diff --git a/app/src/main/java/com/rtbishop/look4sat/presentation/common/Components.kt b/app/src/main/java/com/rtbishop/look4sat/presentation/common/Components.kt
index 73c042a0..6c18ef7a 100644
--- a/app/src/main/java/com/rtbishop/look4sat/presentation/common/Components.kt
+++ b/app/src/main/java/com/rtbishop/look4sat/presentation/common/Components.kt
@@ -330,6 +330,40 @@ fun InfoDialog(title: String, text: String, onDismiss: () -> Unit) {
     }
 }
 
+@Composable
+fun InfoDialog(
+    title: String,
+    onDismiss: () -> Unit,
+    content: @Composable () -> Unit
+) {
+    val padding = LocalSpacing.current.large
+
+    Dialog(onDismissRequest = onDismiss) {
+        ElevatedCard {
+            Column(
+                horizontalAlignment = Alignment.CenterHorizontally,
+                verticalArrangement = Arrangement.spacedBy(padding)
+            ) {
+                Text(
+                    text = title,
+                    fontSize = 18.sp,
+                    fontWeight = FontWeight.Medium,
+                    color = MaterialTheme.colorScheme.primary,
+                    modifier = Modifier.padding(start = padding, top = padding, end = padding)
+                )
+                content()
+                Row(modifier = Modifier.padding(start = padding, bottom = padding, end = padding)) {
+                    Spacer(modifier = Modifier.weight(1f))
+                    CardButton(
+                        onClick = onDismiss,
+                        text = stringResource(id = R.string.btn_cancel)
+                    )
+                }
+            }
+        }
+    }
+}
+
 @Composable
 fun hasEnoughHeight(): Boolean {
     return currentWindowAdaptiveInfo().windowSizeClass.isHeightAtLeastBreakpoint(480)
diff --git a/app/src/main/java/com/rtbishop/look4sat/presentation/settings/SettingsDialog.kt b/app/src/main/java/com/rtbishop/look4sat/presentation/settings/SettingsDialog.kt
index e47269e4..f13958cf 100644
--- a/app/src/main/java/com/rtbishop/look4sat/presentation/settings/SettingsDialog.kt
+++ b/app/src/main/java/com/rtbishop/look4sat/presentation/settings/SettingsDialog.kt
@@ -27,6 +27,18 @@ import androidx.compose.ui.tooling.preview.Preview
 import com.rtbishop.look4sat.R
 import com.rtbishop.look4sat.presentation.MainTheme
 import com.rtbishop.look4sat.presentation.common.SharedDialog
+import com.rtbishop.look4sat.presentation.common.InfoDialog
+import com.rtbishop.look4sat.presentation.common.CardButton
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.padding
+import androidx.compose.material3.Switch
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import com.rtbishop.look4sat.presentation.LocalSpacing
 
 @Preview(showBackground = true)
 @Composable
@@ -71,3 +83,132 @@ fun LocatorDialog(qthLocator: String, dismiss: () -> Unit, save: (String) -> Uni
         OutlinedTextField(value = locator.value, onValueChange = { locator.value = it })
     }
 }
+
+@Preview(showBackground = true)
+@Composable
+private fun ImportDialogPreview() = MainTheme {
+    ImportDialog(
+        onImportTle = {},
+        onImportTransceivers = {},
+        onDismiss = {}
+    )
+}
+
+@Composable
+fun ImportDialog(
+    onImportTle: () -> Unit,
+    onImportTransceivers: () -> Unit,
+    onDismiss: () -> Unit
+) {
+    val padding = LocalSpacing.current.large
+    InfoDialog(
+        title = stringResource(R.string.prefs_data_import),
+        onDismiss = onDismiss
+    ) {
+        Row(
+            horizontalArrangement = Arrangement.spacedBy(12.dp),
+            modifier = Modifier
+                .padding(horizontal = padding)
+                .fillMaxWidth()
+        ) {
+            CardButton(
+                onClick = {
+                    onImportTle()
+                    onDismiss()
+                },
+                text = "TLE",
+                modifier = Modifier.weight(0.7f)
+            )
+            CardButton(
+                onClick = {
+                    onImportTransceivers()
+                    onDismiss()
+                },
+                text = "Transceivers",
+                modifier = Modifier.weight(1.3f)
+            )
+        }
+    }
+}
+
+@Preview(showBackground = true)
+@Composable
+private fun TransceiversDialogPreview() {
+    MainTheme {
+        DataSourcesDialog(
+            useCustomTle = true,
+            useCustomTransceivers = true,
+            tleUrl = "https://example.com/tle.txt",
+            transceiversUrl = "https://example.com/tx.json",
+            dismiss = {},
+            onSave = { _, _, _, _ -> }
+        )
+    }
+}
+
+@Composable
+fun DataSourcesDialog(
+    useCustomTle: Boolean,
+    useCustomTransceivers: Boolean,
+    tleUrl: String,
+    transceiversUrl: String,
+    dismiss: () -> Unit,
+    onSave: (Boolean, Boolean, String, String) -> Unit
+) {
+    val padding = LocalSpacing.current.large
+    val isEnabledCustomTle = rememberSaveable { mutableStateOf(useCustomTle) }
+    val isEnabledCustomTransceivers = rememberSaveable { mutableStateOf(useCustomTransceivers) }
+    val urlTle = rememberSaveable { mutableStateOf(tleUrl) }
+    val urlTransceivers = rememberSaveable { mutableStateOf(transceiversUrl) }
+    val onAccept = {
+        onSave(isEnabledCustomTle.value, isEnabledCustomTransceivers.value, urlTle.value, urlTransceivers.value)
+        dismiss()
+    }
+    val onCancel = { dismiss() }
+    SharedDialog(
+        title = stringResource(id = R.string.prefs_data_sources_title),
+        onCancel = onCancel,
+        onAccept = onAccept,
+    ) {
+        Column(modifier = Modifier.padding(horizontal = padding)) {
+            Row(
+                horizontalArrangement = Arrangement.SpaceBetween,
+                verticalAlignment = Alignment.CenterVertically,
+                modifier = Modifier.fillMaxWidth()
+            ) {
+                Text(text = stringResource(id = R.string.prefs_data_sources_tle_switch))
+                Switch(
+                    checked = isEnabledCustomTle.value,
+                    onCheckedChange = { isEnabledCustomTle.value = it }
+                )
+            }
+            OutlinedTextField(
+                value = urlTle.value,
+                onValueChange = { urlTle.value = it },
+                label = { Text(text = stringResource(id = R.string.prefs_data_sources_url_title)) },
+                singleLine = true,
+                modifier = Modifier.fillMaxWidth(),
+                enabled = isEnabledCustomTle.value,
+            )
+            Row(
+                horizontalArrangement = Arrangement.SpaceBetween,
+                verticalAlignment = Alignment.CenterVertically,
+                modifier = Modifier.fillMaxWidth()
+            ) {
+                Text(text = stringResource(id = R.string.prefs_data_sources_transceivers_switch))
+                Switch(
+                    checked = isEnabledCustomTransceivers.value,
+                    onCheckedChange = { isEnabledCustomTransceivers.value = it }
+                )
+            }
+            OutlinedTextField(
+                value = urlTransceivers.value,
+                onValueChange = { urlTransceivers.value = it },
+                label = { Text(text = stringResource(id = R.string.prefs_data_sources_url_title)) },
+                singleLine = true,
+                modifier = Modifier.fillMaxWidth(),
+                enabled = isEnabledCustomTransceivers.value,
+            )
+        }
+    }
+}
diff --git a/app/src/main/java/com/rtbishop/look4sat/presentation/settings/SettingsScreen.kt b/app/src/main/java/com/rtbishop/look4sat/presentation/settings/SettingsScreen.kt
index 878c3c9d..ddc0093d 100644
--- a/app/src/main/java/com/rtbishop/look4sat/presentation/settings/SettingsScreen.kt
+++ b/app/src/main/java/com/rtbishop/look4sat/presentation/settings/SettingsScreen.kt
@@ -112,8 +112,11 @@ private fun SettingsScreen(uiState: SettingsState) {
         }
     }
     val contentContract = ActivityResultContracts.GetContent()
-    val contentRequest = rememberLauncherForActivityResult(contentContract) { uri ->
-        uri?.let { uiState.sendAction(SettingsAction.UpdateFromFile(uri.toString())) }
+    val contentRequestForTle = rememberLauncherForActivityResult(contentContract) { uri ->
+        uri?.let { uiState.sendAction(SettingsAction.UpdateTLEFromFile(uri.toString())) }
+    }
+    val contentRequestForTransceivers = rememberLauncherForActivityResult(contentContract) { uri ->
+        uri?.let { uiState.sendAction(SettingsAction.UpdateTransceiversFromFile(uri.toString())) }
     }
 
     // Position settings
@@ -137,10 +140,46 @@ private fun SettingsScreen(uiState: SettingsState) {
         LocatorDialog(posSettings.stationPos.qthLocator, showLocDialog, setQthPos)
     }
 
+    // Data sources dialog
+    val dataSourcesDialogState = rememberSaveable { mutableStateOf(false) }
+    val showDataSourcesDialog = { dataSourcesDialogState.value = true }
+    val dismissDataSourcesDialog = { dataSourcesDialogState.value = false }
+    if (dataSourcesDialogState.value) {
+        DataSourcesDialog(
+            useCustomTle = uiState.dataSourcesSettings.useCustomTLE,
+            useCustomTransceivers = uiState.dataSourcesSettings.useCustomTransceivers,
+            tleUrl = uiState.dataSourcesSettings.tleUrl,
+            transceiversUrl = uiState.dataSourcesSettings.transceiversUrl,
+            dismiss = dismissDataSourcesDialog,
+            onSave = {
+                useCustomTle, useCustomTransceivers, tleUrl, transceiversUrl  ->
+                if (!useCustomTle || tleUrl.isNotBlank()) {
+                    uiState.sendDataSourcesAction(DataSourcesAction.SetUseCustomTle(useCustomTle))
+                    uiState.sendDataSourcesAction(DataSourcesAction.SetTleUrl(tleUrl))
+                }
+                if (!useCustomTransceivers || transceiversUrl.isNotBlank()) {
+                    uiState.sendDataSourcesAction(DataSourcesAction.SetUseCustomTransceivers(useCustomTransceivers))
+                    uiState.sendDataSourcesAction(DataSourcesAction.SetTransceiversUrl(transceiversUrl))
+                }
+            }
+        )
+    }
+
+    // Import dialog
+    val importDialogState = rememberSaveable { mutableStateOf(false) }
+    val showImportDialog = { importDialogState.value = true }
+    val dismissImportDialog = { importDialogState.value = false }
+    if (importDialogState.value) {
+        ImportDialog(
+            onImportTle = { contentRequestForTle.launch("*/*") },
+            onImportTransceivers = { contentRequestForTransceivers.launch("*/*") },
+            onDismiss = dismissImportDialog
+        )
+    }
+
     // Data settings
     val dataSettings = uiState.dataSettings
     val updateFromWeb: () -> Unit = { uiState.sendAction(SettingsAction.UpdateFromWeb) }
-    val updateFromFile = { contentRequest.launch("*/*") }
     val clearAllData: () -> Unit = { uiState.sendAction(SettingsAction.ClearAllData) }
 
     // RC settings
@@ -209,7 +248,7 @@ private fun SettingsScreen(uiState: SettingsState) {
             item {
                 LocationCard(posSettings, setGpsPos, showPosDialog, showLocDialog, dismissPos, uiState.sendSystemAction)
             }
-            item { DataCard(dataSettings, updateFromWeb, updateFromFile, clearAllData) }
+            item { DataCard(dataSettings, updateFromWeb, clearAllData, showImportDialog, showDataSourcesDialog) }
             item { NetworkOutputCard(rcSettings, setRotatorState, setRotatorAddress, setRotatorPort) }
             item { BluetoothOutputCard(rcSettings, setBluetoothState, setBluetoothAddress, setBluetoothFormat) }
             item { OtherCard(otherSettings, toggleUtc, toggleUpdate, toggleSweep, toggleSensor) }
@@ -290,15 +329,16 @@ private fun LocationCard(
 @Composable
 private fun DataCardPreview() = MainTheme {
     val settings = DataSettings(true, 5000, 2500, 0L)
-    DataCard(settings = settings, {}, {}) {}
+    DataCard(settings = settings, {}, {},{}) {}
 }
 
 @Composable
 private fun DataCard(
     settings: DataSettings,
     updateFromWeb: () -> Unit,
-    updateFromFile: () -> Unit,
-    clearAllData: () -> Unit
+    clearAllData: () -> Unit,
+    showImportDialog: () -> Unit,
+    showDataSourcesDialog: () -> Unit
 ) {
     ElevatedCard(modifier = Modifier.fillMaxWidth()) {
         Column(
@@ -320,25 +360,37 @@ private fun DataCard(
                 Text(text = stringResource(R.string.prefs_data_radios, settings.radiosTotal))
             }
             Spacer(modifier = Modifier.height(1.dp))
-            Row(horizontalArrangement = Arrangement.SpaceEvenly) {
+            Row(
+                horizontalArrangement = Arrangement.spacedBy(6.dp),
+                modifier = Modifier.fillMaxWidth()
+            ) {
                 CardButton(
-                    onClick = { updateFromWeb() },
+                    onClick = updateFromWeb,
                     text = stringResource(id = R.string.prefs_data_update),
                     modifier = Modifier.weight(1f)
                 )
-                Spacer(modifier = Modifier.width(6.dp))
                 CardButton(
-                    onClick = { updateFromFile() },
+                    onClick = showImportDialog,
                     text = stringResource(id = R.string.prefs_data_import),
                     modifier = Modifier.weight(1f)
                 )
-                Spacer(modifier = Modifier.width(6.dp))
                 CardButton(
-                    onClick = { clearAllData() },
+                    onClick = clearAllData,
                     text = stringResource(id = R.string.prefs_data_clear),
                     modifier = Modifier.weight(1f)
                 )
             }
+            Spacer(modifier = Modifier.height(6.dp))
+            Row(
+                horizontalArrangement = Arrangement.spacedBy(6.dp),
+                modifier = Modifier.fillMaxWidth()
+            ) {
+                CardButton(
+                    onClick = showDataSourcesDialog,
+                    text = stringResource(id = R.string.prefs_data_sources),
+                    modifier = Modifier.weight(1f)
+                )
+            }
         }
     }
 }
@@ -633,3 +685,4 @@ private fun BotCard(onClick: () -> Unit, resId: Int, text: String, modifier: Mod
         }
     }
 }
+
diff --git a/app/src/main/java/com/rtbishop/look4sat/presentation/settings/SettingsState.kt b/app/src/main/java/com/rtbishop/look4sat/presentation/settings/SettingsState.kt
index ae6fed54..880d61cf 100644
--- a/app/src/main/java/com/rtbishop/look4sat/presentation/settings/SettingsState.kt
+++ b/app/src/main/java/com/rtbishop/look4sat/presentation/settings/SettingsState.kt
@@ -19,6 +19,7 @@ package com.rtbishop.look4sat.presentation.settings
 
 import com.rtbishop.look4sat.domain.model.OtherSettings
 import com.rtbishop.look4sat.domain.model.RCSettings
+import com.rtbishop.look4sat.domain.model.DataSourcesSettings
 import com.rtbishop.look4sat.domain.predict.GeoPos
 import com.rtbishop.look4sat.domain.predict.OrbitalPass
 
@@ -39,9 +40,11 @@ data class SettingsState(
     val dataSettings: DataSettings,
     val otherSettings: OtherSettings,
     val rcSettings: RCSettings,
+    val dataSourcesSettings: DataSourcesSettings,
     val sendAction: (SettingsAction) -> Unit,
     val sendRCAction: (RCAction) -> Unit,
-    val sendSystemAction: (SystemAction) -> Unit
+    val sendSystemAction: (SystemAction) -> Unit,
+    val sendDataSourcesAction: (DataSourcesAction) -> Unit
 )
 
 sealed class SettingsAction {
@@ -50,7 +53,8 @@ sealed class SettingsAction {
     data class SetQthPosition(val locator: String) : SettingsAction()
     data object DismissPosMessages : SettingsAction()
     data object UpdateFromWeb : SettingsAction()
-    data class UpdateFromFile(val uri: String) : SettingsAction()
+    data class UpdateTLEFromFile(val uri: String) : SettingsAction()
+    data class UpdateTransceiversFromFile(val uri: String) : SettingsAction()
     data object ClearAllData : SettingsAction()
     data class ToggleUtc(val value: Boolean) : SettingsAction()
     data class ToggleUpdate(val value: Boolean) : SettingsAction()
@@ -72,3 +76,10 @@ sealed class RCAction {
     data class SetBluetoothName(val value: String) : RCAction()
     data class SetBluetoothAddress(val value: String) : RCAction()
 }
+
+sealed class DataSourcesAction {
+    data class SetUseCustomTle(val value: Boolean) : DataSourcesAction()
+    data class SetUseCustomTransceivers(val value: Boolean) : DataSourcesAction()
+    data class SetTleUrl(val value: String) : DataSourcesAction()
+    data class SetTransceiversUrl(val value: String) : DataSourcesAction()
+}
diff --git a/app/src/main/java/com/rtbishop/look4sat/presentation/settings/SettingsViewModel.kt b/app/src/main/java/com/rtbishop/look4sat/presentation/settings/SettingsViewModel.kt
index 5415e7a9..834c4ffc 100644
--- a/app/src/main/java/com/rtbishop/look4sat/presentation/settings/SettingsViewModel.kt
+++ b/app/src/main/java/com/rtbishop/look4sat/presentation/settings/SettingsViewModel.kt
@@ -24,6 +24,7 @@ import androidx.lifecycle.viewmodel.initializer
 import androidx.lifecycle.viewmodel.viewModelFactory
 import com.rtbishop.look4sat.MainApplication
 import com.rtbishop.look4sat.R
+import com.rtbishop.look4sat.domain.model.DataSourcesSettings
 import com.rtbishop.look4sat.domain.predict.OrbitalPass
 import com.rtbishop.look4sat.domain.repository.IDatabaseRepo
 import com.rtbishop.look4sat.domain.repository.ISatelliteRepo
@@ -51,6 +52,7 @@ class SettingsViewModel(
 
     private val defaultPosSettings = PositionSettings(false, settingsRepo.stationPosition.value, 0)
     private val defaultDataSettings = DataSettings(false, 0, 0, 0L)
+    private val defaultDataSourcesSettings = DataSourcesSettings(false, false, settingsRepo.dataSourcesSettings.value.tleUrl, settingsRepo.dataSourcesSettings.value.transceiversUrl)
     private val _uiState = MutableStateFlow(
         SettingsState(
             nextTime = "00:00:00",
@@ -61,9 +63,11 @@ class SettingsViewModel(
             dataSettings = defaultDataSettings,
             otherSettings = settingsRepo.otherSettings.value,
             rcSettings = settingsRepo.rcSettings.value,
+            dataSourcesSettings = defaultDataSourcesSettings,
             sendAction = ::handleAction,
             sendRCAction = ::handleAction,
-            sendSystemAction = ::handleAction
+            sendSystemAction = ::handleAction,
+            sendDataSourcesAction = ::handleAction
         )
     )
     private var processing: Job? = null
@@ -113,6 +117,13 @@ class SettingsViewModel(
                 _uiState.update { it.copy(otherSettings = settings) }
             }
         }
+        viewModelScope.launch {
+            settingsRepo.dataSourcesSettings.collect { settings ->
+                _uiState.update {
+                    it.copy(dataSourcesSettings = settings)
+                }
+            }
+        }
     }
 
     private fun handleAction(action: SettingsAction) {
@@ -122,7 +133,8 @@ class SettingsViewModel(
             is SettingsAction.SetQthPosition -> setQthPosition(action.locator)
             SettingsAction.DismissPosMessages -> dismissPosMessage()
             SettingsAction.UpdateFromWeb -> updateFromWeb()
-            is SettingsAction.UpdateFromFile -> updateFromFile(action.uri)
+            is SettingsAction.UpdateTLEFromFile -> updateTLEFromFile(action.uri)
+            is SettingsAction.UpdateTransceiversFromFile -> updateTransceiversFromFile(action.uri)
             SettingsAction.ClearAllData -> clearAllData()
             is SettingsAction.ToggleUtc -> settingsRepo.setStateOfUtc(action.value)
             is SettingsAction.ToggleUpdate -> settingsRepo.setStateOfAutoUpdate(action.value)
@@ -150,6 +162,15 @@ class SettingsViewModel(
         }
     }
 
+    private fun handleAction(action: DataSourcesAction) {
+        when (action) {
+            is DataSourcesAction.SetUseCustomTle ->  settingsRepo.setUseCustomTle(action.value)
+            is DataSourcesAction.SetUseCustomTransceivers ->  settingsRepo.setUseCustomTransceivers(action.value)
+            is DataSourcesAction.SetTleUrl -> settingsRepo.setTleUrl(action.value)
+            is DataSourcesAction.SetTransceiversUrl -> settingsRepo.setTransceiversUrl(action.value)
+        }
+    }
+
     private fun setGpsPosition() {
         if (settingsRepo.setStationPosition()) {
             val messageResId = R.string.prefs_loc_success
@@ -217,11 +238,23 @@ class SettingsViewModel(
         }
     }
 
-    private fun updateFromFile(uri: String) = viewModelScope.launch {
+    private fun updateTLEFromFile(uri: String) = viewModelScope.launch {
         try {
             val newDataSettings = _uiState.value.dataSettings.copy(isUpdating = true)
             _uiState.update { it.copy(dataSettings = newDataSettings) }
-            databaseRepo.updateFromFile(uri)
+            databaseRepo.updateTLEFromFile(uri)
+        } catch (exception: Exception) {
+            val newDataSettings = _uiState.value.dataSettings.copy(isUpdating = false)
+            _uiState.update { it.copy(dataSettings = newDataSettings) }
+            println(exception)
+        }
+    }
+
+    private fun updateTransceiversFromFile(uri: String) = viewModelScope.launch {
+        try {
+            val newDataSettings = _uiState.value.dataSettings.copy(isUpdating = true)
+            _uiState.update { it.copy(dataSettings = newDataSettings) }
+            databaseRepo.updateTransceiversFromFile(uri)
         } catch (exception: Exception) {
             val newDataSettings = _uiState.value.dataSettings.copy(isUpdating = false)
             _uiState.update { it.copy(dataSettings = newDataSettings) }
diff --git a/app/src/main/res/values-es/strings.xml b/app/src/main/res/values-es/strings.xml
index 391d04bb..6e6a00fe 100644
--- a/app/src/main/res/values-es/strings.xml
+++ b/app/src/main/res/values-es/strings.xml
@@ -105,9 +105,15 @@
     <string name="prefs_data_update">Actualizar</string>
     <string name="prefs_data_import">Importar</string>
     <string name="prefs_data_clear">Vaciar</string>
+    <string name="prefs_data_sources">Custom data sources</string>
     <string name="prefs_data_clear_success">Datos eliminados con éxito</string>
     <string name="prefs_data_update_success">Actualización completada con éxito</string>
 
+    <string name="prefs_data_sources_title">Custom data sources</string>
+    <string name="prefs_data_sources_tle_switch">Custom TLE URL</string>
+    <string name="prefs_data_sources_transceivers_switch">Custom transceivers URL</string>
+    <string name="prefs_data_sources_url_title">URL (https)</string>
+
     <string name="prefs_net_title">Salida de datos de red</string>
     <string name="prefs_net_switch">Habilitar salida</string>
     <string name="prefs_net_ip_hint">Dirección IP</string>
diff --git a/app/src/main/res/values-ru/strings.xml b/app/src/main/res/values-ru/strings.xml
index 85e6ab95..ffe3aa6f 100644
--- a/app/src/main/res/values-ru/strings.xml
+++ b/app/src/main/res/values-ru/strings.xml
@@ -104,9 +104,15 @@
     <string name="prefs_data_update">Обновить</string>
     <string name="prefs_data_import">Импорт</string>
     <string name="prefs_data_clear">Очистить</string>
+    <string name="prefs_data_sources">Свои источники данных</string>
     <string name="prefs_data_clear_success">Очистка прошла успешно</string>
     <string name="prefs_data_update_success">Обновление прошло успешно</string>
 
+    <string name="prefs_data_sources_title">Свои источники данных</string>
+    <string name="prefs_data_sources_tle_switch">Custom TLE URL</string>
+    <string name="prefs_data_sources_transceivers_switch">Custom transceivers URL</string>
+    <string name="prefs_data_sources_url_title">URL (https)</string>
+
     <string name="prefs_net_title">Вывод сетевых данных</string>
     <string name="prefs_net_switch">Включить вывод</string>
     <string name="prefs_net_ip_hint">IP адрес</string>
diff --git a/app/src/main/res/values-si/strings.xml b/app/src/main/res/values-si/strings.xml
index 00728c12..1144f44a 100644
--- a/app/src/main/res/values-si/strings.xml
+++ b/app/src/main/res/values-si/strings.xml
@@ -105,9 +105,15 @@
     <string name="prefs_data_update">නැවුම් කරන්න</string>
     <string name="prefs_data_import">ආදානය</string>
     <string name="prefs_data_clear">පිරිසිදු ක°</string>
+    <string name="prefs_data_sources">Custom data sources</string>
     <string name="prefs_data_clear_success">දත්ත ඉවත් කිරීම සාර්ථකයි</string>
     <string name="prefs_data_update_success">යාවත්කාලීනය සම්පූර්ණ කිරීම සාර්ථකයි</string>
 
+    <string name="prefs_data_sources_title">Custom data sources</string>
+    <string name="prefs_data_sources_tle_switch">Custom TLE URL</string>
+    <string name="prefs_data_sources_transceivers_switch">Custom transceivers URL</string>
+    <string name="prefs_data_sources_url_title">URL (https)</string>
+
     <string name="prefs_net_title">ජාල ප්‍රතිදානය</string>
     <string name="prefs_net_switch">ප්‍රතිදානය සක්‍රීය කරන්න</string>
     <string name="prefs_net_ip_hint">IP ලිපිනය</string>
diff --git a/app/src/main/res/values-uk/strings.xml b/app/src/main/res/values-uk/strings.xml
index dd8b5644..9fb4870d 100644
--- a/app/src/main/res/values-uk/strings.xml
+++ b/app/src/main/res/values-uk/strings.xml
@@ -105,9 +105,15 @@
     <string name="prefs_data_update">Оновити</string>
     <string name="prefs_data_import">Імпорт</string>
     <string name="prefs_data_clear">Очистити</string>
+    <string name="prefs_data_sources">Custom data sources</string>
     <string name="prefs_data_clear_success">Дані успішно очищено</string>
     <string name="prefs_data_update_success">Оновлення успішне</string>
 
+    <string name="prefs_data_sources_title">Custom data sources</string>
+    <string name="prefs_data_sources_tle_switch">Custom TLE URL</string>
+    <string name="prefs_data_sources_transceivers_switch">Custom transceivers URL</string>
+    <string name="prefs_data_sources_url_title">URL (https)</string>
+
     <string name="prefs_net_title">Вивід мережевих даних</string>
     <string name="prefs_net_switch">Увімкнути вихід</string>
     <string name="prefs_net_ip_hint">IP адреса</string>
diff --git a/app/src/main/res/values-zh/strings.xml b/app/src/main/res/values-zh/strings.xml
index d532cc87..b0acfb07 100644
--- a/app/src/main/res/values-zh/strings.xml
+++ b/app/src/main/res/values-zh/strings.xml
@@ -97,9 +97,15 @@
     <string name="prefs_data_update">在线更新</string>
     <string name="prefs_data_import">导入文件</string>
     <string name="prefs_data_clear">清空</string>
+    <string name="prefs_data_sources">Custom data sources</string>
     <string name="prefs_data_clear_success">数据清空成功</string>
     <string name="prefs_data_update_success">更新成功</string>
 
+    <string name="prefs_data_sources_title">Custom data sources</string>
+    <string name="prefs_data_sources_tle_switch">Custom TLE URL</string>
+    <string name="prefs_data_sources_transceivers_switch">Custom transceivers URL</string>
+    <string name="prefs_data_sources_url_title">URL (https)</string>
+
     <string name="prefs_net_title">网络数据输出</string>
     <string name="prefs_net_switch">启用输出</string>
     <string name="prefs_net_ip_hint">IP地址</string>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index b1a80767..4a33e8bf 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -128,9 +128,15 @@
     <string name="prefs_data_update">Update</string>
     <string name="prefs_data_import">Import</string>
     <string name="prefs_data_clear">Clear</string>
+    <string name="prefs_data_sources">Custom data sources</string>
     <string name="prefs_data_clear_success">Data was cleared successfully</string>
     <string name="prefs_data_update_success">Update completed successfully</string>
 
+    <string name="prefs_data_sources_title">Custom data sources</string>
+    <string name="prefs_data_sources_tle_switch">Custom TLE URL</string>
+    <string name="prefs_data_sources_transceivers_switch">Custom transceivers URL</string>
+    <string name="prefs_data_sources_url_title">URL (https)</string>
+
     <string name="prefs_net_title">Network data output</string>
     <string name="prefs_net_switch">Enable output</string>
     <string name="prefs_net_ip_hint">IP address</string>
diff --git a/data/src/main/java/com/rtbishop/look4sat/data/repository/DatabaseRepo.kt b/data/src/main/java/com/rtbishop/look4sat/data/repository/DatabaseRepo.kt
index 4a1295be..8f9a1e91 100644
--- a/data/src/main/java/com/rtbishop/look4sat/data/repository/DatabaseRepo.kt
+++ b/data/src/main/java/com/rtbishop/look4sat/data/repository/DatabaseRepo.kt
@@ -39,23 +39,46 @@ class DatabaseRepo(
     private val settingsRepo: ISettingsRepo
 ) : IDatabaseRepo {
 
-    override suspend fun updateFromFile(uri: String) = withContext(dispatcher) {
+    override suspend fun updateTLEFromFile(uri: String) = withContext(dispatcher) {
         val importedSatellites = remoteSource.getFileStream(uri)?.let { dataParser.parseTLEStream(it) }
         importedSatellites?.let { localSource.insertEntries(it) }
         setUpdateSuccessful(System.currentTimeMillis())
     }
 
+    override suspend fun updateTransceiversFromFile(uri: String) = withContext(dispatcher) {
+        val radios = remoteSource.getFileStream(uri)?.let { dataParser.parseJSONStream(it) }
+        radios?.let {
+            if(it.isNotEmpty()) {
+                localSource.deleteRadios()
+                localSource.insertRadios(it)
+            }
+        }
+        setUpdateSuccessful(System.currentTimeMillis())
+    }
+
     override suspend fun updateFromRemote() = withContext(dispatcher) {
         val importedEntries = mutableListOf<OrbitalData>()
         val importedRadios = mutableListOf<SatRadio>()
-        // fetch
-        val jobsMap = Sources.satelliteDataUrls.mapValues { async { remoteSource.getNetworkStream(it.value) } }
-        val jobRadios = async { remoteSource.getNetworkStream(Sources.RADIO_DATA_URL) }
+        val tleUrls = Sources.satelliteDataUrls.toMutableMap().apply {
+            if (settingsRepo.dataSourcesSettings.value.useCustomTLE) {
+                this["Other"] = settingsRepo.dataSourcesSettings.value.transceiversUrl
+            }
+        }
+        val jobsMap = tleUrls
+            .filter { (_, url) -> url.isNotEmpty() }
+            .mapValues { (_, url) -> async { remoteSource.getNetworkStream(url) } }
+        val radioUrls = buildList {
+            add(Sources.RADIO_DATA_URL)
+            if (settingsRepo.dataSourcesSettings.value.useCustomTransceivers) {
+                add(settingsRepo.dataSourcesSettings.value.transceiversUrl)
+            }
+        }
+        val jobRadios = radioUrls.associateWith { url -> async { remoteSource.getNetworkStream(url) } }
         // parse
         jobsMap.mapValues { job -> job.value.await() }.forEach { entry ->
             entry.value?.let { stream ->
                 when (val type = entry.key) {
-                    "Amsat", "R4UAB" -> {
+                    "Amsat", "R4UAB", "Other" -> {
                         // parse tle stream
                         val satellites = dataParser.parseTLEStream(stream)
                         val catnums = satellites.map { it.catnum }
@@ -82,7 +105,11 @@ class DatabaseRepo(
                 }
             }
         }
-        jobRadios.await()?.let { importedRadios.addAll(dataParser.parseJSONStream(it)) }
+        jobRadios.values.forEach { job ->
+            job.await()?.let {
+                importedRadios.addAll(dataParser.parseJSONStream(it))
+            }
+        }
         // insert
         localSource.insertEntries(importedEntries)
         localSource.insertRadios(importedRadios)
diff --git a/data/src/main/java/com/rtbishop/look4sat/data/repository/SettingsRepo.kt b/data/src/main/java/com/rtbishop/look4sat/data/repository/SettingsRepo.kt
index 1c00bb5e..c4894af8 100644
--- a/data/src/main/java/com/rtbishop/look4sat/data/repository/SettingsRepo.kt
+++ b/data/src/main/java/com/rtbishop/look4sat/data/repository/SettingsRepo.kt
@@ -27,6 +27,7 @@ import com.rtbishop.look4sat.domain.model.DatabaseState
 import com.rtbishop.look4sat.domain.model.OtherSettings
 import com.rtbishop.look4sat.domain.model.PassesSettings
 import com.rtbishop.look4sat.domain.model.RCSettings
+import com.rtbishop.look4sat.domain.model.DataSourcesSettings
 import com.rtbishop.look4sat.domain.predict.GeoPos
 import com.rtbishop.look4sat.domain.repository.ISettingsRepo
 import com.rtbishop.look4sat.domain.utility.positionToQth
@@ -68,6 +69,10 @@ class SettingsRepo(
     private val keyUpdateTimestamp = "updateTimestamp"
     private val keyShouldSeeWarning = "shouldSeeWarning"
     private val keyShouldSeeWelcome = "shouldSeeWelcome"
+    private val keyUseCustomTle = "useCustomTle"
+    private val keyUseCustomTransceivers = "useCustomTransceivers"
+    private val keyTleUrl = "tleUrl"
+    private val keyTransceiversUrl = "transceiversUrl"
     private val separatorComma = ","
 
     //region # Satellites selection settings
@@ -330,4 +335,36 @@ class SettingsRepo(
         shouldSeeWelcome = preferences.getBoolean(keyShouldSeeWelcome, true)
     )
     //endregion
+
+    //region # Data sources settings
+    private val _dataSourcesSettings = MutableStateFlow(getDataSourcesSettings())
+    override val dataSourcesSettings: StateFlow<DataSourcesSettings> = _dataSourcesSettings
+
+    override fun setUseCustomTle(value: Boolean) {
+        preferences.edit { putBoolean(keyUseCustomTle, value) }
+        _dataSourcesSettings.update { it.copy(useCustomTLE = value) }
+    }
+
+    override fun setUseCustomTransceivers(value: Boolean) {
+        preferences.edit { putBoolean(keyUseCustomTransceivers, value) }
+        _dataSourcesSettings.update { it.copy(useCustomTransceivers = value) }
+    }
+
+    override fun setTleUrl(value: String) {
+        preferences.edit { putString(keyTleUrl, value) }
+        _dataSourcesSettings.update { it.copy(tleUrl = value) }
+    }
+
+    override fun setTransceiversUrl(value: String) {
+        preferences.edit { putString(keyTransceiversUrl, value) }
+        _dataSourcesSettings.update { it.copy(transceiversUrl = value) }
+    }
+
+    private fun getDataSourcesSettings(): DataSourcesSettings = DataSourcesSettings(
+        useCustomTLE = preferences.getBoolean(keyUseCustomTle, false),
+        useCustomTransceivers = preferences.getBoolean(keyUseCustomTransceivers, false),
+        tleUrl = preferences.getString(keyTleUrl, "https://example.com/tle.txt") ?: "",
+        transceiversUrl = preferences.getString(keyTransceiversUrl, "https://example.com/radio.json") ?: ""
+    )
+    //endregion
 }
diff --git a/domain/src/main/java/com/rtbishop/look4sat/domain/model/Settings.kt b/domain/src/main/java/com/rtbishop/look4sat/domain/model/Settings.kt
index 027a8ec5..dbfef841 100644
--- a/domain/src/main/java/com/rtbishop/look4sat/domain/model/Settings.kt
+++ b/domain/src/main/java/com/rtbishop/look4sat/domain/model/Settings.kt
@@ -48,3 +48,10 @@ data class OtherSettings(
     val shouldSeeWarning: Boolean,
     val shouldSeeWelcome: Boolean
 )
+
+data class DataSourcesSettings(
+    val useCustomTLE: Boolean,
+    val useCustomTransceivers: Boolean,
+    val tleUrl: String,
+    val transceiversUrl: String
+)
diff --git a/domain/src/main/java/com/rtbishop/look4sat/domain/repository/IDatabaseRepo.kt b/domain/src/main/java/com/rtbishop/look4sat/domain/repository/IDatabaseRepo.kt
index 9b4bc3a8..39f1c387 100644
--- a/domain/src/main/java/com/rtbishop/look4sat/domain/repository/IDatabaseRepo.kt
+++ b/domain/src/main/java/com/rtbishop/look4sat/domain/repository/IDatabaseRepo.kt
@@ -18,7 +18,8 @@
 package com.rtbishop.look4sat.domain.repository
 
 interface IDatabaseRepo {
-    suspend fun updateFromFile(uri: String)
+    suspend fun updateTLEFromFile(uri: String)
+    suspend fun updateTransceiversFromFile(uri: String)
     suspend fun updateFromRemote()
     suspend fun clearAllData()
 }
diff --git a/domain/src/main/java/com/rtbishop/look4sat/domain/repository/ISettingsRepo.kt b/domain/src/main/java/com/rtbishop/look4sat/domain/repository/ISettingsRepo.kt
index 8dd8c3bf..387939c1 100644
--- a/domain/src/main/java/com/rtbishop/look4sat/domain/repository/ISettingsRepo.kt
+++ b/domain/src/main/java/com/rtbishop/look4sat/domain/repository/ISettingsRepo.kt
@@ -21,6 +21,7 @@ import com.rtbishop.look4sat.domain.model.DatabaseState
 import com.rtbishop.look4sat.domain.model.OtherSettings
 import com.rtbishop.look4sat.domain.model.PassesSettings
 import com.rtbishop.look4sat.domain.model.RCSettings
+import com.rtbishop.look4sat.domain.model.DataSourcesSettings
 import com.rtbishop.look4sat.domain.predict.GeoPos
 import kotlinx.coroutines.flow.StateFlow
 
@@ -73,4 +74,12 @@ interface ISettingsRepo {
     fun setWarningDismissed()
     fun setWelcomeDismissed()
     //endregion
+
+    //region # Transceivers settings
+    val dataSourcesSettings: StateFlow<DataSourcesSettings>
+    fun setUseCustomTle(value: Boolean)
+    fun setUseCustomTransceivers(value: Boolean)
+    fun setTleUrl(value: String)
+    fun setTransceiversUrl(value: String)
+    //endregion
 }
diff --git a/domain/src/main/java/com/rtbishop/look4sat/domain/source/Sources.kt b/domain/src/main/java/com/rtbishop/look4sat/domain/source/Sources.kt
index fe30d6e7..c10710e0 100644
--- a/domain/src/main/java/com/rtbishop/look4sat/domain/source/Sources.kt
+++ b/domain/src/main/java/com/rtbishop/look4sat/domain/source/Sources.kt
@@ -46,6 +46,7 @@ object Sources {
         "Swarm" to "https://celestrak.org/NORAD/elements/gp.php?GROUP=swarm&FORMAT=csv",
         "Weather" to "https://celestrak.org/NORAD/elements/gp.php?GROUP=weather&FORMAT=csv",
         "X-Comm" to "https://celestrak.org/NORAD/elements/gp.php?GROUP=x-comm&FORMAT=csv",
-        "Amsat" to "https://amsat.org/tle/current/nasabare.txt"
+        "Amsat" to "https://amsat.org/tle/current/nasabare.txt",
+        "Other" to "" // key for sats filter
     )
 }