build: bump version to 4.4.7-ba7opf.15.8 (505)

Root cause of the recurring empty AMSAT Live filters: OkHttp defaults to a
10s read timeout and amsat.org's live pages take 7-10s+ from many
networks — every sync timed out, fmNames/linearNames stayed empty, and
(with no previous list, e.g. right after clearing data) the filters were
written as EMPTY. The stale pre-whitelist FM list survived only because
older syncs had occasionally succeeded and the failure path preserved it.

Fix:
1. OkHttp timeouts raised (connect 20s / read 30s / write 30s / call 60s)
   in MainContainer.provideRemoteSource so slow AMSAT pages actually load.
2. updateAmSatLiveLists gains a last-resort fallback: when the AMSAT page
   is down AND there is no previous list to clean, derive FM/Linear from
   the local transceivers (FM / SSB,CW,USB,LSB modes) intersected with
   the amateur whitelist, so a network timeout never wipes the filters.
   ISS module aliases stay excluded by the whitelist intersection.

Regression test: page fails + empty previous list -> fallback yields
{25544} (26700 excluded by whitelist).

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

@@ -45,9 +45,22 @@ interface Look4SatDao {
     @Query("DELETE FROM entries")
     suspend fun deleteEntries()
 
-    @Query("SELECT catnum FROM radios WHERE downlinkMode IN (:modes)")
+    @Query("SELECT catnum FROM radios WHERE downlinkMode IN (:modes) AND isAlive = 1")
     suspend fun getIdsWithModes(modes: List<String>): List<Int>
 
+    /** Like [getIdsWithModes] but only matches transponder records with an uplink,
+     *  excluding downlink-only beacons/telemetry that share the same mode label
+     *  (e.g. CW beacons, FM voice-synthesis beacons) from FM/Linear filter fallback. */
+    @Query("SELECT catnum FROM radios WHERE downlinkMode IN (:modes) AND uplinkLow IS NOT NULL AND isAlive = 1")
+    suspend fun getIdsWithModesAndUplink(modes: List<String>): List<Int>
+
+    /** Like [getIdsWithModes] but only matches records whose service class is
+     *  "Amateur", so the SSTV filter never matches weather birds (TIROS),
+     *  launcher debris or other non-amateur transmitters that happen to carry
+     *  an SSTV-labelled downlink. */
+    @Query("SELECT catnum FROM radios WHERE downlinkMode IN (:modes) AND service = 'Amateur' AND isAlive = 1")
+    suspend fun getIdsWithModesAndAmateur(modes: List<String>): List<Int>
+
     @Query("SELECT COUNT(*) FROM radios")
     suspend fun getRadiosTotal(): Int
 

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

@@ -24,7 +24,7 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 import com.rtbishop.look4sat.core.data.database.entity.SatEntry
 import com.rtbishop.look4sat.core.data.database.entity.SatRadio
 
-@Database(entities = [SatEntry::class, SatRadio::class], version = 2, exportSchema = false)
+@Database(entities = [SatEntry::class, SatRadio::class], version = 3, exportSchema = false)
 abstract class Look4SatDb : RoomDatabase() {
     abstract fun look4SatDao(): Look4SatDao
 }
@@ -37,3 +37,11 @@ val MIGRATION_1_2 = object : Migration(1, 2) {
         db.execSQL("ALTER TABLE radios ADD COLUMN isCustom INTEGER NOT NULL DEFAULT 0")
     }
 }
+
+/** Adds the transceiver service class ("Amateur" etc.), used by the SSTV virtual
+ * filter to tell amateur satellites apart from debris/weather/launcher stages. */
+val MIGRATION_2_3 = object : Migration(2, 3) {
+    override fun migrate(db: SupportSQLiteDatabase) {
+        db.execSQL("ALTER TABLE radios ADD COLUMN service TEXT")
+    }
+}

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

@@ -33,6 +33,10 @@ data class SatRadio(
     val uplinkMode: String?,
     val isInverted: Boolean,
     val catnum: Int?,
+    /** Service class from the transceiver source ("Amateur"/"Unknown" etc.).
+     *  Used to tell amateur satellites apart from debris / weather birds
+     *  (TIROS) / launcher stages (Ariane 6 R/B) in the SSTV virtual filter. */
+    val service: String? = null,
     /** Set for manually imported transceivers, which remote updates must not replace. */
     val isCustom: Boolean = false
 )

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

@@ -25,6 +25,7 @@ import android.location.LocationManager
 import androidx.room.Room
 import com.rtbishop.look4sat.core.data.database.Look4SatDb
 import com.rtbishop.look4sat.core.data.database.MIGRATION_1_2
+import com.rtbishop.look4sat.core.data.database.MIGRATION_2_3
 import com.rtbishop.look4sat.core.data.framework.BluetoothReporter
 import com.rtbishop.look4sat.core.data.framework.Ft817Controller
 import com.rtbishop.look4sat.core.data.framework.Ic705Controller
@@ -73,6 +74,7 @@ import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.flow.asStateFlow
 import okhttp3.OkHttpClient
+import java.util.concurrent.TimeUnit
 
 class MainContainer(private val context: Context) : IMainContainer {
 
@@ -169,14 +171,23 @@ class MainContainer(private val context: Context) : IMainContainer {
     private fun provideLocalSource(): ILocalSource {
         val builder = Room.databaseBuilder(context, Look4SatDb::class.java, "Look4SatDBv400")
         val database = builder
-            .addMigrations(MIGRATION_1_2)
+            .addMigrations(MIGRATION_1_2, MIGRATION_2_3)
             .fallbackToDestructiveMigration(false)
             .build()
         return LocalSource(database.look4SatDao())
     }
 
     private fun provideRemoteSource(): IRemoteSource {
-        return RemoteSource(Dispatchers.IO, context.contentResolver, OkHttpClient.Builder().build())
+        // amsat.org live pages are slow (7-10s+ from some networks); the
+        // OkHttp defaults (10s read timeout) made every AMSAT Live update
+        // time out, silently keeping stale FM/Linear lists forever.
+        val client = OkHttpClient.Builder()
+            .connectTimeout(20, TimeUnit.SECONDS)
+            .readTimeout(30, TimeUnit.SECONDS)
+            .writeTimeout(30, TimeUnit.SECONDS)
+            .callTimeout(60, TimeUnit.SECONDS)
+            .build()
+        return RemoteSource(Dispatchers.IO, context.contentResolver, client)
     }
 
     private fun provideSatelliteRepo(): ISatelliteRepo {

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.NetworkResult
 import com.rtbishop.look4sat.core.domain.source.Sources
 import com.rtbishop.look4sat.core.domain.utility.DataParser
 import kotlinx.coroutines.CoroutineDispatcher
@@ -115,12 +116,107 @@ class DatabaseRepo(
             localSource.insertRadios(importedRadios)
         }
         if (importedEntries.isNotEmpty()) localSource.insertEntries(importedEntries)
+        updateAmSatLiveLists()
         setUpdateSuccessful(System.currentTimeMillis())
     }
 
+    /**
+     * Refresh the AMSAT Live FM/Linear satellite lists (transponders currently
+     * on the air). Best effort: any failure keeps the previous lists and never
+     * blocks the rest of the data update, so the mutual-match filter simply
+     * falls back to the last successful snapshot.
+     */
+    private suspend fun updateAmSatLiveLists() = withContext(dispatcher) {
+        runCatching {
+            val entries = localSource.getEntriesList() // catnum -> name
+            val jobs = Sources.amSatLiveUrls.map { (type, url) ->
+                async { type to remoteSource.getNetworkStream(url) }
+            } + async { "Active" to fetchAmSatActiveStream() }
+            val results = jobs.awaitAll()
+            val fmNames = results.firstOrNull { it.first == "FM" }?.second?.stream
+                ?.let { dataParser.parseAmSatLivePage(it) }.orEmpty()
+            val linearNames = results.firstOrNull { it.first == "Linear" }?.second?.stream
+                ?.let { dataParser.parseAmSatLivePage(it) }.orEmpty()
+            // Amateur whitelist: a failed fetch yields an empty result, which
+            // must NOT wipe out the last good snapshot. Fall back to the
+            // persisted whitelist, and only persist when this fetch actually
+            // returned a stream.
+            val activeStream = results.firstOrNull { it.first == "Active" }?.second?.stream
+            val activeCatnums = activeStream
+                ?.let { dataParser.parseAmSatActiveCatnums(it) }
+                .orEmpty()
+                .ifEmpty { settingsRepo.getAmSatActiveCatnums() }
+            if (activeStream != null) settingsRepo.setAmSatActiveCatnums(activeCatnums)
+            val nameToCatnum = entries.associate { it.name.uppercase() to it.catnum }
+            // Resolve every matching local entry per AMSAT name. A single match
+            // is kept as-is (so satellites absent from the amateur whitelist,
+            // e.g. JO-97/TO-108, are never dropped). Only when several local
+            // entries share the name (ISS station modules ZARYA/UNITY/ZVEZDA/
+            // DESTINY/NAUKA) is the whitelist used to pick the primary one.
+            fun resolvePerName(name: String): Set<Int> {
+                val keys = dataParser.normalizeAmSatName(name)
+                val all = nameToCatnum.filter { (localName, _) ->
+                    dataParser.matchesAmSatName(localName, keys)
+                }.values.toSet()
+                // No local entry matches this AMSAT name (e.g. a brand-new
+                // satellite not yet in the local TLE, like TEVEL2/RS95S):
+                // skip it. Returning empty is correct — crashing here (via
+                // all.first()) aborted the WHOLE list update and kept the
+                // stale pre-whitelist FM list with all five ISS modules.
+                if (all.isEmpty()) return emptySet()
+                if (all.size <= 1) return all
+                val preferred = all.intersect(activeCatnums)
+                if (preferred.isNotEmpty()) return preferred
+                // Whitelist unavailable: keep only the primary entry (smallest
+                // catnum — ISS ZARYA=25544 is the smallest of its five module
+                // entries) instead of admitting every alias (DESTINY etc.).
+                return setOf(all.minOrNull() ?: all.first())
+            }
+            // A failed FM/Linear page fetch yields an empty list here; do NOT
+            // keep the stale list verbatim (it may predate the whitelist and
+            // still contain ISS module aliases like DESTINY). Instead re-run
+            // the multi-match disambiguation on the previous catnums via their
+            // local names, so the whitelist / smallest-catnum rules clean it.
+            fun cleanStaleList(previous: Set<Int>): Set<Int> =
+                previous.mapNotNull { catnum ->
+                    nameToCatnum.entries.firstOrNull { it.value == catnum }?.key
+                }.flatMap { resolvePerName(it) }.toSet()
+            // Last-resort fallback when the AMSAT page is down AND there is no
+            // previous list to clean (e.g. right after clearing data): derive
+            // the FM/Linear sets from the local transceivers intersected with
+            // the amateur whitelist, so a network timeout never wipes the
+            // filters to empty.
+            val fmFallback = localSource.getIdsWithModes(listOf("FM")).toSet().intersect(activeCatnums)
+            val linearFallback = localSource
+                .getIdsWithModes(listOf("SSB", "CW", "USB", "LSB")).toSet().intersect(activeCatnums)
+            val fmCatnums = fmNames.flatMap { resolvePerName(it) }.toSet()
+                .ifEmpty { cleanStaleList(settingsRepo.getAmSatFmCatnums()) }
+                .ifEmpty { fmFallback }
+            val linearCatnums = linearNames.flatMap { resolvePerName(it) }.toSet()
+                .ifEmpty { cleanStaleList(settingsRepo.getAmSatLinearCatnums()) }
+                .ifEmpty { linearFallback }
+            settingsRepo.setAmSatCatnums(fmCatnums, linearCatnums)
+            println("AMSAT live lists updated: FM=${fmCatnums.size}, Linear=${linearCatnums.size}, Active=${activeCatnums.size}")
+        }.onFailure {
+            // Keep the previous lists; the mutual filter stays on the last good snapshot.
+            println("AMSAT live lists update failed: $it")
+        }
+    }
+
+    /** Try the amateur-whitelist sources in order and return the first
+     *  NetworkResult that carried a stream (or null if all failed). */
+    private suspend fun fetchAmSatActiveStream(): NetworkResult? {
+        for (url in Sources.amSatActiveUrls) {
+            val result = remoteSource.getNetworkStream(url)
+            if (result.stream != null) return result
+        }
+        return null
+    }
+
     override suspend fun clearAllData() = withContext(dispatcher) {
         localSource.deleteEntries()
         localSource.deleteRadios()
+        settingsRepo.setAmSatCatnums(emptySet(), emptySet())
         setUpdateSuccessful(0L)
     }
 

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

@@ -65,6 +65,12 @@ class SatelliteRepo(
 
     override suspend fun getRadiosWithId(id: Int) = localStorage.getRadiosWithId(id)
 
+    override suspend fun getSatelliteIdsWithModes(modes: List<String>) = localStorage.getIdsWithModes(modes)
+
+    override suspend fun getSatelliteIdsWithModesAndUplink(modes: List<String>) = localStorage.getIdsWithModesAndUplink(modes)
+
+    override suspend fun getSatelliteIdsWithModesAndAmateur(modes: List<String>) = localStorage.getIdsWithModesAndAmateur(modes)
+
     override suspend fun initRepository() = withContext(dispatcher) {
         combine(
             settingsRepo.selectedIds,

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

@@ -25,6 +25,7 @@ import com.rtbishop.look4sat.core.domain.source.Sources
 import kotlinx.coroutines.CoroutineDispatcher
 import kotlinx.coroutines.ExperimentalCoroutinesApi
 import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.combine
 import kotlinx.coroutines.flow.first
 import kotlinx.coroutines.flow.flatMapLatest
 import kotlinx.coroutines.flow.map
@@ -43,17 +44,23 @@ class SelectionRepo(
 
     // 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.
-    private val itemsWithTypes = currentTypes.flatMapLatest { types: List<String> ->
-        val catnumSet: Set<Int>? = if (types.isEmpty()) {
-            null // null = no filtering
-        } else {
-            val ids = settingsRepo.getSatelliteTypesIds(types)
-            if (ids.isEmpty()) null else ids.toHashSet()
+    // The three virtual types ("AMSAT Live FM", "AMSAT Live Linear", "Live SSTV")
+    // are resolved from live transponder data instead of SharedPreferences.
+    // The AMSAT list version counter re-triggers resolution when a background
+    // data sync rewrites the FM/Linear lists, so the UI reflects the new list
+    // without a restart or type toggle.
+    private val itemsWithTypes = combine(currentTypes, settingsRepo.amSatListsVersion) { types, _ -> types }
+        .flatMapLatest { types: List<String> ->
+            val catnumSet: Set<Int>? = if (types.isEmpty()) {
+                null // null = no filtering
+            } else {
+                val ids = resolveTypeIds(types)
+                if (ids.isEmpty()) emptySet() else ids.toHashSet()
+            }
+            currentItems.map { items ->
+                if (catnumSet == null) items else items.filter { it.catnum in catnumSet }
+            }
         }
-        currentItems.map { items ->
-            if (catnumSet == null) items else items.filter { it.catnum in catnumSet }
-        }
-    }
 
     private val itemsWithQuery = currentQuery.flatMapLatest { query ->
         itemsWithTypes.map { items -> filterByQuery(items, query) }
@@ -61,8 +68,44 @@ class SelectionRepo(
 
     override fun getCurrentTypes() = currentTypes.value
 
-    override fun getTypesList() = Sources.satelliteDataUrls.keys.sorted().toMutableList().apply {
-        removeAt(0)
+    /**
+     * Resolves a list of type names to satellite catnums. The three virtual
+     * transponder/activity types are resolved from live data; all other types
+     * come from the per-type ID lists persisted by [ISettingsRepo].
+     */
+    private suspend fun resolveTypeIds(types: List<String>): List<Int> {
+        val idsSet = mutableSetOf<Int>()
+        types.forEach { type ->
+            when (type) {
+                Sources.virtualTypeNames[0] -> idsSet.addAll(settingsRepo.getAmSatFmCatnums())
+                Sources.virtualTypeNames[1] -> idsSet.addAll(settingsRepo.getAmSatLinearCatnums())
+                // Live SSTV: mode=SSTV transponder records whose service class
+                // is "Amateur", excluding launcher debris / rocket bodies
+                // (names ending in "R/B" or "DEB" — e.g. Ariane 6 R/B) that
+                // carry an amateur payload transponder but are not satellites.
+                Sources.virtualTypeNames[2] -> {
+                    val sstvIds = localSource.getIdsWithModesAndAmateur(listOf("SSTV")).toSet()
+                    val inOrbitNames = currentItems.value.associate { it.catnum to it.name }
+                    val filtered = sstvIds.filter { catnum ->
+                        val name = inOrbitNames[catnum]?.uppercase().orEmpty()
+                        !name.endsWith(" R/B") && !name.endsWith(" DEB") &&
+                            !name.endsWith("R/B") && !name.endsWith("DEB")
+                    }
+                    idsSet.addAll(filtered)
+                }
+                else -> idsSet.addAll(settingsRepo.getSatelliteTypesIds(listOf(type)))
+            }
+        }
+        return idsSet.toList()
+    }
+
+    override fun getTypesList() = buildList {
+        // 三个转发器/活动虚拟类型排在最前.
+        addAll(Sources.virtualTypeNames)
+        // 所有真实 TLE 源类型均可选（含 "All" = CelesTrak active）；只排除
+        // "Other"（空 URL 占位，无数据）。不要用 removeAt(0) —— 字母序第一个
+        // 是 "All"/"ARISS" 这类真实源，删掉会让用户勾不到它们。
+        addAll(Sources.satelliteDataUrls.keys.sorted().filterNot { it == "Other" })
     }
 
     override suspend fun getEntriesFlow() = withContext(dispatcher) {

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

@@ -107,6 +107,9 @@ class SettingsRepo(
     private val keySatelliteEnabled = "satelliteEnabled"
     private val keyTransceiversEnabled = "transceiversEnabled"
     private val keySatnogsTleSourceMigration = "satnogsTleSourceMigration"
+    private val keyAmSatFmCatnums = "amSatFmCatnums"
+    private val keyAmSatLinearCatnums = "amSatLinearCatnums"
+    private val keyAmSatActiveCatnums = "amSatActiveCatnums"
     private val separatorComma = ","
     private val separatorUrl = "\n"
     private val legacyCelestrakSatnogsUrl =
@@ -270,22 +273,35 @@ class SettingsRepo(
     }
 
     // Marked stations in unworked gridsquares, persisted as a single JSON
-    // object: {"OL62":{"c":call,"t":epochMs}}. One mark per grid.
+    // object: {"OL62":[{"c":call,"t":epochMs}, ...]}. Each grid holds an
+    // ordered list (first = pinned/top). v14.1 stored a single object per
+    // grid; reads transparently migrate that old shape to a one-element list.
     private val keyMarkedGridStations = "markedGridStations"
 
-    override fun getMarkedGridStations(): Map<String, com.rtbishop.look4sat.core.domain.model.MarkedStation> {
+    override fun getMarkedGridStations(): Map<String, List<com.rtbishop.look4sat.core.domain.model.MarkedStation>> {
         val json = preferences.getString(keyMarkedGridStations, null).orEmpty()
         if (json.isBlank()) return emptyMap()
         return try {
             val root = org.json.JSONObject(json)
-            val result = mutableMapOf<String, com.rtbishop.look4sat.core.domain.model.MarkedStation>()
+            val result = mutableMapOf<String, List<com.rtbishop.look4sat.core.domain.model.MarkedStation>>()
             for (grid in root.keys()) {
-                val o = root.optJSONObject(grid) ?: continue
-                val call = o.optString("c").ifBlank { continue }
-                result[grid] = com.rtbishop.look4sat.core.domain.model.MarkedStation(
-                    call = call,
-                    epochMs = o.optLong("t")
-                )
+                val value = root.opt(grid)
+                val list = when (value) {
+                    // v14.2+ shape: JSON array of station objects.
+                    is org.json.JSONArray -> (0 until value.length()).mapNotNull { i ->
+                        val o = value.optJSONObject(i) ?: return@mapNotNull null
+                        val call = o.optString("c").ifBlank { return@mapNotNull null }
+                        com.rtbishop.look4sat.core.domain.model.MarkedStation(call = call, epochMs = o.optLong("t"))
+                    }
+                    // v14.1 legacy shape: a single station object per grid.
+                    is org.json.JSONObject -> {
+                        val call = value.optString("c").ifBlank { null }
+                        if (call == null) emptyList()
+                        else listOf(com.rtbishop.look4sat.core.domain.model.MarkedStation(call = call, epochMs = value.optLong("t")))
+                    }
+                    else -> emptyList()
+                }
+                if (list.isNotEmpty()) result[grid] = list
             }
             result
         } catch (_: Exception) {
@@ -293,15 +309,18 @@ class SettingsRepo(
         }
     }
 
-    override fun setMarkedGridStations(stations: Map<String, com.rtbishop.look4sat.core.domain.model.MarkedStation>) {
+    override fun setMarkedGridStations(stations: Map<String, List<com.rtbishop.look4sat.core.domain.model.MarkedStation>>) {
         val root = org.json.JSONObject()
-        for ((grid, station) in stations) {
-            root.put(
-                grid,
-                org.json.JSONObject()
-                    .put("c", station.call)
-                    .put("t", station.epochMs)
-            )
+        for ((grid, list) in stations) {
+            val array = org.json.JSONArray()
+            for (station in list) {
+                array.put(
+                    org.json.JSONObject()
+                        .put("c", station.call)
+                        .put("t", station.epochMs)
+                )
+            }
+            root.put(grid, array)
         }
         preferences.edit { putString(keyMarkedGridStations, root.toString()) }
     }
@@ -479,7 +498,9 @@ class SettingsRepo(
     }
 
     override fun setSatelliteTypeIds(type: String, ids: List<Int>) {
-        if (type == "All") return
+        // "All" is a real TLE source type (CelesTrak active group) whose ids
+        // must be persisted like any other type — skipping it made the "All"
+        // filter resolve to an empty set and show nothing.
         val typesString = ids.joinToString(separatorComma)
         preferences.edit { putString("type$type", typesString) }
     }
@@ -729,6 +750,40 @@ class SettingsRepo(
     }
     //endregion
 
+    //region # AMSAT live-transponder lists
+    private val _amSatListsVersion = MutableStateFlow(0)
+    override val amSatListsVersion: StateFlow<Int> = _amSatListsVersion
+
+    override fun getAmSatFmCatnums(): Set<Int> {
+        val raw = preferences.getString(keyAmSatFmCatnums, null) ?: return emptySet()
+        return raw.split(separatorComma).mapNotNull { it.toIntOrNull() }.toSet()
+    }
+
+    override fun getAmSatLinearCatnums(): Set<Int> {
+        val raw = preferences.getString(keyAmSatLinearCatnums, null) ?: return emptySet()
+        return raw.split(separatorComma).mapNotNull { it.toIntOrNull() }.toSet()
+    }
+
+    override fun setAmSatCatnums(fmCatnums: Set<Int>, linearCatnums: Set<Int>) {
+        preferences.edit {
+            putString(keyAmSatFmCatnums, fmCatnums.sorted().joinToString(separatorComma))
+            putString(keyAmSatLinearCatnums, linearCatnums.sorted().joinToString(separatorComma))
+        }
+        _amSatListsVersion.update { it + 1 }
+    }
+
+    override fun getAmSatActiveCatnums(): Set<Int> {
+        val raw = preferences.getString(keyAmSatActiveCatnums, null) ?: return emptySet()
+        return raw.split(separatorComma).mapNotNull { it.toIntOrNull() }.toSet()
+    }
+
+    override fun setAmSatActiveCatnums(catnums: Set<Int>) {
+        preferences.edit {
+            putString(keyAmSatActiveCatnums, catnums.sorted().joinToString(separatorComma))
+        }
+    }
+    //endregion
+
     //region # Radio control settings
     private val keyRadioControlEnabled = "radioControlEnabled"
     private val keyRadioModel = "radioModel"

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

@@ -48,6 +48,8 @@ class LocalSource(private val look4SatDao: Look4SatDao) : ILocalSource {
     override suspend fun deleteEntries() = look4SatDao.deleteEntries()
 
     override suspend fun getIdsWithModes(modes: List<String>) = look4SatDao.getIdsWithModes(modes)
+    override suspend fun getIdsWithModesAndUplink(modes: List<String>) = look4SatDao.getIdsWithModesAndUplink(modes)
+    override suspend fun getIdsWithModesAndAmateur(modes: List<String>) = look4SatDao.getIdsWithModesAndAmateur(modes)
 
     private fun FrameworkEntry.toDomain() = OrbitalData(
         this.name, this.epoch, this.meanmo, this.eccn, this.incl,
@@ -83,12 +85,14 @@ class LocalSource(private val look4SatDao: Look4SatDao) : ILocalSource {
 
     private fun DomainRadio.toFramework() = FrameworkRadio(
         this.uuid, this.info, this.isAlive, this.downlinkLow, this.downlinkHigh, this.downlinkMode,
-        this.uplinkLow, this.uplinkHigh, this.uplinkMode, this.isInverted, this.catnum, this.isCustom
+        this.uplinkLow, this.uplinkHigh, this.uplinkMode, this.isInverted, this.catnum,
+        this.service, this.isCustom
     )
 
     private fun FrameworkRadio.toDomain() = DomainRadio(
         this.uuid, this.info, this.isAlive, this.downlinkLow, this.downlinkHigh, this.downlinkMode,
-        this.uplinkLow, this.uplinkHigh, this.uplinkMode, this.isInverted, this.catnum, this.isCustom
+        this.uplinkLow, this.uplinkHigh, this.uplinkMode, this.isInverted, this.catnum,
+        this.service, this.isCustom
     )
 
     private fun List<DomainRadio>.toFrameworkRadios() = this.map { radio -> radio.toFramework() }

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

@@ -127,6 +127,29 @@ class DatabaseRepoTest {
         assertEquals(listOf(98248), settingsRepo.satelliteTypeIdsByType["SatNOGS"])
     }
 
+    @Test
+    fun `remote update persists All source type ids`() = runTest(dispatcher) {
+        // Regression: "All" (CelesTrak active) is a real TLE source type whose
+        // ids must be persisted on sync — the old `if (type == "All") return`
+        // silently dropped them, making the "All" filter resolve to nothing.
+        val allUrl = Sources.satelliteDataUrls.getValue("All")
+        val localSource = FakeLocalSource()
+        val remoteSource = FakeRemoteSource().apply {
+            networkStreams[allUrl] = { validCsvStream() }
+        }
+        val settingsRepo = FakeSettingsRepo(
+            dataSources = DataSourcesSettings(
+                satelliteUrls = listOf(allUrl),
+                transceiversUrls = emptyList()
+            )
+        )
+        val repository = DatabaseRepo(dispatcher, dataParser, localSource, remoteSource, settingsRepo)
+
+        repository.updateFromRemote()
+
+        assertEquals(listOf(25544), settingsRepo.satelliteTypeIdsByType["All"])
+    }
+
     private fun validCsvStream(): InputStream = """
         OBJECT_NAME,OBJECT_ID,EPOCH,MEAN_MOTION,ECCENTRICITY,INCLINATION,RA_OF_ASC_NODE,ARG_OF_PERICENTER,MEAN_ANOMALY,EPHEMERIS_TYPE,CLASSIFICATION_TYPE,NORAD_CAT_ID,ELEMENT_SET_NO,REV_AT_EPOCH,BSTAR,MEAN_MOTION_DOT,MEAN_MOTION_DDOT
         ISS (ZARYA),1998-067A,2021-11-16T12:28:09.322176,15.48582035,.0004694,51.6447,309.4881,203.6966,299.8876,0,U,25544,999,31220,.31985E-4,.1288E-4,0
@@ -143,6 +166,168 @@ class DatabaseRepoTest {
         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()
+
+    @Test
+    fun `amsat fm list disambiguates ISS modules via persisted whitelist when active csv fetch fails`() =
+        runTest(dispatcher) {
+            val satnogsUrl = Sources.satelliteDataUrls.getValue("SatNOGS")
+            val localSource = FakeLocalSource()
+            val remoteSource = FakeRemoteSource().apply {
+                networkStreams[satnogsUrl] = { issModulesCsvStream() }
+                networkStreams[Sources.amSatLiveUrls.getValue("FM")] = { amsatFmPageStream() }
+                // Amateur-whitelist URLs intentionally NOT registered -> fetch fails.
+            }
+            val settingsRepo = FakeSettingsRepo(
+                dataSources = DataSourcesSettings(
+                    satelliteUrls = listOf(satnogsUrl),
+                    transceiversUrls = emptyList()
+                )
+            ).apply { amSatActive = setOf(25544) } // whitelist persisted by an earlier good sync
+            val repository = DatabaseRepo(dispatcher, dataParser, localSource, remoteSource, settingsRepo)
+
+            repository.updateFromRemote()
+
+            // Whitelist fetch fails on both sources, but the persisted whitelist
+            // still disambiguates: only primary ISS (ZARYA) survives,
+            // ISS (DESTINY) = 26700 must NOT enter the FM list.
+            assertTrue(25544 in settingsRepo.amSatFm)
+            assertTrue(26700 !in settingsRepo.amSatFm)
+        }
+
+    @Test
+    fun `amsat fm list keeps only smallest catnum when whitelist never available`() = runTest(dispatcher) {
+        val satnogsUrl = Sources.satelliteDataUrls.getValue("SatNOGS")
+        val localSource = FakeLocalSource()
+        val remoteSource = FakeRemoteSource().apply {
+            networkStreams[satnogsUrl] = { issModulesCsvStream() }
+            networkStreams[Sources.amSatLiveUrls.getValue("FM")] = { amsatFmPageStream() }
+        }
+        val settingsRepo = FakeSettingsRepo(
+            dataSources = DataSourcesSettings(
+                satelliteUrls = listOf(satnogsUrl),
+                transceiversUrls = emptyList()
+            )
+        ) // no persisted whitelist at all
+        val repository = DatabaseRepo(dispatcher, dataParser, localSource, remoteSource, settingsRepo)
+
+        repository.updateFromRemote()
+
+        // Without any whitelist, the multi-match collapse keeps the primary
+        // entry (smallest catnum = ISS ZARYA 25544), never every module alias.
+        assertEquals(setOf(25544), settingsRepo.amSatFm)
+    }
+
+    @Test
+    fun `amsat fm list cleans stale ISS module aliases when fm page fetch fails`() = runTest(dispatcher) {
+        val satnogsUrl = Sources.satelliteDataUrls.getValue("SatNOGS")
+        val localSource = FakeLocalSource()
+        val remoteSource = FakeRemoteSource().apply {
+            networkStreams[satnogsUrl] = { issModulesCsvStream() }
+            // FM page NOT registered -> 404 -> empty parse.
+        }
+        val settingsRepo = FakeSettingsRepo(
+            dataSources = DataSourcesSettings(
+                satelliteUrls = listOf(satnogsUrl),
+                transceiversUrls = emptyList()
+            )
+        ).apply {
+            // Pre-whitelist era stale list: ALL five ISS module entries.
+            amSatFm = setOf(25544, 25575, 26400, 26700, 49044)
+        }
+        val repository = DatabaseRepo(dispatcher, dataParser, localSource, remoteSource, settingsRepo)
+
+        repository.updateFromRemote()
+
+        // The stale list is not kept verbatim: with the FM page down, the
+        // previous catnums are re-disambiguated via local names, collapsing
+        // the five ISS modules to the primary ZARYA (25544).
+        assertEquals(setOf(25544), settingsRepo.amSatFm)
+    }
+
+    @Test
+    fun `amsat fm list survives unknown satellite names and still disambiguates ISS`() = runTest(dispatcher) {
+        // Regression: AMSAT pages list satellites absent from the local TLE
+        // (TEVEL2-1..9, RS95S). resolvePerName used to crash on the empty
+        // match set (all.first()), aborting the WHOLE list update and keeping
+        // the stale pre-whitelist FM list with all five ISS modules.
+        val satnogsUrl = Sources.satelliteDataUrls.getValue("SatNOGS")
+        val localSource = FakeLocalSource()
+        val remoteSource = FakeRemoteSource().apply {
+            networkStreams[satnogsUrl] = { issModulesCsvStream() }
+            networkStreams[Sources.amSatLiveUrls.getValue("FM")] = { amsatFmPageWithUnknownStream() }
+        }
+        val settingsRepo = FakeSettingsRepo(
+            dataSources = DataSourcesSettings(
+                satelliteUrls = listOf(satnogsUrl),
+                transceiversUrls = emptyList()
+            )
+        ).apply { amSatActive = setOf(25544) }
+        val repository = DatabaseRepo(dispatcher, dataParser, localSource, remoteSource, settingsRepo)
+
+        repository.updateFromRemote()
+
+        // No crash; ISS still collapses to the primary ZARYA (25544).
+        assertEquals(setOf(25544), settingsRepo.amSatFm)
+    }
+
+    @Test
+    fun `amsat fm list falls back to local FM transceivers when page fails and no previous list`() =
+        runTest(dispatcher) {
+            // After clearing data, the previous FM list is empty AND the AMSAT
+            // page is down (timeout) -> the filter must fall back to local FM
+            // transceivers intersected with the whitelist, never stay empty.
+            val satnogsUrl = Sources.satelliteDataUrls.getValue("SatNOGS")
+            val localSource = FakeLocalSource().apply {
+                idsWithModes = listOf(25544, 26700, 39444) // local FM-transceiver sats
+            }
+            val remoteSource = FakeRemoteSource().apply {
+                networkStreams[satnogsUrl] = { issModulesCsvStream() }
+                // FM/Linear pages NOT registered -> 404 -> fetch fails.
+            }
+            val settingsRepo = FakeSettingsRepo(
+                dataSources = DataSourcesSettings(
+                    satelliteUrls = listOf(satnogsUrl),
+                    transceiversUrls = emptyList()
+                )
+            ).apply { amSatActive = setOf(25544) } // whitelist has only ZARYA
+            val repository = DatabaseRepo(dispatcher, dataParser, localSource, remoteSource, settingsRepo)
+
+            repository.updateFromRemote()
+
+            // Fallback = local FM ids ∩ whitelist = {25544}; ISS module aliases
+            // (26700) are excluded by the whitelist.
+            assertEquals(setOf(25544), settingsRepo.amSatFm)
+        }
+
+    private fun amsatFmPageWithUnknownStream(): InputStream = """
+        <table>
+        <thead><tr><th>Satellite</th><th>Uplink</th><th>Downlink</th><th>Comment</th></tr></thead>
+        <tbody>
+        <tr><td>ISS</td><td>145.990 MHz</td><td>437.800 MHz</td><td></td></tr>
+        <tr><td>TEVEL2-1 thru TEVEL2-9</td><td>145.970 MHz</td><td>436.400 MHz</td><td></td></tr>
+        <tr><td>RS95S(QMR-KWT-2)</td><td>145.920 MHz</td><td>436.950 MHz</td><td></td></tr>
+        </tbody>
+        </table>
+    """.trimIndent().byteInputStream()
+
+    private fun issModulesCsvStream(): InputStream = """
+        OBJECT_NAME,OBJECT_ID,EPOCH,MEAN_MOTION,ECCENTRICITY,INCLINATION,RA_OF_ASC_NODE,ARG_OF_PERICENTER,MEAN_ANOMALY,EPHEMERIS_TYPE,CLASSIFICATION_TYPE,NORAD_CAT_ID,ELEMENT_SET_NO,REV_AT_EPOCH,BSTAR,MEAN_MOTION_DOT,MEAN_MOTION_DDOT
+        ISS (ZARYA),1998-067A,2021-11-16T12:28:09.322176,15.48582035,.0004694,51.6447,309.4881,203.6966,299.8876,0,U,25544,999,31220,.31985E-4,.1288E-4,0
+        ISS (UNITY),1998-067B,2021-11-16T12:28:09.322176,15.48582035,.0004694,51.6447,309.4881,203.6966,299.8876,0,U,25575,999,31220,.31985E-4,.1288E-4,0
+        ISS (ZVEZDA),1998-067C,2021-11-16T12:28:09.322176,15.48582035,.0004694,51.6447,309.4881,203.6966,299.8876,0,U,26400,999,31220,.31985E-4,.1288E-4,0
+        ISS (DESTINY),1998-067D,2021-11-16T12:28:09.322176,15.48582035,.0004694,51.6447,309.4881,203.6966,299.8876,0,U,26700,999,31220,.31985E-4,.1288E-4,0
+        ISS (NAUKA),1998-067E,2021-11-16T12:28:09.322176,15.48582035,.0004694,51.6447,309.4881,203.6966,299.8876,0,U,49044,999,31220,.31985E-4,.1288E-4,0
+    """.trimIndent().byteInputStream()
+
+    private fun amsatFmPageStream(): InputStream = """
+        <table class="has-background">
+        <thead><tr><th>Satellite</th><th>Uplink</th><th>Downlink</th><th>Comment</th></tr></thead>
+        <tbody>
+        <tr><td>ISS</td><td>145.990 MHz</td><td>437.800 MHz</td><td></td></tr>
+        <tr><td>AO-91(RadFxSat / Fox-1B)</td><td>435.250 MHz</td><td>145.960 MHz</td><td></td></tr>
+        </tbody>
+        </table>
+    """.trimIndent().byteInputStream()
 }
 
 private class FakeRemoteSource : IRemoteSource {
@@ -164,10 +349,12 @@ private class FakeRemoteSource : IRemoteSource {
 private class FakeLocalSource : ILocalSource {
     val insertedEntries = mutableListOf<OrbitalData>()
     private val insertedRadios = mutableListOf<SatRadio>()
+    var idsWithModes: List<Int> = emptyList()
 
     override suspend fun getEntriesTotal(): Int = insertedEntries.size
 
-    override suspend fun getEntriesList(): List<SatItem> = emptyList()
+    override suspend fun getEntriesList(): List<SatItem> =
+        insertedEntries.map { SatItem(it.catnum, it.name) }
 
     override suspend fun getEntriesWithIds(ids: List<Int>): List<OrbitalObject> = emptyList()
 
@@ -179,7 +366,9 @@ private class FakeLocalSource : ILocalSource {
         insertedEntries.clear()
     }
 
-    override suspend fun getIdsWithModes(modes: List<String>): List<Int> = emptyList()
+    override suspend fun getIdsWithModes(modes: List<String>): List<Int> = idsWithModes
+    override suspend fun getIdsWithModesAndUplink(modes: List<String>): List<Int> = idsWithModes
+    override suspend fun getIdsWithModesAndAmateur(modes: List<String>): List<Int> = emptyList()
 
     override suspend fun getRadiosTotal(): Int = insertedRadios.size
 
@@ -269,6 +458,22 @@ private class FakeSettingsRepo(dataSources: DataSourcesSettings = defaultDataSou
         (dataSourcesStatus as? MutableStateFlow)?.value = status
     }
 
+    var amSatFm: Set<Int> = emptySet()
+    var amSatLinear: Set<Int> = emptySet()
+    var amSatActive: Set<Int> = emptySet()
+    override val amSatListsVersion: StateFlow<Int> = MutableStateFlow(0)
+
+    override fun getAmSatFmCatnums(): Set<Int> = amSatFm
+    override fun getAmSatLinearCatnums(): Set<Int> = amSatLinear
+    override fun setAmSatCatnums(fmCatnums: Set<Int>, linearCatnums: Set<Int>) {
+        amSatFm = fmCatnums
+        amSatLinear = linearCatnums
+    }
+    override fun getAmSatActiveCatnums(): Set<Int> = amSatActive
+    override fun setAmSatActiveCatnums(catnums: Set<Int>) {
+        amSatActive = catnums
+    }
+
     override fun updateRadioControlSettings(settings: RadioControlSettings) = Unit
 
     override fun getSatelliteOffset(catnum: Int): String = ""
@@ -313,9 +518,9 @@ private class FakeSettingsRepo(dataSources: DataSourcesSettings = defaultDataSou
         roamedGrids.value = grids
     }
 
-    override fun getMarkedGridStations(): Map<String, com.rtbishop.look4sat.core.domain.model.MarkedStation> = emptyMap()
+    override fun getMarkedGridStations(): Map<String, List<com.rtbishop.look4sat.core.domain.model.MarkedStation>> = emptyMap()
 
-    override fun setMarkedGridStations(stations: Map<String, com.rtbishop.look4sat.core.domain.model.MarkedStation>) = Unit
+    override fun setMarkedGridStations(stations: Map<String, List<com.rtbishop.look4sat.core.domain.model.MarkedStation>>) = Unit
 }
 
 private fun defaultDataSourcesSettings(): DataSourcesSettings {

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

@@ -112,22 +112,200 @@ class SelectionRepoSearchTest {
         assertTrue(repo.getEntriesFlow().first().isEmpty())
     }
 
-    private fun createRepo(items: List<SatItem>): ISelectionRepo {
-        return SelectionRepo(
+    @Test
+    fun `FM virtual type shows only AMSAT FM list satellites`() = runTest {
+        val repo = createRepo(
+            items = sampleItems,
+            amSatFm = setOf(25544, 39444)
+        )
+        repo.setTypes(listOf("AMSAT Live FM"))
+        val results = repo.getEntriesFlow().first()
+        assertEquals(listOf(25544, 39444), results.map { it.catnum })
+    }
+
+    @Test
+    fun `SSTV virtual type shows only satellites with SSTV radios`() = runTest {
+        val repo = createRepo(
+            items = sampleItems,
+            sstvIds = listOf(43803)
+        )
+        repo.setTypes(listOf("Live SSTV"))
+        val results = repo.getEntriesFlow().first()
+        assertEquals(listOf(43803), results.map { it.catnum })
+    }
+
+    @Test
+    fun `SSTV virtual type uses the amateur-only radio query`() = runTest {
+        // The repo delegates to getIdsWithModesAndAmateur: the fake returns
+        // only catnums the DAO would have filtered to Amateur service (43803).
+        val repo = createRepo(
+            items = sampleItems,
+            sstvIds = listOf(43803),
+            amSatActive = setOf(43803)
+        )
+        repo.setTypes(listOf("Live SSTV"))
+        val results = repo.getEntriesFlow().first()
+        assertEquals(listOf(43803), results.map { it.catnum })
+    }
+
+    @Test
+    fun `SSTV virtual type excludes rocket-body debris by name`() = runTest {
+        // 60239 is "ARIANE 6 R/B" (launcher debris carrying an amateur SSTV
+        // payload); it must be dropped even though its radio is Amateur.
+        val items = sampleItems + SatItem(catnum = 60239, name = "ARIANE 6 R/B")
+        val repo = createRepo(
+            items = items,
+            sstvIds = listOf(43803, 60239),
+            amSatActive = setOf(43803, 60239)
+        )
+        repo.setTypes(listOf("Live SSTV"))
+        val results = repo.getEntriesFlow().first()
+        assertEquals(listOf(43803), results.map { it.catnum })
+    }
+
+    @Test
+    fun `multiple virtual types union their satellites`() = runTest {
+        val repo = createRepo(
+            items = sampleItems,
+            amSatFm = setOf(25544),
+            amSatLinear = setOf(7530),
+            sstvIds = listOf(43803)
+        )
+        repo.setTypes(listOf("AMSAT Live FM", "Live SSTV"))
+        val results = repo.getEntriesFlow().first()
+        assertEquals(setOf(25544, 43803), results.map { it.catnum }.toSet())
+    }
+
+    @Test
+    fun `clearing types restores full list`() = runTest {
+        val repo = createRepo(items = sampleItems, amSatFm = setOf(25544))
+        repo.setTypes(listOf("AMSAT Live FM"))
+        assertTrue(repo.getEntriesFlow().first().isNotEmpty())
+        repo.setTypes(emptyList())
+        assertEquals(sampleItems.size, repo.getEntriesFlow().first().size)
+    }
+
+    @Test
+    fun `virtual type with empty AMSAT list shows empty not everything`() = runTest {
+        // 根因2回归: AMSAT 清单未同步(空)时, 选虚拟类型应显示空列表, 而非全部卫星.
+        val repo = createRepo(items = sampleItems, amSatFm = emptySet())
+        repo.setTypes(listOf("AMSAT Live FM"))
+        assertTrue(repo.getEntriesFlow().first().isEmpty())
+    }
+
+    @Test
+    fun `virtual type combined with regular type unions both lists`() = runTest {
+        val repo = createRepo(
+            items = sampleItems,
+            amSatFm = setOf(25544),
+            amSatLinear = setOf(7530)
+        )
+        repo.setTypes(listOf("AMSAT Live FM", "AMSAT Live Linear"))
+        val results = repo.getEntriesFlow().first()
+        assertEquals(setOf(25544, 7530), results.map { it.catnum }.toSet())
+    }
+
+    @Test
+    fun `types list has virtual transponder types first and keeps All`() {
+        val repo = createRepo(sampleItems)
+        val types = repo.getTypesList()
+        assertTrue(types.size >= 4)
+        assertEquals("AMSAT Live FM", types[0])
+        assertEquals("AMSAT Live Linear", types[1])
+        assertEquals("Live SSTV", types[2])
+        // "All" must be kept in the list (first original type shown after virtual ones).
+        assertTrue("All" in types)
+    }
+
+    @Test
+    fun `All type resolves to persisted CelesTrak active ids`() = runTest {
+        // Regression: "All" is a real TLE source type (CelesTrak active). Its
+        // ids are persisted on sync like any other type; selecting it must
+        // show the synced satellites, NOT an empty list.
+        val fake = FakeSettingsRepoForSearch()
+        fake.setSatelliteTypeIds("All", sampleItems.map { it.catnum })
+        val repo = SelectionRepo(
+            dispatcher = Dispatchers.Unconfined,
+            localSource = FakeLocalSourceForSearch(sampleItems),
+            settingsRepo = fake
+        )
+        repo.setTypes(listOf("All"))
+        val results = repo.getEntriesFlow().first()
+        assertEquals(sampleItems.map { it.catnum }.toSet(), results.map { it.catnum }.toSet())
+    }
+
+    @Test
+    fun `getTypesList excludes only the Other placeholder`() = runTest {
+        val repo = createRepo(sampleItems)
+        val types = repo.getTypesList()
+        // All real TLE source types must be selectable, including "All"
+        // (CelesTrak active) and "ARISS" (removed by the old removeAt(0)).
+        assertTrue("All" in types)
+        assertTrue("ARISS" in types)
+        assertTrue("R4UAB" in types)
+        assertTrue("SatNOGS" in types)
+        assertTrue("Other" !in types)
+    }
+
+    @Test
+    fun `all types shows all items`() = runTest {
+        val repo = createRepo(sampleItems)
+        repo.setTypes(emptyList()) // "All" = no type filtering
+        val results = repo.getEntriesFlow().first()
+        assertEquals(sampleItems.size, results.size)
+        assertEquals(sampleItems.map { it.catnum }.toSet(), results.map { it.catnum }.toSet())
+    }
+
+    @Test
+    fun `amsat list version bump re-resolves FM filter after data sync`() = runTest {
+        // ISS module aliases: dirty pre-sync FM list contains both ZARYA and DESTINY.
+        val items = listOf(
+            SatItem(25544, "ISS (ZARYA)"),
+            SatItem(26700, "ISS (DESTINY)")
+        )
+        val fake = FakeSettingsRepoForSearch(amSatFm = setOf(25544, 26700))
+        val repo = SelectionRepo(
             dispatcher = Dispatchers.Unconfined,
             localSource = FakeLocalSourceForSearch(items),
-            settingsRepo = FakeSettingsRepoForSearch()
+            settingsRepo = fake
+        )
+        repo.setTypes(listOf("AMSAT Live FM"))
+        assertEquals(setOf(25544, 26700), repo.getEntriesFlow().first().map { it.catnum }.toSet())
+
+        // Simulate a background data sync: lists rewritten + version bumped.
+        fake.setAmSatCatnums(fmCatnums = setOf(25544), linearCatnums = emptySet())
+
+        // The FM filter must reflect the new list WITHOUT a type toggle or restart.
+        assertEquals(listOf(25544), repo.getEntriesFlow().first().map { it.catnum })
+    }
+
+    private fun createRepo(
+        items: List<SatItem>,
+        amSatFm: Set<Int> = emptySet(),
+        amSatLinear: Set<Int> = emptySet(),
+        sstvIds: List<Int> = emptyList(),
+        amSatActive: Set<Int> = emptySet()
+    ): ISelectionRepo {
+        return SelectionRepo(
+            dispatcher = Dispatchers.Unconfined,
+            localSource = FakeLocalSourceForSearch(items, sstvIds),
+            settingsRepo = FakeSettingsRepoForSearch(amSatFm, amSatLinear, amSatActive)
         )
     }
 }
 
-private class FakeLocalSourceForSearch(private val items: List<SatItem>) : ILocalSource {
+private class FakeLocalSourceForSearch(
+    private val items: List<SatItem>,
+    private val sstvIds: List<Int> = emptyList()
+) : ILocalSource {
     override suspend fun getEntriesTotal(): Int = items.size
     override suspend fun getEntriesList(): List<SatItem> = items
     override suspend fun getEntriesWithIds(ids: List<Int>): List<OrbitalObject> = emptyList()
     override suspend fun insertEntries(entries: List<OrbitalData>) = Unit
     override suspend fun deleteEntries() = Unit
-    override suspend fun getIdsWithModes(modes: List<String>): List<Int> = emptyList()
+    override suspend fun getIdsWithModes(modes: List<String>): List<Int> = sstvIds
+    override suspend fun getIdsWithModesAndUplink(modes: List<String>): List<Int> = sstvIds
+    override suspend fun getIdsWithModesAndAmateur(modes: List<String>): List<Int> = sstvIds
     override suspend fun getRadiosTotal(): Int = 0
     override suspend fun getRadiosWithId(id: Int): List<SatRadio> = emptyList()
     override suspend fun insertRadios(radios: List<SatRadio>, isCustom: Boolean) = Unit
@@ -135,7 +313,12 @@ private class FakeLocalSourceForSearch(private val items: List<SatItem>) : ILoca
     override suspend fun deleteRadios() = Unit
 }
 
-private class FakeSettingsRepoForSearch : ISettingsRepo {
+private class FakeSettingsRepoForSearch(
+    var amSatFm: Set<Int> = emptySet(),
+    var amSatLinear: Set<Int> = emptySet(),
+    private var amSatActive: Set<Int> = emptySet()
+) : ISettingsRepo {
+    private val typeIds = mutableMapOf<String, List<Int>>()
     override val appVersionName: String = "test"
     override val selectedIds: StateFlow<List<Int>> = MutableStateFlow(emptyList())
     override val selectedTypes: StateFlow<List<String>> = MutableStateFlow(emptyList())
@@ -170,13 +353,27 @@ private class FakeSettingsRepoForSearch : ISettingsRepo {
     override fun setStationPosition(latitude: Double, longitude: Double, altitude: Double): Boolean = true
     override fun setStationPosition(): Boolean = true
     override fun setStationPosition(locator: String): Boolean = true
-    override fun getSatelliteTypesIds(types: List<String>): List<Int> = emptyList()
-    override fun setSatelliteTypeIds(type: String, ids: List<Int>) = Unit
+    override fun getSatelliteTypesIds(types: List<String>): List<Int> =
+        types.flatMap { typeIds[it].orEmpty() }.distinct()
+
+    override fun setSatelliteTypeIds(type: String, ids: List<Int>) {
+        typeIds[type] = ids
+    }
     override fun updateDatabaseState(state: DatabaseState) = Unit
     override fun updateRCSettings(settings: RCSettings) = Unit
     override fun updateOtherSettings(transform: (OtherSettings) -> OtherSettings) = Unit
     override fun updateDataSourcesSettings(settings: DataSourcesSettings) = Unit
     override fun updateDataSourcesStatus(status: Map<String, Int>) = Unit
+    override fun getAmSatFmCatnums(): Set<Int> = amSatFm
+    override fun getAmSatLinearCatnums(): Set<Int> = amSatLinear
+    override val amSatListsVersion: StateFlow<Int> = MutableStateFlow(0)
+    override fun setAmSatCatnums(fmCatnums: Set<Int>, linearCatnums: Set<Int>) {
+        amSatFm = fmCatnums
+        amSatLinear = linearCatnums
+        (amSatListsVersion as MutableStateFlow<Int>).value++
+    }
+    override fun getAmSatActiveCatnums(): Set<Int> = amSatActive
+    override fun setAmSatActiveCatnums(catnums: Set<Int>) { amSatActive = catnums }
     override fun updateRadioControlSettings(settings: RadioControlSettings) = Unit
     override fun getSatelliteOffset(catnum: Int): String = ""
     override fun setSatelliteOffset(catnum: Int, offset: String) = Unit
@@ -189,8 +386,8 @@ private class FakeSettingsRepoForSearch : ISettingsRepo {
     override fun setWorkedGridQsos(qsos: Map<String, List<com.rtbishop.look4sat.core.domain.model.GridQso>>) = Unit
     override fun getRoamedGrids(): Set<String> = emptySet()
     override fun setRoamedGrids(grids: Set<String>) = Unit
-    override fun getMarkedGridStations(): Map<String, com.rtbishop.look4sat.core.domain.model.MarkedStation> = emptyMap()
-    override fun setMarkedGridStations(stations: Map<String, com.rtbishop.look4sat.core.domain.model.MarkedStation>) = Unit
+    override fun getMarkedGridStations(): Map<String, List<com.rtbishop.look4sat.core.domain.model.MarkedStation>> = emptyMap()
+    override fun setMarkedGridStations(stations: Map<String, List<com.rtbishop.look4sat.core.domain.model.MarkedStation>>) = Unit
     override fun updateLoTWSettings(settings: com.rtbishop.look4sat.core.domain.model.LoTWSettings) = Unit
     override fun getLastLotwSyncDate(): String = ""
     override fun setLastLotwSyncDate(date: String) = Unit

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

@@ -33,6 +33,10 @@ data class SatRadio(
     @SerialName("uplink_mode") val uplinkMode: String?,
     @SerialName("invert") val isInverted: Boolean,
     @SerialName("norad_cat_id") val catnum: Int?,
+    /** Service class from the transceiver source ("Amateur"/"Unknown" etc.).
+     *  Used by the SSTV virtual filter to tell amateur satellites apart from
+     *  debris / weather birds (TIROS) / launcher stages (Ariane 6 R/B). */
+    @SerialName("service") val service: String? = null,
     /** Set for manually imported transceivers, which remote updates must not replace. */
     val isCustom: Boolean = false
 )

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

@@ -65,4 +65,19 @@ interface ISatelliteRepo {
 
     /** Fetch radio transceivers for a satellite by its catalog number. */
     suspend fun getRadiosWithId(id: Int): List<SatRadio>
+
+    /** Satellite catnums whose radios carry any of the given downlink modes.
+     *  Empty modes -> empty result; used to filter the mutual-match satellite
+     *  set to transponder satellites (FM voice / linear). */
+    suspend fun getSatelliteIdsWithModes(modes: List<String>): List<Int>
+
+    /** Like [getSatelliteIdsWithModes] but only matches records with an uplink
+     *  (real transponders), excluding downlink-only beacons/telemetry that share
+     *  the same mode label. Used by the FM/Linear fallback filter. */
+    suspend fun getSatelliteIdsWithModesAndUplink(modes: List<String>): List<Int>
+
+    /** Like [getSatelliteIdsWithModes] but only matches records whose service
+     *  class is "Amateur", so SSTV never matches weather birds (TIROS),
+     *  launcher debris or other non-amateur transmitters. */
+    suspend fun getSatelliteIdsWithModesAndAmateur(modes: List<String>): List<Int>
 }

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

@@ -79,6 +79,23 @@ interface ISettingsRepo {
     fun updateDataSourcesStatus(status: Map<String, Int>)
     //endregion
 
+    //region # AMSAT live-transponder lists
+    /** Catalog numbers of satellites listed on AMSAT's "Live FM Satellites" page. */
+    fun getAmSatFmCatnums(): Set<Int>
+    /** Catalog numbers of satellites listed on AMSAT's "Live Linear Satellites" page. */
+    fun getAmSatLinearCatnums(): Set<Int>
+    fun setAmSatCatnums(fmCatnums: Set<Int>, linearCatnums: Set<Int>)
+    /** Catalog numbers of active *amateur* satellites from AMSAT's
+     *  active-transponder table (whitelist for the virtual type filters). */
+    fun getAmSatActiveCatnums(): Set<Int>
+    fun setAmSatActiveCatnums(catnums: Set<Int>)
+    /** Monotonic version counter, incremented every time the AMSAT live
+     *  FM/Linear lists are rewritten. Consumers that resolve the virtual
+     *  types (SelectionRepo) should re-resolve on change so a background
+     *  data sync is reflected in the UI without a restart. */
+    val amSatListsVersion: StateFlow<Int>
+    //endregion
+
     //region # Radio control settings
     val radioControlSettings: StateFlow<RadioControlSettings>
     fun updateRadioControlSettings(settings: RadioControlSettings)
@@ -106,10 +123,10 @@ interface ISettingsRepo {
     fun getRoamedGrids(): Set<String>
     fun setRoamedGrids(grids: Set<String>)
     /** Stations the user marked as "want to contact" in unworked gridsquares
-     *  (grid -> mark). One mark per grid; cleared automatically when the grid
-     *  becomes worked. */
-    fun getMarkedGridStations(): Map<String, com.rtbishop.look4sat.core.domain.model.MarkedStation>
-    fun setMarkedGridStations(stations: Map<String, com.rtbishop.look4sat.core.domain.model.MarkedStation>)
+     *  (grid -> ordered list of marks; the first is the pinned/top one). The
+     *  whole grid clears automatically once it becomes worked. */
+    fun getMarkedGridStations(): Map<String, List<com.rtbishop.look4sat.core.domain.model.MarkedStation>>
+    fun setMarkedGridStations(stations: Map<String, List<com.rtbishop.look4sat.core.domain.model.MarkedStation>>)
     //endregion
 
     //region # LoTW confirmed-grids settings

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

@@ -29,6 +29,8 @@ interface ILocalSource {
     suspend fun insertEntries(entries: List<OrbitalData>)
     suspend fun deleteEntries()
     suspend fun getIdsWithModes(modes: List<String>): List<Int>
+    suspend fun getIdsWithModesAndUplink(modes: List<String>): List<Int>
+    suspend fun getIdsWithModesAndAmateur(modes: List<String>): List<Int>
     suspend fun getRadiosTotal(): Int
     suspend fun getRadiosWithId(id: Int): List<SatRadio>
     suspend fun insertRadios(radios: List<SatRadio>, isCustom: Boolean = false)

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

@@ -55,4 +55,31 @@ object Sources {
         "SatNOGS" to "https://db.satnogs.org/api/transmitters/?format=json&status=active",
         "R4UAB" to "https://r4uab.ru/transmitters.json"
     )
+    /** AMSAT "Live FM/Linear Satellites" pages: human-maintained lists of
+     *  transponders currently on the air. Parsed into the mutual-match filter
+     *  (satellites that actually carry a working FM-voice / linear repeater). */
+    val amSatLiveUrls = mapOf(
+        "FM" to "https://www.amsat.org/live-fm-satellites/",
+        "Linear" to "https://www.amsat.org/live-linear-satellites/"
+    )
+
+    /** Machine-readable AMSAT active-transponder table (palewire mirror of
+     *  amsat.org's active-frequency pages): one CSV row per active amateur
+     *  transponder with its NORAD catnum. Used as the authoritative whitelist
+     *  of *amateur* satellites, so the virtual filters never match
+     *  non-amateur debris (Ariane 6 R/B), retired weather sats (TIROS), or
+     *  ISS station-module aliases (ISS (DESTINY) etc.). Primary source plus
+     *  a jsDelivr CDN mirror: raw.githubusercontent.com is unreachable on
+     *  some networks (e.g. mainland China mobile), and a failed whitelist
+     *  fetch would silently disable the module disambiguation. */
+    val amSatActiveUrls = listOf(
+        "https://raw.githubusercontent.com/palewire/amateur-satellite-database/main/data/amsat-active-frequencies.csv",
+        "https://cdn.jsdelivr.net/gh/palewire/amateur-satellite-database@main/data/amsat-active-frequencies.csv"
+    )
+
+    /** Virtual satellite-selection types: transponder/activity filters shown
+     *  at the top of the type picker. They resolve to live lists (AMSAT pages
+     *  or mode=SSTV radios) instead of persisted per-type IDs, and are
+     *  mutually exclusive with the regular TLE-source types in the picker. */
+    val virtualTypeNames = listOf("AMSAT Live FM", "AMSAT Live Linear", "Live SSTV")
 }

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

@@ -40,6 +40,21 @@ class DataParser(private val dispatcher: CoroutineDispatcher) {
         }
     }
 
+    /** Parse AMSAT's active-transponder CSV (palewire mirror) and return the
+     *  set of NORAD catnums of active *amateur* satellites. Header row has a
+     *  norad_id column; some rows carry alphanumeric IDs (Bluebird A0241 etc.)
+     *  which are skipped. */
+    suspend fun parseAmSatActiveCatnums(stream: InputStream): Set<Int> = withContext(dispatcher) {
+        stream.bufferedReader().useLines { lines ->
+            val header = lines.firstOrNull() ?: return@useLines emptySet()
+            val noradIdx = header.split(",").indexOfFirst { it.trim().equals("norad_id", true) }
+            if (noradIdx < 0) return@useLines emptySet()
+            lines.mapNotNull { line ->
+                line.split(",").getOrNull(noradIdx)?.trim()?.toIntOrNull()
+            }.toSet()
+        }
+    }
+
     suspend fun parseTLEStream(stream: InputStream): List<OrbitalData> = withContext(dispatcher) {
         stream.bufferedReader().readLines()
             .chunked(3)
@@ -58,6 +73,101 @@ class DataParser(private val dispatcher: CoroutineDispatcher) {
         }.getOrDefault(emptyList())
     }
 
+    /**
+     * Parse an AMSAT "Live FM/Linear Satellites" page into satellite names.
+     * The page is an HTML table whose first column is the satellite name,
+     * sometimes written as an alias list ("AO-91(RadFxSat / Fox-1B)") or a
+     * range ("TEVEL2-1 thru TEVEL2-9"). Returns the distinct expanded names.
+     */
+    suspend fun parseAmSatLivePage(stream: InputStream): List<String> = withContext(dispatcher) {
+        runCatching {
+            val html = stream.bufferedReader().readText()
+            // Grab table rows, take the first cell of each row, keep rows that
+            // look like satellite names (start with letters/digits, not a header).
+            val rows = Regex("<tr[^>]*>(.*?)</tr>", RegexOption.IGNORE_CASE)
+                .findAll(html)
+                .mapNotNull { match ->
+                    val cells = Regex("<t[dh][^>]*>(.*?)</t[dh]>", RegexOption.IGNORE_CASE)
+                        .findAll(match.groupValues[1])
+                        .map { cell -> stripHtml(cell.groupValues[1]).trim() }
+                        .toList()
+                    cells.firstOrNull()?.takeIf { it.isNotBlank() && !it.equals("Satellite", ignoreCase = true) }
+                }
+                .toList()
+            rows.flatMap { expandNameRange(it) }.distinct()
+        }.getOrDefault(emptyList())
+    }
+
+    private fun stripHtml(raw: String): String =
+        raw.replace(Regex("<[^>]+>"), " ").replace(Regex("\\s+"), " ").trim()
+
+    /** Expand "NAME1 thru NAME9" ranges (e.g. TEVEL2-1 thru TEVEL2-9). */
+    private fun expandNameRange(name: String): List<String> {
+        val m = Regex("^(.*?)(\\d+)\\s+thru\\s+(.*?)(\\d+)$", RegexOption.IGNORE_CASE).find(name)
+        if (m == null) return listOf(name)
+        val prefix1 = m.groupValues[1].trim()
+        val startNum = m.groupValues[2].toIntOrNull() ?: return listOf(name)
+        val endNum = m.groupValues[4].toIntOrNull() ?: return listOf(name)
+        val prefix2 = m.groupValues[3].trim()
+        if (startNum > endNum) return listOf(name)
+        // Suffix after the end number, if any (e.g. "TEVEL2-1 thru TEVEL2-9 ").
+        val suffix = name.substringAfterLast(m.groupValues[4]).trim()
+        return (startNum..endNum).map { "$prefix1$it$suffix" }
+    }
+
+    /**
+     * Normalize a satellite name from the AMSAT live pages into lookup keys
+     * used to match against the local entries table:
+     *  - primary key: the leading designator ("AO-91" from "AO-91 (RadFxSat / Fox-1B)")
+     *  - alias keys: every bracketed alias, uppercased, digits preserved
+     * The local entry names are normalized the same way in [matchesAmSatName].
+     */
+    fun normalizeAmSatName(name: String): List<String> {
+        val keys = mutableListOf<String>()
+        // Primary: everything before the first '(' (or '['), then the first token.
+        val primary = name.substringBefore('(').substringBefore('[').trim()
+        primary.split(Regex("\\s+")).firstOrNull()?.takeIf { it.isNotBlank() }?.let {
+            keys += it.uppercase()
+        }
+        // Aliases inside parentheses / brackets: "RadFxSat / Fox-1B" -> two keys.
+        Regex("\\(([^)]*)\\)").findAll(name).forEach { m ->
+            m.groupValues[1].split('/', '|').forEach { alias ->
+                alias.trim().takeIf { it.isNotBlank() }?.let { keys += it.uppercase() }
+            }
+        }
+        Regex("\\[([^]]*)]").findAll(name).forEach { m ->
+            m.groupValues[1].split('/', '|').forEach { alias ->
+                alias.trim().takeIf { it.isNotBlank() }?.let { keys += it.uppercase() }
+            }
+        }
+        return keys.distinct()
+    }
+
+    /** True if a local entry name matches any of the AMSAT normalized keys.
+     *  Token-based exact match (split on spaces/brackets/slashes), so a key
+     *  like "ISS" does not substring-match "AISSAT-1" — the key must equal a
+     *  whole name token (case-insensitive). OSCAR designators are expanded so
+     *  that "AO-7" also matches local names spelled "OSCAR 7" / "AMSAT-OSCAR 7"
+     *  (the form used by CelesTrak/SatNOGS TLE sources). */
+    fun matchesAmSatName(localName: String, amSatKeys: List<String>): Boolean {
+        val localUpper = localName.uppercase()
+        val localTokens = localUpper
+            .split(Regex("[\\s()\\[\\]/]+"))
+            .filter { it.isNotBlank() }
+            .toSet()
+        return amSatKeys.any { key ->
+            val k = key.uppercase()
+            if (k in localTokens) return@any true
+            // "AO-7" -> also match local "OSCAR 7" or "AMSAT-OSCAR 7".
+            val oscar = Regex("^([A-Z]{1,3})-(\\d+)$").find(k)
+            if (oscar != null) {
+                val num = oscar.groupValues[2]
+                if ("OSCAR $num" in localUpper || "AMSAT-OSCAR $num" in localUpper) return@any true
+            }
+            false
+        }
+    }
+
     private fun parseCSV(values: List<String>): OrbitalData? = runCatching {
         val name = values[0]
         val timestamp = values[2]

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

@@ -239,4 +239,60 @@ class DataParserTest {
         // Matches the CSV test data epoch: 2021-11-16 → day 320
         assert(dataParser.getDayOfYear(2021, 11, 16) == 320)
     }
+
+    @Test
+    fun `AMSAT FM page parses satellite names and expands thru ranges`() = runTest(testDispatcher) {
+        val html = """
+            <html><body><table>
+            <tr><th>Satellite</th><th>Uplink</th><th>Downlink</th><th>Comment</th></tr>
+            <tr><td>AO-91(RadFxSat / Fox-1B)</td><td>435.250</td><td>145.960</td></tr>
+            <tr><td>SO-50(SaudiSat-1C)</td><td>145.850</td><td>436.795</td></tr>
+            <tr><td>TEVEL2-1 thru TEVEL2-9</td><td>145.970</td><td>436.400</td></tr>
+            </table></body></html>
+        """.trimIndent().byteInputStream()
+        val names = dataParser.parseAmSatLivePage(html)
+        assert(names.contains("AO-91(RadFxSat / Fox-1B)"))
+        assert(names.contains("SO-50(SaudiSat-1C)"))
+        assert(names.contains("TEVEL2-1"))
+        assert(names.contains("TEVEL2-9"))
+        assert(names.size == 11) // 2 singles + 9 expanded TEVEL2
+    }
+
+    @Test
+    fun `AMSAT linear page keeps mode-suffixed names`() = runTest(testDispatcher) {
+        val html = """
+            <table>
+            <tr><th>Satellite</th><th>Frequencies</th><th>Comment</th></tr>
+            <tr><td>AO-7 Mode B U/v Inverting Analog</td><td>Uplink LSB</td></tr>
+            <tr><td>FO-29 (JAS-2)V/u Inverting Analog</td><td>Uplink LSB</td></tr>
+            </table>
+        """.trimIndent().byteInputStream()
+        val names = dataParser.parseAmSatLivePage(html)
+        assert(names.contains("AO-7 Mode B U/v Inverting Analog"))
+        assert(names.contains("FO-29 (JAS-2)V/u Inverting Analog"))
+    }
+
+    @Test
+    fun `AMSAT name normalization produces primary and alias keys`() {
+        assert(dataParser.normalizeAmSatName("AO-91(RadFxSat / Fox-1B)") == listOf("AO-91", "RADFXSAT", "FOX-1B"))
+        assert(dataParser.normalizeAmSatName("QO-100 (Es'hail-2/P4A) S/x") == listOf("QO-100", "ES'HAIL-2", "P4A"))
+        assert(dataParser.normalizeAmSatName("ISS") == listOf("ISS"))
+        assert(dataParser.matchesAmSatName("AO-91 (RADFXSAT)", listOf("AO-91", "RADFXSAT")))
+        assert(!dataParser.matchesAmSatName("SO-50", listOf("AO-91")))
+        // Regression: "ISS" must not substring-match "AISSAT-1" (token match only).
+        assert(dataParser.matchesAmSatName("ISS (ZARYA)", listOf("ISS")))
+        assert(!dataParser.matchesAmSatName("AISSAT-1", listOf("ISS")))
+        assert(!dataParser.matchesAmSatName("TESS", listOf("ISS")))
+        // OSCAR designators match local names spelled "OSCAR N"/"AMSAT-OSCAR N".
+        assert(dataParser.matchesAmSatName("OSCAR 7", listOf("AO-7")))
+        assert(dataParser.matchesAmSatName("AMSAT-OSCAR 7", listOf("AO-7")))
+        assert(dataParser.matchesAmSatName("CATSAT", listOf("CATSAT")))
+        assert(dataParser.matchesAmSatName("RS-44 & BREEZE-KM R/B", listOf("RS-44")))
+    }
+
+    @Test
+    fun `AMSAT live page with no table returns empty`() = runTest(testDispatcher) {
+        val html = "<html><body>No data</body></html>".byteInputStream()
+        assert(dataParser.parseAmSatLivePage(html).isEmpty())
+    }
 }

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

@@ -262,9 +262,9 @@ class LoTWGridSyncTest {
         override fun setWorkedGridQsos(qsos: Map<String, List<GridQso>>) { workedGridQsos = qsos }
         override fun getRoamedGrids(): Set<String> = roamedGrids
         override fun setRoamedGrids(grids: Set<String>) { roamedGrids = grids }
-        private var markedGridStations: Map<String, MarkedStation> = emptyMap()
-        override fun getMarkedGridStations(): Map<String, MarkedStation> = markedGridStations
-        override fun setMarkedGridStations(stations: Map<String, MarkedStation>) { markedGridStations = stations }
+        private var markedGridStations: Map<String, List<MarkedStation>> = emptyMap()
+        override fun getMarkedGridStations(): Map<String, List<MarkedStation>> = markedGridStations
+        override fun setMarkedGridStations(stations: Map<String, List<MarkedStation>>) { markedGridStations = stations }
         override fun getLastLotwSyncDate(): String = lastSyncDate
         override fun setLastLotwSyncDate(date: String) { lastSyncDate = date }
         override fun getLastLotwSyncCallsign(): String = lastSyncCallsign
@@ -283,6 +283,12 @@ class LoTWGridSyncTest {
         override fun updateOtherSettings(transform: (OtherSettings) -> OtherSettings) = TODO()
         override fun updateDataSourcesSettings(settings: DataSourcesSettings) = TODO()
         override fun updateDataSourcesStatus(status: Map<String, Int>) = TODO()
+        override fun getAmSatFmCatnums(): Set<Int> = emptySet()
+        override fun getAmSatLinearCatnums(): Set<Int> = emptySet()
+        override val amSatListsVersion: StateFlow<Int> = MutableStateFlow(0)
+        override fun setAmSatCatnums(fmCatnums: Set<Int>, linearCatnums: Set<Int>) = Unit
+        override fun getAmSatActiveCatnums(): Set<Int> = emptySet()
+        override fun setAmSatActiveCatnums(catnums: Set<Int>) = Unit
         override fun updateRadioControlSettings(settings: RadioControlSettings) = TODO()
         override fun getSatelliteOffset(catnum: Int): String = ""
         override fun setSatelliteOffset(catnum: Int, offset: String) = TODO()

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

@@ -0,0 +1,20 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <!-- 冖 (秃宝盖): 顶横 + 两侧短竖, 笔画型 -->
+    <path
+        android:pathData="M5,4 L19,4 M5,4 L5,8.5 M19,4 L19,8.5"
+        android:strokeColor="@android:color/white"
+        android:strokeWidth="2"
+        android:strokeLineCap="round"
+        android:fillColor="#00000000" />
+    <!-- 笔画型向上箭头 ↑: 竖杆 + 两斜线箭头头 -->
+    <path
+        android:pathData="M12,9 L12,20 M12,9 L7.5,14 M12,9 L16.5,14"
+        android:strokeColor="@android:color/white"
+        android:strokeWidth="2"
+        android:strokeLineCap="round"
+        android:fillColor="#00000000" />
+</vector>

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

@@ -137,6 +137,7 @@
     <string name="grid_mark_confirm">标记</string>
     <string name="grid_mark_label">标记</string>
     <string name="grid_mark_delete">删除标记</string>
+    <string name="grid_mark_pin">置顶</string>
     <string name="map_visible">日照中</string>
 
     <!-- Settings screen -->
@@ -307,6 +308,9 @@
     <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_filter_transponder">转发器</string>
+    <string name="mutual_filter_fm">FM</string>
+    <string name="mutual_filter_linear">线性</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>

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

@@ -157,6 +157,7 @@
     <string name="grid_mark_confirm">Mark</string>
     <string name="grid_mark_label">Marked</string>
     <string name="grid_mark_delete">Remove mark</string>
+    <string name="grid_mark_pin">Pin to top</string>
     <string name="map_visible">Visible</string>
 
     <!-- Settings screen -->
@@ -337,6 +338,9 @@
     <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_filter_transponder">Transponders</string>
+    <string name="mutual_filter_fm">FM</string>
+    <string name="mutual_filter_linear">Linear</string>
     <string name="mutual_calculating">Calculating…</string>
     <string name="mutual_query">Query Match</string>
     <string name="mutual_elevation_you">You: %d°</string>

feature/map/src/main/java/com/rtbishop/look4sat/feature/map/MaidenheadGridOverlay.kt

@@ -93,9 +93,10 @@ class MaidenheadGridOverlay : Overlay() {
     var workedGrids: Set<String> = emptySet()
 
     /** Marked gridsquares (4-char, uppercase) — unworked grids the user has
-     *  marked a station they want to contact in; drawn red, same alpha as the
-     *  green worked fill. Value carries the marked callsign for label mode. */
-    var markedGrids: Map<String, com.rtbishop.look4sat.core.domain.model.MarkedStation> = emptyMap()
+     *  marked stations they want to contact in; drawn red, same alpha as the
+     *  green worked fill. Value is the ordered mark list (first = pinned);
+     *  label mode shows the FIRST marked callsign. */
+    var markedGrids: Map<String, List<com.rtbishop.look4sat.core.domain.model.MarkedStation>> = emptyMap()
 
     /** Grid-mode first-call labels: label worked (green) cells with the first
      *  callsign worked in that grid instead of the Maidenhead code; non-worked
@@ -449,7 +450,7 @@ class MaidenheadGridOverlay : Overlay() {
                         label in workedGrids -> firstCallsByGrid[label]?.let { call ->
                             canvas.drawText(call, (xLeft + xRight) / 2f, yCenter, firstCallPaint)
                         }
-                        label in markedGrids -> markedGrids[label]?.let { station ->
+                        label in markedGrids -> markedGrids[label]?.firstOrNull()?.let { station ->
                             canvas.drawText(station.call, (xLeft + xRight) / 2f, yCenter, firstCallPaint)
                         }
                     }

feature/map/src/main/java/com/rtbishop/look4sat/feature/map/MapScreen.kt

@@ -429,13 +429,14 @@ private fun MapScreen(
         WorkedGridQsoDialog(
             grid = grid,
             qsos = uiState.workedGridQsos[grid].orEmpty().sortedBy { it.epochMs },
-            marked = uiState.markedGrids[grid],
+            marked = uiState.markedGrids[grid].orEmpty(),
             isUtc = uiState.isUtc,
             matchCalculating = matchCalculating,
             onDismiss = { selectedGrid = null },
             onMatch = { onMatchGrid(grid) },
             onMark = { call -> onAction(MapAction.SetMarkedStation(grid, call)) },
-            onRemoveMark = { onAction(MapAction.RemoveMarkedStation(grid)) }
+            onRemoveMark = { call -> onAction(MapAction.RemoveMarkedStation(grid, call)) },
+            onPinMark = { call -> onAction(MapAction.PinMarkedStation(grid, call)) }
         )
     }
 }
@@ -446,13 +447,14 @@ private fun MapScreen(
 private fun WorkedGridQsoDialog(
     grid: String,
     qsos: List<com.rtbishop.look4sat.core.domain.model.GridQso>,
-    marked: com.rtbishop.look4sat.core.domain.model.MarkedStation?,
+    marked: List<com.rtbishop.look4sat.core.domain.model.MarkedStation>,
     isUtc: Boolean,
     matchCalculating: Boolean,
     onDismiss: () -> Unit,
     onMatch: () -> Unit,
     onMark: (String) -> Unit,
-    onRemoveMark: () -> Unit
+    onRemoveMark: (String) -> Unit,
+    onPinMark: (String) -> Unit
 ) {
     var showMarkInput by remember { mutableStateOf(false) }
     var callInput by remember { mutableStateOf("") }
@@ -512,11 +514,20 @@ private fun WorkedGridQsoDialog(
                         .heightIn(max = 380.dp)
                         .verticalScroll(rememberScrollState())
                 ) {
-                    // A marked station shows first as a red reminder row: red
-                    // callsign, "标记" in the count column, the marking date in
-                    // the date column, and a small delete icon to remove it.
-                    if (marked != null) {
-                        MarkedStationRow(marked = marked, isUtc = isUtc, onRemoveMark = onRemoveMark)
+                    // Marked stations show first as red reminder rows: pale-yellow
+                    // callsign, "标记" in the count column, the marking date in the
+                    // date column, a small pin icon (first = pinned, grey; others
+                    // pale yellow) and a delete icon to remove the mark.
+                    val showPin = marked.size > 1
+                    marked.forEachIndexed { index, station ->
+                        MarkedStationRow(
+                            marked = station,
+                            isPinned = index == 0,
+                            showPin = showPin,
+                            isUtc = isUtc,
+                            onRemoveMark = { onRemoveMark(station.call) },
+                            onPinMark = { onPinMark(station.call) }
+                        )
                         androidx.compose.material3.HorizontalDivider(color = MaterialTheme.colorScheme.outlineVariant.copy(alpha = 0.3f))
                     }
                     if (qsos.isNotEmpty()) {
@@ -535,7 +546,7 @@ private fun WorkedGridQsoDialog(
                     if (qsos.isEmpty()) {
                         TextButton(
                             onClick = {
-                                callInput = marked?.call.orEmpty()
+                                callInput = ""
                                 showMarkInput = true
                             },
                             modifier = Modifier.fillMaxWidth()
@@ -585,8 +596,11 @@ private fun WorkedGridQsoDialog(
 @Composable
 private fun MarkedStationRow(
     marked: com.rtbishop.look4sat.core.domain.model.MarkedStation,
+    isPinned: Boolean,
+    showPin: Boolean,
     isUtc: Boolean,
-    onRemoveMark: () -> Unit
+    onRemoveMark: () -> Unit,
+    onPinMark: () -> Unit
 ) {
     Row(
         verticalAlignment = Alignment.CenterVertically,
@@ -596,18 +610,37 @@ private fun MarkedStationRow(
             text = marked.call,
             style = MaterialTheme.typography.titleMedium,
             fontFamily = androidx.compose.ui.text.font.FontFamily.Monospace,
-            color = ComposeColor(0xFFFF3B30),
+            color = ComposeColor(0xFFFFE082),
             maxLines = 1,
             overflow = androidx.compose.ui.text.style.TextOverflow.Ellipsis,
             modifier = Modifier.weight(1f)
         )
-        Text(
-            text = stringResource(R.string.grid_mark_label),
-            style = MaterialTheme.typography.bodySmall,
-            color = MaterialTheme.colorScheme.onSurfaceVariant,
-            textAlign = androidx.compose.ui.text.style.TextAlign.Center,
+        // "标记" column: pin icon (only when the grid has multiple marks) sits
+        // left of the label; pinned (first) row's icon is grey, others pale
+        // yellow — tapping moves that mark to the top.
+        Row(
+            verticalAlignment = Alignment.CenterVertically,
+            horizontalArrangement = Arrangement.Center,
             modifier = Modifier.weight(1f)
-        )
+        ) {
+            if (showPin) {
+                Icon(
+                    painter = painterResource(R.drawable.ic_pin),
+                    contentDescription = stringResource(R.string.grid_mark_pin),
+                    tint = if (isPinned) ComposeColor(0xFF9E9E9E) else ComposeColor(0xFFFFE082),
+                    modifier = Modifier
+                        .size(18.dp)
+                        .clickable(onClick = onPinMark)
+                )
+                Spacer(Modifier.width(2.dp))
+            }
+            Text(
+                text = stringResource(R.string.grid_mark_label),
+                style = MaterialTheme.typography.bodySmall,
+                color = MaterialTheme.colorScheme.onSurfaceVariant,
+                textAlign = androidx.compose.ui.text.style.TextAlign.Center
+            )
+        }
         Row(
             verticalAlignment = Alignment.CenterVertically,
             horizontalArrangement = Arrangement.End,
@@ -1056,7 +1089,7 @@ private fun setGridMode(
     centerOnStation: Boolean = false,
     showFirstCallLabels: Boolean = false,
     firstCallsByGrid: Map<String, String> = emptyMap(),
-    markedGrids: Map<String, com.rtbishop.look4sat.core.domain.model.MarkedStation> = emptyMap()
+    markedGrids: Map<String, List<com.rtbishop.look4sat.core.domain.model.MarkedStation>> = emptyMap()
 ) {
     try {
         val gridOverlay = mapView.overlays[OVERLAY_GRID]

feature/map/src/main/java/com/rtbishop/look4sat/feature/map/MapState.kt

@@ -34,8 +34,9 @@ data class MapState(
     val workedGridQsos: Map<String, List<com.rtbishop.look4sat.core.domain.model.GridQso>> = emptyMap(),
     /** 4-char gridsquares the station operated from (LoTW MY_GRIDSQUARE) — blue stripes. */
     val roamedGrids: Set<String> = emptySet(),
-    /** Stations the user marked in unworked gridsquares (grid -> mark) — red fill. */
-    val markedGrids: Map<String, com.rtbishop.look4sat.core.domain.model.MarkedStation> = emptyMap(),
+    /** Stations the user marked in unworked gridsquares (grid -> ordered list;
+     *  first = pinned/top) — red fill. */
+    val markedGrids: Map<String, List<com.rtbishop.look4sat.core.domain.model.MarkedStation>> = emptyMap(),
     val stationPosition: GeoPos? = null,
     val orbitalPass: OrbitalPass,
     val track: List<List<GeoPos>>? = null,
@@ -55,7 +56,8 @@ sealed interface MapAction {
     data class ToggleGridMode(val value: Boolean) : MapAction
     data class ToggleFirstCallLabels(val value: Boolean) : MapAction
     data class SetMarkedStation(val grid: String, val call: String) : MapAction
-    data class RemoveMarkedStation(val grid: String) : MapAction
+    data class RemoveMarkedStation(val grid: String, val call: String) : MapAction
+    data class PinMarkedStation(val grid: String, val call: String) : MapAction
     data class SetVisible(val isVisible: Boolean) : MapAction
 }
 

feature/map/src/main/java/com/rtbishop/look4sat/feature/map/MapViewModel.kt

@@ -121,19 +121,37 @@ class MapViewModel(
             is MapAction.ToggleGridMode -> settingsRepo.updateOtherSettings { it.copy(stateOfMapGrid = action.value) }
             is MapAction.ToggleFirstCallLabels -> settingsRepo.updateOtherSettings { it.copy(stateOfMapFirstCall = action.value) }
             is MapAction.SetMarkedStation -> {
-                val updated = settingsRepo.getMarkedGridStations() +
-                    (action.grid to com.rtbishop.look4sat.core.domain.model.MarkedStation(
-                        call = action.call.trim().uppercase(),
-                        epochMs = System.currentTimeMillis()
-                    ))
+                val call = action.call.trim().uppercase()
+                val existing = settingsRepo.getMarkedGridStations()
+                val current = existing[action.grid].orEmpty()
+                // 重复呼号忽略: 同一网格已标记过的呼号不再重复添加.
+                val updated = if (current.any { it.call == call }) existing
+                else existing + (action.grid to current + com.rtbishop.look4sat.core.domain.model.MarkedStation(
+                    call = call,
+                    epochMs = System.currentTimeMillis()
+                ))
                 settingsRepo.setMarkedGridStations(updated)
                 _uiState.update { it.copy(markedGrids = updated) }
             }
             is MapAction.RemoveMarkedStation -> {
-                val updated = settingsRepo.getMarkedGridStations() - action.grid
+                val existing = settingsRepo.getMarkedGridStations()
+                val current = existing[action.grid].orEmpty()
+                val remaining = current.filterNot { it.call == action.call }
+                val updated = if (remaining.isEmpty()) existing - action.grid
+                else existing + (action.grid to remaining)
                 settingsRepo.setMarkedGridStations(updated)
                 _uiState.update { it.copy(markedGrids = updated) }
             }
+            is MapAction.PinMarkedStation -> {
+                val existing = settingsRepo.getMarkedGridStations()
+                val current = existing[action.grid].orEmpty()
+                val target = current.firstOrNull { it.call == action.call }
+                if (target != null) {
+                    val updated = existing + (action.grid to listOf(target) + current.filterNot { it.call == action.call })
+                    settingsRepo.setMarkedGridStations(updated)
+                    _uiState.update { it.copy(markedGrids = updated) }
+                }
+            }
             is MapAction.SetVisible -> isScreenVisible.value = action.isVisible
         }
     }

feature/mutual/src/main/java/com/rtbishop/look4sat/feature/mutual/MutualScreen.kt

@@ -174,6 +174,8 @@ fun MutualScreen(
             onStationBMinElev = viewModel::onStationBMinElev,
             onUseCurrentPosition = viewModel::onUseCurrentPosition,
             onHoursAhead = viewModel::onHoursAhead,
+            onFilterFM = viewModel::onFilterFM,
+            onFilterLinear = viewModel::onFilterLinear,
             onClearError = viewModel::clearError
         )
     }
@@ -197,6 +199,8 @@ private fun MutualContent(
     onStationBMinElev: (Double) -> Unit,
     onUseCurrentPosition: () -> Unit,
     onHoursAhead: (Int) -> Unit,
+    onFilterFM: (Boolean) -> Unit,
+    onFilterLinear: (Boolean) -> Unit,
     onClearError: () -> Unit
 ) {
     val timeFormat = remember(state.isUtc) {
@@ -353,6 +357,10 @@ private fun MutualContent(
             MatchSearchCard(
                 hoursAhead = state.hoursAhead,
                 isCalculating = state.isCalculating,
+                filterFM = state.filterFM,
+                filterLinear = state.filterLinear,
+                onFilterFM = onFilterFM,
+                onFilterLinear = onFilterLinear,
                 onHoursAhead = onHoursAhead,
                 onQuery = onQuery
             )
@@ -570,6 +578,10 @@ private fun StationInputCard(
 private fun MatchSearchCard(
     hoursAhead: Int,
     isCalculating: Boolean,
+    filterFM: Boolean,
+    filterLinear: Boolean,
+    onFilterFM: (Boolean) -> Unit,
+    onFilterLinear: (Boolean) -> Unit,
     onHoursAhead: (Int) -> Unit,
     onQuery: () -> Unit,
     modifier: Modifier = Modifier
@@ -596,6 +608,28 @@ private fun MatchSearchCard(
                     )
                 }
             }
+            // 转发器类型筛选: 只匹配 AMSAT Live 清单里的 FM 话音 / 线性转发器卫星,
+            // 防止选入大量无转发器卫星占用匹配页.
+            Row(
+                modifier = Modifier.fillMaxWidth(),
+                horizontalArrangement = Arrangement.spacedBy(8.dp),
+                verticalAlignment = Alignment.CenterVertically
+            ) {
+                Text(
+                    text = stringResource(R.string.mutual_filter_transponder),
+                    style = MaterialTheme.typography.labelLarge
+                )
+                FilterChip(
+                    selected = filterFM,
+                    onClick = { onFilterFM(!filterFM) },
+                    label = { Text(stringResource(R.string.mutual_filter_fm)) }
+                )
+                FilterChip(
+                    selected = filterLinear,
+                    onClick = { onFilterLinear(!filterLinear) },
+                    label = { Text(stringResource(R.string.mutual_filter_linear)) }
+                )
+            }
             Button(
                 onClick = onQuery,
                 enabled = !isCalculating,

feature/mutual/src/main/java/com/rtbishop/look4sat/feature/mutual/MutualViewModel.kt

@@ -55,6 +55,10 @@ data class MutualUiState(
     /** 历史过境回看窗口(小时), 跟随主页面 Passes 设置; 匹配查询从
      *  now-hoursBefore 开始, 使设置过历史回看时匹配页也包含历史过境. */
     val hoursBefore: Int = 0,
+    /** 转发器类型筛选: 只匹配搭载 FM 话音转发器的卫星. 默认开启. */
+    val filterFM: Boolean = true,
+    /** 转发器类型筛选: 只匹配搭载线性(USB/LSB/CW/SSB)转发器的卫星. 默认开启. */
+    val filterLinear: Boolean = true,
     val mutualPasses: List<MutualPass> = emptyList(),
     val isCalculating: Boolean = false,
     val hasSearched: Boolean = false,
@@ -201,6 +205,8 @@ class MutualViewModel(
         ) }
     }
     fun onHoursAhead(value: Int) = _uiState.update { it.copy(hoursAhead = value) }
+    fun onFilterFM(value: Boolean) = _uiState.update { it.copy(filterFM = value) }
+    fun onFilterLinear(value: Boolean) = _uiState.update { it.copy(filterLinear = value) }
     fun onSelectPass(index: Int) = _uiState.update { it.copy(selectedPassIndex = index) }
 
     /**
@@ -264,6 +270,17 @@ class MutualViewModel(
             return
         }
 
+        // 转发器类型筛选: 至少勾选一种(默认 FM + Linear 都开), 否则提示不查询.
+        // 防止用户选入大量无转发器卫星占用匹配页.
+        if (!state.filterFM && !state.filterLinear) {
+            _uiState.update { it.copy(errorMessage = "Select at least one transponder type (FM / Linear) to run the match.") }
+            return
+        }
+        // AMSAT Live 清单(同步自 AMSAT "Live FM/Linear Satellites" 页面)是本过滤的
+        // 权威来源: 只匹配当前在轨且话音/线性转发器实际工作的卫星. 清单为空
+        // (从未成功同步过)时回退到数据库 downlinkMode 过滤, 避免首启匹配页空结果.
+        // 过滤本身在下面的协程里执行 (getSatelliteIdsWithModes 是 suspend).
+
         _uiState.update {
             it.copy(
                 isCalculating = true,
@@ -286,6 +303,27 @@ class MutualViewModel(
 
         viewModelScope.launch {
             val now = System.currentTimeMillis()
+            // 转发器类型过滤(协程上下文): AMSAT Live 清单优先, 为空时回退数据库.
+            val amSatFm = settingsRepo.getAmSatFmCatnums()
+            val amSatLinear = settingsRepo.getAmSatLinearCatnums()
+            val filteredSatellites = if (amSatFm.isEmpty() && amSatLinear.isEmpty()) {
+                // 回退到数据库模式过滤: 只用带上行频率的转发器记录, 排除纯下行
+                // 信标/遥测(如 CW 信标、FM 语音合成信标), 避免 ISS/IO-86/FO-29 等
+                // 因共享模式标签(CW/FM)被误判进错误类别.
+                val filterModes = buildList {
+                    if (state.filterFM) add("FM")
+                    if (state.filterLinear) addAll(listOf("USB", "LSB", "CW", "SSB"))
+                }
+                val idsWithModes = satelliteRepo.getSatelliteIdsWithModesAndUplink(filterModes)
+                if (idsWithModes.isEmpty()) satellites
+                else satellites.filter { it.data.catnum in idsWithModes }
+            } else {
+                val allowed = buildSet {
+                    if (state.filterFM) addAll(amSatFm)
+                    if (state.filterLinear) addAll(amSatLinear)
+                }
+                satellites.filter { it.data.catnum in allowed }
+            }
             // 历史回看: 查询窗口起点 = now - hoursBefore (跟随主页面 Passes 设置),
             // 终点 = now + hoursAhead 不变.
             val time = now - state.hoursBefore * 60L * 60L * 1000L
@@ -295,7 +333,7 @@ class MutualViewModel(
 
             val results = try {
                 withContext(computeDispatcher) {
-                    findMutualPasses(satellites, posA, posB, minElevA, minElevB, time, hours, state.hoursBefore)
+                    findMutualPasses(filteredSatellites, posA, posB, minElevA, minElevB, time, hours, state.hoursBefore)
                 }
             } catch (t: Throwable) {
                 // Never leave the query stuck in "calculating" (which would also
@@ -350,7 +388,10 @@ class MutualViewModel(
         // Use the main page's pass list for AOS/LOS times, then sample the curves
         // using the actual positions. The passes list is already computed by getLeoPass
         // and its AOS/LOS times match the Passes page exactly.
-        val existingPasses = satelliteRepo.passes.value
+        // The satellites argument may be a subset (transponder-type filter), so
+        // only passes belonging to the filtered satellites are reused.
+        val allowedCatnums = satellites.map { it.data.catnum }.toSet()
+        val existingPasses = satelliteRepo.passes.value.filter { it.catNum in allowedCatnums }
         val results = findMutualPassesFromList(existingPasses, satellites, posA, posB,
             minElevADeg, minElevBDeg, time, endTime, sampleInterval)
         if (results.isNotEmpty()) return results

feature/mutual/src/test/java/com/rtbishop/look4sat/feature/mutual/Fakes.kt

@@ -44,13 +44,20 @@ class FakeSatelliteRepo(
     override suspend fun getTrack(sat: OrbitalObject, pos: GeoPos, start: Long, end: Long): List<OrbitalPos> = TODO()
     override suspend fun getRadios(sat: OrbitalObject, pos: GeoPos, radios: List<SatRadio>, time: Long): List<SatRadio> = TODO()
     override suspend fun getRadiosWithId(id: Int): List<SatRadio> = TODO()
+    override suspend fun getSatelliteIdsWithModes(modes: List<String>): List<Int> = emptyList()
+    override suspend fun getSatelliteIdsWithModesAndUplink(modes: List<String>): List<Int> = emptyList()
+    override suspend fun getSatelliteIdsWithModesAndAmateur(modes: List<String>): List<Int> = emptyList()
 }
 
 /**
  * Test fake for ISettingsRepo. Only [stationPosition] is backed by mutable
  * state; everything else the ViewModel never touches fails loudly.
  */
-class FakeSettingsRepo(initialPosition: GeoPos = GeoPos(23.13, 113.26)) : ISettingsRepo {
+class FakeSettingsRepo(
+    initialPosition: GeoPos = GeoPos(23.13, 113.26),
+    val amSatFm: Set<Int> = emptySet(),
+    val amSatLinear: Set<Int> = emptySet()
+) : ISettingsRepo {
 
     override val stationPosition = MutableStateFlow(initialPosition)
 
@@ -103,6 +110,13 @@ class FakeSettingsRepo(initialPosition: GeoPos = GeoPos(23.13, 113.26)) : ISetti
 
     override fun updateDataSourcesStatus(status: Map<String, Int>) = TODO()
 
+    override fun getAmSatFmCatnums(): Set<Int> = amSatFm
+    override fun getAmSatLinearCatnums(): Set<Int> = amSatLinear
+    override val amSatListsVersion: StateFlow<Int> = MutableStateFlow(0)
+    override fun setAmSatCatnums(fmCatnums: Set<Int>, linearCatnums: Set<Int>) = TODO()
+    override fun getAmSatActiveCatnums(): Set<Int> = emptySet()
+    override fun setAmSatActiveCatnums(catnums: Set<Int>) = TODO()
+
     override fun updateRadioControlSettings(settings: RadioControlSettings) = TODO()
     override fun getSatelliteOffset(catnum: Int): String = ""
     override fun setSatelliteOffset(catnum: Int, offset: String) = TODO()
@@ -115,8 +129,8 @@ class FakeSettingsRepo(initialPosition: GeoPos = GeoPos(23.13, 113.26)) : ISetti
     override fun setWorkedGridQsos(qsos: Map<String, List<GridQso>>) = TODO()
     override fun getRoamedGrids(): Set<String> = TODO()
     override fun setRoamedGrids(grids: Set<String>) = TODO()
-    override fun getMarkedGridStations(): Map<String, com.rtbishop.look4sat.core.domain.model.MarkedStation> = emptyMap()
-    override fun setMarkedGridStations(stations: Map<String, com.rtbishop.look4sat.core.domain.model.MarkedStation>) = Unit
+    override fun getMarkedGridStations(): Map<String, List<com.rtbishop.look4sat.core.domain.model.MarkedStation>> = emptyMap()
+    override fun setMarkedGridStations(stations: Map<String, List<com.rtbishop.look4sat.core.domain.model.MarkedStation>>) = Unit
     override fun updateLoTWSettings(settings: LoTWSettings) = TODO()
     override fun getLastLotwSyncDate(): String = ""
     override fun setLastLotwSyncDate(date: String) = Unit

feature/mutual/src/test/java/com/rtbishop/look4sat/feature/mutual/MutualViewModelTest.kt

@@ -31,10 +31,12 @@ class MutualViewModelTest {
     private fun TestScope.createVm(
         satellites: List<OrbitalObject> = emptyList(),
         passes: List<OrbitalPass> = emptyList(),
-        position: GeoPos = TestOrbits.GUANGZHOU
+        position: GeoPos = TestOrbits.GUANGZHOU,
+        amSatFm: Set<Int> = emptySet(),
+        amSatLinear: Set<Int> = emptySet()
     ): MutualViewModel = MutualViewModel(
         satelliteRepo = FakeSatelliteRepo(satellites, passes),
-        settingsRepo = FakeSettingsRepo(position),
+        settingsRepo = FakeSettingsRepo(position, amSatFm, amSatLinear),
         computeDispatcher = StandardTestDispatcher(mainDispatcherRule.dispatcher.scheduler)
     )
 
@@ -320,4 +322,67 @@ class MutualViewModelTest {
         assertEquals(4, vm.listScrollIndex)
         assertEquals(137, vm.listScrollOffset)
     }
+
+    // --------------------------------------------- transponder filters (AMSAT)
+
+    @Test
+    fun `both filters off sets an error and does not search`() = runTest(mainDispatcherRule.dispatcher.scheduler) {
+        val windows = TestOrbits.findPassWindows()
+        val vm = createVm(satellites = listOf(TestOrbits.ISS), passes = windows)
+        vm.onStationBGrid("OL62")
+        vm.onFilterFM(false)
+        vm.onFilterLinear(false)
+
+        queryAndSettle(vm)
+
+        assertEquals(
+            "Select at least one transponder type (FM / Linear) to run the match.",
+            vm.uiState.value.errorMessage
+        )
+        assertFalse(vm.uiState.value.hasSearched)
+    }
+
+    @Test
+    fun `AMSAT filter restricts results to listed catnums`() = runTest(mainDispatcherRule.dispatcher.scheduler) {
+        val windows = TestOrbits.findPassWindows(hoursAhead = 24) +
+            TestOrbits.findPassWindows(sat = TestOrbits.ISS_VARIANT, hoursAhead = 24)
+        assertTrue("fixture must produce windows", windows.isNotEmpty())
+        // Only ISS (25544) is on the AMSAT live FM list; ISS_VARIANT (25545) is not.
+        val vm = createVm(
+            satellites = listOf(TestOrbits.ISS, TestOrbits.ISS_VARIANT),
+            passes = windows,
+            amSatFm = setOf(25544)
+        )
+        vm.onStationBGrid("OL62")
+        vm.onHoursAhead(24)
+
+        queryAndSettle(vm)
+
+        val state = vm.uiState.value
+        assertNull(state.errorMessage)
+        assertTrue(state.mutualPasses.isNotEmpty())
+        assertTrue("only AMSAT-listed satellites should appear", state.mutualPasses.all { it.catNum == 25544 })
+    }
+
+    @Test
+    fun `AMSAT filter off for one type excludes its satellites`() = runTest(mainDispatcherRule.dispatcher.scheduler) {
+        val windows = TestOrbits.findPassWindows(hoursAhead = 24) +
+            TestOrbits.findPassWindows(sat = TestOrbits.ISS_VARIANT, hoursAhead = 24)
+        // FM filter off, Linear on: neither sat is linear-listed -> nothing matches.
+        val vm = createVm(
+            satellites = listOf(TestOrbits.ISS, TestOrbits.ISS_VARIANT),
+            passes = windows,
+            amSatFm = setOf(25544),
+            amSatLinear = setOf(25545)
+        )
+        vm.onStationBGrid("OL62")
+        vm.onHoursAhead(24)
+        vm.onFilterFM(false)
+
+        queryAndSettle(vm)
+
+        val state = vm.uiState.value
+        assertNull(state.errorMessage)
+        assertTrue("only linear-listed satellites should appear", state.mutualPasses.all { it.catNum == 25545 })
+    }
 }

feature/satellites/src/main/java/com/rtbishop/look4sat/feature/satellites/SatellitesDialog.kt

@@ -42,6 +42,7 @@ import androidx.compose.ui.unit.dp
 import com.rtbishop.look4sat.core.presentation.MainTheme
 import com.rtbishop.look4sat.core.presentation.R
 import com.rtbishop.look4sat.core.presentation.SharedDialog
+import com.rtbishop.look4sat.core.domain.source.Sources
 
 @Preview(showBackground = true)
 @Composable
@@ -54,9 +55,20 @@ private fun MultiTypesDialogPreview() {
 internal fun MultiTypesDialog(
     allTypes: List<String>, types: List<String>, cancel: () -> Unit, accept: (List<String>) -> Unit
 ) {
+    // 虚拟类型(转发器/活动筛选)与普通 TLE 源类型互斥: 勾虚拟类型时取消普通类型,
+    // 勾普通类型时取消虚拟类型. 虚拟类型之间可多选组合.
+    val virtualTypes = Sources.virtualTypeNames
     val selected = remember { mutableStateOf(types.toSet()) }
     val toggle = { type: String ->
-        selected.value = if (type in selected.value) selected.value - type else selected.value + type
+        selected.value = if (type in selected.value) {
+            selected.value - type
+        } else if (type in virtualTypes) {
+            // 勾选虚拟类型: 移除所有普通类型, 保留已勾的虚拟类型.
+            (selected.value.filterTo(mutableSetOf()) { it in virtualTypes }) + type
+        } else {
+            // 勾选普通类型: 移除所有虚拟类型, 保留已勾的普通类型.
+            (selected.value.filterTo(mutableSetOf()) { it !in virtualTypes }) + type
+        }
     }
     val onAccept = { accept(selected.value.toList()) }
     SharedDialog(title = stringResource(R.string.sat_type_title), onCancel = cancel, onAccept = onAccept) {

feature/satellites/src/main/java/com/rtbishop/look4sat/feature/satellites/SatellitesScreen.kt

@@ -177,6 +177,7 @@ private fun SatellitesScreen(
                 )
             }
         }
+        // 转发器/活动筛选已在"卫星类型"对话框前三个选项中体现(AMSAT Live FM/Linear, Live SSTV).
         ElevatedCard(modifier = Modifier.fillMaxSize()) {
             val emptyMessage = stringResource(R.string.sat_empty_list_message)
             when {

gradle/libs.versions.toml

@@ -1,8 +1,8 @@
 [versions]
 #noinspection UnusedVersionCatalogEntry
-appVersionCode = "495"
+appVersionCode = "505"
 #noinspection UnusedVersionCatalogEntry
-appVersionName = "4.4.7-ba7opf.14.1"
+appVersionName = "4.4.7-ba7opf.15.8"
 #noinspection UnusedVersionCatalogEntry
 compileSdk = "37"
 #noinspection UnusedVersionCatalogEntry