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James Smith 62e53c5dfa fix(adsb): fix aircraft photo display and add Drone Intelligence docs 
- Fix stale DOM refs in fetchAircraftPhoto: elements were captured before
  await fetch(), but showAircraftDetails rebuilds innerHTML on every RAF
  update, leaving the async path writing to detached nodes. Now re-queries
  the DOM after await, and the cache (synchronous) path queries inline so
  refs are always fresh.
- Add thumbnail fallback in aircraft_photo route: fall back to thumbnail
  when thumbnail_large.src is absent rather than returning null.
- Add Drone Intelligence to nav, help modal, cheat sheets, README, and docs.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-05-05 09:24:30 +01:00

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INTERCEPT Features

Complete feature list for all modules.

Pager Decoding

  • Real-time decoding of POCSAG (512/1200/2400) and FLEX protocols
  • Customizable frequency presets stored in browser
  • Auto-restart on frequency change while decoding

433MHz Sensor Decoding

  • 200+ device protocols supported via rtl_433
  • Weather stations - temperature, humidity, wind, rain
  • TPMS - Tire pressure monitoring sensors
  • Doorbells, remotes, and IoT devices
  • Smart meters and utility monitors

Sub-GHz Analyzer

  • HackRF-based signal capture and analysis for 300-928 MHz ISM bands
  • Protocol decoding - identify and decode common Sub-GHz protocols
  • Signal replay/transmit capabilities for authorized testing
  • Wideband spectrum analysis with real-time visualization
  • I/Q capture - record raw samples for offline analysis

Spy Stations (Number Stations)

  • Comprehensive database of active number stations and diplomatic networks
  • Station profiles - frequencies, schedules, operators, descriptions
  • Filter by type - number stations vs diplomatic networks
  • Filter by country - Russia, Cuba, Israel, Poland, North Korea, etc.
  • Filter by mode - USB, AM, CW, OFDM
  • Tune integration - click to tune Listening Post to station frequency
  • Source links - references to priyom.org for detailed information
  • Famous stations - UVB-76 "The Buzzer", Cuban HM01, Israeli E17z

ADS-B Aircraft Tracking

  • Real-time aircraft tracking via dump1090 or rtl_adsb
  • Full-screen dashboard - dedicated popout with virtual radar scope
  • Interactive Leaflet map with OpenStreetMap tiles (dark-themed)
  • Aircraft trails - optional flight path history visualization
  • Range rings - distance reference circles from observer position
  • Aircraft filtering - show all, military only, civil only, or emergency only
  • Marker clustering - group nearby aircraft at lower zoom levels
  • Reception statistics - max range, message rate, busiest hour, total seen
  • Persistent ADS-B history - optional Postgres-backed message and snapshot storage
  • History reporting dashboard - session controls, aircraft timelines, and detail modal
  • Observer location - manual input or GPS geolocation
  • Audio alerts - notifications for military and emergency aircraft
  • Emergency squawk highlighting - visual alerts for 7500/7600/7700
  • Aircraft details popup - callsign, altitude, speed, heading, squawk, ICAO

Screenshot

AIS Vessel Tracking

  • Real-time vessel tracking via AIS-catcher or rtl_ais
  • Full-screen dashboard - dedicated popout with maritime map
  • Interactive Leaflet map with OpenStreetMap tiles (dark-themed)
  • Vessel trails - optional track history visualization
  • Vessel details popup - name, MMSI, callsign, destination, ship type, speed, heading
  • Country identification - flag lookup via Maritime Identification Digits (MID)

VHF DSC Channel 70 Monitoring

Digital Selective Calling (DSC) monitoring on the international maritime distress frequency.

  • Real-time DSC decoding - Distress, Urgency, Safety, and Routine messages
  • MMSI country lookup - 180+ Maritime Identification Digit codes
  • Distress nature identification - Fire, Flooding, Collision, Sinking, Piracy, MOB, etc.
  • Position extraction - Automatic lat/lon parsing from distress messages
  • Map markers - Distress positions plotted with pulsing alert markers
  • Visual alert overlay - Prominent popup for DISTRESS and URGENCY messages
  • Audio alerts - Notification sound for critical messages
  • Alert persistence - Critical alerts stored permanently in database
  • Acknowledgement workflow - Track response status with notes
  • SDR conflict detection - Prevents device collisions with AIS tracking
  • Alert summary - Dashboard counts for unacknowledged distress/urgency

ACARS Messaging

  • Real-time ACARS decoding via acarsdec
  • Aircraft datalink messages - operational, weather, and position reports
  • Multi-SDR support - RTL-SDR, HackRF, LimeSDR, Airspy, SDRplay
  • Message filtering - filter by message type, flight, or registration

VDL2 (VHF Data Link Mode 2)

  • Real-time VDL2 decoding via dumpvdl2 on standard VDL2 frequencies
  • ACARS-over-AVLC message capture with full frame parsing
  • Signal analysis - frequency, signal level, noise level, SNR, burst length
  • AVLC frame details - source/destination addresses, frame type, command/response
  • Raw JSON inspection - expandable raw message data for each frame
  • Multi-frequency monitoring - simultaneous reception on multiple VDL2 channels
  • Multi-SDR support - RTL-SDR, HackRF, LimeSDR, Airspy, SDRplay
  • CSV/JSON export - export captured messages for offline analysis
  • Integrated with ADS-B dashboard - VDL2 messages linked to aircraft tracking

CW/Morse Code Decoder

  • Custom Goertzel tone detection for CW (continuous wave) Morse decoding
  • OOK/AM envelope detection mode for on-off keying signals in ISM bands
  • HF frequency presets for amateur CW bands (160m-10m)
  • ISM band presets for OOK envelope mode (315 MHz, 433 MHz, 868 MHz, 915 MHz)
  • Real-time character and word output with WPM estimation
  • Multi-SDR support - RTL-SDR, HackRF, LimeSDR, Airspy, SDRplay

WeFax (Weather Fax)

  • HF weather fax reception from marine and meteorological broadcast stations
  • Broadcast timeline with scheduled transmission times by station
  • Auto-scheduler for unattended capture of scheduled broadcasts
  • Image gallery with timestamped decoded weather charts
  • Station presets for major WeFax broadcasters worldwide
  • Multi-SDR support - RTL-SDR, HackRF, LimeSDR, Airspy, SDRplay

Listening Post

  • Wideband frequency scanning via rtl_power sweep with SNR filtering
  • Real-time audio monitoring with FM and SSB demodulation
  • Cross-module frequency routing from scanner to decoders
  • Waterfall spectrum display for visual signal identification
  • Customizable frequency presets and band bookmarks
  • Multi-SDR support - RTL-SDR, LimeSDR, HackRF, Airspy, SDRplay

Weather Satellites

  • NOAA APT and Meteor LRPT image decoding via SatDump
  • Auto-scheduler with pass prediction and automatic capture
  • Polar plot - real-time satellite position on azimuth/elevation display
  • Ground track map - orbit path with past/future trajectory
  • Image gallery with timestamped decoded imagery

WebSDR

  • KiwiSDR network integration for remote HF/shortwave listening
  • WebSocket audio streaming from remote receivers
  • Receiver discovery with automatic caching
  • Frequency tuning with band presets

ISS SSTV

  • ISS SSTV image reception on 145.800 MHz FM during special event transmissions
  • Real-time ISS tracking with world map and pass predictions
  • Doppler correction - optional lat/lon input for real-time frequency shift compensation
  • Next pass countdown - time remaining until ISS is overhead
  • Image gallery with timestamped decoded imagery
  • TLE updates - fetch latest ISS orbital elements
  • Multi-SDR support - RTL-SDR, HackRF, LimeSDR, Airspy, SDRplay

HF SSTV

  • Terrestrial SSTV decoding across HF (80m-10m), VHF (6m, 2m), and UHF (70cm) bands
  • Predefined frequency lookup for 13 active SSTV calling frequencies
  • Auto-modulation selection - frequency table maps to correct mode (USB, LSB, FM)
  • Image gallery with decoded transmissions
  • Common modes supported - PD120, PD180, Martin1, Scottie1, Robot36

APRS

  • Amateur packet radio position reports and telemetry via direwolf
  • Region-specific frequencies - 144.390 MHz (North America), 144.800 MHz (Europe), and more
  • Real-time position tracking on interactive map
  • Message and telemetry display from APRS network

Utility Meter Reading

  • Smart meter monitoring via rtl_amr for electric, gas, and water meters
  • Real-time JSON output with meter ID, consumption, and signal data
  • Multiple meter protocol support via rtl_tcp integration

Space Weather

  • Real-time solar indices - Solar Flux Index (SFI), Kp index, A-index, sunspot number
  • NOAA Space Weather Scales - Geomagnetic storms (G), solar radiation (S), radio blackouts (R)
  • HF band conditions - Day/night propagation from HamQSL for 80m through 10m bands
  • Solar wind monitoring - Speed, density, and IMF Bz from DSCOVR satellite
  • X-ray flux chart - GOES X-ray data with flare class scale (A/B/C/M/X)
  • Flare probability - 1-day and 3-day C/M/X-class flare forecasts
  • Solar imagery - NASA SDO 193A, 304A, and magnetogram images
  • D-RAP absorption maps - HF radio absorption at 5-30 MHz frequency bands
  • Aurora forecast - OVATION aurora oval visualization
  • SWPC alerts - Real-time space weather alerts and warnings
  • Active solar regions - Current sunspot region data with location and area
  • Auto-refresh - 5-minute polling with manual refresh option
  • No SDR required - Data fetched from NOAA SWPC, NASA SDO, and HamQSL public APIs

Radiosonde Weather Balloon Tracking

  • 400-406 MHz reception via radiosonde_auto_rx for weather balloon telemetry
  • Frequency presets for common radiosonde bands
  • Real-time telemetry - altitude, temperature, humidity, pressure, GPS position
  • Interactive map with balloon trajectory and burst point prediction
  • Station location with configurable observer position
  • Distance tracking - real-time distance-to-balloon calculation
  • Multi-SDR support - RTL-SDR, HackRF, LimeSDR, Airspy, SDRplay

Satellite Tracking

  • Full-screen dashboard - dedicated popout with polar plot and ground track
  • Polar sky plot - real-time satellite positions on azimuth/elevation display
  • Ground track map - satellite orbit path with past/future trajectory
  • Pass prediction for satellites using TLE data
  • Add satellites via manual TLE entry or Celestrak import
  • Celestrak integration - fetch by category (Amateur, Weather, ISS, Starlink, etc.)
  • Next pass countdown - time remaining, visibility duration, max elevation
  • Telemetry panel - real-time azimuth, elevation, range, velocity
  • Multiple satellite tracking simultaneously

Screenshot

Screenshot

WiFi Reconnaissance

  • Monitor mode management via airmon-ng
  • Network scanning with airodump-ng and channel hopping
  • Handshake capture with real-time status and auto-detection
  • Deauthentication attacks for authorized testing
  • Channel utilization visualization (2.4GHz and 5GHz)
  • Security overview chart and real-time radar display
  • Client vendor lookup via OUI database
  • Drone detection - automatic detection via SSID patterns and OUI (DJI, Parrot, Autel, etc.)
  • Rogue AP detection - alerts for same SSID on multiple BSSIDs
  • Signal history graph - track signal strength over time for any device
  • Network topology - visual map of APs and connected clients
  • Channel recommendation - optimal channel suggestions based on congestion
  • Hidden SSID revealer - captures hidden networks from probe requests
  • Client probe analysis - privacy leak detection from probe requests
  • Device correlation - matches WiFi and Bluetooth devices by manufacturer

Bluetooth Scanning

  • BLE and Classic Bluetooth device scanning
  • Multiple scan modes - hcitool, bluetoothctl, bleak
  • Tracker detection - AirTag, Tile, Samsung SmartTag, Chipolo
  • Device classification - phones, audio, wearables, computers
  • Manufacturer lookup via OUI database and Bluetooth Company IDs
  • Proximity radar visualization
  • Device type breakdown chart

BT Locate (SAR Bluetooth Device Location)

Search and rescue Bluetooth device location with GPS-tagged signal trail mapping.

Core Features

  • Target tracking - Locate devices by MAC address, name pattern, or IRK (Identity Resolving Key)
  • RPA resolution - Resolve BLE Resolvable Private Addresses using IRK for tracking devices with randomized addresses
  • IRK auto-detection - Extract IRKs from paired devices on macOS and Linux
  • GPS-tagged signal trail - Every detection is tagged with GPS coordinates for trail mapping
  • Proximity bands - IMMEDIATE (<1m), NEAR (1-5m), FAR (>5m) with color-coded HUD
  • RSSI history chart - Real-time signal strength sparkline for trend analysis
  • Distance estimation - Log-distance path loss model with environment presets
  • Audio proximity alerts - Web Audio API tones that increase in pitch as signal strengthens
  • Hand-off from Bluetooth mode - One-click transfer of a device from BT scanner to BT Locate

Environment Presets

  • Open Field (n=2.0) - Free space path loss
  • Outdoor (n=2.2) - Typical outdoor environment
  • Indoor (n=3.0) - Indoor with walls and obstacles

Map & Trail

  • Interactive Leaflet map with GPS trail visualization
  • Trail points color-coded by proximity band
  • Polyline connecting detection points for path visualization
  • Supports user-configured tile providers

Requirements

  • Bluetooth adapter (built-in or USB)
  • GPS receiver (optional, falls back to manual coordinates)

WiFi Locate

Locate a WiFi access point by BSSID using real-time signal strength tracking.

Core Features

  • Target by BSSID - Enter any MAC address or hand off from the WiFi scanner
  • Real-time signal meter - Large dBm display with color-coded strength (good/medium/weak)
  • 20-segment signal bar - Visual proximity indicator with red/yellow/green segments
  • RSSI history chart - Canvas sparkline showing signal trend over time
  • Distance estimation - Log-distance path loss model with configurable environment presets
  • Audio proximity alerts - Web Audio API tones that increase in pitch and frequency as signal strengthens
  • Signal lost detection - 30-second timeout with visual overlay when target disappears
  • Hand-off from WiFi mode - One-click transfer from WiFi detail drawer to WiFi Locate
  • Stats tracking - Current, min, max, and average RSSI across session

Environment Presets

  • Open Field (n=2.0) - Free space path loss
  • Outdoor (n=2.8) - Typical outdoor environment (default)
  • Indoor (n=3.5) - Indoor with walls and obstacles

Mode Transition

  • WiFi scan is preserved when switching between WiFi and WiFi Locate modes
  • Deep scan auto-starts if not already running

Requirements

  • WiFi adapter capable of monitor mode
  • aircrack-ng suite for deep scanning

GPS Mode

Real-time GPS position tracking with live map visualization.

Features

  • Live position tracking - Real-time latitude, longitude, altitude display
  • Interactive map - Current position on Leaflet map with track history
  • Speed and heading - Real-time speed (km/h) and compass heading
  • Satellite info - Number of satellites in view and fix quality
  • Track recording - Record GPS tracks with export capability
  • Accuracy display - Horizontal and vertical position accuracy (EPX/EPY)

Requirements

  • USB GPS receiver connected via gpsd
  • gpsd daemon running (sudo gpsd /dev/ttyUSB0 -F /var/run/gpsd.sock)

TSCM Counter-Surveillance Mode

Technical Surveillance Countermeasures (TSCM) screening for detecting wireless surveillance indicators.

Wireless Sweep Features

  • BLE scanning with manufacturer data detection (AirTags, Tile, SmartTags, ESP32)
  • WiFi scanning for rogue APs, hidden SSIDs, camera devices
  • RF spectrum analysis (RTL-SDR or HackRF) - FM bugs, ISM bands, video transmitters
  • Cross-protocol correlation - links devices across BLE/WiFi/RF
  • Baseline comparison - detect new/unknown devices vs known environment

MAC-Randomization Resistant Detection

  • Device fingerprinting based on advertisement payloads, not MAC addresses
  • Behavioral clustering - groups observations into probable physical devices
  • Session tracking - monitors device presence windows
  • Timing pattern analysis - detects characteristic advertising intervals
  • RSSI trajectory correlation - identifies co-located devices

Risk Assessment

  • Three-tier scoring model:
    • Informational (0-2): Known or expected devices
    • Needs Review (3-5): Unusual devices requiring assessment
    • High Interest (6+): Multiple indicators warrant investigation
  • Risk indicators: Stable RSSI, audio-capable, ESP32 chipsets, hidden identity, MAC rotation
  • Audit trail - full evidence chain for each link/flag
  • Client-safe disclaimers - findings are indicators, not confirmed surveillance

Limitations (Documented)

  • Cannot detect non-transmitting devices
  • False positives/negatives expected
  • Results require professional verification
  • No cryptographic de-randomization
  • Passive screening only (no active probing by default)

Drone Intelligence

Multi-vector UAV detection and identification system combining three complementary detection methods into unified contact tracking.

Detection Vectors

  • Remote ID (WiFi/BLE) — Parses ASTM F3411-22a broadcast frames from WiFi Beacon and BLE Advertisement packets. Extracts drone ID, operator ID, drone type, GPS position, altitude, speed, and emergency status. Mandatory for all drones >250g in the US/EU since 2023.
  • RTL-SDR RF (433/868 MHz) — Monitors ISM bands for control link and telemetry signals characteristic of consumer and FPV drones. Detects DJI OcuSync, FrSky, FlySky, and generic FSK/GFSK drone control protocols.
  • HackRF (2.4/5.8 GHz) — Wide-scan of video downlink and telemetry bands used by most consumer drones. Detects power above noise floor across 2.400–2.483 GHz and 5.725–5.875 GHz ISM bands.

Contact Correlation

The DroneCorrelator merges raw observations from all three vectors into unified DroneContact objects:

  • TTL-based store — contacts expire after 120 seconds of no activity
  • Multi-vector fusion — a single contact can be seen on 1–3 vectors simultaneously
  • Deduplication — observations from the same vector within 5 seconds are collapsed

Risk Scoring

Level Criteria
High No Remote ID broadcast (non-compliant) or ASTM non-conformant frame
Medium Multiple detection vectors active, or RSSI delta >15 dB between vectors
Low Compliant Remote ID present, single detection vector

Live Map

Remote ID contacts with GPS position data are plotted on a Leaflet map. Markers show drone ID and last known coordinates. Map updates in real time via SSE.

Requirements

  • WiFi adapter capable of monitor mode (for BLE/WiFi Remote ID)
  • RTL-SDR dongle (for 433/868 MHz RF detection)
  • HackRF One (optional, for 2.4/5.8 GHz detection)
  • Python package: opendroneid>=1.0

Meshtastic Mesh Networks

Integration with Meshtastic LoRa mesh networking devices for decentralized communication.

Device Support

  • Heltec - LoRa32 series
  • T-Beam - TTGO T-Beam with GPS
  • RAK - WisBlock series
  • Any Meshtastic-compatible device via USB/Serial

Features

  • Real-time messaging - Stream messages as they arrive
  • Channel configuration - Set encryption keys and channel names
  • Node information - View connected nodes with signal metrics
  • Message history - Up to 500 messages retained
  • Signal quality - RSSI and SNR for each message
  • Hop tracking - See message hop count

Requirements

  • Physical Meshtastic device connected via USB
  • Meshtastic Python SDK (pip install meshtastic)

Ubertooth One BLE Scanning

Advanced Bluetooth Low Energy scanning using Ubertooth One hardware.

Capabilities

  • 40-channel scanning - Capture BLE advertisements across all channels
  • Raw payload access - Full advertising data for analysis
  • Passive sniffing - No active scanning required
  • MAC address extraction - Public and random address types
  • RSSI measurement - Signal strength for proximity estimation

Integration

  • Works alongside standard BlueZ/DBus Bluetooth scanning
  • Automatically detected when ubertooth-btle is available
  • Falls back to standard adapter if Ubertooth not present

Requirements

  • Ubertooth One hardware
  • ubertooth-btle command-line tool installed
  • libubertooth library

Remote Agents (Distributed SIGINT)

Deploy lightweight sensor nodes across multiple locations and aggregate data to a central controller.

Architecture

  • Hub-and-spoke model - Central controller with multiple remote agents
  • Push and Pull modes - Agents can push data automatically or respond to on-demand requests
  • API key authentication - Secure communication between agents and controller

Agent Features

  • Standalone deployment - Run on Raspberry Pi, mini PCs, or any Linux device with SDR
  • All modes supported - Pager, sensor, ADS-B, AIS, WiFi, Bluetooth, and more
  • GPS integration - Automatic location tagging from USB GPS receivers
  • Multi-SDR support - Run multiple modes simultaneously on agents with multiple SDRs
  • Capability discovery - Controller auto-detects available modes and devices

Controller Features

  • Agent management UI - Register, test, and remove agents from /controller/manage
  • Real-time status - Health monitoring with online/offline indicators
  • Unified data stream - Aggregate data from all agents via SSE
  • Dashboard integration - Agent selector in ADS-B, AIS, and main dashboards
  • Device conflict detection - Smart warnings when SDR is in use

Use Cases

  • Wide-area monitoring - Cover larger geographic areas with distributed sensors
  • Remote installations - Deploy sensors in locations without direct access
  • Redundancy - Multiple nodes for reliable coverage
  • Triangulation - Use multiple GPS-enabled agents for signal location

System Health

  • Telemetry dashboard with real-time system metrics
  • Process monitoring for all running SDR tools and decoders
  • CPU, memory, and disk usage tracking
  • SDR device status overview
  • No SDR required - monitors system health independently

User Interface

  • Mode-specific header stats - real-time badges showing key metrics per mode
  • UTC clock - always visible in header for time-critical operations
  • SSE connection status indicator - real-time connection state with SSEManager and exponential backoff reconnection
  • Accessibility - aria-labels, form label associations, keyboard list navigation, and destructive action confirmation modals
  • Active mode indicator - shows current mode with pulse animation
  • Collapsible sections - click any header to collapse/expand
  • Panel styling - gradient backgrounds with indicator dots
  • Tabbed mode selector with icons (grouped by SDR/RF and Wireless)
  • Consistent design - unified styling across main dashboard and popouts
  • Dark/Light theme toggle - click moon/sun icon in header, preference saved
  • Browser notifications - desktop alerts for critical events (drones, rogue APs, handshakes)
  • Built-in help page - accessible via ? button or F1 key

Keyboard Shortcuts

Key Action
F1 Open help
? Open help (when not typing)
Escape Close help/modals

Offline Mode

Run iNTERCEPT without internet connectivity by using bundled local assets.

Bundled Assets

  • Leaflet 1.9.4 - Map library with marker images
  • Chart.js 4.4.1 - Signal strength graphs
  • Inter font - Primary UI font (400, 500, 600, 700 weights)
  • JetBrains Mono font - Monospace/code font (400, 500, 600, 700 weights)

Settings Modal

Access via the gear icon in the navigation bar:

  • Offline Tab - Toggle offline mode, configure asset sources (CDN vs local)
  • Display Tab - Theme and animation preferences
  • About Tab - Version info and links

Map Tile Providers

Choose from multiple tile sources for maps:

  • OpenStreetMap - Default, general purpose
  • CartoDB Dark - Dark themed, matches UI
  • CartoDB Positron - Light themed
  • ESRI World Imagery - Satellite imagery
  • Custom URL - Connect to your own tile server (e.g., local OpenStreetMap tile cache)

Local Asset Status

The settings modal shows availability status for each bundled asset:

  • Green "Available" badge when asset is present
  • Red "Missing" badge when asset is not found
  • Click "Check Assets" to refresh status

Use Cases

  • Air-gapped environments - Run on isolated networks
  • Field deployments - Operate without reliable internet
  • Local tile servers - Use pre-cached map tiles for specific regions
  • Reduced latency - Faster loading with local assets

General

  • Web-based interface - no desktop app needed
  • Production server - gunicorn + gevent via start.sh for concurrent SSE/WebSocket handling (falls back to Flask dev server)
  • Live message streaming via Server-Sent Events (SSE)
  • Audio alerts with mute toggle
  • Message export to CSV/JSON
  • Signal activity meter and waterfall display
  • Message logging to file with timestamps
  • HTTPS support via INTERCEPT_HTTPS configuration for secure deployments
  • Voice alerts for configurable event notifications across modes
  • Multi-SDR hardware support - RTL-SDR, LimeSDR, HackRF, Airspy, SDRplay
  • Automatic device detection across all supported hardware
  • Hardware-specific validation - frequency/gain ranges per device type
  • Tool path overrides via INTERCEPT_*_PATH environment variables
  • Native Homebrew detection for Apple Silicon tool paths
  • Configurable gain and PPM correction
  • Device intelligence dashboard with tracking
  • GPS dongle support - USB GPS receivers for precise observer location
  • Disclaimer acceptance on first use
  • Auto-stop when switching between modes
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