Update SDR device claims

app.py

@@ -236,12 +236,12 @@ cleanup_manager.register(deauth_alerts)
 # SDR DEVICE REGISTRY
 # ============================================
 # Tracks which mode is using which SDR device to prevent conflicts
-# Key: device_index (int), Value: mode_name (str)
+# Key: device_index (int), Value: {sdr_type: mode_name}
-sdr_device_registry: dict[int, str] = {}
+sdr_device_registry: dict[int, dict[str, str]] = {}
 sdr_device_registry_lock = threading.Lock()
 
 
-def claim_sdr_device(device_index: int, mode_name: str) -> str | None:
+def claim_sdr_device(device_index: int, mode_name: str, sdr_type: str = 'rtlsdr') -> str | None:
     """Claim an SDR device for a mode.
 
     Checks the in-app registry first, then probes the USB device to
@@ -251,46 +251,61 @@ def claim_sdr_device(device_index: int, mode_name: str) -> str | None:
     Args:
         device_index: The SDR device index to claim
         mode_name: Name of the mode claiming the device (e.g., 'sensor', 'rtlamr')
+        sdr_type: SDR hardware type (e.g., 'rtlsdr', 'hackrf')
 
     Returns:
         Error message if device is in use, None if successfully claimed
     """
+    sdr_type_key = str(sdr_type or 'rtlsdr').lower()
+
     with sdr_device_registry_lock:
-        if device_index in sdr_device_registry:
+        device_entry = sdr_device_registry.get(device_index, {})
-            in_use_by = sdr_device_registry[device_index]
+        if sdr_type_key in device_entry:
+            in_use_by = device_entry[sdr_type_key]
             return f'SDR device {device_index} is in use by {in_use_by}. Stop {in_use_by} first or use a different device.'
 
         # Probe the USB device to catch external processes holding the handle
-        try:
+        # Only relevant for RTL-SDR devices
-            from utils.sdr.detection import probe_rtlsdr_device
+        if sdr_type_key == 'rtlsdr':
-            usb_error = probe_rtlsdr_device(device_index)
+            try:
-            if usb_error:
+                from utils.sdr.detection import probe_rtlsdr_device
-                return usb_error
+                usb_error = probe_rtlsdr_device(device_index)
-        except Exception:
+                if usb_error:
-            pass  # If probe fails, let the caller proceed normally
+                    return usb_error
+            except Exception:
+                pass  # If probe fails, let the caller proceed normally
 
-        sdr_device_registry[device_index] = mode_name
+        if device_index not in sdr_device_registry:
+            sdr_device_registry[device_index] = {}
+        sdr_device_registry[device_index][sdr_type_key] = mode_name
         return None
 
 
-def release_sdr_device(device_index: int) -> None:
+def release_sdr_device(device_index: int, sdr_type: str = 'rtlsdr') -> None:
     """Release an SDR device from the registry.
 
     Args:
         device_index: The SDR device index to release
+        sdr_type: SDR hardware type (e.g., 'rtlsdr', 'hackrf')
     """
+    sdr_type_key = str(sdr_type or 'rtlsdr').lower()
     with sdr_device_registry_lock:
-        sdr_device_registry.pop(device_index, None)
+        entry = sdr_device_registry.get(device_index)
+        if not entry:
+            return
+        entry.pop(sdr_type_key, None)
+        if not entry:
+            sdr_device_registry.pop(device_index, None)
 
 
-def get_sdr_device_status() -> dict[int, str]:
+def get_sdr_device_status() -> dict[int, dict[str, str]]:
     """Get current SDR device allocations.
 
     Returns:
-        Dictionary mapping device indices to mode names
+        Dictionary mapping device indices to {sdr_type: mode_name}
     """
     with sdr_device_registry_lock:
-        return dict(sdr_device_registry)
+        return {idx: dict(modes) for idx, modes in sdr_device_registry.items()}
 
 
 # ============================================
@@ -396,8 +411,11 @@ def get_devices_status() -> Response:
     result = []
     for device in devices:
         d = device.to_dict()
-        d['in_use'] = device.index in registry
+        sdr_type_key = device.sdr_type.value if hasattr(device.sdr_type, 'value') else str(device.sdr_type)
-        d['used_by'] = registry.get(device.index)
+        sdr_type_key = str(sdr_type_key).lower()
+        device_registry = registry.get(device.index, {})
+        d['in_use'] = sdr_type_key in device_registry
+        d['used_by'] = device_registry.get(sdr_type_key)
         result.append(d)
 
     return jsonify(result)

intercept_agent.py

@@ -679,6 +679,7 @@ class ModeManager:
             running_modes_detail[mode] = {
                 'started_at': info.get('started_at'),
                 'device': params.get('device', params.get('device_index', 0)),
+                'sdr_type': str(params.get('sdr_type', 'rtlsdr')).lower(),
             }
 
         status = {
@@ -698,20 +699,22 @@ class ModeManager:
     # Modes that use RTL-SDR devices
     SDR_MODES = {'adsb', 'sensor', 'pager', 'ais', 'acars', 'dsc', 'rtlamr', 'listening_post'}
 
-    def get_sdr_in_use(self, device: int = 0) -> str | None:
+    def get_sdr_in_use(self, device: int = 0, sdr_type: str = 'rtlsdr') -> str | None:
         """Check if an SDR device is in use by another mode.
 
         Returns the mode name using the device, or None if available.
         """
+        sdr_type_key = str(sdr_type or 'rtlsdr').lower()
         for mode, info in self.running_modes.items():
             if mode in self.SDR_MODES:
                 mode_device = info.get('params', {}).get('device', 0)
+                mode_sdr_type = str(info.get('params', {}).get('sdr_type', 'rtlsdr')).lower()
                 # Normalize to int for comparison
                 try:
                     mode_device = int(mode_device)
                 except (ValueError, TypeError):
                     mode_device = 0
-                if mode_device == device:
+                if mode_device == device and mode_sdr_type == sdr_type_key:
                     return mode
         return None
 
@@ -731,7 +734,8 @@ class ModeManager:
                 device = int(device)
             except (ValueError, TypeError):
                 device = 0
-            in_use_by = self.get_sdr_in_use(device)
+            sdr_type = str(params.get('sdr_type', 'rtlsdr')).lower()
+            in_use_by = self.get_sdr_in_use(device, sdr_type)
             if in_use_by:
                 return {
                     'status': 'error',
@@ -1100,6 +1104,11 @@ class ModeManager:
         # Mode-specific cleanup
         if mode == 'adsb':
             self.adsb_aircraft.clear()
+            if 'adsb_mlat' in self.output_threads:
+                thread = self.output_threads['adsb_mlat']
+                if thread and thread.is_alive():
+                    thread.join(timeout=1)
+                del self.output_threads['adsb_mlat']
         elif mode == 'wifi':
             self.wifi_networks.clear()
             self.wifi_clients.clear()
@@ -1315,10 +1324,16 @@ class ModeManager:
         sdr_type_str = params.get('sdr_type', 'rtlsdr')
         remote_sbs_host = params.get('remote_sbs_host')
         remote_sbs_port = params.get('remote_sbs_port', 30003)
+        mlat_sbs_host = params.get('mlat_sbs_host')
+        mlat_sbs_port = params.get('mlat_sbs_port', 30105)
 
         # If remote SBS host provided, just connect to it
         if remote_sbs_host:
-            return self._start_adsb_sbs_connection(remote_sbs_host, remote_sbs_port)
+            result = self._start_adsb_sbs_connection(remote_sbs_host, remote_sbs_port, source_tag='adsb', thread_name='adsb')
+            if mlat_sbs_host:
+                self._start_adsb_sbs_connection(mlat_sbs_host, mlat_sbs_port, source_tag='mlat', thread_name='adsb_mlat')
+                result['mlat_source'] = f'{mlat_sbs_host}:{mlat_sbs_port}'
+            return result
 
         # Check if dump1090 already running on port 30003
         try:
@@ -1328,7 +1343,11 @@ class ModeManager:
             sock.close()
             if result == 0:
                 logger.info("dump1090 already running, connecting to SBS port")
-                return self._start_adsb_sbs_connection('localhost', 30003)
+                result = self._start_adsb_sbs_connection('localhost', 30003, source_tag='adsb', thread_name='adsb')
+                if mlat_sbs_host:
+                    self._start_adsb_sbs_connection(mlat_sbs_host, mlat_sbs_port, source_tag='mlat', thread_name='adsb_mlat')
+                    result['mlat_source'] = f'{mlat_sbs_host}:{mlat_sbs_port}'
+                return result
         except Exception:
             pass
 
@@ -1385,7 +1404,11 @@ class ModeManager:
                 return {'status': 'error', 'message': f'dump1090 failed to start: {stderr[:200]}'}
 
             # Connect to SBS port
-            return self._start_adsb_sbs_connection('localhost', 30003)
+            result = self._start_adsb_sbs_connection('localhost', 30003, source_tag='adsb', thread_name='adsb')
+            if mlat_sbs_host:
+                self._start_adsb_sbs_connection(mlat_sbs_host, mlat_sbs_port, source_tag='mlat', thread_name='adsb_mlat')
+                result['mlat_source'] = f'{mlat_sbs_host}:{mlat_sbs_port}'
+            return result
 
         except FileNotFoundError:
             return {'status': 'error', 'message': 'dump1090 not found'}
@@ -1414,15 +1437,15 @@ class ModeManager:
                 return path
         return None
 
-    def _start_adsb_sbs_connection(self, host: str, port: int) -> dict:
+    def _start_adsb_sbs_connection(self, host: str, port: int, *, source_tag: str = 'adsb', thread_name: str = 'adsb') -> dict:
         """Connect to SBS port and start parsing."""
         thread = threading.Thread(
             target=self._adsb_sbs_reader,
-            args=(host, port),
+            args=(host, port, source_tag),
             daemon=True
         )
         thread.start()
-        self.output_threads['adsb'] = thread
+        self.output_threads[thread_name] = thread
 
         return {
             'status': 'started',
@@ -1431,7 +1454,7 @@ class ModeManager:
             'gps_enabled': gps_manager.is_running
         }
 
-    def _adsb_sbs_reader(self, host: str, port: int):
+    def _adsb_sbs_reader(self, host: str, port: int, source_tag: str = 'adsb'):
         """Read and parse SBS data from dump1090."""
         mode = 'adsb'
         stop_event = self.stop_events.get(mode)
@@ -1443,7 +1466,7 @@ class ModeManager:
                 sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
                 sock.settimeout(5.0)
                 sock.connect((host, port))
-                logger.info(f"Connected to SBS at {host}:{port}")
+                logger.info(f"Connected to SBS at {host}:{port} ({source_tag})")
                 retry_count = 0
 
                 buffer = ""
@@ -1458,7 +1481,7 @@ class ModeManager:
 
                         while '\n' in buffer:
                             line, buffer = buffer.split('\n', 1)
-                            self._parse_sbs_line(line.strip())
+                            self._parse_sbs_line(line.strip(), source_tag)
 
                     except socket.timeout:
                         continue
@@ -1475,7 +1498,7 @@ class ModeManager:
 
         logger.info("ADS-B SBS reader stopped")
 
-    def _parse_sbs_line(self, line: str):
+    def _parse_sbs_line(self, line: str, source_tag: str = 'adsb'):
         """Parse SBS format line and update aircraft dict."""
         if not line:
             return
@@ -1509,6 +1532,8 @@ class ModeManager:
                 if parts[14] and parts[15]:
                     aircraft['lat'] = float(parts[14])
                     aircraft['lon'] = float(parts[15])
+                    if source_tag:
+                        aircraft['position_source'] = source_tag
 
             elif msg_type == '4' and len(parts) > 16:
                 if parts[12]:

routes/adsb.py

@@ -35,6 +35,9 @@ from config import (
     ADSB_DB_USER,
     ADSB_AUTO_START,
     ADSB_HISTORY_ENABLED,
+    ADSB_MLAT_ENABLED,
+    ADSB_MLAT_SBS_HOST,
+    ADSB_MLAT_SBS_PORT,
     SHARED_OBSERVER_LOCATION_ENABLED,
 )
 from utils.logging import adsb_logger as logger
@@ -71,7 +74,10 @@ adsb_last_message_time = None
 adsb_bytes_received = 0
 adsb_lines_received = 0
 adsb_active_device = None  # Track which device index is being used
+adsb_active_sdr_type = None
 _sbs_error_logged = False  # Suppress repeated connection error logs
+adsb_connected_sources: set[str] = set()
+_adsb_connection_lock = threading.Lock()
 
 # Track ICAOs already looked up in aircraft database (avoid repeated lookups)
 _looked_up_icaos: set[str] = set()
@@ -318,7 +324,29 @@ def check_dump1090_service():
     return None
 
 
-def parse_sbs_stream(service_addr):
+def _reset_adsb_state() -> None:
+    global adsb_connected, adsb_messages_received, adsb_last_message_time, adsb_bytes_received, adsb_lines_received, _sbs_error_logged
+    adsb_connected = False
+    adsb_messages_received = 0
+    adsb_last_message_time = None
+    adsb_bytes_received = 0
+    adsb_lines_received = 0
+    _sbs_error_logged = False
+    with _adsb_connection_lock:
+        adsb_connected_sources.clear()
+
+
+def _set_adsb_connected(source_key: str, connected: bool) -> None:
+    global adsb_connected
+    with _adsb_connection_lock:
+        if connected:
+            adsb_connected_sources.add(source_key)
+        else:
+            adsb_connected_sources.discard(source_key)
+        adsb_connected = bool(adsb_connected_sources)
+
+
+def parse_sbs_stream(service_addr: str, source_tag: str | None = None):
     """Parse SBS format data from dump1090 SBS port."""
     global adsb_using_service, adsb_connected, adsb_messages_received, adsb_last_message_time, adsb_bytes_received, adsb_lines_received, _sbs_error_logged
 
@@ -327,26 +355,23 @@ def parse_sbs_stream(service_addr):
 
     host, port = service_addr.split(':')
     port = int(port)
+    source_label = source_tag or 'adsb'
 
-    logger.info(f"SBS stream parser started, connecting to {host}:{port}")
+    logger.info(f"SBS stream parser started ({source_label}), connecting to {host}:{port}")
-    adsb_connected = False
-    adsb_messages_received = 0
-    _sbs_error_logged = False
 
     while adsb_using_service:
         try:
             sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
             sock.settimeout(SBS_SOCKET_TIMEOUT)
             sock.connect((host, port))
-            adsb_connected = True
+            _set_adsb_connected(service_addr, True)
             _sbs_error_logged = False  # Reset so we log next error
-            logger.info("Connected to SBS stream")
+            logger.info(f"Connected to SBS stream ({source_label})")
 
             buffer = ""
             last_update = time.time()
             pending_updates = set()
-            adsb_bytes_received = 0
+            local_lines_received = 0
-            adsb_lines_received = 0
 
             while adsb_using_service:
                 try:
@@ -364,13 +389,14 @@ def parse_sbs_stream(service_addr):
                             continue
 
                         adsb_lines_received += 1
+                        local_lines_received += 1
                         # Log first few lines for debugging
-                        if adsb_lines_received <= 3:
+                        if local_lines_received <= 3:
-                            logger.info(f"SBS line {adsb_lines_received}: {line[:100]}")
+                            logger.info(f"SBS line ({source_label}) {local_lines_received}: {line[:100]}")
 
                         parts = line.split(',')
                         if len(parts) < 11 or parts[0] != 'MSG':
-                            if adsb_lines_received <= 5:
+                            if local_lines_received <= 5:
                                 logger.debug(f"Skipping non-MSG line: {line[:50]}")
                             continue
 
@@ -421,6 +447,8 @@ def parse_sbs_stream(service_addr):
                                 try:
                                     aircraft['lat'] = float(parts[14])
                                     aircraft['lon'] = float(parts[15])
+                                    if source_label:
+                                        aircraft['position_source'] = source_label
                                 except (ValueError, TypeError):
                                     pass
 
@@ -494,18 +522,26 @@ def parse_sbs_stream(service_addr):
                     continue
 
             sock.close()
-            adsb_connected = False
+            _set_adsb_connected(service_addr, False)
         except OSError as e:
-            adsb_connected = False
+            _set_adsb_connected(service_addr, False)
             if not _sbs_error_logged:
                 logger.warning(f"SBS connection error: {e}, reconnecting...")
                 _sbs_error_logged = True
             time.sleep(SBS_RECONNECT_DELAY)
 
-    adsb_connected = False
+    _set_adsb_connected(service_addr, False)
     logger.info("SBS stream parser stopped")
 
 
+def _start_mlat_stream(host: str, port: int) -> str:
+    mlat_addr = f"{host}:{port}"
+    logger.info(f"Connecting to MLAT SBS at {mlat_addr}")
+    thread = threading.Thread(target=parse_sbs_stream, args=(mlat_addr, 'mlat'), daemon=True)
+    thread.start()
+    return mlat_addr
+
+
 @adsb_bp.route('/tools')
 def check_adsb_tools():
     """Check for ADS-B decoding tools and hardware."""
@@ -580,7 +616,7 @@ def adsb_session():
 @adsb_bp.route('/start', methods=['POST'])
 def start_adsb():
     """Start ADS-B tracking."""
-    global adsb_using_service, adsb_active_device
+    global adsb_using_service, adsb_active_device, adsb_active_sdr_type
 
     with app_module.adsb_lock:
         if adsb_using_service:
@@ -601,10 +637,22 @@ def start_adsb():
         device = validate_device_index(data.get('device', '0'))
     except ValueError as e:
         return jsonify({'status': 'error', 'message': str(e)}), 400
+    _reset_adsb_state()
 
     # Check for remote SBS connection (e.g., remote dump1090)
     remote_sbs_host = data.get('remote_sbs_host')
     remote_sbs_port = data.get('remote_sbs_port', 30003)
+    mlat_sbs_host = (data.get('mlat_sbs_host') or '').strip()
+    mlat_sbs_port = data.get('mlat_sbs_port', ADSB_MLAT_SBS_PORT)
+    if not mlat_sbs_host and ADSB_MLAT_ENABLED and ADSB_MLAT_SBS_HOST:
+        mlat_sbs_host = ADSB_MLAT_SBS_HOST
+        mlat_sbs_port = ADSB_MLAT_SBS_PORT
+    if mlat_sbs_host:
+        try:
+            mlat_sbs_host = validate_rtl_tcp_host(mlat_sbs_host)
+            mlat_sbs_port = validate_rtl_tcp_port(mlat_sbs_port)
+        except ValueError as e:
+            return jsonify({'status': 'error', 'message': str(e)}), 400
 
     if remote_sbs_host:
         # Validate and connect to remote dump1090 SBS output
@@ -617,8 +665,10 @@ def start_adsb():
         remote_addr = f"{remote_sbs_host}:{remote_sbs_port}"
         logger.info(f"Connecting to remote dump1090 SBS at {remote_addr}")
         adsb_using_service = True
-        thread = threading.Thread(target=parse_sbs_stream, args=(remote_addr,), daemon=True)
+        thread = threading.Thread(target=parse_sbs_stream, args=(remote_addr, 'adsb'), daemon=True)
         thread.start()
+        if mlat_sbs_host:
+            _start_mlat_stream(mlat_sbs_host, mlat_sbs_port)
         session = _record_session_start(
             device_index=device,
             sdr_type='remote',
@@ -638,8 +688,10 @@ def start_adsb():
     if existing_service:
         logger.info(f"Found existing dump1090 service at {existing_service}")
         adsb_using_service = True
-        thread = threading.Thread(target=parse_sbs_stream, args=(existing_service,), daemon=True)
+        thread = threading.Thread(target=parse_sbs_stream, args=(existing_service, 'adsb'), daemon=True)
         thread.start()
+        if mlat_sbs_host:
+            _start_mlat_stream(mlat_sbs_host, mlat_sbs_port)
         session = _record_session_start(
             device_index=device,
             sdr_type='external',
@@ -689,7 +741,7 @@ def start_adsb():
 
     # Check if device is available before starting local dump1090
     device_int = int(device)
-    error = app_module.claim_sdr_device(device_int, 'adsb')
+    error = app_module.claim_sdr_device(device_int, 'adsb', sdr_type.value)
     if error:
         return jsonify({
             'status': 'error',
@@ -726,7 +778,7 @@ def start_adsb():
 
         if app_module.adsb_process.poll() is not None:
             # Process exited - release device and get error message
-            app_module.release_sdr_device(device_int)
+            app_module.release_sdr_device(device_int, sdr_type.value)
             stderr_output = ''
             if app_module.adsb_process.stderr:
                 try:
@@ -772,9 +824,12 @@ def start_adsb():
             })
 
         adsb_using_service = True
-        adsb_active_device = device  # Track which device is being used
+        adsb_active_device = device  # Track which device index is being used
-        thread = threading.Thread(target=parse_sbs_stream, args=(f'localhost:{ADSB_SBS_PORT}',), daemon=True)
+        adsb_active_sdr_type = sdr_type.value
+        thread = threading.Thread(target=parse_sbs_stream, args=(f'localhost:{ADSB_SBS_PORT}', 'adsb'), daemon=True)
         thread.start()
+        if mlat_sbs_host:
+            _start_mlat_stream(mlat_sbs_host, mlat_sbs_port)
 
         session = _record_session_start(
             device_index=device,
@@ -792,14 +847,14 @@ def start_adsb():
         })
     except Exception as e:
         # Release device on failure
-        app_module.release_sdr_device(device_int)
+        app_module.release_sdr_device(device_int, sdr_type.value)
         return jsonify({'status': 'error', 'message': str(e)})
 
 
 @adsb_bp.route('/stop', methods=['POST'])
 def stop_adsb():
     """Stop ADS-B tracking."""
-    global adsb_using_service, adsb_active_device
+    global adsb_using_service, adsb_active_device, adsb_active_sdr_type
     data = request.json or {}
     stop_source = data.get('source')
     stopped_by = request.remote_addr
@@ -823,10 +878,12 @@ def stop_adsb():
 
         # Release device from registry
         if adsb_active_device is not None:
-            app_module.release_sdr_device(adsb_active_device)
+            app_module.release_sdr_device(adsb_active_device, adsb_active_sdr_type or 'rtlsdr')
 
         adsb_using_service = False
         adsb_active_device = None
+        adsb_active_sdr_type = None
+        _reset_adsb_state()
 
     app_module.adsb_aircraft.clear()
     _looked_up_icaos.clear()
@@ -868,6 +925,7 @@ def adsb_dashboard():
         'adsb_dashboard.html',
         shared_observer_location=SHARED_OBSERVER_LOCATION_ENABLED,
         adsb_auto_start=ADSB_AUTO_START,
+        adsb_mlat_enabled=ADSB_MLAT_ENABLED,
     )
 
 

routes/ais.py

@@ -44,6 +44,7 @@ ais_connected = False
 ais_messages_received = 0
 ais_last_message_time = None
 ais_active_device = None
+ais_active_sdr_type = None
 _ais_error_logged = True
 
 # Common installation paths for AIS-catcher
@@ -326,7 +327,7 @@ def ais_status():
 @ais_bp.route('/start', methods=['POST'])
 def start_ais():
     """Start AIS tracking."""
-    global ais_running, ais_active_device
+    global ais_running, ais_active_device, ais_active_sdr_type
 
     with app_module.ais_lock:
         if ais_running:
@@ -373,7 +374,7 @@ def start_ais():
 
     # Check if device is available
     device_int = int(device)
-    error = app_module.claim_sdr_device(device_int, 'ais')
+    error = app_module.claim_sdr_device(device_int, 'ais', sdr_type.value)
     if error:
         return jsonify({
             'status': 'error',
@@ -412,7 +413,7 @@ def start_ais():
 
         if app_module.ais_process.poll() is not None:
             # Release device on failure
-            app_module.release_sdr_device(device_int)
+            app_module.release_sdr_device(device_int, sdr_type.value)
             stderr_output = ''
             if app_module.ais_process.stderr:
                 try:
@@ -426,6 +427,7 @@ def start_ais():
 
         ais_running = True
         ais_active_device = device
+        ais_active_sdr_type = sdr_type.value
 
         # Start TCP parser thread
         thread = threading.Thread(target=parse_ais_stream, args=(tcp_port,), daemon=True)
@@ -439,7 +441,7 @@ def start_ais():
         })
     except Exception as e:
         # Release device on failure
-        app_module.release_sdr_device(device_int)
+        app_module.release_sdr_device(device_int, sdr_type.value)
         logger.error(f"Failed to start AIS-catcher: {e}")
         return jsonify({'status': 'error', 'message': str(e)}), 500
 
@@ -466,10 +468,11 @@ def stop_ais():
 
         # Release device from registry
         if ais_active_device is not None:
-            app_module.release_sdr_device(ais_active_device)
+            app_module.release_sdr_device(ais_active_device, ais_active_sdr_type or 'rtlsdr')
 
         ais_running = False
         ais_active_device = None
+        ais_active_sdr_type = None
 
     app_module.ais_vessels.clear()
     return jsonify({'status': 'stopped'})

routes/dmr.py

@@ -3,6 +3,7 @@
 from __future__ import annotations
 
 import os
+import json
 import queue
 import re
 import select
@@ -50,7 +51,8 @@ dmr_active_device: Optional[int] = None
 # freeze stderr / text data output).
 _active_ffmpeg_stdin: Optional[object] = None  # set by stream endpoint
 
-VALID_PROTOCOLS = ['auto', 'dmr', 'p25', 'nxdn', 'dstar', 'provoice']
+VALID_PROTOCOLS = ['auto', 'dmr', 'p25', 'p25p2', 'nxdn', 'dstar', 'provoice']
+VALID_DEMODS = ['nfm', 'fm']
 
 # Classic dsd flags
 _DSD_PROTOCOL_FLAGS = {
@@ -71,6 +73,7 @@ _DSD_FME_PROTOCOL_FLAGS = {
     'auto': ['-ft'],       # XDMA: auto-detect DMR/P25/YSF
     'dmr': ['-fs'],        # DMR Simplex (-fd is D-STAR in dsd-fme!)
     'p25': ['-f1'],        # P25 Phase 1 (-fp is ProVoice in dsd-fme!)
+    'p25p2': ['-f2'],      # P25 Phase 2
     'nxdn': ['-fn'],       # NXDN96
     'dstar': ['-fd'],      # D-STAR (-fd in dsd-fme, NOT DMR!)
     'provoice': ['-fp'],   # ProVoice (-fp in dsd-fme, not -fv)
@@ -80,7 +83,8 @@ _DSD_FME_PROTOCOL_FLAGS = {
 # sync reliability vs letting dsd-fme auto-detect modulation type.
 _DSD_FME_MODULATION = {
     'dmr': ['-mc'],        # C4FM
-    'p25': ['-mc'],        # C4FM (Phase 1; Phase 2 would use -mq)
+    'p25': ['-mc'],        # C4FM (Phase 1)
+    'p25p2': ['-mq'],      # CQPSK (Phase 2)
     'nxdn': ['-mc'],       # C4FM
 }
 
@@ -114,6 +118,78 @@ def find_ffmpeg() -> str | None:
     return shutil.which('ffmpeg')
 
 
+def _coerce_int(value) -> int | None:
+    try:
+        return int(value)
+    except (TypeError, ValueError):
+        return None
+
+
+def _parse_dsd_json(payload: dict, ts: str) -> dict | None:
+    """Parse JSON output lines from dsd-fme into events."""
+    event_type = str(payload.get('type') or payload.get('event') or payload.get('msg') or payload.get('kind') or '').lower()
+    nested = payload.get('data') if isinstance(payload.get('data'), dict) else {}
+
+    def first_of(keys):
+        for obj in (payload, nested):
+            for key in keys:
+                if key in obj and obj[key] is not None:
+                    return obj[key]
+        return None
+
+    talkgroup = _coerce_int(first_of([
+        'tg', 'tgt', 'talkgroup', 'talk_group', 'tgid',
+        'group', 'group_id', 'groupId', 'dst', 'dest',
+        'destination', 'target'
+    ]))
+    source = _coerce_int(first_of([
+        'src', 'source', 'src_id', 'source_id', 'sourceId',
+        'uid', 'unit', 'radio', 'rid', 'radio_id', 'radioId'
+    ]))
+    slot = _coerce_int(first_of(['slot', 'timeslot', 'time_slot', 'ts']))
+    nac = first_of(['nac'])
+    protocol = first_of(['protocol', 'mode', 'system', 'sys', 'network'])
+
+    if talkgroup is not None and source is not None:
+        event = {
+            'type': 'call',
+            'talkgroup': talkgroup,
+            'source_id': source,
+            'timestamp': ts,
+        }
+        if slot is not None:
+            event['slot'] = slot
+        if protocol:
+            event['protocol'] = str(protocol)
+        return event
+
+    if nac is not None:
+        return {'type': 'nac', 'nac': str(nac), 'timestamp': ts}
+
+    if 'sync' in event_type:
+        return {
+            'type': 'sync',
+            'protocol': str(protocol or event_type),
+            'timestamp': ts,
+        }
+
+    voice_flag = first_of(['voice', 'voice_frame', 'voiceFrame'])
+    if 'voice' in event_type or voice_flag is True:
+        event = {
+            'type': 'voice',
+            'detail': str(first_of(['detail', 'text']) or event_type or 'voice'),
+            'timestamp': ts,
+        }
+        if slot is not None:
+            event['slot'] = slot
+        return event
+
+    if protocol:
+        return {'type': 'sync', 'protocol': str(protocol), 'timestamp': ts}
+
+    return None
+
+
 def parse_dsd_output(line: str) -> dict | None:
     """Parse a line of DSD stderr output into a structured event.
 
@@ -124,6 +200,46 @@ def parse_dsd_output(line: str) -> dict | None:
     if not line:
         return None
 
+    ts = datetime.now().strftime('%H:%M:%S')
+
+    # Frame-level error / OK indicators (useful for quality metrics)
+    if re.search(r'\bDUID\s+ERR\b', line, re.IGNORECASE):
+        return {
+            'type': 'frame_error',
+            'kind': 'duid',
+            'detail': line[:200],
+            'timestamp': ts,
+        }
+    if re.search(r'\bR-?S\s+ERR\b', line, re.IGNORECASE):
+        return {
+            'type': 'frame_error',
+            'kind': 'rs',
+            'detail': line[:200],
+            'timestamp': ts,
+        }
+    if re.search(r'\bP25p2\b.*\b4V\b', line, re.IGNORECASE):
+        return {
+            'type': 'frame_ok',
+            'kind': 'p25p2',
+            'timestamp': ts,
+        }
+
+    # If dsd-fme is emitting JSON (via -J), parse it first.
+    if line.startswith('{') and line.endswith('}'):
+        try:
+            payload = json.loads(line)
+        except json.JSONDecodeError:
+            payload = None
+        if isinstance(payload, dict):
+            parsed = _parse_dsd_json(payload, ts)
+            if parsed:
+                return parsed
+            return {
+                'type': 'raw',
+                'text': line[:200],
+                'timestamp': ts,
+            }
+
     # Skip DSD/dsd-fme startup banner lines (ASCII art, version info, etc.)
     # Only filter lines that are purely decorative — dsd-fme uses box-drawing
     # characters (│, ─) as column separators in DATA lines, so we must not
@@ -134,8 +250,6 @@ def parse_dsd_output(line: str) -> dict | None:
     if re.match(r'^\s*(Build Version|MBElib|CODEC2|Audio (Out|In)|Decoding )', line):
         return None
 
-    ts = datetime.now().strftime('%H:%M:%S')
-
     # Sync detection: "Sync: +DMR (data)" or "Sync: +P25 Phase 1"
     sync_match = re.match(r'Sync:\s*\+?(\S+.*)', line)
     if sync_match:
@@ -398,11 +512,19 @@ def start_dmr() -> Response:
         device = validate_device_index(data.get('device', 0))
         protocol = str(data.get('protocol', 'auto')).lower()
         ppm = validate_ppm(data.get('ppm', 0))
+        fine_tune = int(data.get('fineTune', 0) or 0)
+        demod = str(data.get('demod', 'nfm')).lower()
     except (ValueError, TypeError) as e:
         return jsonify({'status': 'error', 'message': f'Invalid parameter: {e}'}), 400
 
     if protocol not in VALID_PROTOCOLS:
         return jsonify({'status': 'error', 'message': f'Invalid protocol. Use: {", ".join(VALID_PROTOCOLS)}'}), 400
+    if demod not in VALID_DEMODS:
+        return jsonify({'status': 'error', 'message': f'Invalid demod. Use: {", ".join(VALID_DEMODS)}'}), 400
+    if protocol == 'p25p2' and not is_fme:
+        return jsonify({'status': 'error', 'message': 'P25 Phase 2 requires dsd-fme.'}), 400
+    if abs(fine_tune) > 20000:
+        return jsonify({'status': 'error', 'message': 'Fine tune offset too large (max +/- 20000 Hz).'}), 400
 
     # Clear stale queue
     try:
@@ -420,7 +542,7 @@ def start_dmr() -> Response:
 
     dmr_active_device = device
 
-    freq_hz = int(frequency * 1e6)
+    freq_hz = int((frequency * 1e6) + fine_tune)
 
     # Build rtl_fm command (48kHz sample rate for DSD).
     # Squelch disabled (-l 0): rtl_fm's squelch chops the bitstream
@@ -428,7 +550,7 @@ def start_dmr() -> Response:
     # internally via its own frame-sync detection.
     rtl_cmd = [
         rtl_fm_path,
-        '-M', 'fm',
+        '-M', demod,
         '-f', str(freq_hz),
         '-s', '48000',
         '-g', str(gain),
@@ -484,6 +606,9 @@ def start_dmr() -> Response:
         # Allow rtl_fm to send directly to dsd
         dmr_rtl_process.stdout.close()
 
+        # Mark running before starting mux so it doesn't exit immediately.
+        dmr_running = True
+
         # Start mux thread: always drains dsd-fme stdout to prevent the
         # process from blocking (which would freeze stderr / text data).
         # ffmpeg is started lazily per-client in /dmr/audio/stream.
@@ -509,6 +634,7 @@ def start_dmr() -> Response:
                 dsd_err = dmr_dsd_process.stderr.read().decode('utf-8', errors='replace')[:500]
             logger.error(f"DSD pipeline died: rtl_fm rc={rtl_rc} err={rtl_err!r}, dsd rc={dsd_rc} err={dsd_err!r}")
             # Terminate surviving processes and unregister all
+            dmr_running = False
             dmr_has_audio = False
             for proc in [dmr_dsd_process, dmr_rtl_process]:
                 if proc and proc.poll() is None:
@@ -547,7 +673,6 @@ def start_dmr() -> Response:
 
         threading.Thread(target=_drain_rtl_stderr, args=(dmr_rtl_process,), daemon=True).start()
 
-        dmr_running = True
         dmr_thread = threading.Thread(
             target=stream_dsd_output,
             args=(dmr_rtl_process, dmr_dsd_process),
@@ -564,6 +689,8 @@ def start_dmr() -> Response:
 
     except Exception as e:
         logger.error(f"Failed to start DMR: {e}")
+        dmr_running = False
+        dmr_has_audio = False
         if dmr_active_device is not None:
             app_module.release_sdr_device(dmr_active_device)
             dmr_active_device = None

routes/listening_post.py

@@ -51,7 +51,9 @@ scanner_lock = threading.Lock()
 scanner_paused = False
 scanner_current_freq = 0.0
 scanner_active_device: Optional[int] = None
+scanner_active_sdr_type: Optional[str] = None
 listening_active_device: Optional[int] = None
+listening_active_sdr_type: Optional[str] = None
 scanner_power_process: Optional[subprocess.Popen] = None
 scanner_config = {
     'start_freq': 88.0,
@@ -937,6 +939,7 @@ def check_tools() -> Response:
 def start_scanner() -> Response:
     """Start the frequency scanner."""
     global scanner_thread, scanner_running, scanner_config, scanner_active_device, listening_active_device
+    global scanner_active_sdr_type, listening_active_sdr_type
 
     with scanner_lock:
         if scanner_running:
@@ -1003,10 +1006,11 @@ def start_scanner() -> Response:
             }), 503
         # Release listening device if active
         if listening_active_device is not None:
-            app_module.release_sdr_device(listening_active_device)
+            app_module.release_sdr_device(listening_active_device, listening_active_sdr_type or 'rtlsdr')
             listening_active_device = None
+            listening_active_sdr_type = None
         # Claim device for scanner
-        error = app_module.claim_sdr_device(scanner_config['device'], 'scanner')
+        error = app_module.claim_sdr_device(scanner_config['device'], 'scanner', sdr_type)
         if error:
             return jsonify({
                 'status': 'error',
@@ -1014,6 +1018,7 @@ def start_scanner() -> Response:
                 'message': error
             }), 409
         scanner_active_device = scanner_config['device']
+        scanner_active_sdr_type = sdr_type
         scanner_running = True
         scanner_thread = threading.Thread(target=scanner_loop_power, daemon=True)
         scanner_thread.start()
@@ -1031,9 +1036,10 @@ def start_scanner() -> Response:
                     'message': f'rx_fm not found. Install SoapySDR utilities for {sdr_type}.'
                 }), 503
         if listening_active_device is not None:
-            app_module.release_sdr_device(listening_active_device)
+            app_module.release_sdr_device(listening_active_device, listening_active_sdr_type or 'rtlsdr')
             listening_active_device = None
-        error = app_module.claim_sdr_device(scanner_config['device'], 'scanner')
+            listening_active_sdr_type = None
+        error = app_module.claim_sdr_device(scanner_config['device'], 'scanner', sdr_type)
         if error:
             return jsonify({
                 'status': 'error',
@@ -1041,6 +1047,7 @@ def start_scanner() -> Response:
                 'message': error
             }), 409
         scanner_active_device = scanner_config['device']
+        scanner_active_sdr_type = sdr_type
 
         scanner_running = True
         scanner_thread = threading.Thread(target=scanner_loop, daemon=True)
@@ -1055,7 +1062,7 @@ def start_scanner() -> Response:
 @listening_post_bp.route('/scanner/stop', methods=['POST'])
 def stop_scanner() -> Response:
     """Stop the frequency scanner."""
-    global scanner_running, scanner_active_device, scanner_power_process
+    global scanner_running, scanner_active_device, scanner_power_process, scanner_active_sdr_type
 
     scanner_running = False
     _stop_audio_stream()
@@ -1070,8 +1077,9 @@ def stop_scanner() -> Response:
                 pass
         scanner_power_process = None
     if scanner_active_device is not None:
-        app_module.release_sdr_device(scanner_active_device)
+        app_module.release_sdr_device(scanner_active_device, scanner_active_sdr_type or 'rtlsdr')
         scanner_active_device = None
+        scanner_active_sdr_type = None
 
     return jsonify({'status': 'stopped'})
 
@@ -1243,13 +1251,15 @@ def get_presets() -> Response:
 def start_audio() -> Response:
     """Start audio at specific frequency (manual mode)."""
     global scanner_running, scanner_active_device, listening_active_device, scanner_power_process, scanner_thread
+    global scanner_active_sdr_type, listening_active_sdr_type, waterfall_active_sdr_type
 
     # Stop scanner if running
     if scanner_running:
         scanner_running = False
         if scanner_active_device is not None:
-            app_module.release_sdr_device(scanner_active_device)
+            app_module.release_sdr_device(scanner_active_device, scanner_active_sdr_type or 'rtlsdr')
             scanner_active_device = None
+            scanner_active_sdr_type = None
         if scanner_thread and scanner_thread.is_alive():
             try:
                 scanner_thread.join(timeout=2.0)
@@ -1306,7 +1316,7 @@ def start_audio() -> Response:
     scanner_config['sdr_type'] = sdr_type
 
     # Stop waterfall if it's using the same SDR (SSE path)
-    if waterfall_running and waterfall_active_device == device:
+    if waterfall_running and waterfall_active_device == device and waterfall_active_sdr_type == sdr_type:
         _stop_waterfall_internal()
         time.sleep(0.2)
 
@@ -1316,8 +1326,9 @@ def start_audio() -> Response:
     # to give the USB device time to be fully released.
     if listening_active_device is None or listening_active_device != device:
         if listening_active_device is not None:
-            app_module.release_sdr_device(listening_active_device)
+            app_module.release_sdr_device(listening_active_device, listening_active_sdr_type or 'rtlsdr')
             listening_active_device = None
+            listening_active_sdr_type = None
 
         error = None
         max_claim_attempts = 6
@@ -1326,10 +1337,10 @@ def start_audio() -> Response:
             # attempt — the WebSocket handler may not have finished
             # cleanup yet.
             device_status = app_module.get_sdr_device_status()
-            if device_status.get(device) == 'waterfall':
+            if device_status.get(device, {}).get(sdr_type) == 'waterfall':
-                app_module.release_sdr_device(device)
+                app_module.release_sdr_device(device, sdr_type)
 
-            error = app_module.claim_sdr_device(device, 'listening')
+            error = app_module.claim_sdr_device(device, 'listening', sdr_type)
             if not error:
                 break
             if attempt < max_claim_attempts - 1:
@@ -1346,6 +1357,7 @@ def start_audio() -> Response:
                 'message': error
             }), 409
         listening_active_device = device
+        listening_active_sdr_type = sdr_type
 
     _start_audio_stream(frequency, modulation)
 
@@ -1365,11 +1377,12 @@ def start_audio() -> Response:
 @listening_post_bp.route('/audio/stop', methods=['POST'])
 def stop_audio() -> Response:
     """Stop audio."""
-    global listening_active_device
+    global listening_active_device, listening_active_sdr_type
     _stop_audio_stream()
     if listening_active_device is not None:
-        app_module.release_sdr_device(listening_active_device)
+        app_module.release_sdr_device(listening_active_device, listening_active_sdr_type or 'rtlsdr')
         listening_active_device = None
+        listening_active_sdr_type = None
     return jsonify({'status': 'stopped'})
 
 
@@ -1549,6 +1562,7 @@ waterfall_running = False
 waterfall_lock = threading.Lock()
 waterfall_queue: queue.Queue = queue.Queue(maxsize=200)
 waterfall_active_device: Optional[int] = None
+waterfall_active_sdr_type: Optional[str] = None
 waterfall_config = {
     'start_freq': 88.0,
     'end_freq': 108.0,
@@ -1725,7 +1739,7 @@ def _waterfall_loop():
 
 def _stop_waterfall_internal() -> None:
     """Stop the waterfall display and release resources."""
-    global waterfall_running, waterfall_process, waterfall_active_device
+    global waterfall_running, waterfall_process, waterfall_active_device, waterfall_active_sdr_type
 
     waterfall_running = False
     if waterfall_process and waterfall_process.poll() is None:
@@ -1740,14 +1754,15 @@ def _stop_waterfall_internal() -> None:
         waterfall_process = None
 
     if waterfall_active_device is not None:
-        app_module.release_sdr_device(waterfall_active_device)
+        app_module.release_sdr_device(waterfall_active_device, waterfall_active_sdr_type or 'rtlsdr')
         waterfall_active_device = None
+        waterfall_active_sdr_type = None
 
 
 @listening_post_bp.route('/waterfall/start', methods=['POST'])
 def start_waterfall() -> Response:
     """Start the waterfall/spectrogram display."""
-    global waterfall_thread, waterfall_running, waterfall_config, waterfall_active_device
+    global waterfall_thread, waterfall_running, waterfall_config, waterfall_active_device, waterfall_active_sdr_type
 
     with waterfall_lock:
         if waterfall_running:
@@ -1788,11 +1803,12 @@ def start_waterfall() -> Response:
         pass
 
     # Claim SDR device
-    error = app_module.claim_sdr_device(waterfall_config['device'], 'waterfall')
+    error = app_module.claim_sdr_device(waterfall_config['device'], 'waterfall', 'rtlsdr')
     if error:
         return jsonify({'status': 'error', 'error_type': 'DEVICE_BUSY', 'message': error}), 409
 
     waterfall_active_device = waterfall_config['device']
+    waterfall_active_sdr_type = 'rtlsdr'
     waterfall_running = True
     waterfall_thread = threading.Thread(target=_waterfall_loop, daemon=True)
     waterfall_thread.start()

routes/pager.py

@@ -34,6 +34,7 @@ pager_bp = Blueprint('pager', __name__)
 
 # Track which device is being used
 pager_active_device: int | None = None
+pager_active_sdr_type: str | None = None
 
 
 def parse_multimon_output(line: str) -> dict[str, str] | None:
@@ -205,7 +206,7 @@ def stream_decoder(master_fd: int, process: subprocess.Popen[bytes]) -> None:
     except Exception as e:
         app_module.output_queue.put({'type': 'error', 'text': str(e)})
     finally:
-        global pager_active_device
+        global pager_active_device, pager_active_sdr_type
         try:
             os.close(master_fd)
         except OSError:
@@ -234,13 +235,14 @@ def stream_decoder(master_fd: int, process: subprocess.Popen[bytes]) -> None:
             app_module.current_process = None
         # Release SDR device
         if pager_active_device is not None:
-            app_module.release_sdr_device(pager_active_device)
+            app_module.release_sdr_device(pager_active_device, pager_active_sdr_type or 'rtlsdr')
             pager_active_device = None
+            pager_active_sdr_type = None
 
 
 @pager_bp.route('/start', methods=['POST'])
 def start_decoding() -> Response:
-    global pager_active_device
+    global pager_active_device, pager_active_sdr_type
 
     with app_module.process_lock:
         if app_module.current_process:
@@ -265,6 +267,13 @@ def start_decoding() -> Response:
         except (ValueError, TypeError):
             return jsonify({'status': 'error', 'message': 'Invalid squelch value'}), 400
 
+        # Get SDR type and build command via abstraction layer
+        sdr_type_str = data.get('sdr_type', 'rtlsdr')
+        try:
+            sdr_type = SDRType(sdr_type_str)
+        except ValueError:
+            sdr_type = SDRType.RTL_SDR
+
         # Check for rtl_tcp (remote SDR) connection
         rtl_tcp_host = data.get('rtl_tcp_host')
         rtl_tcp_port = data.get('rtl_tcp_port', 1234)
@@ -272,7 +281,7 @@ def start_decoding() -> Response:
         # Claim local device if not using remote rtl_tcp
         if not rtl_tcp_host:
             device_int = int(device)
-            error = app_module.claim_sdr_device(device_int, 'pager')
+            error = app_module.claim_sdr_device(device_int, 'pager', sdr_type.value)
             if error:
                 return jsonify({
                     'status': 'error',
@@ -280,14 +289,16 @@ def start_decoding() -> Response:
                     'message': error
                 }), 409
             pager_active_device = device_int
+            pager_active_sdr_type = sdr_type.value
 
         # Validate protocols
         valid_protocols = ['POCSAG512', 'POCSAG1200', 'POCSAG2400', 'FLEX']
         protocols = data.get('protocols', valid_protocols)
         if not isinstance(protocols, list):
             if pager_active_device is not None:
-                app_module.release_sdr_device(pager_active_device)
+                app_module.release_sdr_device(pager_active_device, pager_active_sdr_type or 'rtlsdr')
                 pager_active_device = None
+                pager_active_sdr_type = None
             return jsonify({'status': 'error', 'message': 'Protocols must be a list'}), 400
         protocols = [p for p in protocols if p in valid_protocols]
         if not protocols:
@@ -312,13 +323,6 @@ def start_decoding() -> Response:
             elif proto == 'FLEX':
                 decoders.extend(['-a', 'FLEX'])
 
-        # Get SDR type and build command via abstraction layer
-        sdr_type_str = data.get('sdr_type', 'rtlsdr')
-        try:
-            sdr_type = SDRType(sdr_type_str)
-        except ValueError:
-            sdr_type = SDRType.RTL_SDR
-
         if rtl_tcp_host:
             # Validate and create network device
             try:
@@ -428,8 +432,9 @@ def start_decoding() -> Response:
                     pass
             # Release device on failure
             if pager_active_device is not None:
-                app_module.release_sdr_device(pager_active_device)
+                app_module.release_sdr_device(pager_active_device, pager_active_sdr_type or 'rtlsdr')
                 pager_active_device = None
+                pager_active_sdr_type = None
             return jsonify({'status': 'error', 'message': f'Tool not found: {e.filename}'})
         except Exception as e:
             # Kill orphaned rtl_fm process if it was started
@@ -443,14 +448,15 @@ def start_decoding() -> Response:
                     pass
             # Release device on failure
             if pager_active_device is not None:
-                app_module.release_sdr_device(pager_active_device)
+                app_module.release_sdr_device(pager_active_device, pager_active_sdr_type or 'rtlsdr')
                 pager_active_device = None
+                pager_active_sdr_type = None
             return jsonify({'status': 'error', 'message': str(e)})
 
 
 @pager_bp.route('/stop', methods=['POST'])
 def stop_decoding() -> Response:
-    global pager_active_device
+    global pager_active_device, pager_active_sdr_type
 
     with app_module.process_lock:
         if app_module.current_process:
@@ -487,8 +493,9 @@ def stop_decoding() -> Response:
 
             # Release device from registry
             if pager_active_device is not None:
-                app_module.release_sdr_device(pager_active_device)
+                app_module.release_sdr_device(pager_active_device, pager_active_sdr_type or 'rtlsdr')
                 pager_active_device = None
+                pager_active_sdr_type = None
 
             return jsonify({'status': 'stopped'})
 

routes/sensor.py

@@ -27,6 +27,7 @@ sensor_bp = Blueprint('sensor', __name__)
 
 # Track which device is being used
 sensor_active_device: int | None = None
+sensor_active_sdr_type: str | None = None
 
 
 def stream_sensor_output(process: subprocess.Popen[bytes]) -> None:
@@ -75,7 +76,7 @@ def stream_sensor_output(process: subprocess.Popen[bytes]) -> None:
     except Exception as e:
         app_module.sensor_queue.put({'type': 'error', 'text': str(e)})
     finally:
-        global sensor_active_device
+        global sensor_active_device, sensor_active_sdr_type
         # Ensure process is terminated
         try:
             process.terminate()
@@ -91,8 +92,9 @@ def stream_sensor_output(process: subprocess.Popen[bytes]) -> None:
             app_module.sensor_process = None
         # Release SDR device
         if sensor_active_device is not None:
-            app_module.release_sdr_device(sensor_active_device)
+            app_module.release_sdr_device(sensor_active_device, sensor_active_sdr_type or 'rtlsdr')
             sensor_active_device = None
+            sensor_active_sdr_type = None
 
 
 @sensor_bp.route('/sensor/status')
@@ -105,7 +107,7 @@ def sensor_status() -> Response:
 
 @sensor_bp.route('/start_sensor', methods=['POST'])
 def start_sensor() -> Response:
-    global sensor_active_device
+    global sensor_active_device, sensor_active_sdr_type
 
     with app_module.sensor_lock:
         if app_module.sensor_process:
@@ -122,6 +124,13 @@ def start_sensor() -> Response:
         except ValueError as e:
             return jsonify({'status': 'error', 'message': str(e)}), 400
 
+        # Get SDR type and build command via abstraction layer
+        sdr_type_str = data.get('sdr_type', 'rtlsdr')
+        try:
+            sdr_type = SDRType(sdr_type_str)
+        except ValueError:
+            sdr_type = SDRType.RTL_SDR
+
         # Check for rtl_tcp (remote SDR) connection
         rtl_tcp_host = data.get('rtl_tcp_host')
         rtl_tcp_port = data.get('rtl_tcp_port', 1234)
@@ -129,7 +138,7 @@ def start_sensor() -> Response:
         # Claim local device if not using remote rtl_tcp
         if not rtl_tcp_host:
             device_int = int(device)
-            error = app_module.claim_sdr_device(device_int, 'sensor')
+            error = app_module.claim_sdr_device(device_int, 'sensor', sdr_type.value)
             if error:
                 return jsonify({
                     'status': 'error',
@@ -137,6 +146,7 @@ def start_sensor() -> Response:
                     'message': error
                 }), 409
             sensor_active_device = device_int
+            sensor_active_sdr_type = sdr_type.value
 
         # Clear queue
         while not app_module.sensor_queue.empty():
@@ -145,13 +155,6 @@ def start_sensor() -> Response:
             except queue.Empty:
                 break
 
-        # Get SDR type and build command via abstraction layer
-        sdr_type_str = data.get('sdr_type', 'rtlsdr')
-        try:
-            sdr_type = SDRType(sdr_type_str)
-        except ValueError:
-            sdr_type = SDRType.RTL_SDR
-
         if rtl_tcp_host:
             # Validate and create network device
             try:
@@ -217,20 +220,22 @@ def start_sensor() -> Response:
         except FileNotFoundError:
             # Release device on failure
             if sensor_active_device is not None:
-                app_module.release_sdr_device(sensor_active_device)
+                app_module.release_sdr_device(sensor_active_device, sensor_active_sdr_type or 'rtlsdr')
                 sensor_active_device = None
+                sensor_active_sdr_type = None
             return jsonify({'status': 'error', 'message': 'rtl_433 not found. Install with: brew install rtl_433'})
         except Exception as e:
             # Release device on failure
             if sensor_active_device is not None:
-                app_module.release_sdr_device(sensor_active_device)
+                app_module.release_sdr_device(sensor_active_device, sensor_active_sdr_type or 'rtlsdr')
                 sensor_active_device = None
+                sensor_active_sdr_type = None
             return jsonify({'status': 'error', 'message': str(e)})
 
 
 @sensor_bp.route('/stop_sensor', methods=['POST'])
 def stop_sensor() -> Response:
-    global sensor_active_device
+    global sensor_active_device, sensor_active_sdr_type
 
     with app_module.sensor_lock:
         if app_module.sensor_process:
@@ -243,8 +248,9 @@ def stop_sensor() -> Response:
 
             # Release device from registry
             if sensor_active_device is not None:
-                app_module.release_sdr_device(sensor_active_device)
+                app_module.release_sdr_device(sensor_active_device, sensor_active_sdr_type or 'rtlsdr')
                 sensor_active_device = None
+                sensor_active_sdr_type = None
 
             return jsonify({'status': 'stopped'})
 

routes/waterfall_websocket.py

@@ -87,6 +87,7 @@ def init_waterfall_websocket(app: Flask):
         reader_thread = None
         stop_event = threading.Event()
         claimed_device = None
+        claimed_sdr_type = None
         # Queue for outgoing messages — only the main loop touches ws.send()
         send_queue = queue.Queue(maxsize=120)
 
@@ -141,8 +142,9 @@ def init_waterfall_websocket(app: Flask):
                         unregister_process(iq_process)
                         iq_process = None
                     if claimed_device is not None:
-                        app_module.release_sdr_device(claimed_device)
+                        app_module.release_sdr_device(claimed_device, claimed_sdr_type or 'rtlsdr')
                         claimed_device = None
+                        claimed_sdr_type = None
                     stop_event.clear()
                     # Flush stale frames from previous capture
                     while not send_queue.empty():
@@ -185,7 +187,7 @@ def init_waterfall_websocket(app: Flask):
                     end_freq = center_freq + effective_span_mhz / 2
 
                     # Claim the device
-                    claim_err = app_module.claim_sdr_device(device_index, 'waterfall')
+                    claim_err = app_module.claim_sdr_device(device_index, 'waterfall', sdr_type.value)
                     if claim_err:
                         ws.send(json.dumps({
                             'status': 'error',
@@ -194,6 +196,7 @@ def init_waterfall_websocket(app: Flask):
                         }))
                         continue
                     claimed_device = device_index
+                    claimed_sdr_type = sdr_type.value
 
                     # Build I/Q capture command
                     try:
@@ -208,8 +211,9 @@ def init_waterfall_websocket(app: Flask):
                             bias_t=bias_t,
                         )
                     except NotImplementedError as e:
-                        app_module.release_sdr_device(device_index)
+                        app_module.release_sdr_device(device_index, sdr_type.value)
                         claimed_device = None
+                        claimed_sdr_type = None
                         ws.send(json.dumps({
                             'status': 'error',
                             'message': str(e),
@@ -255,8 +259,9 @@ def init_waterfall_websocket(app: Flask):
                             safe_terminate(iq_process)
                             unregister_process(iq_process)
                             iq_process = None
-                        app_module.release_sdr_device(device_index)
+                        app_module.release_sdr_device(device_index, sdr_type.value)
                         claimed_device = None
+                        claimed_sdr_type = None
                         ws.send(json.dumps({
                             'status': 'error',
                             'message': f'Failed to start I/Q capture: {e}',
@@ -350,8 +355,9 @@ def init_waterfall_websocket(app: Flask):
                         unregister_process(iq_process)
                         iq_process = None
                     if claimed_device is not None:
-                        app_module.release_sdr_device(claimed_device)
+                        app_module.release_sdr_device(claimed_device, claimed_sdr_type or 'rtlsdr')
                         claimed_device = None
+                        claimed_sdr_type = None
                     stop_event.clear()
                     ws.send(json.dumps({'status': 'stopped'}))
 
@@ -366,7 +372,8 @@ def init_waterfall_websocket(app: Flask):
                 safe_terminate(iq_process)
                 unregister_process(iq_process)
             if claimed_device is not None:
-                app_module.release_sdr_device(claimed_device)
+                app_module.release_sdr_device(claimed_device, claimed_sdr_type or 'rtlsdr')
+                claimed_sdr_type = None
             # Complete WebSocket close handshake, then shut down the
             # raw socket so Werkzeug cannot write its HTTP 200 response
             # on top of the WebSocket stream (which browsers see as

static/js/modes/dmr.js

@@ -12,6 +12,9 @@ let dmrCallHistory = [];
 let dmrCurrentProtocol = '--';
 let dmrModeLabel = 'dmr';  // Protocol label for device reservation
 let dmrHasAudio = false;
+let dmrQualitySamples = [];
+let dmrQualityScore = null;
+let dmrSweepInProgress = false;
 
 // ============== BOOKMARKS ==============
 let dmrBookmarks = [];
@@ -69,7 +72,9 @@ function startDmr() {
     const protocol = document.getElementById('dmrProtocol')?.value || 'auto';
     const gain = parseInt(document.getElementById('dmrGain')?.value || 40);
     const ppm = parseInt(document.getElementById('dmrPPM')?.value || 0);
+    const fineTune = parseInt(document.getElementById('dmrFineTune')?.value || 0);
     const relaxCrc = document.getElementById('dmrRelaxCrc')?.checked || false;
+    const demod = document.getElementById('dmrDemod')?.value || 'nfm';
     const device = typeof getSelectedDevice === 'function' ? getSelectedDevice() : 0;
 
     // Use protocol name for device reservation so panel shows "D-STAR", "P25", etc.
@@ -83,19 +88,22 @@ function startDmr() {
     // Save settings to localStorage for persistence
     try {
         localStorage.setItem(DMR_SETTINGS_KEY, JSON.stringify({
-            frequency, protocol, gain, ppm, relaxCrc
+            frequency, protocol, gain, ppm, fineTune, relaxCrc, demod
         }));
     } catch (e) { /* localStorage unavailable */ }
 
-    fetch('/dmr/start', {
+    return fetch('/dmr/start', {
         method: 'POST',
         headers: { 'Content-Type': 'application/json' },
-        body: JSON.stringify({ frequency, protocol, gain, device, ppm, relaxCrc })
+        body: JSON.stringify({ frequency, protocol, gain, device, ppm, fineTune, relaxCrc, demod })
     })
     .then(r => r.json())
     .then(data => {
         if (data.status === 'started') {
             isDmrRunning = true;
+            dmrQualitySamples = [];
+            dmrQualityScore = null;
+            updateDmrQualityUI();
             dmrCallCount = 0;
             dmrSyncCount = 0;
             dmrCallHistory = [];
@@ -144,11 +152,14 @@ function startDmr() {
 
 function stopDmr() {
     stopDmrAudio();
-    fetch('/dmr/stop', { method: 'POST' })
+    return fetch('/dmr/stop', { method: 'POST' })
     .then(r => r.json())
     .then(() => {
         isDmrRunning = false;
         if (dmrEventSource) { dmrEventSource.close(); dmrEventSource = null; }
+        dmrQualitySamples = [];
+        dmrQualityScore = null;
+        updateDmrQualityUI();
         updateDmrUI();
         dmrEventType = 'stopped';
         dmrActivityTarget = 0;
@@ -194,6 +205,7 @@ function handleDmrMessage(msg) {
         const syncCountEl = document.getElementById('dmrSyncCount');
         if (syncCountEl) syncCountEl.textContent = dmrSyncCount;
     } else if (msg.type === 'call') {
+        recordDmrQuality(true);
         dmrCallCount++;
         const countEl = document.getElementById('dmrCallCount');
         if (countEl) countEl.textContent = dmrCallCount;
@@ -236,8 +248,14 @@ function handleDmrMessage(msg) {
 
     } else if (msg.type === 'slot') {
         // Update slot info in current call
+    } else if (msg.type === 'frame_ok') {
+        recordDmrQuality(true);
+    } else if (msg.type === 'frame_error') {
+        recordDmrQuality(false);
     } else if (msg.type === 'raw') {
         // Raw DSD output — triggers synthesizer activity via dmrSynthPulse
+    } else if (msg.type === 'voice') {
+        recordDmrQuality(true);
     } else if (msg.type === 'heartbeat') {
         // Decoder is alive and listening — keep synthesizer in listening state
         if (isDmrRunning && dmrSynthInitialized) {
@@ -280,6 +298,111 @@ function handleDmrMessage(msg) {
     }
 }
 
+// ============== QUALITY METER ==============
+
+function recordDmrQuality(ok) {
+    dmrQualitySamples.push(!!ok);
+    if (dmrQualitySamples.length > 200) dmrQualitySamples.shift();
+    const total = dmrQualitySamples.length;
+    if (total < 5) {
+        dmrQualityScore = null;
+        updateDmrQualityUI();
+        return;
+    }
+    const errors = dmrQualitySamples.reduce((sum, v) => sum + (v ? 0 : 1), 0);
+    dmrQualityScore = Math.max(0, Math.min(100, Math.round(100 * (1 - (errors / total)))));
+    updateDmrQualityUI();
+}
+
+function updateDmrQualityUI() {
+    const textEl = document.getElementById('dmrQualityText');
+    const barEl = document.getElementById('dmrQualityBar');
+    if (!textEl || !barEl) return;
+    if (dmrQualityScore == null) {
+        textEl.textContent = '--';
+        barEl.style.width = '0%';
+        barEl.style.background = 'var(--text-muted)';
+        return;
+    }
+    textEl.textContent = `${dmrQualityScore}%`;
+    barEl.style.width = `${dmrQualityScore}%`;
+    if (dmrQualityScore >= 80) {
+        barEl.style.background = 'var(--accent-green)';
+    } else if (dmrQualityScore >= 50) {
+        barEl.style.background = 'var(--accent-amber, #f59e0b)';
+    } else {
+        barEl.style.background = 'var(--accent-red)';
+    }
+}
+
+// ============== FINE TUNE SWEEP ==============
+
+async function sweepDmrFineTune() {
+    if (!isDmrRunning) {
+        if (typeof showNotification === 'function') {
+            showNotification('Digital Voice', 'Start the decoder before sweeping fine tune.');
+        }
+        return;
+    }
+    if (dmrSweepInProgress) return;
+    dmrSweepInProgress = true;
+
+    const freqEl = document.getElementById('dmrFrequency');
+    const protoEl = document.getElementById('dmrProtocol');
+    const gainEl = document.getElementById('dmrGain');
+    const ppmEl = document.getElementById('dmrPPM');
+    const fineEl = document.getElementById('dmrFineTune');
+    const crcEl = document.getElementById('dmrRelaxCrc');
+    const demodEl = document.getElementById('dmrDemod');
+    const sweepBtn = document.getElementById('dmrFineTuneSweepBtn');
+
+    const original = {
+        frequency: freqEl?.value,
+        protocol: protoEl?.value,
+        gain: gainEl?.value,
+        ppm: ppmEl?.value,
+        fineTune: fineEl?.value,
+        relaxCrc: crcEl?.checked,
+        demod: demodEl?.value,
+    };
+
+    if (sweepBtn) {
+        sweepBtn.disabled = true;
+        sweepBtn.textContent = 'Sweeping...';
+    }
+
+    const offsets = [-2000, -1500, -1000, -500, 0, 500, 1000, 1500, 2000];
+    let best = { offset: parseInt(original.fineTune || 0, 10) || 0, score: -1 };
+
+    for (const offset of offsets) {
+        if (fineEl) fineEl.value = offset;
+        await stopDmr();
+        await new Promise(r => setTimeout(r, 300));
+        await startDmr();
+        dmrQualitySamples = [];
+        dmrQualityScore = null;
+        updateDmrQualityUI();
+        await new Promise(r => setTimeout(r, 700));
+        await new Promise(r => setTimeout(r, 2500));
+        const score = dmrQualityScore == null ? 0 : dmrQualityScore;
+        if (score > best.score) best = { offset, score };
+    }
+
+    if (fineEl) fineEl.value = best.offset;
+    await stopDmr();
+    await new Promise(r => setTimeout(r, 300));
+    await startDmr();
+
+    if (sweepBtn) {
+        sweepBtn.disabled = false;
+        sweepBtn.textContent = 'Sweep Fine Tune';
+    }
+    dmrSweepInProgress = false;
+    if (typeof showNotification === 'function') {
+        showNotification('Digital Voice', `Sweep complete: best offset ${best.offset} Hz (${best.score}%)`);
+    }
+}
+
 // ============== UI ==============
 
 function updateDmrUI() {
@@ -616,12 +739,16 @@ function restoreDmrSettings() {
         const protoEl = document.getElementById('dmrProtocol');
         const gainEl = document.getElementById('dmrGain');
         const ppmEl = document.getElementById('dmrPPM');
+        const fineTuneEl = document.getElementById('dmrFineTune');
         const crcEl = document.getElementById('dmrRelaxCrc');
+        const demodEl = document.getElementById('dmrDemod');
         if (freqEl && s.frequency != null) freqEl.value = s.frequency;
         if (protoEl && s.protocol) protoEl.value = s.protocol;
         if (gainEl && s.gain != null) gainEl.value = s.gain;
         if (ppmEl && s.ppm != null) ppmEl.value = s.ppm;
+        if (fineTuneEl && s.fineTune != null) fineTuneEl.value = s.fineTune;
         if (crcEl && s.relaxCrc != null) crcEl.checked = s.relaxCrc;
+        if (demodEl && s.demod) demodEl.value = s.demod;
     } catch (e) { /* localStorage unavailable */ }
 }
 
@@ -770,3 +897,4 @@ window.addDmrBookmark = addDmrBookmark;
 window.addCurrentDmrFreqBookmark = addCurrentDmrFreqBookmark;
 window.removeDmrBookmark = removeDmrBookmark;
 window.dmrQuickTune = dmrQuickTune;
+window.sweepDmrFineTune = sweepDmrFineTune;

templates/ais_dashboard.html

@@ -449,7 +449,10 @@
                         devices.forEach((d, i) => {
                             const opt = document.createElement('option');
                             opt.value = d.index;
-                            opt.textContent = `SDR ${d.index}: ${d.name}`;
+                            const sdrType = (d.sdr_type || d.type || 'rtlsdr').toLowerCase();
+                            const sdrLabel = sdrType.toUpperCase();
+                            opt.dataset.sdrType = sdrType;
+                            opt.textContent = `SDR ${d.index} (${sdrLabel}): ${d.name}`;
                             aisSelect.appendChild(opt);
                         });
                     }
@@ -457,18 +460,23 @@
                     // Populate DSC device selector
                     const dscSelect = document.getElementById('dscDeviceSelect');
                     dscSelect.innerHTML = '';
-                    if (devices.length === 0) {
+                    const dscDevices = devices.filter(d => {
-                        dscSelect.innerHTML = '<option value="0">No devices</option>';
+                        const sdrType = (d.sdr_type || d.type || 'rtlsdr').toLowerCase();
+                        return sdrType === 'rtlsdr';
+                    });
+                    if (dscDevices.length === 0) {
+                        dscSelect.innerHTML = '<option value="0">No RTL-SDR found</option>';
                     } else {
-                        devices.forEach((d, i) => {
+                        dscDevices.forEach((d, i) => {
                             const opt = document.createElement('option');
                             opt.value = d.index;
-                            opt.textContent = `SDR ${d.index}: ${d.name}`;
+                            opt.dataset.sdrType = 'rtlsdr';
+                            opt.textContent = `SDR ${d.index} (RTLSDR): ${d.name}`;
                             dscSelect.appendChild(opt);
                         });
                         // Default to second device if available
-                        if (devices.length > 1) {
+                        if (dscDevices.length > 1) {
-                            dscSelect.value = devices[1].index;
+                            dscSelect.value = dscDevices[1].index;
                         }
                     }
                 })
@@ -546,7 +554,9 @@
         }
 
         function startTracking() {
-            const device = document.getElementById('aisDeviceSelect').value;
+            const aisSelect = document.getElementById('aisDeviceSelect');
+            const device = aisSelect.value;
+            const sdrType = (aisSelect.selectedOptions[0]?.dataset?.sdrType || 'rtlsdr').toLowerCase();
             const gain = document.getElementById('aisGain').value;
 
             // Check if using agent mode
@@ -561,7 +571,7 @@
                 fetch(`/controller/agents/${aisCurrentAgent}/ais/start`, {
                     method: 'POST',
                     headers: { 'Content-Type': 'application/json' },
-                    body: JSON.stringify({ device, gain, bias_t: getBiasTEnabled() })
+                    body: JSON.stringify({ device, gain, bias_t: getBiasTEnabled(), sdr_type: sdrType })
                 })
                 .then(r => r.json())
                 .then(result => {
@@ -586,7 +596,7 @@
             fetch('/ais/start', {
                 method: 'POST',
                 headers: { 'Content-Type': 'application/json' },
-                body: JSON.stringify({ device, gain, bias_t: getBiasTEnabled() })
+                body: JSON.stringify({ device, gain, bias_t: getBiasTEnabled(), sdr_type: sdrType })
             })
             .then(r => r.json())
             .then(data => {
@@ -1170,7 +1180,9 @@
         }
 
         function startDscTracking() {
-            const device = document.getElementById('dscDeviceSelect').value;
+            const dscSelect = document.getElementById('dscDeviceSelect');
+            const device = dscSelect.value;
+            const sdrType = (dscSelect.selectedOptions[0]?.dataset?.sdrType || 'rtlsdr').toLowerCase();
             const gain = document.getElementById('dscGain').value;
 
             // Check if using agent mode
@@ -1185,7 +1197,7 @@
             fetch(endpoint, {
                 method: 'POST',
                 headers: { 'Content-Type': 'application/json' },
-                body: JSON.stringify({ device, gain })
+                body: JSON.stringify({ device, gain, sdr_type: sdrType })
             })
             .then(r => r.json())
             .then(data => {
@@ -1617,21 +1629,32 @@
             const aisSelect = document.getElementById('aisDeviceSelect');
             const dscSelect = document.getElementById('dscDeviceSelect');
 
-            [aisSelect, dscSelect].forEach(select => {
+            const aisDevices = devices || [];
+            const dscDevices = aisDevices.filter(device => {
+                const sdrType = (device.sdr_type || device.type || 'rtlsdr').toLowerCase();
+                return sdrType === 'rtlsdr';
+            });
+
+            const fillSelect = (select, list, emptyLabel) => {
                 if (!select) return;
                 select.innerHTML = '';
-
+                if (list.length === 0) {
-                if (devices.length === 0) {
+                    select.innerHTML = `<option value=\"0\">${emptyLabel}</option>`;
-                    select.innerHTML = '<option value="0">No SDR found</option>';
+                    return;
-                } else {
-                    devices.forEach(device => {
-                        const opt = document.createElement('option');
-                        opt.value = device.index;
-                        opt.textContent = `Device ${device.index}: ${device.name || device.type || 'SDR'}`;
-                        select.appendChild(opt);
-                    });
                 }
-            });
+                list.forEach(device => {
+                    const opt = document.createElement('option');
+                    const sdrType = (device.sdr_type || device.type || 'rtlsdr').toLowerCase();
+                    const sdrLabel = sdrType.toUpperCase();
+                    opt.value = device.index;
+                    opt.dataset.sdrType = sdrType;
+                    opt.textContent = `Device ${device.index} (${sdrLabel}): ${device.name || device.type || 'SDR'}`;
+                    select.appendChild(opt);
+                });
+            };
+
+            fillSelect(aisSelect, aisDevices, 'No SDR found');
+            fillSelect(dscSelect, dscDevices, 'No RTL-SDR found');
         }
 
         // Override startTracking for agent support
@@ -1645,13 +1668,15 @@
                     return;
                 }
 
-                const device = document.getElementById('aisDeviceSelect').value;
+                const aisSelect = document.getElementById('aisDeviceSelect');
+                const device = aisSelect.value;
+                const sdrType = (aisSelect.selectedOptions[0]?.dataset?.sdrType || 'rtlsdr').toLowerCase();
                 const gain = document.getElementById('aisGain').value;
 
                 fetch(`/controller/agents/${aisCurrentAgent}/ais/start`, {
                     method: 'POST',
                     headers: { 'Content-Type': 'application/json' },
-                    body: JSON.stringify({ device, gain, bias_t: getBiasTEnabled() })
+                    body: JSON.stringify({ device, gain, bias_t: getBiasTEnabled(), sdr_type: sdrType })
                 })
                 .then(r => r.json())
                 .then(data => {

templates/partials/modes/dmr.html

@@ -21,13 +21,25 @@
                             <select id="dmrProtocol">
                                 <option value="auto" selected>Auto Detect</option>
                                 <option value="dmr">DMR</option>
-                                <option value="p25">P25</option>
+                                <option value="p25">P25 Phase 1</option>
+                                <option value="p25p2">P25 Phase 2</option>
                                 <option value="nxdn">NXDN</option>
                                 <option value="dstar">D-STAR</option>
                                 <option value="provoice">ProVoice</option>
                             </select>
                         </div>
 
+                        <div class="form-group">
+                            <label>Demodulation</label>
+                            <select id="dmrDemod">
+                                <option value="nfm" selected>NFM (recommended)</option>
+                                <option value="fm">FM (wide)</option>
+                            </select>
+                            <span style="font-size: 0.75em; color: var(--text-muted); display: block; margin-top: 2px;">
+                                Narrow FM often improves digital voice decode on 12.5 kHz channels.
+                            </span>
+                        </div>
+
                         <div class="form-group">
                             <label>Gain</label>
                             <input type="number" id="dmrGain" value="40" min="0" max="50" style="width: 100%;">
@@ -39,6 +51,18 @@
                                    title="Frequency error correction for your RTL-SDR dongle. Digital voice is very sensitive to frequency offset.">
                         </div>
 
+                        <div class="form-group">
+                            <label>Fine Tune (Hz)</label>
+                            <input type="number" id="dmrFineTune" value="0" min="-5000" max="5000" step="100" style="width: 100%;"
+                                   title="Offset the tuned frequency by a small amount without changing PPM.">
+                            <span style="font-size: 0.75em; color: var(--text-muted); display: block; margin-top: 2px;">
+                                Adjust in 100 Hz steps; small offsets can dramatically improve P25 decode.
+                            </span>
+                        </div>
+                        <button class="preset-btn" id="dmrFineTuneSweepBtn" onclick="sweepDmrFineTune()" style="width: 100%; margin-top: 6px;">
+                            Sweep Fine Tune
+                        </button>
+
                         <div class="form-group" style="margin-top: 4px;">
                             <label style="display: flex; align-items: center; gap: 8px; cursor: pointer;">
                                 <input type="checkbox" id="dmrRelaxCrc" style="width: auto; accent-color: var(--accent-cyan);">
@@ -87,21 +111,30 @@
                     </div>
 
                     <!-- Status -->
-                    <div class="section" style="margin-top: 12px;">
+                        <div class="section" style="margin-top: 12px;">
-                        <h3>Status</h3>
+                            <h3>Status</h3>
-                        <div style="background: rgba(0,0,0,0.3); border-radius: 6px; padding: 10px;">
+                            <div style="background: rgba(0,0,0,0.3); border-radius: 6px; padding: 10px;">
-                            <div style="display: flex; justify-content: space-between; align-items: center; margin-bottom: 6px;">
+                                <div style="display: flex; justify-content: space-between; align-items: center; margin-bottom: 6px;">
-                                <span style="font-size: 10px; color: var(--text-muted); text-transform: uppercase;">Status</span>
+                                    <span style="font-size: 10px; color: var(--text-muted); text-transform: uppercase;">Status</span>
-                                <span id="dmrStatus" style="font-size: 11px; color: var(--accent-cyan);">IDLE</span>
+                                    <span id="dmrStatus" style="font-size: 11px; color: var(--accent-cyan);">IDLE</span>
-                            </div>
+                                </div>
-                            <div style="display: flex; justify-content: space-between; align-items: center; margin-bottom: 6px;">
+                                <div style="display: flex; justify-content: space-between; align-items: center; margin-bottom: 6px;">
-                                <span style="font-size: 10px; color: var(--text-muted); text-transform: uppercase;">Protocol</span>
+                                    <span style="font-size: 10px; color: var(--text-muted); text-transform: uppercase;">Protocol</span>
-                                <span id="dmrActiveProtocol" style="font-size: 11px; color: var(--text-primary);">--</span>
+                                    <span id="dmrActiveProtocol" style="font-size: 11px; color: var(--text-primary);">--</span>
-                            </div>
+                                </div>
-                            <div style="display: flex; justify-content: space-between; align-items: center;">
+                                <div style="display: flex; justify-content: space-between; align-items: center;">
-                                <span style="font-size: 10px; color: var(--text-muted); text-transform: uppercase;">Calls</span>
+                                    <span style="font-size: 10px; color: var(--text-muted); text-transform: uppercase;">Calls</span>
-                                <span id="dmrCallCount" style="font-size: 14px; font-weight: bold; color: var(--accent-green);">0</span>
+                                    <span id="dmrCallCount" style="font-size: 14px; font-weight: bold; color: var(--accent-green);">0</span>
+                                </div>
+                                <div style="margin-top: 8px;">
+                                    <div style="display: flex; justify-content: space-between; align-items: center; margin-bottom: 4px;">
+                                        <span style="font-size: 10px; color: var(--text-muted); text-transform: uppercase;">Quality</span>
+                                        <span id="dmrQualityText" style="font-size: 11px; color: var(--text-primary);">--</span>
+                                    </div>
+                                    <div style="height: 6px; background: rgba(255,255,255,0.08); border-radius: 6px; overflow: hidden;">
+                                        <div id="dmrQualityBar" style="height: 100%; width: 0%; background: var(--text-muted); transition: width 0.2s ease;"></div>
+                                    </div>
+                                </div>
                             </div>
                         </div>
-                    </div>
                 </div>

tests/test_dmr.py

@@ -135,6 +135,7 @@ def test_dsd_fme_protocol_flags_known_values():
     assert _DSD_FME_PROTOCOL_FLAGS['auto'] == ['-ft']       # XDMA
     assert _DSD_FME_PROTOCOL_FLAGS['dmr'] == ['-fs']        # Simplex (-fd is D-STAR!)
     assert _DSD_FME_PROTOCOL_FLAGS['p25'] == ['-f1']        # NOT -fp (ProVoice in fme)
+    assert _DSD_FME_PROTOCOL_FLAGS['p25p2'] == ['-f2']      # Phase 2
     assert _DSD_FME_PROTOCOL_FLAGS['nxdn'] == ['-fn']
     assert _DSD_FME_PROTOCOL_FLAGS['dstar'] == ['-fd']      # -fd is D-STAR in dsd-fme
     assert _DSD_FME_PROTOCOL_FLAGS['provoice'] == ['-fp']   # NOT -fv
@@ -154,6 +155,7 @@ def test_dsd_fme_modulation_hints():
     """C4FM modulation hints should be set for C4FM protocols."""
     assert _DSD_FME_MODULATION['dmr'] == ['-mc']
     assert _DSD_FME_MODULATION['p25'] == ['-mc']
+    assert _DSD_FME_MODULATION['p25p2'] == ['-mq']
     assert _DSD_FME_MODULATION['nxdn'] == ['-mc']
     # D-Star and ProVoice should not have forced modulation
     assert 'dstar' not in _DSD_FME_MODULATION
@@ -235,3 +237,25 @@ def test_dmr_stream_mimetype(auth_client):
     """Stream should return event-stream content type."""
     resp = auth_client.get('/dmr/stream')
     assert resp.content_type.startswith('text/event-stream')
+def test_parse_frame_error_duid():
+    """Should parse DUID errors as frame_error."""
+    result = parse_dsd_output('P25p2 LCH 0  DUID ERR 11')
+    assert result is not None
+    assert result['type'] == 'frame_error'
+    assert result['kind'] == 'duid'
+
+
+def test_parse_frame_error_rs():
+    """Should parse Reed-Solomon errors as frame_error."""
+    result = parse_dsd_output('P25p2 SACCH  R-S ERR Sc')
+    assert result is not None
+    assert result['type'] == 'frame_error'
+    assert result['kind'] == 'rs'
+
+
+def test_parse_frame_ok_p25p2():
+    """Should parse P25p2 4V frames as OK."""
+    result = parse_dsd_output('P25p2 LCH 1  4V 1')
+    assert result is not None
+    assert result['type'] == 'frame_ok'
+    assert result['kind'] == 'p25p2'