intercept/docs/USAGE.md

INTERCEPT Usage Guide

Detailed instructions for each mode.

Pager Mode

1. Select Hardware - Choose your SDR type (RTL-SDR, LimeSDR, or HackRF)
2. Select Device - Choose your SDR device from the dropdown
3. Set Frequency - Enter a frequency in MHz or use a preset
4. Choose Protocols - Select which protocols to decode (POCSAG/FLEX)
5. Adjust Settings - Set gain, squelch, and PPM correction as needed
6. Start Decoding - Click the green "Start Decoding" button

Frequency Presets

• Click a preset button to quickly set a frequency
• Add custom presets using the input field and "Add" button
• Right-click a preset to remove it
• Click "Reset to Defaults" to restore default frequencies

433MHz Sensor Mode

1. Select Hardware - Choose your SDR type
2. Select Device - Choose your SDR device
3. Start Decoding - Click "Start Decoding"
4. View Sensors - Decoded sensor data appears in real-time

Supports 200+ protocols including weather stations, TPMS, doorbells, and IoT devices.

WiFi Mode

1. Select Interface - Choose a WiFi adapter capable of monitor mode
2. Enable Monitor Mode - Click "Enable Monitor" (uncheck "Kill processes" to preserve other connections)
3. Start Scanning - Click "Start Scanning" to begin
4. View Networks - Networks appear in the output panel with signal strength
5. Track Devices - Click the chart icon on any network to track its signal over time
6. Capture Handshakes - Click "Capture" on a network to start handshake capture

Tips

• Run with sudo for monitor mode to work
• Check your adapter supports monitor mode: iw list | grep monitor
• Use "Kill processes" option if NetworkManager interferes

Bluetooth Mode

1. Select Interface - Choose your Bluetooth adapter
2. Choose Mode - Select scan mode (hcitool, bluetoothctl)
3. Start Scanning - Click "Start Scanning"
4. View Devices - Devices appear with name, address, and classification

Tracker Detection

INTERCEPT automatically detects known trackers:

• Apple AirTag
• Tile
• Samsung SmartTag
• Chipolo

Aircraft Mode (ADS-B)

1. Select Hardware - Choose your SDR type (RTL-SDR uses dump1090, others use readsb)
2. Check Tools - Ensure dump1090 or readsb is installed
3. Set Location - Choose location source:
   • Manual Entry - Type coordinates directly
   • Browser GPS - Use browser's built-in geolocation (requires HTTPS)
   • USB GPS Dongle - Connect a USB GPS receiver for continuous updates
4. Start Tracking - Click "Start Tracking" to begin ADS-B reception
5. View Map - Aircraft appear on the interactive Leaflet map
6. Click Aircraft - Click markers for detailed information
7. Display Options - Toggle callsigns, altitude, trails, range rings, clustering
8. Filter Aircraft - Use dropdown to show all, military, civil, or emergency only
9. Full Dashboard - Click "Full Screen Dashboard" for dedicated radar view

Emergency Squawks

The system highlights aircraft transmitting emergency squawks:

• 7500 - Hijack
• 7600 - Radio failure
• 7700 - General emergency

Satellite Mode

1. Set Location - Choose location source:
   • Manual Entry - Type coordinates directly
   • Browser GPS - Use browser's built-in geolocation
   • USB GPS Dongle - Connect a USB GPS receiver for continuous updates
2. Add Satellites - Click "Add Satellite" to enter TLE data or fetch from Celestrak
3. Calculate Passes - Click "Calculate Passes" to predict upcoming passes
4. View Sky Plot - Polar plot shows satellite positions in real-time
5. Ground Track - Map displays satellite orbit path and current position
6. Full Dashboard - Click "Full Screen Dashboard" for dedicated satellite view

Adding Satellites from Celestrak

1. Click "Add Satellite"
2. Select "Fetch from Celestrak"
3. Choose a category (Amateur, Weather, ISS, Starlink, etc.)
4. Select satellites to add

Configuration

INTERCEPT can be configured via environment variables:

Variable	Default	Description
INTERCEPT_HOST	0.0.0.0	Server bind address
INTERCEPT_PORT	5050	Server port
INTERCEPT_DEBUG	false	Enable debug mode
INTERCEPT_LOG_LEVEL	WARNING	Log level (DEBUG, INFO, WARNING, ERROR)
INTERCEPT_DEFAULT_GAIN	40	Default RTL-SDR gain

Example: INTERCEPT_PORT=8080 sudo -E venv/bin/python intercept.py

Command-line Options

python3 intercept.py --help

  -p, --port PORT    Port to run server on (default: 5050)
  -H, --host HOST    Host to bind to (default: 0.0.0.0)
  -d, --debug        Enable debug mode
  --check-deps       Check dependencies and exit