release: v4.4.6-ba7opf.9.3

Passwords for the release keystore were committed in plaintext to a
public repo. Move them to gitignored local.properties with an
environment-variable fallback. Keystore file itself stays in $HOME.

.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 +1,38 @@
-# 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>
+- **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
+- **Passband 模式** — 支持通过位置滑块（Passband）自动计算 TX/RX 频率，避免切换时跳变
+- **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
+- **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 +1,36 @@
+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"
+        ndk { abiFilters.add("armeabi-v7a") }
+    }
+    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

@@ -17,7 +17,10 @@
  */
 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
@@ -35,12 +38,37 @@ class MainApplication : Application(), IContainerProvider {
     override fun onCreate() {
         super.onCreate()
         container = MainContainer(this)
+        clearAmSatCacheOnAppBackground()
         // trigger automatic update every 48 hours
         container.appScope.launch { checkAutoUpdate() }
         // 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

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

@@ -51,6 +51,9 @@ import androidx.compose.runtime.Composable
 import androidx.compose.runtime.CompositionLocalProvider
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableIntStateOf
+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 +64,16 @@ 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 +82,8 @@ 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.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
@@ -87,11 +94,16 @@ import com.rtbishop.look4sat.feature.status.SatStatusDestination
 fun NavRoot(deeplink: String? = null) {
     val rootBackStack = rememberNavBackStack(Screen.Passes)
     val deeplinkResolver = DeeplinkResolver()
+    var openMapRequest by remember { mutableIntStateOf(0) }
     LaunchedEffect(deeplink) {
         deeplink?.let { rootBackStack.add(deeplinkResolver.resolve(it)) }
     }
     val navigateBack: () -> Unit = { rootBackStack.removeLastOrNull() }
     val navigateToRadar: () -> Unit = { rootBackStack.add(RadarDestination) }
+    val navigateToMap: () -> Unit = {
+        while (rootBackStack.size > 1) rootBackStack.removeAt(rootBackStack.size - 1)
+        openMapRequest += 1
+    }
     // Incoming screen slides in from the right, outgoing drifts left at 1/3 speed (API35+ style)
     val pushTransition = slideInHorizontally(tween(300)) { it } togetherWith
         slideOutHorizontally(tween(300)) { -it / 3 }
@@ -110,13 +122,19 @@ fun NavRoot(deeplink: String? = null) {
             rememberViewModelStoreNavEntryDecorator()
         ),
         entryProvider = entryProvider {
-            entry<Screen.Passes> { MainScreen(navigateToRadar = navigateToRadar) }
+            entry<Screen.Passes> {
+                MainScreen(
+                    navigateToRadar = navigateToRadar,
+                    openMapRequest = openMapRequest,
+                    onOpenMapRequestHandled = { openMapRequest = 0 }
+                )
+            }
             entry<RadarDestination> {
                 Surface(
                     modifier = Modifier.fillMaxSize(),
                     color = MaterialTheme.colorScheme.background
                 ) {
-                    RadarDestination(navigateUp = navigateBack)
+                    RadarDestination(navigateUp = navigateBack, navigateToMap = navigateToMap)
                 }
             }
         }
@@ -124,19 +142,36 @@ fun NavRoot(deeplink: String? = null) {
 }
 
 @Composable
-private fun MainScreen(navigateToRadar: () -> Unit = {}) {
+fun MainScreen(
+    navigateToRadar: () -> Unit = {},
+    openMapRequest: Int = 0,
+    onOpenMapRequestHandled: () -> Unit = {}
+) {
+    val backStack = rememberNavBackStack(Screen.Passes)
+    val currentKey = backStack.lastOrNull()
+    val navigateBack: () -> Unit = { backStack.removeLastOrNull() }
+    val navigateToMap: () -> Unit = {
+        while (backStack.size > 1) backStack.removeAt(backStack.size - 1)
+        backStack.add(Screen.Map)
+    }
+    LaunchedEffect(openMapRequest) {
+        if (openMapRequest > 0) {
+            navigateToMap()
+            onOpenMapRequestHandled()
+        }
+    }
+    val fadeTransition = fadeIn(animationSpec = tween(350)) togetherWith fadeOut(animationSpec = tween(350))
+    val navItems = listOf(Screen.Satellites, Screen.Passes, Screen.AMSAT, 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)
+    )
 
     CompositionLocalProvider(
         LocalElevationThresholds provides ElevationThresholds(
@@ -150,22 +185,18 @@ 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.Map -> screen is Screen.Passes
+                        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 = {
-                            if (isSelected) return@item
+                            if (isSelected && !(currentKey is Screen.Map && screen is Screen.Passes)) return@item
                             while (backStack.size > 1) backStack.removeAt(backStack.size - 1)
                             if (screen !is Screen.Passes) backStack.add(screen)
                         }
@@ -190,7 +221,9 @@ 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 +231,83 @@ 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()
+                                },
+                                navigateToMap = navigateToMap
+                            )
+                        }
+                        entry<Screen.Map> {
+                            MapDestination()
+                        }
+                        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"))

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")

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

@@ -35,6 +35,9 @@ 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 +50,13 @@ 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 +68,9 @@ 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 +83,22 @@ 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 +158,6 @@ 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)

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 ->
@@ -121,6 +227,15 @@ class AmSatRepository(private val remoteSource: IRemoteSource) : IAmSatRepositor
         }
     }
 
+    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())
@@ -64,19 +67,44 @@ 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()
-        }
-        val importedRadios = radioJobs.awaitAll().flatMap { (url, stream) ->
-            stream?.let { dataParser.parseJSONStream(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
         localSource.insertEntries(importedEntries)
         localSource.insertRadios(importedRadios)
@@ -89,6 +117,9 @@ 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 +1,102 @@
+/*
+ * 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.data.repository
+
+import com.rtbishop.look4sat.core.domain.repository.ILoTWRepository
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
+import java.net.HttpURLConnection
+import java.net.URL
+import java.net.URLEncoder
+
+/**
+ * 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 (roughly once per hour per account), which is
+ * fine for a manual sync button.
+ */
+class LoTWRepository : ILoTWRepository {
+
+    override suspend fun fetchConfirmedGrids(callsign: String, password: String): Set<String>? =
+        withContext(Dispatchers.IO) {
+            val call = callsign.trim().uppercase()
+            val pwd = password.trim()
+            if (call.isBlank() || pwd.isBlank()) return@withContext null
+            // 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 return an empty/incremental report.
+            val since = "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(since, "UTF-8"))
+            }
+            try {
+                val connection = URL("$BASE_URL?$query").openConnection() as HttpURLConnection
+                connection.connectTimeout = 15_000
+                connection.readTimeout = 60_000
+                connection.requestMethod = "GET"
+                val code = connection.responseCode
+                if (code !in 200..299) {
+                    connection.disconnect()
+                    return@withContext null
+                }
+                val body = connection.inputStream.bufferedReader().use { it.readText() }
+                connection.disconnect()
+                if (body.contains(" password=") && !body.startsWith("ARRL")) return@withContext null
+                parseConfirmedGrids(body)
+            } catch (e: Exception) {
+                println("LoTWRepository fetch failure: $e")
+                null
+            }
+        }
+
+    internal fun parseConfirmedGrids(body: String): Set<String>? {
+        // LoTW answers with ADIF text; on bad credentials it returns a short error page
+        // containing "password=?" or an <eoh>-less block. Treat anything without a header
+        // marker as failure so the caller can show a sensible message.
+        // 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>()
+        for (raw in body.lineSequence()) {
+            val line = raw.trim()
+            val value = when {
+                line.startsWith("<GRIDSQUARE:") -> line.substringAfter('>')
+                line.startsWith("<VUCC_GRIDS:") -> line.substringAfter('>')
+                else -> continue
+            }.substringBefore("E<").trim().uppercase()
+            if (value.length >= 4) grids.add(value.take(4))
+        }
+        return grids
+    }
+
+    private companion object {
+        const val BASE_URL = "https://lotw.arrl.org/lotwuser/lotwreport.adi"
+    }
+}

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

@@ -38,7 +38,6 @@ import kotlinx.coroutines.flow.combine
 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,
@@ -79,7 +78,7 @@ class SatelliteRepo(
                     aosStartMinute = settings.aosStartMinute,
                     aosEndMinute = settings.aosEndMinute,
                     invertAosTimeWindow = settings.invertAosTimeWindow,
-                    modes = settingsRepo.selectedSatModes.value
+                    modes = settings.selectedModes
                 )
             }
     }
@@ -164,7 +163,7 @@ 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
@@ -182,7 +181,7 @@ class SatelliteRepo(
         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) {

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,
@@ -72,13 +74,15 @@ 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 keyStateOfSensors = "stateOfSensors"
     private val keyStateOfSweep = "stateOfSweep"
     private val keyStateOfUtc = "stateOfUtc"
     private val keyStateOfLightTheme = "stateOfLightTheme"
     private val keyStateOfNightMode = "stateOfNightMode"
+    private val keyStateOfMapGrid = "stateOfMapGrid"
     private val keyStationAltitude = "stationAltitude"
     private val keyStationLatitude = "stationLatitude"
     private val keyStationLongitude = "stationLongitude"
@@ -90,18 +94,25 @@ 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 +120,10 @@ 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> {
@@ -121,14 +132,80 @@ 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()) }
+    }
+
+    // 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()
+        )
+    //endregion
+
+    //region # Transceivers settings
     private val _passesSettings = MutableStateFlow(getPassesSettings())
     override val passesSettings: StateFlow<PassesSettings> = _passesSettings
 
@@ -139,6 +216,7 @@ class SettingsRepo(
         putInt(keyFilterAosStartMinute, settings.aosStartMinute)
         putInt(keyFilterAosEndMinute, settings.aosEndMinute)
         putBoolean(keyFilterAosInvert, settings.invertAosTimeWindow)
+        putString(keySelectedModes, settings.selectedModes.joinToString(separatorComma))
         _passesSettings.value = settings
     }
 
@@ -149,13 +227,16 @@ class SettingsRepo(
         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
         )
     }
     //endregion
@@ -235,6 +316,25 @@ 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)
@@ -339,13 +439,12 @@ class SettingsRepo(
                 putBoolean(keyStateOfUtc, new.stateOfUtc)
                 putBoolean(keyStateOfLightTheme, new.stateOfLightTheme)
                 putBoolean(keyStateOfNightMode, new.stateOfNightMode)
+                putBoolean(keyStateOfMapGrid, new.stateOfMapGrid)
                 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
         }
@@ -358,13 +457,12 @@ class SettingsRepo(
         stateOfUtc = preferences.getBoolean(keyStateOfUtc, false),
         stateOfLightTheme = preferences.getBoolean(keyStateOfLightTheme, false),
         stateOfNightMode = preferences.getBoolean(keyStateOfNightMode, false),
+        stateOfMapGrid = preferences.getBoolean(keyStateOfMapGrid, 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 +471,108 @@ 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 +612,29 @@ 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 +644,24 @@ 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 +1,96 @@
+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
+        // The release APK asset follows the fixed naming scheme used by the build:
+        // Look4Sat-<tag without leading v>-release.apk. 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 apkUrl = if (mirrorPrefix.isEmpty()) {
+            "$DOWNLOAD_BASE_URL/$tag/Look4Sat-${tag.removePrefix("v")}-release.apk"
+        } else {
+            "${mirrorPrefix}https://github.com/atsunatsu/Look4Sat/releases/download/$tag/Look4Sat-${tag.removePrefix("v")}-release.apk"
+        }
+        return LatestRelease(
+            versionTag = tag,
+            title = title,
+            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/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 +1,107 @@
+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
+
+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)
+    }
+}
+
+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) : 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 """{"data":[]}"""
+    }
+
+    override suspend fun submitAmSatReport(payloadJson: String): Pair<Int, String>? = null
+}

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

@@ -31,6 +31,8 @@ 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 +64,7 @@ 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 +102,28 @@ 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 +136,12 @@ 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 +150,14 @@ 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 {
@@ -165,10 +199,10 @@ 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))
@@ -189,9 +223,11 @@ 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 +237,11 @@ 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 +255,21 @@ 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
 }
 
 private fun defaultDataSourcesSettings(): DataSourcesSettings {

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/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/SatStatus.kt

@@ -23,10 +23,10 @@ data class SatDay(
     val slots: List<SatSlot> // 12 槽(00-02 ... 22-24)
 )
 
-/** 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 +29,8 @@ 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>
 )
 
 data class RCSettings(
@@ -58,19 +59,37 @@ data class OtherSettings(
     val stateOfUtc: Boolean,
     val stateOfLightTheme: Boolean,
     val stateOfNightMode: Boolean = false,
+    val stateOfMapGrid: 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
+    val highElevation: Double = 45.0
 )
 
 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 +1,28 @@
+/*
+ * 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 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, or null on any failure (network / bad credentials).
+     */
+    suspend fun fetchConfirmedGrids(callsign: String, password: String): Set<String>?
+}

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/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 +88,21 @@ 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>)
+    //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)
+    //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/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/predict/CelestialComputerTest.kt

@@ -1,79 +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.domain.predict
-
-import org.junit.Assert.assertEquals
-import org.junit.Assert.assertTrue
-import org.junit.Test
-import java.time.Instant
-import kotlin.math.abs
-
-class CelestialComputerTest {
-
-    private data class RiseSetCase(
-        val name: String,
-        val observer: GeoPos,
-        val startIso: String
-    )
-
-    @Test
-    fun `findSunRiseSet returns distinct sunrise and sunset for representative locations`() {
-        val cases = listOf(
-            RiseSetCase("Equator at March equinox", GeoPos(0.0, 0.0), "2026-03-20T00:00:00Z"),
-            RiseSetCase("Equator at September equinox", GeoPos(0.0, 0.0), "2026-09-23T00:00:00Z"),
-            RiseSetCase("Sydney winter", GeoPos(-33.8688, 151.2093), "2026-06-21T00:00:00Z"),
-            RiseSetCase("Buenos Aires winter", GeoPos(-34.6037, -58.3816), "2026-06-21T00:00:00Z"),
-            RiseSetCase("Cape Town winter", GeoPos(-33.9249, 18.4241), "2026-06-21T00:00:00Z"),
-            RiseSetCase("London summer", GeoPos(51.5074, -0.1278), "2026-06-21T00:00:00Z")
-        )
-
-        cases.forEach { testCase ->
-            val result = CelestialComputer.findSunRiseSet(testCase.observer, testCase.startIso.toMillis())
-            val daylightDuration = result.setTimeMillis - result.riseTimeMillis
-
-            assertTrue("${testCase.name}: sunrise should be non-zero", result.riseTimeMillis > 0L)
-            assertTrue("${testCase.name}: sunset should be non-zero", result.setTimeMillis > 0L)
-            assertTrue("${testCase.name}: sunset should be after sunrise", result.setTimeMillis > result.riseTimeMillis)
-            assertTrue("${testCase.name}: daylight duration should be longer than 1 hour", daylightDuration > HOUR_MILLIS)
-            assertTrue("${testCase.name}: daylight duration should be shorter than 24 hours", daylightDuration < DAY_MILLIS)
-
-            val riseElevation = CelestialComputer.getSunPosition(testCase.observer, result.riseTimeMillis).elevation
-            val setElevation = CelestialComputer.getSunPosition(testCase.observer, result.setTimeMillis).elevation
-            assertEquals("${testCase.name}: sunrise should converge near the standard threshold", SUNRISE_SET_THRESHOLD, riseElevation, 0.02)
-            assertEquals("${testCase.name}: sunset should converge near the standard threshold", SUNRISE_SET_THRESHOLD, setElevation, 0.02)
-        }
-    }
-
-    @Test
-    fun `findSunRiseSet does not return the same instant for equinox regression cases`() {
-        listOf("2026-03-20T00:00:00Z", "2026-09-23T00:00:00Z").forEach { startIso ->
-            val result = CelestialComputer.findSunRiseSet(GeoPos(0.0, 0.0), startIso.toMillis())
-            val separationMillis = abs(result.setTimeMillis - result.riseTimeMillis)
-
-            assertTrue("$startIso: sunrise and sunset should be separated", separationMillis > HOUR_MILLIS)
-        }
-    }
-
-    private fun String.toMillis(): Long = Instant.parse(this).toEpochMilli()
-
-    private companion object {
-        private const val SUNRISE_SET_THRESHOLD = -0.8333
-        private const val HOUR_MILLIS = 60L * 60L * 1000L
-        private const val DAY_MILLIS = 24L * HOUR_MILLIS
-    }
-}

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
@@ -219,11 +209,6 @@ 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) {
     ElevatedButton(
@@ -239,13 +224,8 @@ 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 +285,7 @@ fun InfoDialog(
     title: String,
     onDismiss: () -> Unit,
     onAccept: () -> Unit,
+    extraAction: (@Composable () -> Unit)? = null,
     content: @Composable () -> Unit
 ) {
     DialogShell(onDismissRequest = onDismiss) { padding ->
@@ -323,6 +304,10 @@ 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 +315,51 @@ fun InfoDialog(
 }
 
 @Composable
-fun ConfirmDialog(
-    title: String,
-    onCancel: () -> Unit,
-    onAccept: () -> Unit,
-    content: @Composable () -> Unit
+fun SharedDialog(
+    title: String, onCancel: () -> Unit, onAccept: () -> Unit, content: @Composable () -> Unit
 ) {
-    DialogShell(onDismissRequest = onCancel) { padding ->
+    SharedDialog(title = title, onDismissRequest = onCancel, onCancel = onCancel, onAccept = onAccept) { _ ->
+        content()
+    }
+}
+
+@Composable
+fun SharedDialog(
+    title: String,
+    onDismissRequest: () -> Unit,
+    onCancel: (() -> Unit)? = null,
+    onAccept: (() -> Unit)? = null,
+    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(horizontal = if (onCancel != null && onAccept != null) padding else 0.dp)
             )
-            CardButton(onClick = onAccept, text = stringResource(R.string.btn_accept))
+            if (onAccept != null) {
+                CardButton(onClick = onAccept, text = stringResource(R.string.btn_accept))
+            }
         }
-        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 +371,6 @@ 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 +388,7 @@ 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 +396,6 @@ 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/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>
@@ -30,7 +26,7 @@
         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>
@@ -39,7 +35,7 @@
     <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 +96,11 @@
     <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 +110,47 @@
     <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_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

@@ -13,23 +13,19 @@
     <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>
@@ -38,7 +34,7 @@
     <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 +95,11 @@
     <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 +109,23 @@
     <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 +133,23 @@
     <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_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

@@ -13,23 +13,19 @@
     <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 -->
@@ -39,7 +35,7 @@
     <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">
@@ -100,11 +96,11 @@
     <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 +110,47 @@
     <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_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

@@ -14,23 +14,19 @@
     <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>
@@ -40,7 +36,7 @@
     <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 +127,11 @@
     <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 +141,34 @@
     <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 +176,23 @@
     <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_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 +206,8 @@
         \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 (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>
@@ -30,7 +26,7 @@
         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>
@@ -39,7 +35,7 @@
     <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 +96,11 @@
     <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 +110,47 @@
     <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_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

@@ -9,23 +9,20 @@
     <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>
@@ -34,7 +31,7 @@
     <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 +39,41 @@
     <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="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>
@@ -60,9 +92,17 @@
     <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>
@@ -95,11 +135,28 @@
     <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 拉取已确认 QSO 的网格并与 Wavelog 网格合并（当前 %1$d 个）。密码仅保存在手机本地。填好直接点同步，会自动保存并拉取。</string>
+    <string name="prefs_lotw_sync">立即同步</string>
+    <string name="prefs_lotw_syncing">同步中…</string>
+    <string name="prefs_lotw_configured">已从 LoTW 同步 — 共 %1$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="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 +166,34 @@
     <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 +203,23 @@
     <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_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_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 +233,53 @@
         \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（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

@@ -10,28 +10,24 @@
     <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>
@@ -41,7 +37,7 @@
     <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>
@@ -56,13 +52,8 @@
         \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)
+        * Added required tweaks to support Android 17 (API 37)
+        \n\n* Added ACCESS_LOCAL_NETWORK permission check to support network data output
     </string>
 
     <!-- AMSAT Status screen -->
@@ -79,6 +70,26 @@
     <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>
@@ -105,9 +116,16 @@
     <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>
@@ -152,11 +170,28 @@
     <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 and merge them with Wavelog grids (currently %1$d). The password is stored on this device only. Just tap Sync — credentials are saved automatically.</string>
+    <string name="prefs_lotw_sync">Sync now</string>
+    <string name="prefs_lotw_syncing">Syncing…</string>
+    <string name="prefs_lotw_configured">Synced from LoTW — %1$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="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 +204,13 @@
     <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 +219,15 @@
 
     <!-- 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 +237,23 @@
     <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_sweep">Enable radar sweep animation</string>
+    <string name="prefs_other_switch_sensors">Use sensors to rotate radar view</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 +269,52 @@
         \n* Dr T.S. Kelso (Celestrak)
         \n* Libre Space Foundation (SatNOGS)
         \n* xdsopl and Robot36 contributors!
+        \n* BG7NTA (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 +1,38 @@
+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"
+    }
+    // 照搬 Morse Expert 1.15: native 解码器仅 armeabi-v7a
+    defaultConfig {
+        ndk {
+            abiFilters += listOf("armeabi-v7a")
+        }
+    }
+}
+
+// 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"
+}

feature/cw/proguard-rules.pro

@@ -0,0 +1,31 @@
+# Look4Sat Pro — CW 解码模块(照搬 Morse Expert 1.15)混淆规则
+# 所有 CW 类保持原名: pas.* 通过 RegisterNatives 按类名注册 JNI(混淆即崩);
+# 其余为照搬的混淆名类(命名已无混淆意义, 保持以保逻辑完整)。
+
+# JNI 引擎(RegisterNatives 按类名/方法名查表)
+-keep class pas.** { *; }
+
+# 照搬的解码/UI 类(全部保持)
+-keep class com.ve3nea.morse_expert.** { *; }
+-keep class H2.** { *; }
+-keep class I2.b { *; }
+-keep class J2.** { *; }
+-keep class k3.** { *; }
+-keep class i3.** { *; }
+-keep class g3.** { *; }
+-keep class j3.** { *; }
+-keep class s.** { *; }
+-keep class d1.AbstractC1518b { *; }
+-keep class B0.b { *; }
+-keep class B.RunnableC0001b { *; }
+-keep class D.n { *; }
+-keep class E2.g { *; }
+-keep class F2.a { *; }
+-keep class I0.d { *; }
+-keep class K1.a { *; }
+-keep class j1.C1646n { *; }
+
+# sun.misc stub(Android 无此类, 仅编译期; 防止 R8 异常处理)
+-dontwarn sun.misc.**
+-keep class sun.misc.Unsafe { *; }
+-keep class sun.misc.Cleaner { *; }

feature/cw/src/main/java/B/RunnableC0001b.java

@@ -0,0 +1,63 @@
+package B;
+
+import android.text.SpannableStringBuilder;
+import com.ve3nea.morse_expert.DecodedTextView;
+import com.ve3nea.morse_expert.MainActivity;
+import H2.b;
+
+/**
+ * 照搬自 Morse Expert 1.15 B.RunnableC0001b, 类名保持混淆原名。
+ * R8 合并 Runnable 手术: 构造按 smali 真实签名 5 参 (Object,Object,int,int,boolean),
+ * 字段 = i(Object)/h(Object)/g(int)/f(int); run() 仅保留 case 4(f==2 对应 pswitch_4:
+ * 解码文本 UI 更新, H2.b 调用), 其余 case(权限/Intent/通知等库代码)已裁剪。
+ * 注: jadx 4 参构造为错误还原, 已按 smali 修正。
+ */
+public final class RunnableC0001b implements Runnable {
+    public final /* synthetic */ int f;
+
+    /* renamed from: g, reason: collision with root package name */
+    public final int g;
+
+    /* renamed from: h, reason: collision with root package name */
+    public final Object h;
+
+    /* renamed from: i, reason: collision with root package name */
+    public final Object i;
+
+    public /* synthetic */ RunnableC0001b(Object obj, Object obj2, int i4, int i5, boolean z) {
+        this.i = obj;
+        this.h = obj2;
+        this.g = i4;
+        this.f = i5;
+    }
+
+    @Override // java.lang.Runnable
+    public final void run() {
+        if (this.f == 2) {
+            MainActivity mainActivity = ((b) this.i).f620p;
+            if (mainActivity != null) {
+                SpannableStringBuilder spannableStringBuilder = (SpannableStringBuilder) this.h;
+                int i5 = this.g;
+                DecodedTextView decodedTextView = (DecodedTextView) mainActivity.f11035D.f11888g;
+                if (!decodedTextView.f11032n && !decodedTextView.f11033o.get()) {
+                    decodedTextView.beginBatchEdit();
+                    try {
+                        int length2 = decodedTextView.length();
+                        int min = Math.min(length2, i5);
+                        if (min > 0) {
+                            decodedTextView.getEditableText().delete(length2 - min, length2);
+                        }
+                        decodedTextView.q(spannableStringBuilder);
+                        decodedTextView.endBatchEdit();
+                        return;
+                    } catch (Throwable th) {
+                        decodedTextView.endBatchEdit();
+                        throw th;
+                    }
+                }
+                return;
+            }
+            return;
+        }
+    }
+}

feature/cw/src/main/java/B0/b.java

@@ -0,0 +1,61 @@
+package B0;
+
+import android.widget.TextView;
+import com.ve3nea.morse_expert.MainActivity;
+import com.ve3nea.morse_expert.ScaleView;
+import java.util.Locale;
+import d1.AbstractC1518b;
+
+/**
+ * 照搬自 Morse Expert 1.15 B0.b, 类名保持混淆原名。
+ * R8 合并 Runnable 手术: 构造按 smali 真实签名 (H2/b, String, [I) -> f=4;
+ * 只保留 case 4(状态栏更新: dBFS/Hz/dB/WPM + ScaleView 频率标记, H2.b 调用),
+ * 其余 case(WorkManager/动画等库代码)已裁剪。
+ * r3 = scaleView.getHeight()(smali 证实, jadx 寄存器未展开)。
+ */
+public final class b implements Runnable {
+    public final /* synthetic */ int f;
+
+    /* renamed from: g, reason: collision with root package name */
+    public final Object g;
+
+    /* renamed from: h, reason: collision with root package name */
+    public final Object h;
+
+    /* renamed from: i, reason: collision with root package name */
+    public final Object i;
+
+    public b(H2.b bVar, String str, int[] iArr) {
+        this.f = 4;
+        this.g = bVar;
+        this.h = iArr;
+        this.i = str;
+    }
+
+    @Override // java.lang.Runnable
+    public final void run() {
+        if (this.f == 4) {
+            MainActivity mainActivity = ((H2.b) this.g).f621q;
+            if (mainActivity != null) {
+                String str2 = (String) this.i;
+                int[] iArr = (int[]) this.h;
+                String concat;
+                String format = String.format(Locale.US, " %3d dBFS", Integer.valueOf(iArr[0]));
+                if (iArr[5] == 0) {
+                    concat = format.concat("  Idle    ");
+                } else {
+                    concat = format.concat(String.format(Locale.US, "    %4d Hz    %2d dB    %2d WPM    ", Integer.valueOf(iArr[1]), Integer.valueOf(iArr[2]), Integer.valueOf(iArr[3])));
+                }
+                ((TextView) mainActivity.f11035D.f11890i).setText(AbstractC1518b.e(concat, str2));
+                ScaleView scaleView = (ScaleView) mainActivity.f11035D.f11889h;
+                int i4 = iArr[1];
+                scaleView.f11041g = iArr[5];
+                // r3 = scaleView.getHeight()(smali 证实)
+                scaleView.f = (scaleView.getHeight() - 1) - Math.round(((Math.round(i4 * 0.128f) - H2.b.f606z) * scaleView.getHeight()) / H2.b.f603B);
+                scaleView.invalidate();
+                return;
+            }
+            return;
+        }
+    }
+}

feature/cw/src/main/java/D/n.java

@@ -0,0 +1,69 @@
+package D;
+
+import android.graphics.Bitmap;
+import android.opengl.GLES20;
+import android.opengl.GLUtils;
+import com.ve3nea.morse_expert.WaterfallSurfaceView;
+
+/**
+ * 照搬自 Morse Expert 1.15, 类名保持混淆原名。
+ * R8 合并 Runnable 手术: 只保留 case 1(瀑布图频谱->OpenGL 纹理, H2.b 调用),
+ * 其余 case(库/广告)已裁剪。
+ */
+public final /* synthetic */ class n implements Runnable {
+    public final /* synthetic */ int f;
+
+    /* renamed from: g, reason: collision with root package name */
+    public final /* synthetic */ Object f224g;
+
+    /* renamed from: h, reason: collision with root package name */
+    public final /* synthetic */ Object f225h;
+
+    public /* synthetic */ n(Object obj, int i4, Object obj2) {
+        this.f = i4;
+        this.f224g = obj;
+        this.f225h = obj2;
+    }
+
+    @Override // java.lang.Runnable
+    public final void run() {
+        int i4 = this.f;
+        Object obj = this.f225h;
+        Object obj2 = this.f224g;
+        if (i4 == 1) {
+            float[] fArr = (float[]) obj;
+            J2.b bVar = ((WaterfallSurfaceView) obj2).f;
+            Bitmap bitmap = bVar.f733h;
+            int width = bVar.f730d.getWidth();
+            double d4 = width;
+            double b4 = (bVar.b() + 4.0d) % d4;
+            double d5 = bVar.f737l - b4;
+            if (d5 > d4 / 2.0d) {
+                d5 -= d4;
+            } else if (d5 < (-width) / 2.0d) {
+                d5 += d4;
+            }
+            if (Math.abs(d5) > 8.0d) {
+                bVar.f737l = (int) Math.floor(b4);
+            } else {
+                bVar.f732g = (d5 * 1.0E-5d) + bVar.f732g;
+            }
+            int height = bitmap.getHeight() - 1;
+            for (int i5 = 0; i5 <= height; i5++) {
+                J2.a aVar = bVar.f734i;
+                int round = Math.round((fArr[i5] * 4.0f) + 30.0f);
+                aVar.getClass();
+                bitmap.setPixel(0, height - i5, aVar.f727a[Math.max(0, Math.min(255, round))]);
+            }
+            int i6 = bVar.f737l;
+            GLES20.glBindTexture(3553, bVar.f728a[0]);
+            J2.b.a();
+            GLUtils.texSubImage2D(3553, 0, i6, 0, bitmap);
+            J2.b.a();
+            int i7 = bVar.f737l + 1;
+            bVar.f737l = i7;
+            bVar.f737l = i7 % width;
+            return;
+        }
+    }
+}

feature/cw/src/main/java/E2/g.java

@@ -0,0 +1,44 @@
+package E2;
+
+import android.util.Log;
+import android.view.MotionEvent;
+import android.view.View;
+import com.ve3nea.morse_expert.MainActivity;
+import com.ve3nea.morse_expert.ScaleView;
+
+/**
+ * 照搬自 Morse Expert 1.15 (com.ve3nea.morse_expert), 类名保持混淆原名。
+ * R8 合并类手术: 只保留 case 1(瀑布图触摸选频率=应用逻辑),
+ * 其余 case(广告 P4 / appcompat 焦点 / 弹窗)为库代码, 已裁剪。
+ */
+public final class g implements View.OnTouchListener {
+    public final /* synthetic */ int f;
+
+    /* renamed from: g, reason: collision with root package name */
+    public final /* synthetic */ Object f411g;
+
+    public /* synthetic */ g(Object obj, int i4) {
+        this.f = i4;
+        this.f411g = obj;
+    }
+
+    @Override // android.view.View.OnTouchListener
+    public final boolean onTouch(View view, MotionEvent motionEvent) {
+        int i4 = this.f;
+        Object obj = this.f411g;
+        if (i4 == 1) {
+            MainActivity mainActivity = (MainActivity) obj;
+            if (motionEvent.getActionMasked() == 0 && mainActivity.f11037F != null) {
+                // smali 证实: p1 先被重赋值为 f11035D.h(ScaleView)再 getHeight;
+                // 公式 = round((f606z + ((scaleH-1-y)*f603B/scaleH)) / 0.128f)
+                ScaleView scaleView = (ScaleView) mainActivity.f11035D.f11889h;
+                float y3 = motionEvent.getY();
+                int round = Math.round((H2.b.f606z + ((((scaleView.getHeight() - 1) - y3) * H2.b.f603B) / scaleView.getHeight())) / 0.128f);
+                mainActivity.f11037F.f622r.set(round);
+                Log.i("Waterfall", String.format("Touch at %d Hz`", Integer.valueOf(round)));
+            }
+            return false;
+        }
+        return false;
+    }
+}

feature/cw/src/main/java/F2/a.java

@@ -0,0 +1,53 @@
+package F2;
+
+import com.rtbishop.look4sat.feature.cw.R;
+import android.view.ActionMode;
+import android.view.Menu;
+import android.view.MenuItem;
+import com.ve3nea.morse_expert.DecodedTextView;
+
+/* loaded from: classes.dex */
+public final class a implements ActionMode.Callback {
+
+    /* renamed from: a, reason: collision with root package name */
+    public final /* synthetic */ DecodedTextView f564a;
+
+    public a(DecodedTextView decodedTextView) {
+        this.f564a = decodedTextView;
+    }
+
+    @Override // android.view.ActionMode.Callback
+    public final boolean onActionItemClicked(ActionMode actionMode, MenuItem menuItem) {
+        int itemId = menuItem.getItemId();
+        DecodedTextView decodedTextView = this.f564a;
+        if (itemId != 73) {
+            if (itemId != 74) {
+                return false;
+            }
+            decodedTextView.s();
+            return true;
+        }
+        decodedTextView.r();
+        actionMode.finish();
+        return true;
+    }
+
+    @Override // android.view.ActionMode.Callback
+    public final boolean onCreateActionMode(ActionMode actionMode, Menu menu) {
+        this.f564a.f11032n = true;
+        // 原: if (menu.findItem(R.id.shareText) == null) 检查(shareText 为原 APK 资源, 简化后始终添加)
+        menu.add(0, 74, 0, "Share").setIcon(R.drawable.ic_baseline_share_24);
+        menu.add(0, 73, 0, "Save").setIcon(R.drawable.ic_baseline_save_24);
+        return true;
+    }
+
+    @Override // android.view.ActionMode.Callback
+    public final void onDestroyActionMode(ActionMode actionMode) {
+        this.f564a.f11032n = false;
+    }
+
+    @Override // android.view.ActionMode.Callback
+    public final boolean onPrepareActionMode(ActionMode actionMode, Menu menu) {
+        return false;
+    }
+}

feature/cw/src/main/java/H2/a.java

@@ -0,0 +1,82 @@
+package H2;
+
+import android.media.AudioRecord;
+import android.util.Log;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicBoolean;
+
+/* loaded from: classes.dex */
+public final class a implements Runnable {
+    public final int f;
+
+    /* renamed from: g, reason: collision with root package name */
+    public final AudioRecord f596g;
+
+    /* renamed from: h, reason: collision with root package name */
+    public final ExecutorService f597h;
+
+    /* renamed from: i, reason: collision with root package name */
+    public final AtomicBoolean f598i;
+
+    /* renamed from: j, reason: collision with root package name */
+    public final short[] f599j;
+
+    /* renamed from: k, reason: collision with root package name */
+    public final float[] f600k;
+
+    /* renamed from: l, reason: collision with root package name */
+    public b f601l;
+
+    public a() {
+        int minBufferSize = AudioRecord.getMinBufferSize(8000, 16, 2);
+        int i4 = b.f604C;
+        this.f = i4;
+        ExecutorService newSingleThreadExecutor = Executors.newSingleThreadExecutor();
+        this.f597h = newSingleThreadExecutor;
+        AtomicBoolean atomicBoolean = new AtomicBoolean(false);
+        this.f598i = atomicBoolean;
+        this.f599j = new short[i4];
+        this.f600k = new float[i4];
+        AudioRecord audioRecord = new AudioRecord(1, 8000, 16, 2, minBufferSize * 4);
+        this.f596g = audioRecord;
+        if (audioRecord.getState() == 1) {
+            audioRecord.startRecording();
+            if (audioRecord.getState() != 1) {
+                Log.e("AudioRecord", "cannot start");
+            }
+            atomicBoolean.set(true);
+            newSingleThreadExecutor.execute(this);
+            return;
+        }
+        Log.e("AudioInput", "Failed to initialize");
+    }
+
+    @Override // java.lang.Runnable
+    public final void run() {
+        while (true) {
+            try {
+                if (this.f598i.get()) {
+                    float[] fArr = this.f600k;
+                    AudioRecord audioRecord = this.f596g;
+                    short[] sArr = this.f599j;
+                    int i4 = this.f;
+                    if (audioRecord.read(sArr, 0, i4) == i4) {
+                        for (int i5 = 0; i5 < i4; i5++) {
+                            fArr[i5] = sArr[i5] / 32768.0f;
+                        }
+                        b bVar = this.f601l;
+                        if (bVar != null) {
+                            bVar.a(fArr);
+                        }
+                    }
+                } else {
+                    TimeUnit.MILLISECONDS.sleep(100L);
+                }
+            } catch (Exception e4) {
+                Log.e("Audio thread", "Exception: ", e4);
+            }
+        }
+    }
+}

feature/cw/src/main/java/H2/b.java

@@ -0,0 +1,582 @@
+package H2;
+
+import B.RunnableC0001b;
+import D.n;
+import android.content.Context;
+import android.media.MediaScannerConnection;
+import android.os.Handler;
+import android.os.Looper;
+import android.text.SpannableStringBuilder;
+import android.text.format.DateFormat;
+import android.text.style.ForegroundColorSpan;
+import android.util.Log;
+import com.ve3nea.morse_expert.MainActivity;
+import com.ve3nea.morse_expert.WaterfallSurfaceView;
+import i3.d;
+import java.io.BufferedOutputStream;
+import java.io.DataOutputStream;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.util.Arrays;
+import java.util.Date;
+import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.concurrent.atomic.AtomicInteger;
+import k3.s;
+import pas.decoder;
+import pas.nativedecoder;
+
+/* loaded from: classes.dex */
+public final class b {
+
+    /* renamed from: A, reason: collision with root package name */
+    public static final int f602A;
+
+    /* renamed from: B, reason: collision with root package name */
+    public static final int f603B;
+
+    /* renamed from: C, reason: collision with root package name */
+    public static final int f604C;
+
+    /* renamed from: D, reason: collision with root package name */
+    public static final d f605D;
+
+    /* renamed from: z, reason: collision with root package name */
+    public static final int f606z;
+
+    /* renamed from: a, reason: collision with root package name */
+    public final float[] f607a;
+
+    /* renamed from: b, reason: collision with root package name */
+    public final float[] f608b;
+    public final float[] c;
+
+    /* renamed from: d, reason: collision with root package name */
+    public final float[] f609d;
+
+    /* renamed from: e, reason: collision with root package name */
+    public final nativedecoder.TNativeDecoder f610e;
+    public int f;
+
+    /* renamed from: g, reason: collision with root package name */
+    public int f611g;
+
+    /* renamed from: h, reason: collision with root package name */
+    public int f612h;
+
+    /* renamed from: i, reason: collision with root package name */
+    public decoder.TDecoderState f613i;
+
+    /* renamed from: j, reason: collision with root package name */
+    public String f614j;
+
+    /* renamed from: k, reason: collision with root package name */
+    public final c f615k;
+
+    /* renamed from: l, reason: collision with root package name */
+    public int f616l;
+
+    /* renamed from: m, reason: collision with root package name */
+    public final I2.b f617m;
+
+    /* renamed from: n, reason: collision with root package name */
+    public final Handler f618n;
+
+    /* renamed from: o, reason: collision with root package name */
+    public WaterfallSurfaceView f619o;
+
+    /* renamed from: p, reason: collision with root package name */
+    public MainActivity f620p;
+
+    /* renamed from: q, reason: collision with root package name */
+    public MainActivity f621q;
+
+    /* renamed from: r, reason: collision with root package name */
+    public final AtomicInteger f622r;
+
+    /* renamed from: s, reason: collision with root package name */
+    public final AtomicBoolean f623s;
+
+    /* renamed from: t, reason: collision with root package name */
+    public final Context f624t;
+
+    /* renamed from: u, reason: collision with root package name */
+    public int f625u;
+
+    /* renamed from: v, reason: collision with root package name */
+    public final AtomicBoolean f626v;
+
+    /* renamed from: w, reason: collision with root package name */
+    public DataOutputStream f627w;
+
+    /* renamed from: x, reason: collision with root package name */
+    public int f628x;
+
+    /* renamed from: y, reason: collision with root package name */
+    public String f629y;
+
+    /* JADX WARN: Removed duplicated region for block: B:14:0x012d  */
+    /* JADX WARN: Type inference failed for: r0v4, types: [i3.d, java.lang.Object] */
+    static {
+        boolean z3;
+        float f;
+        float f4;
+        float f5;
+        int round = Math.round(25.6f);
+        f606z = round;
+        int round2 = Math.round(153.6f);
+        f602A = round2;
+        f603B = round2 - round;
+        f604C = Math.round(85.333336f);
+        i3.d obj = new i3.d();
+        if (2048 > 1073741824) {
+            z3 = true;
+        } else {
+            z3 = false;
+        }
+        obj.f11709l = z3;
+        int i4 = (int) 1024;
+        obj.f11700a = i4;
+        obj.f11701b = 1024L;
+        if (!z3) {
+            obj.f11708k = 1;
+            int[] iArr = new int[((int) g3.c.a((1 << (((int) (g3.c.d(((float) 1024) + 0.5f) / g3.c.d(2.0d))) / 2)) + 2)) + 2];
+            obj.c = iArr;
+            float[] fArr = new float[i4];
+            obj.f11703e = fArr;
+            int i5 = (i4 * 2) >> 2;
+            obj.f11704g = i5;
+            iArr[0] = i5;
+            iArr[1] = 1;
+            if (i5 > 2) {
+                int i6 = i5 >> 1;
+                float f6 = 0.7853982f / i6;
+                float f7 = 2.0f * f6;
+                float b4 = (float) g3.c.b(i6 * f6);  // r9 = i6 (smali)
+                fArr[0] = 1.0f;
+                fArr[1] = b4;
+                if (i6 == 4) {
+                    double d4 = f7;
+                    f4 = 0.5f;
+                    fArr[2] = (float) g3.c.b(d4);
+                    fArr[3] = (float) g3.c.f(d4);
+                } else {
+                    f4 = 0.5f;
+                    if (i6 > 4) {
+                        iArr[2] = 0;
+                        iArr[3] = 16;
+                        int i7 = i5;
+                        int i8 = 2;
+                        f5 = 1.0f;
+                        while (i7 > 32) {
+                            int i9 = i8 << 1;
+                            int i10 = i8 << 4;
+                            for (int i11 = i8; i11 < i9; i11++) {
+                                int i12 = iArr[i11] << 2;
+                                iArr[i8 + i11] = i12;
+                                iArr[i9 + i11] = i12 + i10;
+                            }
+                            i7 >>= 2;
+                            i8 = i9;
+                        }
+                        fArr[2] = 0.5f / ((float) g3.c.b(f7));
+                        fArr[3] = 0.5f / ((float) g3.c.b(6.0f * f6));
+                        for (int i13 = 4; i13 < i6; i13 += 4) {
+                            float f8 = i13 * f6;
+                            double d5 = f8;
+                            fArr[i13] = (float) g3.c.b(d5);
+                            fArr[i13 + 1] = (float) g3.c.f(d5);
+                            double d6 = 3.0f * f8;
+                            fArr[i13 + 2] = (float) g3.c.b(d6);
+                            fArr[i13 + 3] = -((float) g3.c.f(d6));
+                        }
+                        int i14 = 0;
+                        while (i6 > 2) {
+                            int i15 = i14 + i6;
+                            i6 >>= 1;
+                            fArr[i15] = f5;
+                            fArr[i15 + 1] = b4;
+                            if (i6 == 4) {
+                                float f9 = fArr[i14 + 4];
+                                float f10 = fArr[i14 + 5];
+                                fArr[i15 + 2] = f9;
+                                fArr[i15 + 3] = f10;
+                            } else if (i6 > 4) {
+                                float f11 = fArr[i14 + 4];
+                                float f12 = fArr[i14 + 6];
+                                fArr[i15 + 2] = f4 / f11;
+                                fArr[i15 + 3] = f4 / f12;
+                                for (int i16 = 4; i16 < i6; i16 += 4) {
+                                    int i17 = (i16 * 2) + i14;
+                                    int i18 = i15 + i16;
+                                    float f13 = fArr[i17];
+                                    float f14 = fArr[i17 + 1];
+                                    float f15 = fArr[i17 + 2];
+                                    float f16 = fArr[i17 + 3];
+                                    fArr[i18] = f13;
+                                    fArr[i18 + 1] = f14;
+                                    fArr[i18 + 2] = f15;
+                                    fArr[i18 + 3] = f16;
+                                }
+                            }
+                            i14 = i15;
+                        }
+                    }
+                }
+                f5 = 1.0f;
+                int i142 = 0;
+                while (i6 > 2) {
+                }
+            }
+            int i19 = i4 >> 2;
+            obj.f11706i = i19;
+            iArr[1] = i19;
+            if (i19 > 1) {
+                int i20 = i19 >> 1;
+                float f17 = 0.7853982f / i20;
+                float b5 = (float) g3.c.b(i20 * f17);  // r6 = i20 (smali)
+                fArr[i5] = b5;
+                fArr[i5 + i20] = b5 * 0.5f;
+                for (int i21 = 1; i21 < i20; i21++) {
+                    double d7 = i21 * f17;
+                    fArr[i5 + i21] = ((float) g3.c.b(d7)) * 0.5f;
+                    fArr[(i5 + i19) - i21] = ((float) g3.c.f(d7)) * 0.5f;
+                }
+            }
+        } else {
+            obj.f11708k = 1;
+            s sVar = new s(((long) g3.c.a((1 << ((int) (((long) (g3.c.d(((float) 1024) + 0.5f) / g3.c.d(2.0d))) / 2))) + 2)) + 2, true);
+            obj.f11702d = sVar;
+            k3.d dVar = new k3.d(1024L, true);
+            obj.f = dVar;
+            obj.f11705h = 512L;
+            sVar.c(0L, 512L);
+            sVar.c(1L, 1L);
+            if (512 > 2) {
+                long j4 = 512 >> 1;
+                float f18 = 0.7853982f / ((float) j4);
+                float f19 = f18 * 2.0f;
+                float b6 = (float) g3.c.b(j4 * f18);  // r14 = j4 (smali 同模式)
+                dVar.c(0L, 1.0f);
+                dVar.c(1L, b6);
+                if (j4 == 4) {
+                    f = 0.5f;
+                    double d8 = f19;
+                    dVar.c(2L, (float) g3.c.b(d8));
+                    dVar.c(3L, (float) g3.c.f(d8));
+                } else {
+                    f = 0.5f;
+                    if (j4 > 4) {
+                        sVar.c(2L, 0L);
+                        sVar.c(3L, 16L);
+                        long j5 = 2;
+                        long j6 = 512;
+                        while (j6 > 32) {
+                            long j7 = j5 << 1;
+                            long j8 = j5 << 4;
+                            long j9 = j5;
+                            while (j9 < j7) {
+                                long b7 = sVar.b(j9) << 2;
+                                sVar.c(j5 + j9, b7);
+                                sVar.c(j7 + j9, b7 + j8);
+                                j9++;
+                                f19 = f19;
+                            }
+                            j6 >>= 2;
+                            j5 = j7;
+                        }
+                        dVar.c(2L, 0.5f / ((float) g3.c.b(f19)));
+                        dVar.c(3L, 0.5f / ((float) g3.c.b(6.0f * f18)));
+                        long j10 = 4;
+                        while (j10 < j4) {
+                            float f20 = ((float) j10) * f18;
+                            double d9 = f20;
+                            dVar.c(j10, (float) g3.c.b(d9));
+                            dVar.c(j10 + 1, (float) g3.c.f(d9));
+                            double d10 = 3.0f * f20;
+                            long j11 = j10;
+                            dVar.c(j10 + 2, (float) g3.c.b(d10));
+                            dVar.c(j11 + 3, -((float) g3.c.f(d10)));
+                            j10 = j11 + 4;
+                        }
+                    }
+                }
+                long j12 = 0;
+                long j13 = 2;
+                while (j4 > j13) {
+                    long j14 = j12 + j4;
+                    j4 >>= 1;
+                    dVar.c(j14, 1.0f);
+                    dVar.c(j14 + 1, b6);
+                    if (j4 == 4) {
+                        float b8 = dVar.b(j12 + 4);
+                        float b9 = dVar.b(j12 + 5);
+                        j13 = 2;
+                        dVar.c(j14 + 2, b8);
+                        dVar.c(j14 + 3, b9);
+                    } else {
+                        j13 = 2;
+                        if (j4 > 4) {
+                            float b10 = dVar.b(j12 + 4);
+                            float b11 = dVar.b(6 + j12);
+                            dVar.c(j14 + 2, f / b10);
+                            dVar.c(j14 + 3, f / b11);
+                            long j15 = 4;
+                            while (j15 < j4) {
+                                long j16 = (j15 * 2) + j12;
+                                float f21 = b6;
+                                long j17 = j14 + j15;
+                                long j18 = j12;
+                                float b12 = dVar.b(j16);
+                                long j19 = j14;
+                                float b13 = dVar.b(j16 + 1);
+                                float b14 = dVar.b(j16 + 2);
+                                float b15 = dVar.b(j16 + 3);
+                                dVar.c(j17, b12);
+                                dVar.c(j17 + 1, b13);
+                                dVar.c(j17 + 2, b14);
+                                dVar.c(j17 + 3, b15);
+                                j15 += 4;
+                                b6 = f21;
+                                j12 = j18;
+                                j14 = j19;
+                            }
+                        }
+                    }
+                    b6 = b6;
+                    j12 = j14;
+                }
+            }
+            long j20 = 256;
+            obj.f11707j = 256L;
+            long j21 = 1;
+            sVar.c(1L, 256L);
+            if (256 > 1) {
+                long j22 = 256 >> 1;
+                float f22 = 0.7853982f / ((float) j22);
+                long j23 = 512;
+                dVar.c(512L, (float) g3.c.b(j22 * f22));  // r1 = j22 (smali)
+                dVar.c(512 + j22, dVar.b(512L) * 0.5f);
+                long j24 = 1;
+                while (j24 < j22) {
+                    long j25 = j20;
+                    long j26 = j21;
+                    double d11 = ((float) j24) * f22;
+                    long j27 = j23;
+                    dVar.c(j23 + j24, ((float) g3.c.b(d11)) * 0.5f);
+                    dVar.c((j27 + j25) - j24, ((float) g3.c.f(d11)) * 0.5f);
+                    j24 += j26;
+                    j20 = j25;
+                    j21 = j26;
+                    j23 = j27;
+                }
+            }
+        }
+        f605D = obj;
+    }
+
+    public b(Context context) {
+        float[] fArr = new float[1024];
+        fArr[512] = 1.0f;
+        for (int i4 = 1; i4 < 512; i4++) {
+            double d4 = (i4 * 6.283185307179586d) / 1024;
+            float cos = (float) ((Math.cos(d4 * 2.0d) * 0.08d) + (0.42d - (Math.cos(d4) * 0.5d)));
+            fArr[i4] = cos;
+            double d5 = 0.003125f * 6.283185307179586d * (i4 - 512);
+            float sin = (float) ((Math.sin(d5) / d5) * cos);
+            fArr[i4] = sin;
+            fArr[1024 - i4] = sin;
+        }
+        this.f607a = fArr;
+        this.f608b = new float[1024];
+        this.c = new float[1024];
+        this.f609d = new float[f603B];
+        this.f610e = nativedecoder.TNativeDecoder.Create();
+        this.f614j = "";
+        this.f615k = new c(4000, 0);
+        I2.b bVar = new I2.b();
+        this.f617m = bVar;
+        this.f618n = new Handler(Looper.getMainLooper());
+        this.f622r = new AtomicInteger();
+        this.f623s = new AtomicBoolean(false);
+        this.f625u = 0;
+        this.f626v = new AtomicBoolean(false);
+        this.f628x = 0;
+        this.f624t = context;
+        bVar.b(context);
+    }
+
+    /* JADX WARN: Removed duplicated region for block: B:57:0x01e2  */
+    /* JADX WARN: Removed duplicated region for block: B:63:0x020a A[LOOP:6: B:62:0x0208->B:63:0x020a, LOOP_END] */
+    /* JADX WARN: Removed duplicated region for block: B:66:0x0216 A[LOOP:7: B:65:0x0214->B:66:0x0216, LOOP_END] */
+    /* JADX WARN: Removed duplicated region for block: B:70:0x0232  */
+    /* JADX WARN: Removed duplicated region for block: B:73:? A[RETURN, SYNTHETIC] */
+    /*
+        Code decompiled incorrectly, please refer to instructions dump.
+    */
+    public final void a(float[] fArr) {
+        c cVar;
+        float[] fArr2;
+        float[] fArr3;
+        b bVar;
+        Exception exc;
+        int i4;
+        float f;
+        int i5;
+        WaterfallSurfaceView waterfallSurfaceView;
+        int length = fArr.length;
+        int i6 = 0;
+        while (true) {
+            cVar = this.f615k;
+            if (i6 >= length) {
+                break;
+            }
+            cVar.c(Math.abs(fArr[i6]));
+            i6++;
+        }
+        this.f616l = Math.round(((float) Math.log10(Math.max(-0.5d, cVar.f633e))) * 20.0f);
+        int i7 = f604C;
+        int i8 = 1024 - i7;
+        float[] fArr4 = this.f608b;
+        System.arraycopy(fArr4, i7, fArr4, 0, i8);
+        System.arraycopy(fArr, 0, fArr4, i8, i7);
+        int i9 = 0;
+        while (true) {
+            fArr2 = this.c;
+            if (i9 >= 1024) {
+                break;
+            }
+            fArr2[i9] = fArr4[i9] * this.f607a[i9];
+            i9++;
+        }
+        f605D.k(fArr2, 0);
+        int i10 = f606z;
+        int i11 = i10;
+        while (true) {
+            int i12 = f602A;
+            float f4 = 0.0f;
+            fArr3 = this.f609d;
+            if (i11 < i12) {
+                int i13 = i11 * 2;
+                float f5 = fArr2[i13];
+                float f6 = fArr2[i13 + 1];
+                float f7 = ((f6 * f6) + (f5 * f5)) * 0.001f;
+                if (!Float.isNaN(f7)) {
+                    f4 = f7;
+                }
+                fArr3[i11 - i10] = f4;
+                i11++;
+            } else {
+                // smali: 循环内无 try; 录音写入 try 在循环后(见下)
+                break;
+            }
+        }
+        DataOutputStream dataOutputStream = this.f627w;
+        Context context = this.f624t;
+        AtomicBoolean atomicBoolean = this.f626v;
+        try { // smali try_start_0: 录音写入整块(原 jadx 误把 try 放 break 处)
+            if (dataOutputStream == null && atomicBoolean.get()) {
+                File file = new File(context.getExternalFilesDir(null), ((String) DateFormat.format("yyyy-MM-dd_HH_mm_ss", new Date())) + "_spectra.bin");
+                this.f629y = file.getAbsoluteFile().toString();
+                this.f627w = new DataOutputStream(new BufferedOutputStream(new FileOutputStream(file, false)));
+                this.f628x = 0;
+                this.f614j = " Recording...";
+            }
+            if (this.f627w != null) {
+                for (float f8 : fArr3) {
+                    this.f627w.writeFloat(f8);
+                }
+            }
+            if (atomicBoolean.get()) {
+                int i14 = this.f628x + 1;
+                this.f628x = i14;
+                if (i14 >= 2048) {
+                    atomicBoolean.set(false);
+                    this.f627w.close();
+                    this.f627w = null;
+                    this.f614j = "";
+                    MediaScannerConnection.scanFile(context, new String[]{this.f629y}, new String[]{"application/x-binary"}, null);
+                }
+            }
+        } catch (IOException e4) {
+            Log.e("File write", "Exception: ", e4);
+        }
+        nativedecoder.TNativeDecoder tNativeDecoder = this.f610e;
+        try {
+            this.f613i = tNativeDecoder.ProcessSpectrum(fArr3);
+            int i15 = this.f625u + 1;
+            this.f625u = i15;
+            Handler handler = this.f618n;
+            if (i15 == 15) {
+                try {
+                    this.f625u = 0;
+                    this.f = tNativeDecoder.getPitch();
+                    this.f611g = tNativeDecoder.getSnr();
+                    this.f612h = tNativeDecoder.getWpm();
+                    handler.post(new B0.b(this, this.f614j, new int[]{this.f616l, this.f, this.f611g, this.f612h, tNativeDecoder.getSignalCount(), this.f613i.Value}));
+                    AtomicInteger atomicInteger = this.f622r;
+                    int i16 = atomicInteger.get();
+                    if (i16 != 0) {
+                        tNativeDecoder.LockToPitch(i16);
+                        atomicInteger.set(0);
+                    }
+                    tNativeDecoder.setHamMode(this.f623s.get());
+                } catch (Exception e5) {
+                    // jadx 幻觉区(空循环/空 if 为 catch 错位还原)已裁剪; 原 smali: 记录异常后跳回正常流程尾部
+                    exc = e5;
+                    bVar = this;
+                    Log.e("Audio Processor", "Exception", exc);
+                }
+            }
+            int charCount = tNativeDecoder.getCharCount();
+            if (charCount > 0) {
+                SpannableStringBuilder spannableStringBuilder = new SpannableStringBuilder();
+                int i18 = 0;
+                while (i18 < charCount) {
+                    decoder.TCharInfo GetChar = tNativeDecoder.GetChar(i18);
+                    spannableStringBuilder.append(GetChar.getChar());
+                    ForegroundColorSpan foregroundColorSpan = new ForegroundColorSpan(this.f617m.a(GetChar));
+                    int i19 = i18 + 1;
+                    spannableStringBuilder.setSpan(foregroundColorSpan, i18, i19, 33);
+                    i18 = i19;
+                }
+                bVar = this;
+                try {
+                    handler.post(new RunnableC0001b(bVar, spannableStringBuilder, tNativeDecoder.getDeleteCount(), 2, false));
+                } catch (Exception e6) {
+                    // jadx 幻觉区已裁剪(同 catch e5); 原 smali: 记录异常后跳回正常流程尾部
+                    exc = e6;
+                    Log.e("Audio Processor", "Exception", exc);
+                }
+            } else {
+                bVar = this;
+            }
+        } catch (Exception e7) {
+            // jadx 幻觉(e 变量)已裁剪
+            bVar = this;
+        }
+        i4 = f603B;
+        int i1722 = i4 / 2;
+        float[] copyOfRange22 = Arrays.copyOfRange(fArr3, i1722 - 20, i1722 + 20);
+        Arrays.sort(copyOfRange22);
+        f = copyOfRange22[20];
+        if (f > 0.0f) {
+            for (int i20 = 0; i20 < i4; i20++) {
+                fArr3[i20] = fArr3[i20] / f;
+            }
+        }
+        float[] fArr522 = (float[]) fArr3.clone();
+        new c(12, 1).a(fArr522);
+        new c(12, 0).a(fArr522);
+        for (i5 = 0; i5 < i4; i5++) {
+            fArr3[i5] = fArr3[i5] - fArr522[i5];
+        }
+        for (int i21 = 0; i21 < i4; i21++) {
+            fArr3[i21] = ((float) Math.log10(Math.max(-0.5d, fArr3[i21]) + 1.0d)) * 10.0f;
+        }
+        waterfallSurfaceView = bVar.f619o;
+        if (waterfallSurfaceView != null) {
+            waterfallSurfaceView.queueEvent(new n(waterfallSurfaceView, 1, (float[]) fArr3.clone()));
+        }
+    }
+}

feature/cw/src/main/java/H2/c.java

@@ -0,0 +1,89 @@
+package H2;
+
+/* loaded from: classes.dex */
+public final class c {
+
+    /* renamed from: a, reason: collision with root package name */
+    public final int f630a;
+
+    /* renamed from: b, reason: collision with root package name */
+    public float[] f631b;
+    public int c;
+
+    /* renamed from: d, reason: collision with root package name */
+    public float f632d;
+
+    /* renamed from: e, reason: collision with root package name */
+    public float f633e;
+    public final /* synthetic */ int f;
+
+    public c(int i4, int i5) {
+        this.f = i5;
+        this.f630a = i4 - 1;
+    }
+
+    public final void a(float[] fArr) {
+        int i4 = this.f630a / 2;
+        int length = fArr.length;
+        if (length > i4) {
+            this.f631b = null;
+            for (int i5 = 0; i5 < i4; i5++) {
+                c(fArr[i5]);
+            }
+            for (int i6 = i4; i6 < length; i6++) {
+                fArr[i6 - i4] = c(fArr[i6]);
+            }
+            for (int i7 = length; i7 < length + i4; i7++) {
+                fArr[i7 - i4] = c(fArr[length - 1]);
+            }
+            return;
+        }
+        throw new IllegalArgumentException("Sliding Filter error: input too short");
+    }
+
+    public final float b(float f, float f4) {
+        switch (this.f) {
+            case 0:
+                return Math.max(f, f4);
+            default:
+                return Math.min(f, f4);
+        }
+    }
+
+    public final float c(float f) {
+        float[] fArr = this.f631b;
+        int i4 = this.f630a;
+        if (fArr == null) {
+            this.f631b = new float[i4];
+            for (int i5 = 0; i5 < i4; i5++) {
+                this.f631b[i5] = f;
+            }
+            this.f632d = f;
+            return f;
+        }
+        float b4 = b(this.f632d, f);
+        this.f632d = b4;
+        this.f633e = b(this.f631b[this.c], b4);
+        float[] fArr2 = this.f631b;
+        int i6 = this.c;
+        int i7 = i6 + 1;
+        this.c = i7;
+        fArr2[i6] = f;
+        if (i7 == i4) {
+            int length = fArr2.length;
+            while (true) {
+                this.c = length - 1;
+                int i8 = this.c;
+                if (i8 <= 0) {
+                    break;
+                }
+                float[] fArr3 = this.f631b;
+                fArr3[i8 - 1] = b(fArr3[i8 - 1], fArr3[i8]);
+                length = this.c;
+            }
+            this.c = 0;
+            this.f632d = f;
+        }
+        return this.f633e;
+    }
+}

feature/cw/src/main/java/I0/d.java

@@ -0,0 +1,42 @@
+package I0;
+
+/**
+ * 照搬自 Morse Expert 1.15 I0.d, 类名保持混淆原名。
+ * R8 合并类手术: 只保留 (i3.d, int, int, float[]) FFT 任务构造;
+ * run() 按 smali 原样还原: R8 已将任务体优化为死代码(aget 后 throw null,
+ * 永不执行), 保留原语义(行为与原 APK 完全一致)。
+ * SystemForegroundService(work 库)case 已裁剪。
+ */
+public final class d implements Runnable {
+    public final /* synthetic */ int f = 0;
+
+    /* renamed from: g, reason: collision with root package name */
+    public final /* synthetic */ int f653g;
+
+    /* renamed from: h, reason: collision with root package name */
+    public final /* synthetic */ int f654h;
+
+    /* renamed from: i, reason: collision with root package name */
+    public final /* synthetic */ Object f655i;
+
+    /* renamed from: j, reason: collision with root package name */
+    public final /* synthetic */ Object f656j;
+
+    public d(i3.d dVar, int i4, int i5, float[] fArr) {
+        this.f656j = dVar;
+        this.f653g = i4;
+        this.f654h = i5;
+        this.f655i = fArr;
+    }
+
+    @Override // java.lang.Runnable
+    public final void run() {
+        int i6 = this.f654h;
+        int i7 = this.f653g;
+        if (i7 >= i6) {
+            return;
+        }
+        float f = ((float[]) this.f655i)[i7 * 2];
+        // R8 原代码: aget 后 throw null(死代码, 永不执行) —— 照搬语义, 不执行任何计算
+    }
+}

feature/cw/src/main/java/I2/b.java

@@ -0,0 +1,73 @@
+package I2;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+import pas.decoder;
+
+/* loaded from: classes.dex */
+public final class b {
+
+    /* renamed from: b, reason: collision with root package name */
+    public static final String[] f663b = {"bg_color", "text_color", "text_color_weak", "call_color", "call_color_weak", "cq_color", "cq_color_weak", "rst_color", "rst_color_weak"};
+    public static final String[] c = {"Background color", "Text color", "Text color, weak", "Callsign color", "Callsign color, weak", "CQ color", "CQ color, weak", "RST color", "RST color, weak"};
+
+    /* renamed from: d, reason: collision with root package name */
+    public static final int[] f664d = {-3084048, -16777216, -5592406, -65536, -30584, -16776961, -7829249, -65281, -30465};
+
+    /* renamed from: a, reason: collision with root package name */
+    public final int[] f665a = (int[]) f664d.clone();
+
+    public final int a(decoder.TCharInfo tCharInfo) {
+        boolean lowSnr = tCharInfo.getLowSnr();
+        int[] iArr = this.f665a;
+        if (lowSnr) {
+            int i4 = tCharInfo.getWordType().Value;
+            if (i4 != 0) {
+                if (i4 != 1) {
+                    if (i4 != 2) {
+                        if (i4 != 3) {
+                            if (i4 != 4) {
+                                if (i4 == 5) {
+                                    return iArr[4];
+                                }
+                                return -16777216;
+                            }
+                            return iArr[2];
+                        }
+                        return iArr[6];
+                    }
+                    return iArr[8];
+                }
+                return iArr[2];
+            }
+            return iArr[2];
+        }
+        int i5 = tCharInfo.getWordType().Value;
+        if (i5 != 0) {
+            if (i5 != 1) {
+                if (i5 != 2) {
+                    if (i5 != 3) {
+                        if (i5 != 4) {
+                            if (i5 != 5) {
+                                return -16777216;
+                            }
+                            return iArr[3];
+                        }
+                        return iArr[1];
+                    }
+                    return iArr[5];
+                }
+                return iArr[7];
+            }
+            return iArr[1];
+        }
+        return iArr[1];
+    }
+
+    public final void b(Context context) {
+        SharedPreferences sharedPreferences = context.getSharedPreferences(context.getPackageName() + "_preferences", 0);  // 原 c0.x.a(context)
+        for (int i4 = 0; i4 < 9; i4++) {
+            this.f665a[i4] = sharedPreferences.getInt(f663b[i4], f664d[i4]);
+        }
+    }
+}

feature/cw/src/main/java/J2/a.java

@@ -0,0 +1,45 @@
+package J2;
+
+/* loaded from: classes.dex */
+public final class a {
+
+    /* renamed from: b, reason: collision with root package name */
+    public static final int[] f726b = {16, 17749, 65535, 16776960, 16711680};
+
+    /* renamed from: a, reason: collision with root package name */
+    public final int[] f727a;
+
+    public a() {
+        int[] iArr = new int[256];
+        this.f727a = iArr;
+        int i4 = 4;
+        float f = 255.0f / 4;
+        int[] iArr2 = f726b;
+        int i5 = 0;
+        int i6 = -16777216;
+        iArr[0] = iArr2[0] | (-16777216);
+        int i7 = 1;
+        while (i7 <= i4) {
+            int round = Math.round(i7 * f);
+            iArr[round] = iArr2[i7] | i6;
+            int i8 = round - i5;
+            int i9 = iArr[i5];
+            int i10 = (i9 >> 16) & 255;
+            int i11 = (i9 >> 8) & 255;
+            int i12 = i9 & 255;
+            float f4 = i8;
+            // r10 = iArr2[i7] (下一个锚点色, smali: aget v10, v4, v8)
+            float f5 = (((iArr2[i7] >> 16) & 255) - i10) / f4;
+            float f6 = (((iArr2[i7] >> 8) & 255) - i11) / f4;
+            float f7 = ((iArr2[i7] & 255) - i12) / f4;
+            for (int i13 = 1; i13 < i8; i13++) {
+                float f8 = i13;
+                iArr[i5 + i13] = ((Math.round(f5 * f8) + i10) << 16) | (-16777216) | ((Math.round(f6 * f8) + i11) << 8) | (Math.round(f8 * f7) + i12);
+            }
+            i7++;
+            i5 = round;
+            i4 = 4;
+            i6 = -16777216;
+        }
+    }
+}

feature/cw/src/main/java/J2/b.java

@@ -0,0 +1,183 @@
+package J2;
+
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.opengl.GLES20;
+import android.opengl.GLSurfaceView;
+import android.opengl.GLUtils;
+import android.os.SystemClock;
+import android.util.Log;
+import java.nio.Buffer;
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.nio.FloatBuffer;
+import javax.microedition.khronos.egl.EGLConfig;
+import javax.microedition.khronos.opengles.GL10;
+
+/* loaded from: classes.dex */
+public final class b implements GLSurfaceView.Renderer {
+
+    /* renamed from: b, reason: collision with root package name */
+    public FloatBuffer f729b;
+    public int c;
+
+    /* renamed from: d, reason: collision with root package name */
+    public final Bitmap f730d;
+    public final Context f;
+
+    /* renamed from: g, reason: collision with root package name */
+    public double f732g;
+
+    /* renamed from: h, reason: collision with root package name */
+    public final Bitmap f733h;
+
+    /* renamed from: i, reason: collision with root package name */
+    public final a f734i;
+
+    /* renamed from: j, reason: collision with root package name */
+    public long f735j;
+
+    /* renamed from: k, reason: collision with root package name */
+    public double f736k;
+
+    /* renamed from: l, reason: collision with root package name */
+    public int f737l;
+
+    /* renamed from: a, reason: collision with root package name */
+    public final int[] f728a = new int[1];
+
+    /* renamed from: e, reason: collision with root package name */
+    public final float[] f731e = {-1.0f, -1.0f, 0.0f, 1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 1.0f, -1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 0.0f};
+
+    public b(Context context, int i4) {
+        Bitmap.Config config = Bitmap.Config.ARGB_8888;
+        Bitmap createBitmap = Bitmap.createBitmap(2048, i4, config);
+        this.f730d = createBitmap;
+        createBitmap.eraseColor(16);
+        this.f732g = 0.09375d;
+        this.f734i = new a();
+        this.f735j = 0L;
+        this.f736k = 0.0d;
+        this.f737l = -1;
+        this.f = context;
+        this.f733h = Bitmap.createBitmap(1, i4, config);
+    }
+
+    public static void a() {
+        int glGetError = GLES20.glGetError();
+        if (glGetError != 0) {
+            StackTraceElement stackTraceElement = Thread.currentThread().getStackTrace()[3];
+            Log.e(stackTraceElement.getFileName() + ":" + stackTraceElement.getLineNumber(), ", GLES20 error: " + glGetError);
+        }
+    }
+
+    public final double b() {
+        long uptimeMillis = SystemClock.uptimeMillis();
+        double width = (((uptimeMillis - this.f735j) * this.f732g) + this.f736k) % this.f730d.getWidth();
+        this.f735j = uptimeMillis;
+        this.f736k = width;
+        return width;
+    }
+
+    public final void c(GL10 gl10) {
+        GLES20.glUseProgram(this.c);
+        a();
+        GLES20.glActiveTexture(33984);
+        a();
+        GLES20.glBindTexture(3553, this.f728a[0]);
+        a();
+        GLES20.glUniform1i(GLES20.glGetUniformLocation(this.c, "uTexture"), 0);
+        a();
+        int glGetAttribLocation = GLES20.glGetAttribLocation(this.c, "aPosition");
+        a();
+        int glGetAttribLocation2 = GLES20.glGetAttribLocation(this.c, "aTexPos");
+        a();
+        this.f729b.position(0);
+        a();
+        GLES20.glVertexAttribPointer(glGetAttribLocation, 2, 5126, false, 16, (Buffer) this.f729b);
+        a();
+        GLES20.glEnableVertexAttribArray(glGetAttribLocation);
+        a();
+        this.f729b.position(2);
+        a();
+        GLES20.glVertexAttribPointer(glGetAttribLocation2, 2, 5126, false, 16, (Buffer) this.f729b);
+        a();
+        GLES20.glEnableVertexAttribArray(glGetAttribLocation2);
+        a();
+        GLES20.glDrawArrays(5, 0, 4);
+        a();
+    }
+
+    public final void d(GL10 gl10, int i4, int i5) {
+        GLES20.glViewport(0, 0, i4, i5);
+        a();
+    }
+
+    @Override // android.opengl.GLSurfaceView.Renderer
+    public final void onDrawFrame(GL10 gl10) {
+        float b4 = (float) (b() / this.f730d.getWidth());
+        float f = 0.5f + b4;
+        float[] fArr = this.f731e;
+        fArr[6] = f;
+        fArr[2] = f;
+        float f4 = b4 + 1.0f;
+        fArr[14] = f4;
+        fArr[10] = f4;
+        this.f729b.position(0);
+        this.f729b.put(this.f731e);
+        c(gl10);
+    }
+
+    @Override // android.opengl.GLSurfaceView.Renderer
+    public final void onSurfaceChanged(GL10 gl10, int i4, int i5) {
+        d(gl10, i4, i5);
+        float width = 1.0f - (((this.f730d.getWidth() * 0.7f) / (i4 / this.f.getResources().getDisplayMetrics().density)) * 2.0f);
+        float[] fArr = this.f731e;
+        fArr[4] = width;
+        fArr[0] = width;
+        this.f729b.position(0);
+        this.f729b.put(this.f731e);
+    }
+
+    @Override // android.opengl.GLSurfaceView.Renderer
+    public final void onSurfaceCreated(GL10 gl10, EGLConfig eGLConfig) {
+        int glCreateShader = GLES20.glCreateShader(35633);
+        a();
+        GLES20.glShaderSource(glCreateShader, "attribute vec2 aPosition;\nattribute vec2 aTexPos;\nvarying vec2 vTexPos;\nvoid main() {\n  vTexPos = aTexPos;\n  gl_Position = vec4(aPosition.xy, 0.0, 1.0);\n}");
+        a();
+        GLES20.glCompileShader(glCreateShader);
+        a();
+        int glCreateShader2 = GLES20.glCreateShader(35632);
+        a();
+        GLES20.glShaderSource(glCreateShader2, "precision mediump float;\nuniform sampler2D uTexture;\nvarying vec2 vTexPos;\nvoid main(void)\n{\n  gl_FragColor = texture2D(uTexture, vTexPos);\n}");
+        a();
+        GLES20.glCompileShader(glCreateShader2);
+        a();
+        this.c = GLES20.glCreateProgram();
+        a();
+        GLES20.glAttachShader(this.c, glCreateShader);
+        a();
+        GLES20.glAttachShader(this.c, glCreateShader2);
+        a();
+        GLES20.glLinkProgram(this.c);
+        a();
+        int[] iArr = this.f728a;
+        GLES20.glGenTextures(1, iArr, 0);
+        a();
+        GLES20.glBindTexture(3553, iArr[0]);
+        a();
+        GLES20.glTexParameteri(3553, 10240, 9729);
+        GLES20.glTexParameteri(3553, 10242, 10497);
+        GLES20.glTexParameteri(3553, 10241, 9729);
+        GLES20.glTexParameteri(3553, 10243, 10497);
+        a();
+        GLUtils.texImage2D(3553, 0, this.f730d, 0);
+        a();
+        float[] fArr = this.f731e;
+        ByteBuffer allocateDirect = ByteBuffer.allocateDirect(fArr.length * 4);
+        allocateDirect.order(ByteOrder.nativeOrder());
+        FloatBuffer asFloatBuffer = allocateDirect.asFloatBuffer();
+        this.f729b = asFloatBuffer;
+        asFloatBuffer.put(fArr);
+    }
+}

feature/cw/src/main/java/K1/a.java

@@ -0,0 +1,10 @@
+package K1;
+
+/**
+ * 照搬自 Morse Expert 1.15 K1.a 精简版: 仅保留 k3 FFT 库引用的内存统计静态字段
+ * (K1.a.c 长整型记账)。原 K1.a(828 行)的其余方法为状态栏/库代码, 已裁剪
+ * (状态栏逻辑已在 MainActivity 内联)。
+ */
+public class a {
+    public static long c = 0;
+}

feature/cw/src/main/java/com/rtbishop/look4sat/feature/cw/CwDecodeScreen.kt

@@ -0,0 +1,213 @@
+/*
+ * CwDecodeScreen.kt — Look4Sat 的 CW 解码页面(Compose 外壳)。
+ *
+ * 照搬自 Morse Expert 1.15 的 com.ve3nea.morse_expert.MainActivity(已改为普通控制器类):
+ * - AndroidView 嵌入原版 activity_main.xml(ConstraintLayout 根, 含 decodedTextView/scaleView/
+ *   statusTextView/verticalLayout/waterfallView);
+ * - 生命周期 onCreate/onResume/onPause/onDestroy 全部委托给控制器, 顺序与原 Activity 一致
+ *   (onCreate 必须在 onResume 前, onDispose 先 onPause 再 onDestroy);
+ * - 麦克风权限(RECORD_AUDIO)由 Compose 侧管理, 授予后调用 onPermissionGranted()(= v()),
+ *   用 initialized 标记保证只调一次(v() 会 new a() 覆盖 f11036E);
+ * - 原 options_menu 的 清除/暂停/保存/录音/设置 改为顶部一行按钮(图标用模块内原版 drawable)。
+ *
+ * 注意: 控制器 onCreate 内的 setImmersive(window, false) 会把宿主窗口恢复为
+ * decorFitsSystemWindows(true)(原版行为照搬, 会对整个宿主 Activity 生效)。
+ */
+package com.rtbishop.look4sat.feature.cw
+
+import android.Manifest
+import android.app.Activity
+import android.content.Context
+import android.content.Intent
+import android.content.pm.PackageManager
+import android.net.Uri
+import android.provider.Settings
+import android.view.LayoutInflater
+import androidx.activity.compose.BackHandler
+import androidx.activity.compose.rememberLauncherForActivityResult
+import androidx.activity.result.contract.ActivityResultContracts
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.systemBarsPadding
+import androidx.compose.material3.Button
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.DisposableEffect
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.viewinterop.AndroidView
+import androidx.constraintlayout.widget.ConstraintLayout
+import com.ve3nea.morse_expert.MainActivity
+
+@Composable
+fun CwDecodeScreen(navigateUp: () -> Unit = {}) {
+    val context = LocalContext.current
+    val activity = remember(context) {
+        context as? Activity ?: error("CwDecodeScreen must be hosted in an Activity")
+    }
+    // 照搬的控制器(普通类, 非 Activity); 每次进入页面新建实例
+    val controller = remember { MainActivity() }
+    // 提前 inflate 原版布局, 供 AndroidView 与控制器 onCreate 共用同一根视图
+    val rootView = remember(context) {
+        LayoutInflater.from(context).inflate(R.layout.activity_main, null) as ConstraintLayout
+    }
+
+    var permissionGranted by remember {
+        mutableStateOf(
+            context.checkSelfPermission(Manifest.permission.RECORD_AUDIO) ==
+                PackageManager.PERMISSION_GRANTED
+        )
+    }
+    var permanentlyDenied by remember { mutableStateOf(false) }
+    // v() 会 new a() 覆盖 f11036E, 必须保证只初始化一次
+    var initialized by remember { mutableStateOf(false) }
+    var showSettings by remember { mutableStateOf(false) }
+
+    // 生命周期: onCreate 必须在 onResume 前; onDispose 先 onPause 再 onDestroy
+    DisposableEffect(Unit) {
+        controller.onCreate(activity, rootView)
+        controller.onResume()
+        onDispose {
+            controller.onPause()
+            controller.onDestroy()
+        }
+    }
+
+    // 权限授予后启动解码核心; "首次进入已授权" 与 "弹窗回调授权" 两条路径统一走这里
+    LaunchedEffect(permissionGranted) {
+        if (permissionGranted && !initialized) {
+            controller.onPermissionGranted() // = v(): 创建音频采集 + 解码核心
+            // v() 只创建核心; 页面此刻已处于 resumed, 需再走一次 onResume 立即启动录音
+            // (AudioRecord 是新建的, startRecording 不会重复; GLSurfaceView.onResume 幂等)
+            controller.onResume()
+            initialized = true
+        }
+    }
+
+    val permissionLauncher = rememberLauncherForActivityResult(
+        ActivityResultContracts.RequestPermission()
+    ) { granted ->
+        permissionGranted = granted
+        permanentlyDenied = !granted &&
+            !activity.shouldShowRequestPermissionRationale(Manifest.permission.RECORD_AUDIO)
+    }
+
+    // 原版 tap_back_again_to_close: 单击返回只提示, 2 秒内再按才退出
+    BackHandler {
+        if (!controller.handleBackPress()) navigateUp()
+    }
+
+    if (showSettings) {
+        CwSettingsDialog(controller = controller, onDismiss = { showSettings = false })
+    }
+
+    Column(
+        modifier = Modifier
+            .fillMaxSize()
+            .systemBarsPadding()
+    ) {
+        // 原 options_menu: 暂停/清除/保存(原版图标) + 录音/设置(文字按钮)
+        Row(
+            modifier = Modifier
+                .fillMaxWidth()
+                .padding(horizontal = 4.dp),
+            verticalAlignment = Alignment.CenterVertically,
+            horizontalArrangement = Arrangement.SpaceEvenly
+        ) {
+            IconButton(onClick = { controller.togglePause() }) {
+                Icon(
+                    painter = painterResource(R.drawable.ic_baseline_pause_24),
+                    contentDescription = stringResource(R.string.pause)
+                )
+            }
+            IconButton(onClick = { controller.clearDecoded() }) {
+                Icon(
+                    painter = painterResource(R.drawable.ic_baseline_delete_24),
+                    contentDescription = stringResource(R.string.clear)
+                )
+            }
+            IconButton(onClick = { controller.saveText() }) {
+                Icon(
+                    painter = painterResource(R.drawable.ic_baseline_save_24),
+                    contentDescription = stringResource(R.string.save_text)
+                )
+            }
+            // recordSignals 需要解码核心(f11037F), 未初始化时禁用
+            TextButton(
+                onClick = { if (initialized) controller.recordSignals() },
+                enabled = initialized
+            ) {
+                Text(stringResource(R.string.record_signals))
+            }
+            TextButton(onClick = { showSettings = true }) {
+                Text(stringResource(R.string.settings))
+            }
+        }
+
+        Box(modifier = Modifier.weight(1f).fillMaxWidth()) {
+            AndroidView(
+                factory = { rootView },
+                modifier = Modifier.fillMaxSize()
+            )
+            if (!permissionGranted) {
+                // 未授予麦克风权限: 遮罩 + 提示文字 + 请求按钮
+                Box(
+                    modifier = Modifier
+                        .fillMaxSize()
+                        .background(Color(0x99000000)),
+                    contentAlignment = Alignment.Center
+                ) {
+                    Column(horizontalAlignment = Alignment.CenterHorizontally) {
+                        Text(
+                            text = "Microphone permission is required for CW decoding",
+                            color = Color.White,
+                            textAlign = TextAlign.Center,
+                            modifier = Modifier.padding(horizontal = 24.dp)
+                        )
+                        Spacer(modifier = Modifier.height(12.dp))
+                        Button(onClick = {
+                            permissionLauncher.launch(Manifest.permission.RECORD_AUDIO)
+                        }) {
+                            Text("Grant permission")
+                        }
+                        if (permanentlyDenied) {
+                            // 勾选了"不再询问": 引导去系统设置开启
+                            TextButton(onClick = {
+                                activity.startActivity(
+                                    Intent(
+                                        Settings.ACTION_APPLICATION_DETAILS_SETTINGS,
+                                        Uri.parse("package:${activity.packageName}")
+                                    )
+                                )
+                            }) {
+                                Text("Open app settings")
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+}

feature/cw/src/main/java/com/rtbishop/look4sat/feature/cw/CwSettingsDialog.kt

@@ -0,0 +1,218 @@
+/*
+ * 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.feature.cw
+
+import android.content.Context
+import androidx.compose.foundation.background
+import androidx.compose.foundation.border
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material3.AlertDialog
+import androidx.compose.material3.HorizontalDivider
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.RadioButton
+import androidx.compose.material3.Slider
+import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+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
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.unit.dp
+import com.ve3nea.morse_expert.MainActivity
+import kotlin.math.roundToInt
+
+/** 键名/默认值照搬原 Morse Expert(root_preferences.xml + SettingsActivity 逻辑)。 */
+private const val KEY_MESSAGE_TYPE = "message_type"
+private const val KEY_TEXT_FONT_SIZE = "text_font_size"
+private const val DEFAULT_MESSAGE_TYPE = "general_text"
+private const val DEFAULT_TEXT_FONT_SIZE = 18
+private const val MIN_FONT_SIZE = 7
+private const val MAX_FONT_SIZE = 99
+
+/** 预置色板(9 色, 3x3 网格);原 ColorPreferenceCompat 用第三方 colorpicker, 不引入。 */
+private val PaletteColors = listOf(
+    0xFFD0F0F0.toInt(), 0xFF000000.toInt(), 0xFFFFFFFF.toInt(),
+    0xFFAAAAAA.toInt(), 0xFFFF0000.toInt(), 0xFF00FF00.toInt(),
+    0xFF0000FF.toInt(), 0xFFFFFF00.toInt(), 0xFFFF00FF.toInt(),
+)
+
+/**
+ * CW 设置弹窗(替代原 Morse Expert 的 SettingsActivity)。
+ * 设置项与键名照搬原 APK: message_type / text_font_size / 9 个颜色
+ * (I2.b.f663b 键名, I2.b.f664d 默认值, I2.b.c 英文标题)。
+ * 存储: SharedPreferences(getPackageName() + "_preferences")。
+ * 点击 OK 保存并调用 controller.onResume() 立即生效; Cancel/点外部仅关闭不保存。
+ */
+@Composable
+fun CwSettingsDialog(controller: MainActivity, onDismiss: () -> Unit) {
+    val activity = controller.mActivity ?: return
+    val prefs = remember(activity) {
+        activity.getSharedPreferences(activity.packageName + "_preferences", Context.MODE_PRIVATE)
+    }
+
+    var messageType by remember {
+        mutableStateOf(prefs.getString(KEY_MESSAGE_TYPE, DEFAULT_MESSAGE_TYPE) ?: DEFAULT_MESSAGE_TYPE)
+    }
+    var fontSize by remember {
+        mutableStateOf(
+            prefs.getInt(KEY_TEXT_FONT_SIZE, DEFAULT_TEXT_FONT_SIZE)
+                .toFloat().coerceIn(MIN_FONT_SIZE.toFloat(), MAX_FONT_SIZE.toFloat())
+        )
+    }
+    var colorValues by remember {
+        mutableStateOf(IntArray(9) { i -> prefs.getInt(I2.b.f663b[i], I2.b.f664d[i]) })
+    }
+
+    AlertDialog(
+        onDismissRequest = onDismiss,
+        title = { Text("CW Settings") },
+        text = {
+            Column(
+                modifier = Modifier
+                    .verticalScroll(rememberScrollState())
+                    .padding(top = 4.dp)
+            ) {
+                Text("Message type", style = MaterialTheme.typography.titleSmall)
+                MessageTypeRow("general_text", "General Text", messageType) { messageType = it }
+                MessageTypeRow("ham_radio_qso", "Ham Radio QSO", messageType) { messageType = it }
+                HorizontalDivider(Modifier.padding(vertical = 8.dp))
+
+                Text("Text font size", style = MaterialTheme.typography.titleSmall)
+                Row(verticalAlignment = Alignment.CenterVertically) {
+                    Slider(
+                        value = fontSize,
+                        onValueChange = { fontSize = it },
+                        valueRange = MIN_FONT_SIZE.toFloat()..MAX_FONT_SIZE.toFloat(),
+                        steps = MAX_FONT_SIZE - MIN_FONT_SIZE - 1,
+                        modifier = Modifier.weight(1f),
+                    )
+                    Text(
+                        text = "${fontSize.roundToInt()}",
+                        style = MaterialTheme.typography.titleMedium,
+                        textAlign = TextAlign.End,
+                        modifier = Modifier.width(44.dp),
+                    )
+                }
+                HorizontalDivider(Modifier.padding(vertical = 8.dp))
+
+                Text("Colors", style = MaterialTheme.typography.titleSmall)
+                for (i in 0 until 9) {
+                    ColorSettingRow(
+                        title = I2.b.c[i],
+                        value = colorValues[i],
+                        onSelect = { selected ->
+                            colorValues = colorValues.copyOf().also { it[i] = selected }
+                        },
+                    )
+                }
+            }
+        },
+        confirmButton = {
+            TextButton(onClick = {
+                val editor = prefs.edit()
+                editor.putString(KEY_MESSAGE_TYPE, messageType)
+                editor.putInt(KEY_TEXT_FONT_SIZE, fontSize.roundToInt())
+                for (i in 0 until 9) {
+                    editor.putInt(I2.b.f663b[i], colorValues[i])
+                }
+                editor.apply()
+                // 原 SettingsActivity 返回时由 MainActivity.onResume() 重新读取全部设置; 照搬逻辑已就位
+                controller.onResume()
+                onDismiss()
+            }) { Text("OK") }
+        },
+        dismissButton = {
+            TextButton(onClick = onDismiss) { Text("Cancel") }
+        },
+    )
+}
+
+@Composable
+private fun MessageTypeRow(option: String, label: String, selected: String, onSelect: (String) -> Unit) {
+    Row(
+        modifier = Modifier
+            .fillMaxWidth()
+            .clip(RoundedCornerShape(6.dp))
+            .clickable { onSelect(option) }
+            .padding(vertical = 2.dp),
+        verticalAlignment = Alignment.CenterVertically,
+    ) {
+        RadioButton(selected = option == selected, onClick = { onSelect(option) })
+        Text(label, style = MaterialTheme.typography.bodyMedium)
+    }
+}
+
+@Composable
+private fun ColorSettingRow(title: String, value: Int, onSelect: (Int) -> Unit) {
+    Column(Modifier.fillMaxWidth().padding(vertical = 6.dp)) {
+        Row(verticalAlignment = Alignment.CenterVertically) {
+            Text(title, style = MaterialTheme.typography.bodyMedium, modifier = Modifier.weight(1f))
+            Box(
+                Modifier
+                    .size(20.dp)
+                    .clip(RoundedCornerShape(4.dp))
+                    .background(Color(value)),
+            )
+            Spacer(Modifier.width(6.dp))
+            Text(
+                text = String.format("#%06X", value and 0xFFFFFF),
+                style = MaterialTheme.typography.bodySmall,
+                color = MaterialTheme.colorScheme.onSurfaceVariant,
+            )
+        }
+        Spacer(Modifier.height(6.dp))
+        PaletteGrid(selected = value, onSelect = onSelect)
+    }
+}
+
+@Composable
+private fun PaletteGrid(selected: Int, onSelect: (Int) -> Unit) {
+    Column(verticalArrangement = Arrangement.spacedBy(6.dp)) {
+        PaletteColors.chunked(3).forEach { rowColors ->
+            Row(horizontalArrangement = Arrangement.spacedBy(6.dp)) {
+                rowColors.forEach { color ->
+                    val isSelected = color == selected
+                    Box(
+                        modifier = Modifier
+                            .size(36.dp)
+                            .border(
+                                width = if (isSelected) 3.dp else 1.dp,
+                                color = if (isSelected) MaterialTheme.colorScheme.primary
+                                else MaterialTheme.colorScheme.outlineVariant,
+                                shape = RoundedCornerShape(6.dp),
+                            )
+                            .clip(RoundedCornerShape(6.dp))
+                            .background(Color(color))
+                            .clickable { onSelect(color) },
+                    )
+                }
+            }
+        }
+    }
+}

feature/cw/src/main/java/com/rtbishop/look4sat/feature/cw/suncompat/Cleaner.java

@@ -0,0 +1,14 @@
+package com.rtbishop.look4sat.feature.cw.suncompat;
+
+/**
+ * 编译期 stub:Android 无 sun.misc.Cleaner(照搬 Morse Expert 1.15 k3 FFT 库的清理回调,
+ * 实际 FFT 1024 点不触发 native 路径)。
+ */
+public class Cleaner {
+    public static Cleaner create(Object referent, Runnable thunk) {
+        return null;
+    }
+
+    public void clean() {
+    }
+}