Fixed SSTV frequency display and "All" category retention

feature/radar/src/main/java/com/rtbishop/look4sat/feature/radar/RadarViewModel.kt

@@ -320,10 +320,8 @@ class RadarViewModel(
 
     private suspend fun processRadios(radios: List<SatRadio>, orbitalObject: OrbitalObject, time: Long) {
         val transmitters = satelliteRepo.getRadios(orbitalObject, stationPos, radios, time)
-        val isFreqEnabled =
-            settingsRepo.rcSettings.value.frequencyState || settingsRepo.rcSettings.value.bluetoothFrequencyState
         _uiState.update { state ->
-            val freq = if (isFreqEnabled && state.transceivers.selectedUuid != null) {
+            val freq = if (state.transceivers.selectedUuid != null) {
                 val selectedRadio = transmitters.firstOrNull { it.uuid == state.transceivers.selectedUuid }
                 selectedRadio?.let { radio ->
                     val low = radio.downlinkLow

feature/radar/src/main/java/com/rtbishop/look4sat/feature/radar/SstvPage.kt

@@ -190,16 +190,14 @@ internal fun SstvPage(
             verticalArrangement = Arrangement.spacedBy(2.dp)
         ) {
             // Doppler-corrected downlink frequency hint
-            if (dopplerFrequency != null) {
-                OutlinedText(
-                    text = "RX: $dopplerFrequency Hz",
-                    fontSize = 18.sp,
-                    fontWeight = FontWeight.Bold,
-                    fillColor = MaterialTheme.colorScheme.primary,
-                    outlineColor = MaterialTheme.colorScheme.background,
-                    modifier = Modifier.align(Alignment.CenterHorizontally)
-                )
-            }
+            OutlinedText(
+                text = dopplerFrequency?.let { "RX: $it Hz" } ?: "No transceiver selected",
+                fontSize = 18.sp,
+                fontWeight = FontWeight.Bold,
+                fillColor = MaterialTheme.colorScheme.primary,
+                outlineColor = MaterialTheme.colorScheme.background,
+                modifier = Modifier.align(Alignment.CenterHorizontally)
+            )
             Row(
                 verticalAlignment = Alignment.CenterVertically,
                 horizontalArrangement = Arrangement.spacedBy(8.dp),