_type_title">选择模式</string>
+    <string name="sat_type_hint">类型：%s</string>
+    <string name="sat_type_title">选择卫星类型</string>
     <string name="sat_search_hint">Id - 名称</string>
     <string name="sat_search_clear">清空</string>
     <string name="sat_clear_all">全部清空</string>
     <string name="sat_select_all">全选</string>
-    <string name="sat_group_selected">已选择</string>
-    <string name="sat_group_available">可用</string>
-    <string name="sat_group_selected_count">已选择（%1$d）</string>
-    <string name="sat_group_available_count">可用（%1$d）</string>
     <string name="sat_empty_list_message">请确保您的搜索查询正确且数据库已更新</string>
     <string name="sat_warning_title">警告\!</string>
-    <string name="sat_warning_message">此应用收录了超过9000颗卫星信息\n同时追踪所有卫星并不现实\n建议始终通过搜索和模式筛选功能仅勾选您感兴趣的卫星</string>
+    <string name="sat_warning_message">此应用收录了超过9000颗卫星信息\n同时追踪所有卫星并不现实\n建议始终通过搜索和分类筛选功能仅勾选您感兴趣的卫星</string>
 
     <!-- Passes screen -->
     <string name="pass_filter_title">筛选过境</string>
     <string name="pass_filter_elev">仰角值</string>
     <string name="pass_filter_hours">提前时间</string>
+    <string name="pass_filter_history_hours">历史过境时间</string>
     <string name="pass_filter_aos_time">AOS 时间段</string>
     <string name="pass_filter_invert_time">反选 AOS 时间段</string>
     <string name="pass_filter_deep_space">DeepSpace（周期 &gt;225分钟）</string>
-    <string name="pass_modes_title">选择模式</string>
+    <string name="pass_modes_title">选择调制类型</string>
     <string name="pass_elevation">仰角：%.1f°</string>
     <string name="pass_altitude">高度：%d km</string>
     <string name="pass_empty_list_message">请确保您的过滤器设置正确，并且已选择卫星</string>
@@ -42,6 +40,43 @@
     <string name="pass_welcome_title">欢迎来到 Look4Sat\!</string>
     <string name="pass_welcome_message">请务必在设置中通过GPS、经纬度或QTH定位您的位置\n建议至少每周更新一次数据库，以确保预测结果的准确性</string>
 
+    <!-- AMSAT Status screen -->
+    <string name="pass_whatsnew_message">4.4.6 以来的全部更新（4.4.7 系列）：\n\n• 网格模式地图：LoTW 已确认网格绿色填充、漫游网格蓝色条纹、当前网格加粗框；右上角网格/卫星模式开关。\n\n• 首通呼号（VUCC 视图）：绿格显示该格最早通联的呼号，非绿格空白。\n\n• worked 网格可按操作网格筛选（含“全部”）；点击网格弹出 QSO 明细；每格 QSO 计数。\n\n• 各操作网格独立 VUCC 计数；极区网格标签；反经线修复；漫游条纹密度一致。\n\n• WAPC/WAJA 地图标签随系统语言。\n\n• 网格模式视口与筛选跨页保持。\n\n• LoTW 同步：账号直连、全量/增量模式、实时进度、可取消、启动自动同步（独立开关）、设置页显示上次同步时间。\n\n• 历史过境：过境筛选可回看过去数小时（历史过境时间）。\n\n• 指南针校准：8 字动作精度指示 + 手动航向偏置。\n\n• AMSAT 状态页：连续相同状态报告计数。\n\n• 过境/雷达：UTC 切换重算过境；日出日落与仰角颜色修复；卫星模糊搜索；相互过境页滚动保持、跟随 UTC、雷达快捷入口。\n\n• CW 解码器支持 32/64 位设备；Android 17 (API 37) 适配。</string>
+
+<string name="nav_amsat">AMSAT</string>
+    <string name="amsat_title">AMSAT 卫星状态</string>
+    <string name="amsat_refresh">刷新</string>
+    <string name="amsat_retry">重试</string>
+    <string name="amsat_updated">更新于：</string>
+    <string name="amsat_active">活跃</string>
+    <string name="amsat_tlm">遥测/信标</string>
+    <string name="amsat_not_heard">未听到</string>
+    <string name="amsat_conflict">冲突</string>
+    <string name="amsat_name">名称</string>
+    <string name="amsat_load_failed">加载失败 - 检查网络后重试</string>
+    <string name="amsat_no_reports">此时间段无报告</string>
+    <string name="amsat_close">关闭</string>
+    <string name="amsat_upload">上传</string>
+    <string name="amsat_upload_back">返回</string>
+    <string name="amsat_upload_report">上传报告到 AMSAT</string>
+    <string name="amsat_upload_status">状态</string>
+    <string name="amsat_upload_callsign">呼号</string>
+    <string name="amsat_upload_grid">网格</string>
+    <string name="amsat_upload_time_now">时间：当前 UTC %s</string>
+    <string name="amsat_upload_submit">提交到 AMSAT</string>
+    <string name="amsat_upload_confirm">确认上传</string>
+    <string name="amsat_upload_confirm_title">确认上传到 AMSAT</string>
+    <string name="amsat_upload_confirm_message">这条公开报告将上传到 AMSAT。\n卫星：%1$s\n状态：%2$s\n呼号：%3$s\n网格：%4$s</string>
+    <string name="amsat_upload_grid_none">未填写</string>
+    <string name="amsat_upload_success">报告已上传</string>
+    <string name="amsat_upload_failed">上传失败：%s</string>
+    <string name="amsat_upload_callsign_required">请填写呼号</string>
+    <string name="amsat_upload_grid_invalid">网格应为 4 或 6 位 Maidenhead 定位符</string>
+    <string name="amsat_upload_active">活跃</string>
+    <string name="amsat_upload_tlm">遥测/信标</string>
+    <string name="amsat_upload_not_heard">未听到</string>
+    <string name="amsat_upload_crew_active">ISS 语音</string>
+
     <!-- Radar screen -->
     <string name="radar_back">后退</string>
     <string name="radar_notify">通知</string>
@@ -60,13 +95,24 @@
     <string name="radar_string_no">否</string>
     <string name="radar_string_yes">是</string>
     <string name="radar_visible">日照中</string>
+
+    <string name="radar_doppler_calc">多普勒频率计算器</string>
     <string name="radar_doppler_tx_hint">输入上行频率 (MHz)</string>
     <string name="radar_doppler_rx_hint">输入下行频率 (MHz)</string>
     <string name="radar_doppler_offset_hint">偏移 (kHz)</string>
+    <string name="radar_doppler_info">线性转发器：输入一个频率即可算出另一个</string>
+
+    <string name="radar_cw_decoder">CW 解码器</string>
+    <string name="radar_cw_start">开始</string>
+    <string name="radar_cw_stop">停止</string>
+    <string name="radar_cw_reset">清空</string>
 
     <!-- Map screen -->
     <string name="map_prev">上一个</string>
     <string name="map_next">下一个</string>
+    <string name="map_grid_mode">网格模式</string>
+    <string name="map_satellite_mode">卫星模式</string>
+    <string name="map_first_call_mode">首通呼号</string>
     <string name="map_azimuth">方位角：%.1f°</string>
     <string name="map_elevation">仰角：%.1f°</string>
     <string name="map_altitude">高度：%.0f km</string>
@@ -78,6 +124,12 @@
     <string name="map_period">周期：% .0f min</string>
     <string name="map_velocity">速度：%.2f km/s</string>
     <string name="map_visibility">能见度：%s</string>
+    <!-- Worked-grid QSO dialog -->
+    <string name="grid_qso_calls_count" formatted="false">%d 个呼号 · %d 次通联</string>
+    <string name="grid_qso_count_one">%d QSO</string>
+    <string name="grid_qso_count_many">%d QSOs</string>
+    <string name="grid_qso_first">首通</string>
+    <string name="grid_qso_no_sat">卫星未知</string>
     <string name="map_visible">日照中</string>
 
     <!-- Settings screen -->
@@ -85,7 +137,7 @@
     <string name="prefs_privacy_title">隐私政策</string>
 
     <string name="prefs_updated_title">更新：%s</string>
-    <string name="prefs_updated_time">yyyy MMM d - HH:mm:ss</string>
+    <string name="prefs_updated_time">yyyy年M月d日 HH:mm:ss</string>
 
     <string name="prefs_loc_title">站点位置</string>
     <string name="prefs_loc_gps_title">GPS 定位</string>
@@ -95,11 +147,41 @@
     <string name="prefs_loc_qth_title">QTH 网格</string>
     <string name="prefs_loc_qth_error">无效的 QTH 网格</string>
     <string name="prefs_loc_success">位置更新成功</string>
-    <string name="prefs_station_title">站点位置</string>
-    <string name="prefs_station_lat_text">站点纬度</string>
-    <string name="prefs_station_lon_text">站点经度</string>
-    <string name="prefs_locator_title">QTH 定位</string>
-    <string name="prefs_locator_text">通过 QTH 设置站点位置</string>
+    <string name="prefs_station_title">站点位置设置</string>
+    <string name="prefs_station_lat_text">输入站点的纬度</string>
+    <string name="prefs_station_lon_text">输入站点的经度</string>
+    <string name="prefs_locator_title">QTH 网格</string>
+    <string name="prefs_wavelog_title">Wavelog 已通联网格</string>
+    <string name="prefs_wavelog_configure">配置</string>
+    <string name="prefs_wavelog_configured">已从 Wavelog 同步 — 通联 %1$d 个网格</string>
+    <string name="prefs_wavelog_not_configured">未配置 — 连接你的 Wavelog 日志以在地图上高亮已通联网格</string>
+    <string name="prefs_wavelog_url">Wavelog 地址</string>
+    <string name="prefs_wavelog_token">API key ：日志 ID</string>
+    <string name="prefs_wavelog_hint">已同步网格数：%1$d。格式：API key:日志ID。填好直接点同步，会自动保存并拉取。</string>
+    <string name="prefs_wavelog_sync">立即同步</string>
+    <string name="prefs_wavelog_syncing">同步中…</string>
+    <string name="prefs_lotw_title">LoTW 已确认网格</string>
+    <string name="prefs_lotw_callsign">LoTW 呼号</string>
+    <string name="prefs_lotw_password">LoTW 密码</string>
+    <string name="prefs_lotw_hint">直接从 ARRL LoTW 拉取该呼号已确认 QSO 的网格并覆盖本地已存集合（当前 %1$d 个）。密码仅保存在手机本地。点"同步"会自动保存凭据并拉取。</string>
+    <string name="prefs_lotw_sync">同步</string>
+    <string name="prefs_lotw_syncing">同步中…</string>
+    <string name="prefs_lotw_configured">已从 LoTW 同步 — 共 %1$d 个网格</string>
+    <string name="prefs_lotw_not_configured">未配置 — 直接登录 ARRL LoTW 拉取已确认 QSO 的网格，无需自建服务器</string>
+    <string name="lotw_sync_error_not_configured">LoTW 呼号/密码未配置</string>
+    <string name="lotw_sync_error_credentials">LoTW 同步失败——呼号或密码错误</string>
+    <string name="lotw_sync_error_rate_limited">LoTW 同步失败——服务器限流，请等几分钟后再试</string>
+    <string name="lotw_sync_error_timeout">LoTW 同步失败——连接超时，请更换网络重试</string>
+    <string name="lotw_sync_error_network">LoTW 同步失败——网络错误（%1$s）</string>
+    <string name="lotw_sync_full">全量同步</string>
+    <string name="lotw_sync_incremental">增量合并</string>
+    <string name="lotw_sync_rate_hint">下载速度约每 100 条 QSO 需 8 秒（另有 5–40 秒服务器生成时间）</string>
+    <string name="lotw_sync_progress_connecting">正在连接 LoTW 服务器…</string>
+    <string name="lotw_sync_progress_downloading">正在下载报告…</string>
+    <string name="lotw_sync_progress_saving">正在处理下载的数据…</string>
+    <string name="lotw_sync_progress_count">本次同步 %1$d 条 QSO…</string>
+    <string name="lotw_sync_progress_qso">本次同步 %1$d 条 QSO，预计还需 %2$d 秒</string>
+    <string name="prefs_locator_text">使用梅登黑德网格设置站点位置</string>
 
     <string name="prefs_data_title">卫星数据更新</string>
     <string name="prefs_data_entries">卫星：%s</string>
@@ -109,37 +191,34 @@
     <string name="prefs_data_clear">清空</string>
     <string name="prefs_data_clear_success">数据清空成功</string>
     <string name="prefs_data_update_success">更新成功</string>
+
     <string name="prefs_data_import_satellites_error">未导入卫星。请选择有效的 TLE/3LE (.txt) 或 OMM (.csv) 文件。</string>
     <string name="prefs_data_import_transceivers_error">未导入收发器。请选择有效的 SatNOGS (.json) 文件。</string>
 
-    <string name="prefs_data_sources_title">自定义源</string>
-    <string name="prefs_data_sources_tle_switch">TLE URL</string>
-    <string name="prefs_data_sources_transceivers_switch">收发器 URL</string>
-    <string name="prefs_data_sources_url_title" translatable="false">URL (HTTPS)</string>
+    <string name="prefs_data_sources_title">自定义数据源</string>
+    <string name="prefs_data_sources_restore">恢复默认数据源</string>
+    <string name="prefs_data_sources_tle_switch">自定义TLE URL</string>
+    <string name="prefs_data_sources_transceivers_switch">自定义收发器URL</string>
+    <string name="prefs_data_sources_url_title" translatable="false">URL</string>
+    <string name="prefs_data_sources_satellites_label">卫星数据</string>
+    <string name="prefs_data_sources_transceivers_label">收发器数据</string>
 
     <string name="prefs_data_output_title">数据输出</string>
     <string name="prefs_net_output">网络</string>
     <string name="prefs_bt_output">蓝牙</string>
     <string name="prefs_cat_output">CAT</string>
 
-    <string name="nav_radiocontrol">电台控制</string>
-    <string name="rc_settings_title">CAT 控制</string>
-    <string name="rc_radio_model">电台型号</string>
-    <string name="rc_tx_device_hint">TX 电台蓝牙地址</string>
-    <string name="rc_rx_device_hint">RX 电台蓝牙地址</string>
-    <string name="rc_tx_name_hint">TX 电台名称</string>
-    <string name="rc_rx_name_hint">RX 电台名称</string>
-    <string name="rc_enable_switch">启用 CAT</string>
-
-    <string name="prefs_net_title">网络输出</string>
+    <string name="prefs_net_title">网络数据输出</string>
     <string name="prefs_net_rotator_switch">启用方位俯仰角输出</string>
     <string name="prefs_net_rotator_address_hint">IP:端口</string>
     <string name="prefs_net_rotator_format_hint">数据格式</string>
     <string name="prefs_net_frequency_switch">启用多普勒频率输出</string>
     <string name="prefs_net_frequency_address_hint">IP:端口</string>
     <string name="prefs_net_frequency_format_hint">数据格式</string>
+    <string name="prefs_net_frequency_offset_hint" translatable="false">频率偏移 (Hz)</string>
+    <string name="prefs_net_frequency_offset_help" translatable="false">范围：-50000 到 50000 Hz。正值提高上报频率，负值降低上报频率。</string>
 
-    <string name="prefs_bt_title">蓝牙输出</string>
+    <string name="prefs_bt_title">蓝牙数据输出</string>
     <string name="prefs_bt_rotator_switch">启用方位俯仰角输出</string>
     <string name="prefs_bt_rotator_device_hint">蓝牙设备 ID</string>
     <string name="prefs_bt_rotator_output_hint">数据格式</string>
@@ -149,14 +228,37 @@
     <string name="prefs_bt_perm_error">请检查蓝牙权限</string>
     <string name="prefs_net_perm_error">请检查网络权限</string>
 
-    <string name="prefs_other_title">其他</string>
-    <string name="prefs_other_switch_utc">UTC 时间</string>
-    <string name="prefs_other_switch_update">自动更新数据</string>
-    <string name="prefs_other_switch_sweep">雷达扫描动画</string>
-    <string name="prefs_other_switch_sensors">传感器控制雷达</string>
-    <string name="prefs_other_switch_night_mode">红色夜间模式</string>
-    <string name="prefs_other_compass_offset">雷达罗盘水平偏移量</string>
-    <string name="prefs_other_compass_offset_elev">雷达罗盘俯仰偏移量</string>
+    <!-- Radio Control -->
+    <string name="nav_radiocontrol">电台控制</string>
+    <string name="rc_settings_title">CAT 电台控制</string>
+    <string name="rc_radio_model">电台型号</string>
+    <string name="rc_tx_device_hint">发射电台蓝牙地址</string>
+    <string name="rc_rx_device_hint">接收电台蓝牙地址</string>
+    <string name="rc_tx_name_hint">发射电台名称</string>
+    <string name="rc_rx_name_hint">接收电台名称</string>
+    <string name="rc_enable_switch">启用 CAT 控制</string>
+
+    <string name="prefs_other_title">其他设置</string>
+    <string name="prefs_other_switch_utc">以 UTC 时间显示</string>
+    <string name="prefs_other_switch_update">启用卫星数据自动更新</string>
+    <string name="prefs_other_switch_lotw_sync">自动同步 LoTW 已确认网格</string>
+    <string name="prefs_other_switch_sweep">启用雷达扫描动画</string>
+    <string name="prefs_other_switch_sensors">使用传感器旋转雷达视图</string>
+    <string name="prefs_compass_calibration_button">校准指南针</string>
+    <string name="prefs_compass_calibration_title">指南针校准</string>
+    <string name="prefs_compass_calibration_instruction">缓慢移动手机画“8”字，直到精度提高。请远离磁铁和金属物体。</string>
+    <string name="prefs_compass_accuracy">精度：%s</string>
+    <string name="prefs_compass_accuracy_high">高——校准完成</string>
+    <string name="prefs_compass_accuracy_medium">中——请继续移动</string>
+    <string name="prefs_compass_accuracy_low">低——请继续移动</string>
+    <string name="prefs_compass_accuracy_unreliable">不可靠——请开始“8”字动作</string>
+    <string name="prefs_compass_accuracy_unavailable">设备没有可用的磁场传感器</string>
+    <string name="prefs_compass_heading">校正后航向：%.1f°</string>
+    <string name="prefs_compass_offset">手动航向偏置（°）</string>
+    <string name="prefs_compass_offset_support">范围 −180° 至 +180°；正值为顺时针偏移。</string>
+    <string name="prefs_compass_offset_reset">偏置归零</string>
+    <string name="prefs_other_switch_night_mode">启用红色夜间模式</string>
+    <string name="prefs_other_switch_map_grid">地图显示 Maidenhead 网格</string>
 
     <string name="prefs_highlight_title">仰角高亮</string>
     <string name="prefs_highlight_low">低 &lt; %1$d°</string>
@@ -170,7 +272,53 @@
         \n• Dave Moten (predict4java)
         \n• Alexandru Csete (Gpredict)
         \n• Dr T.S. Kelso (Celestrak)
-        \n• Libre Space Foundation (SatNOGS)</string>
+        \n• Libre Space Foundation (SatNOGS)
+        \n• xdsopl 和 Robot36 贡献者!
+        \n• BG7NTA BG5JSU（CW解码功能）</string>
     <string name="prefs_outro_license">该应用程序不提供任何保修.</string>
 
+    <!-- 匹配页 Mutual match page -->
+    <string name="mutual_title">过境匹配</string>
+    <string name="mutual_station_you">你的位置</string>
+    <string name="mutual_station_opposite">友台位置</string>
+    <string name="mutual_label_you">你</string>
+    <string name="mutual_label_opposite">友台</string>
+    <string name="mutual_status_calculating">正在计算双方共同可见窗口…</string>
+    <string name="mutual_status_error">请修正提示后重新查询</string>
+    <string name="mutual_status_matches">找到 %d 个匹配 · 点击卡片展开曲线</string>
+    <string name="mutual_status_none">未找到共同可见窗口，调整时间或仰角后重试</string>
+    <string name="mutual_status_idle">输入双方位置后点击查询</string>
+    <string name="mutual_chip_calculating">计算中</string>
+    <string name="mutual_chip_error">有错误</string>
+    <string name="mutual_chip_matches">%d 个匹配</string>
+    <string name="mutual_chip_none">无匹配</string>
+    <string name="mutual_chip_idle">待查询</string>
+    <string name="mutual_use_current">填入当前位置</string>
+    <string name="mutual_lat">纬度</string>
+    <string name="mutual_lon">经度</string>
+    <string name="mutual_grid">网格</string>
+    <string name="mutual_grid_hint">支持 4/6/8 位 Maidenhead 网格；也可直接输入经纬度</string>
+    <string name="mutual_min_elevation">最小仰角：%d°</string>
+    <string name="mutual_time_range">时间范围</string>
+    <string name="mutual_calculating">计算中…</string>
+    <string name="mutual_query">查询匹配</string>
+    <string name="mutual_elevation_you">你：%d°</string>
+    <string name="mutual_elevation_opposite">友台：%d°</string>
+    <string name="mutual_both_tracks">双方轨迹</string>
+    <string name="mutual_open_radar">查看雷达</string>
+    <string name="mutual_station_a">站点A</string>
+    <string name="mutual_station_b">站点B</string>
+    <string name="update_check_title">检查更新</string>
+    <string name="update_check_button">检查更新</string>
+    <string name="update_check_current">当前版本：%s</string>
+    <string name="update_check_latest">最新版本：%s</string>
+    <string name="update_check_up_to_date">已是最新版本</string>
+    <string name="update_check_available">发现新版本</string>
+    <string name="update_check_release_notes">更新内容</string>
+    <string name="update_check_download">下载并安装</string>
+    <string name="update_check_downloading">正在下载…</string>
+    <string name="update_check_error">检查更新失败，请检查网络连接。</string>
+    <string name="update_check_download_error">下载失败，请重试。</string>
+    <string name="update_check_no_apk">该版本未附带 APK 安装包。</string>
+
 </resources>

core/presentation/src/main/res/values/strings.xml

@@ -10,38 +10,35 @@
     <string name="nav_sat">Satellites</string>
     <string name="nav_pass">Passes</string>
     <string name="nav_radar">Radar</string>
+    <string name="nav_mutual">Match</string>
     <string name="nav_map">Map</string>
     <string name="nav_prefs">Settings</string>
-    <string name="nav_status" translatable="false">AMSAT</string>
 
     <!-- Satellites screen -->
-    <string name="sat_type_hint">Modes: %s</string>
-    <string name="sat_type_title">Select modes</string>
+    <string name="sat_type_hint">Type: %s</string>
+    <string name="sat_type_title">Select satellite type</string>
     <string name="sat_search_hint">Id - Name</string>
     <string name="sat_search_clear">Clear</string>
     <string name="sat_clear_all">Clear all</string>
     <string name="sat_select_all">Select all</string>
-    <string name="sat_group_selected">Selected</string>
-    <string name="sat_group_available">Available</string>
-    <string name="sat_group_selected_count">Selected (%1$d)</string>
-    <string name="sat_group_available_count">Available (%1$d)</string>
     <string name="sat_empty_list_message">"Make sure your search query is correct and the DB is updated"</string>
     <string name="sat_warning_title">Warning\!</string>
     <string name="sat_warning_message">
         There are over 9000 satellites listed in this app.
         It makes no sense to track them all at the same time.
         \n\nAlways try to narrow down the list to only the ones
-        you\'re interested in via search and the modes selector.</string>
+        you\'re interested in via search and types selector.</string>
 
     <!-- Passes screen -->
     <string name="pass_filter_title">Filter passes</string>
     <string name="pass_filter_elev">Minimal elevation</string>
     <string name="pass_filter_hours">Time ahead</string>
+    <string name="pass_filter_history_hours">Time before</string>
     <string name="pass_filter_aos_time">AOS window</string>
     <string name="pass_filter_invert_time">Invert AOS window</string>
     <string name="pass_filter_deep_space">DeepSpace (period >225min)</string>
     <string name="pass_time_placeholder" translatable="false"> -- : -- : -- </string>
-    <string name="pass_modes_title">Select modes</string>
+    <string name="pass_modes_title">Select modulation type</string>
     <string name="pass_satId" translatable="false">%05d</string>
     <string name="pass_elevation">Elevation: %.1f°</string>
     <string name="pass_deep_space" translatable="false">DeepSpace</string>
@@ -55,15 +52,7 @@
         Make sure to set your position via GPS, Lat/Lon or QTH in Settings.
         \n\nPlease update the database at least weekly to get accurate predictions.</string>
     <string name="pass_whatsnew_title" translatable="false">What\'s new in Look4Sat</string>
-    <string name="pass_whatsnew_message" translatable="false">
-        * Added AMSAT status tracking page by MCKero6423 (#234)
-        \n* Tweaked Radar track on reposition by atsunatsu (#235)
-        \n* Tweaked linear transponder calc by atsunatsu (#236)
-        \n* Added saving per-sat doppler offset by atsunatsu (#237)
-        \n* Added custom freq offset setting to network reporting
-        \n* Added ability to customize data sources via import
-        \n* Fixed star chart in README by PingouinFerreux (#240)
-    </string>
+    <string name="pass_whatsnew_message">All changes since 4.4.6 (the 4.4.7 series):\n\n• Grid-mode map: LoTW confirmed grids in green, roamed grids with blue stripes, current grid highlighted; mode switch pill at the map\'s top-right.\n\n• First-call labels (VUCC view): show the first callsign worked in each green grid instead of the grid code; non-worked cells stay empty.\n\n• Worked grids filtered by operated grid (with an All option); tap a grid to see its QSO detail dialog; per-grid QSO counts.\n\n• Per-operated-grid VUCC counting; polar grid labels; antimeridian fixes; consistent roamed-stripe density.\n\n• WAPC/WAJA map labels follow the system language.\n\n• Grid-mode viewport and award filter survive page switches.\n\n• LoTW sync: direct login, full/incremental modes, live progress, cancel button, auto-sync on app start with its own toggle, last-sync time shown.\n\n• Pass history: filter can look back over past passes (Time before).\n\n• Compass calibration: figure-eight accuracy meter plus manual heading offset.\n\n• AMSAT status page: consecutive same-status report counts.\n\n• Passes/radar: UTC toggle recalculates passes; sunrise/sunset and elevation color fixes; satellite fuzzy search; mutual page keeps scroll, follows UTC, radar shortcut.\n\n• CW decoder for 32/64-bit devices; Android 17 (API 37) support.</string>
 
     <!-- AMSAT Status screen -->
     <string name="nav_amsat">AMSAT</string>
@@ -79,6 +68,26 @@
     <string name="amsat_load_failed">Load failed - check network and retry</string>
     <string name="amsat_no_reports">No reports for this period</string>
     <string name="amsat_close">Close</string>
+    <string name="amsat_upload">Upload</string>
+    <string name="amsat_upload_back">Back</string>
+    <string name="amsat_upload_report">Upload report to AMSAT</string>
+    <string name="amsat_upload_status">Status</string>
+    <string name="amsat_upload_callsign">Callsign</string>
+    <string name="amsat_upload_grid">Grid</string>
+    <string name="amsat_upload_time_now">Time: current UTC %s</string>
+    <string name="amsat_upload_submit">Submit to AMSAT</string>
+    <string name="amsat_upload_confirm">Upload</string>
+    <string name="amsat_upload_confirm_title">Confirm AMSAT upload</string>
+    <string name="amsat_upload_confirm_message">This public report will be uploaded to AMSAT.\nSatellite: %1$s\nStatus: %2$s\nCallsign: %3$s\nGrid: %4$s</string>
+    <string name="amsat_upload_grid_none">Not provided</string>
+    <string name="amsat_upload_success">Report uploaded</string>
+    <string name="amsat_upload_failed">Upload failed: %s</string>
+    <string name="amsat_upload_callsign_required">Callsign is required</string>
+    <string name="amsat_upload_grid_invalid">Grid must be a 4 or 6 character Maidenhead locator</string>
+    <string name="amsat_upload_active">Active</string>
+    <string name="amsat_upload_tlm">TLM/Beacon</string>
+    <string name="amsat_upload_not_heard">Not Heard</string>
+    <string name="amsat_upload_crew_active">Crew Active</string>
 
     <!-- Radar screen -->
     <string name="radar_back">Back</string>
@@ -105,14 +114,24 @@
     <string name="radar_string_no">No</string>
     <string name="radar_string_yes">Yes</string>
     <string name="radar_visible">Visible</string>
+    <string name="radar_doppler_calc">Doppler Frequency Calculator</string>
     <string name="radar_doppler_tx_hint">Enter TX freq (MHz)</string>
     <string name="radar_doppler_rx_hint">Enter RX freq (MHz)</string>
     <string name="radar_doppler_offset_hint">Offset (kHz)</string>
+    <string name="radar_doppler_info">For linear transponders, type one frequency to see the other</string>
+
+    <string name="radar_cw_decoder">CW Decoder</string>
+    <string name="radar_cw_start">Start</string>
+    <string name="radar_cw_stop">Stop</string>
+    <string name="radar_cw_reset">Clear</string>
 
     <!-- Map screen -->
     <string name="map_prev">Prev</string>
     <string name="map_next">Next</string>
     <string name="map_copyright" translatable="false">© OpenStreetMap contributors</string>
+    <string name="map_grid_mode">Grid mode</string>
+    <string name="map_satellite_mode">Satellite mode</string>
+    <string name="map_first_call_mode">First call</string>
     <string name="map_azimuth">Azimuth: %.1f°</string>
     <string name="map_elevation">Elevation: %.1f°</string>
     <string name="map_altitude">Altitude: %.0f km</string>
@@ -125,6 +144,12 @@
     <string name="map_period">Period: %.0f min</string>
     <string name="map_velocity">Velocity: %.2f km/s</string>
     <string name="map_visibility">Visibility: %s</string>
+    <!-- Worked-grid QSO dialog -->
+    <string name="grid_qso_calls_count" formatted="false">%d callsigns · %d QSOs</string>
+    <string name="grid_qso_count_one">%d QSO</string>
+    <string name="grid_qso_count_many">%d QSOs</string>
+    <string name="grid_qso_first">First</string>
+    <string name="grid_qso_no_sat">satellite unknown</string>
     <string name="map_visible">Visible</string>
 
     <!-- Settings screen -->
@@ -152,11 +177,41 @@
     <string name="prefs_loc_qth_title">QTH</string>
     <string name="prefs_loc_qth_error">Invalid QTH locator</string>
     <string name="prefs_loc_success">Position updated successfully</string>
-    <string name="prefs_station_title">Station position</string>
-    <string name="prefs_station_lat_text">Station latitude</string>
-    <string name="prefs_station_lon_text">Station longitude</string>
-    <string name="prefs_locator_title">QTH locator</string>
-    <string name="prefs_locator_text">Set position via locator</string>
+    <string name="prefs_station_title">Station position settings</string>
+    <string name="prefs_station_lat_text">Set your ground station\'s latitude</string>
+    <string name="prefs_station_lon_text">Set your ground station\'s longitude</string>
+    <string name="prefs_locator_title">QTH locator settings</string>
+    <string name="prefs_wavelog_title">Wavelog worked grids</string>
+    <string name="prefs_wavelog_configure">Configure</string>
+    <string name="prefs_wavelog_configured">Synced from Wavelog — %1$d grids worked</string>
+    <string name="prefs_wavelog_not_configured">Not configured — connect your Wavelog logbook to highlight worked grids on the map</string>
+    <string name="prefs_wavelog_url">Wavelog URL</string>
+    <string name="prefs_wavelog_token">API key : logbook ID</string>
+    <string name="prefs_wavelog_hint">Worked grids synced: %1$d. Format: API key, colon, logbook ID. Just tap Sync — credentials are saved automatically.</string>
+    <string name="prefs_wavelog_sync">Sync now</string>
+    <string name="prefs_wavelog_syncing">Syncing…</string>
+    <string name="prefs_lotw_title">LoTW confirmed grids</string>
+    <string name="prefs_lotw_callsign">LoTW callsign</string>
+    <string name="prefs_lotw_password">LoTW password</string>
+    <string name="prefs_lotw_hint">Fetch confirmed-QSO grids directly from ARRL LoTW for this callsign and replace the stored set (currently %1$d). The password is stored on this device only. Tapping Sync saves the credentials and fetches in one step.</string>
+    <string name="prefs_lotw_sync">Sync</string>
+    <string name="prefs_lotw_syncing">Syncing…</string>
+    <string name="prefs_lotw_configured">Synced from LoTW — %1$d grids total</string>
+    <string name="prefs_lotw_not_configured">Not configured — pull confirmed grids directly from ARRL LoTW, no self-hosted server needed</string>
+    <string name="lotw_sync_error_not_configured">LoTW callsign/password not configured</string>
+    <string name="lotw_sync_error_credentials">LoTW sync failed — callsign or password incorrect</string>
+    <string name="lotw_sync_error_rate_limited">LoTW sync failed — rate limited by server, wait a few minutes and retry</string>
+    <string name="lotw_sync_error_timeout">LoTW sync failed — connection timed out, try another network</string>
+    <string name="lotw_sync_error_network">LoTW sync failed — network error (%1$s)</string>
+    <string name="lotw_sync_full">Full sync</string>
+    <string name="lotw_sync_incremental">Incremental merge</string>
+    <string name="lotw_sync_rate_hint">Download runs at ~8 s per 100 QSOs (plus 5–40 s server generation time)</string>
+    <string name="lotw_sync_progress_connecting">Connecting to LoTW…</string>
+    <string name="lotw_sync_progress_downloading">Downloading report…</string>
+    <string name="lotw_sync_progress_saving">Processing downloaded data…</string>
+    <string name="lotw_sync_progress_count">Syncing %1$d QSOs…</string>
+    <string name="lotw_sync_progress_qso">Syncing %1$d QSOs, ~%2$d s remaining</string>
+    <string name="prefs_locator_text">Set station\'s position using locator</string>
 
     <string name="prefs_data_title">Satellite data</string>
     <string name="prefs_data_entries">Satellites: %s</string>
@@ -169,7 +224,13 @@
     <string name="prefs_data_import_satellites_error">No satellites imported. Select a valid TLE/3LE (.txt) or OMM (.csv) file.</string>
     <string name="prefs_data_import_transceivers_error">No transceivers imported. Select a valid SatNOGS (.json) file.</string>
 
-    <string name="prefs_data_sources_title">Data sources</string>
+    <string name="prefs_data_sources_title">Custom data sources</string>
+    <string name="prefs_data_sources_restore">Restore default sources</string>
+    <string name="prefs_data_sources_tle_switch">Custom TLE URL</string>
+    <string name="prefs_data_sources_transceivers_switch">Custom transceivers URL</string>
+    <string name="prefs_data_sources_url_title" translatable="false">URL (HTTPS)</string>
+    <string name="prefs_data_sources_satellites_label">Satellites data</string>
+    <string name="prefs_data_sources_transceivers_label">Transceivers data</string>
 
     <string name="prefs_data_output_title">Data output</string>
     <string name="prefs_net_output">Network</string>
@@ -178,15 +239,15 @@
 
     <!-- Radio Control -->
     <string name="nav_radiocontrol">Radio Control</string>
-    <string name="rc_settings_title">CAT control</string>
+    <string name="rc_settings_title">CAT Radio Control</string>
     <string name="rc_radio_model">Radio Model</string>
-    <string name="rc_tx_device_hint">TX BT address</string>
-    <string name="rc_rx_device_hint">RX BT address</string>
+    <string name="rc_tx_device_hint">TX Radio BT Address</string>
+    <string name="rc_rx_device_hint">RX Radio BT Address</string>
     <string name="rc_tx_name_hint">TX Radio Name</string>
     <string name="rc_rx_name_hint">RX Radio Name</string>
-    <string name="rc_enable_switch">Enable CAT</string>
+    <string name="rc_enable_switch">Enable CAT Control</string>
 
-    <string name="prefs_net_title">Network output</string>
+    <string name="prefs_net_title">Network data output</string>
     <string name="prefs_net_rotator_switch">Enable rotation output</string>
     <string name="prefs_net_rotator_address_hint">IP:Port</string>
     <string name="prefs_net_rotator_format_hint">Format</string>
@@ -196,24 +257,37 @@
     <string name="prefs_net_frequency_offset_hint" translatable="false">Frequency offset (Hz)</string>
     <string name="prefs_net_frequency_offset_help" translatable="false">Range: -50000 to 50000 Hz. Positive values increase reported frequency; negative values decrease it.</string>
 
-    <string name="prefs_bt_title">Bluetooth output</string>
+    <string name="prefs_bt_title">Bluetooth data output</string>
     <string name="prefs_bt_rotator_switch">Enable rotation output</string>
-    <string name="prefs_bt_rotator_device_hint">Device ID</string>
-    <string name="prefs_bt_rotator_output_hint">Format</string>
+    <string name="prefs_bt_rotator_device_hint">Device id</string>
+    <string name="prefs_bt_rotator_output_hint">Data format</string>
     <string name="prefs_bt_frequency_switch">Enable frequency output</string>
-    <string name="prefs_bt_frequency_device_hint">Device ID</string>
-    <string name="prefs_bt_frequency_output_hint">Format</string>
+    <string name="prefs_bt_frequency_device_hint">Device id</string>
+    <string name="prefs_bt_frequency_output_hint">Data format</string>
     <string name="prefs_bt_perm_error">Check your bluetooth permission</string>
     <string name="prefs_net_perm_error">Check your network permission</string>
 
-    <string name="prefs_other_title">Other</string>
-    <string name="prefs_other_switch_utc">UTC time</string>
-    <string name="prefs_other_switch_update">Auto-update data</string>
-    <string name="prefs_other_switch_sweep">Radar sweep</string>
-    <string name="prefs_other_switch_sensors">Use sensors</string>
-    <string name="prefs_other_switch_night_mode">Night filter</string>
-    <string name="prefs_other_compass_offset">Radar compass offset</string>
-    <string name="prefs_other_compass_offset_elev">Radar compass offset (elev)</string>
+    <string name="prefs_other_title">Other settings</string>
+    <string name="prefs_other_switch_utc">Show pass time in UTC</string>
+    <string name="prefs_other_switch_update">Enable automatic data update</string>
+    <string name="prefs_other_switch_lotw_sync">Auto-sync LoTW confirmed grids</string>
+    <string name="prefs_other_switch_sweep">Enable radar sweep animation</string>
+    <string name="prefs_other_switch_sensors">Use sensors to rotate radar view</string>
+    <string name="prefs_compass_calibration_button">Calibrate compass</string>
+    <string name="prefs_compass_calibration_title">Compass calibration</string>
+    <string name="prefs_compass_calibration_instruction">Move the phone slowly in a figure-eight until accuracy improves. Keep it away from magnets and metal.</string>
+    <string name="prefs_compass_accuracy">Accuracy: %s</string>
+    <string name="prefs_compass_accuracy_high">High — calibration complete</string>
+    <string name="prefs_compass_accuracy_medium">Medium — keep moving</string>
+    <string name="prefs_compass_accuracy_low">Low — keep moving</string>
+    <string name="prefs_compass_accuracy_unreliable">Unreliable — start the figure-eight motion</string>
+    <string name="prefs_compass_accuracy_unavailable">Magnetic sensor unavailable</string>
+    <string name="prefs_compass_heading">Corrected heading: %.1f°</string>
+    <string name="prefs_compass_offset">Manual heading offset (°)</string>
+    <string name="prefs_compass_offset_support">Range −180° to +180°. Positive values rotate clockwise.</string>
+    <string name="prefs_compass_offset_reset">Reset offset</string>
+    <string name="prefs_other_switch_night_mode">Enable red night mode filter</string>
+    <string name="prefs_other_switch_map_grid">Show Maidenhead grid on map</string>
 
     <string name="prefs_highlight_title">Elevation highlight</string>
     <string name="prefs_highlight_low">Low &lt; %1$d°</string>
@@ -229,7 +303,52 @@
         \n* Dr T.S. Kelso (Celestrak)
         \n* Libre Space Foundation (SatNOGS)
         \n* xdsopl and Robot36 contributors!
+        \n* BG7NTA BG5JSU (CW decoding feature)
     </string>
     <string name="prefs_outro_license">The app comes with no warranty</string>
 
+    <!-- Mutual match page -->
+    <string name="mutual_title">Pass Match</string>
+    <string name="mutual_station_you">Your Station</string>
+    <string name="mutual_station_opposite">Opposite Station</string>
+    <string name="mutual_label_you">You</string>
+    <string name="mutual_label_opposite">Opposite</string>
+    <string name="mutual_status_calculating">Calculating mutual visibility windows…</string>
+    <string name="mutual_status_error">Fix the reported issues and retry</string>
+    <string name="mutual_status_matches">%d matches found · tap a card to expand</string>
+    <string name="mutual_status_none">No mutual windows found. Adjust time or min elevation and retry</string>
+    <string name="mutual_status_idle">Enter both stations, then tap Query</string>
+    <string name="mutual_chip_calculating">Calculating</string>
+    <string name="mutual_chip_error">Error</string>
+    <string name="mutual_chip_matches">%d matches</string>
+    <string name="mutual_chip_none">No matches</string>
+    <string name="mutual_chip_idle">Idle</string>
+    <string name="mutual_use_current">Use current</string>
+    <string name="mutual_lat">Lat</string>
+    <string name="mutual_lon">Lon</string>
+    <string name="mutual_grid">Grid</string>
+    <string name="mutual_grid_hint">Supports 4/6/8-char Maidenhead grid; or enter lat/lon directly</string>
+    <string name="mutual_min_elevation">Min elevation: %d°</string>
+    <string name="mutual_time_range">Time range</string>
+    <string name="mutual_calculating">Calculating…</string>
+    <string name="mutual_query">Query Match</string>
+    <string name="mutual_elevation_you">You: %d°</string>
+    <string name="mutual_elevation_opposite">Opposite: %d°</string>
+    <string name="mutual_both_tracks">Both tracks</string>
+    <string name="mutual_open_radar">Open Radar</string>
+    <string name="mutual_station_a">Station A</string>
+    <string name="mutual_station_b">Station B</string>
+    <string name="update_check_title">Check for updates</string>
+    <string name="update_check_button">Check for updates</string>
+    <string name="update_check_current">Current version: %s</string>
+    <string name="update_check_latest">Latest version: %s</string>
+    <string name="update_check_up_to_date">You are up to date</string>
+    <string name="update_check_available">New version available</string>
+    <string name="update_check_release_notes">Release notes</string>
+    <string name="update_check_download">Download &amp; install</string>
+    <string name="update_check_downloading">Downloading…</string>
+    <string name="update_check_error">Failed to check for updates. Check your connection.</string>
+    <string name="update_check_download_error">Download failed. Try again.</string>
+    <string name="update_check_no_apk">No APK attached to this release.</string>
+
 </resources>

fastlane/metadata/android/en-US/changelogs/default.txt

@@ -1,7 +1,2 @@
-* Added AMSAT status tracking page by MCKero6423 (#234)
-* Tweaked Radar track on reposition by atsunatsu (#235)
-* Tweaked linear transponder calc by atsunatsu (#236)
-* Added saving per-sat doppler offset by atsunatsu (#237)
-* Added custom freq offset setting to network reporting
-* Added ability to customize data sources via import
-* Fixed star chart in README by PingouinFerreux (#240)
+* Added required tweaks to support Android 17 (API 37)
+* Added ACCESS_LOCAL_NETWORK permission check to support network data output

feature/cw/build.gradle.kts

@@ -0,0 +1,39 @@
+import com.android.build.api.dsl.LibraryExtension
+import com.android.build.api.variant.CanProduceConsumerProguardFiles
+
+plugins {
+    alias(libs.plugins.convention.featurePlugin)
+}
+
+android {
+    namespace = "com.rtbishop.look4sat.feature.cw"
+    compileOptions {
+        encoding = "UTF-8"
+    }
+    // Morse Expert 1.15 官方 Play 分包提供 ARM32/ARM64 原生解码器
+    // (jniLibs/armeabi-v7a + arm64-v8a), 两个 ABI 都打进 APK
+    defaultConfig {
+        ndk {
+            abiFilters += listOf("armeabi-v7a", "arm64-v8a")
+        }
+    }
+}
+
+// CW 类保持规则(JNI 按类名注册 + 照搬混淆类保逻辑), 由 app 的 R8 消费
+// AGP 9: consumer 规则走 variant 级 CanProduceConsumerProguardFiles
+androidComponents {
+    onVariants(selector().all()) { variant ->
+        (variant as? CanProduceConsumerProguardFiles)?.consumerProguardFiles?.add(
+            project.layout.projectDirectory.file("proguard-rules.pro")
+        )
+    }
+}
+
+dependencies {
+    implementation("androidx.constraintlayout:constraintlayout:2.2.1")
+}
+
+// 照搬的 Java 源码含中文注释, 强制 UTF-8 编译(compileOptions 在部分 AGP 版本不生效)
+tasks.withType<JavaCompile>().configureEach {
+    options.encoding = "UTF-8"
+}