INTERCEPT

Signal Intelligence Platform
A web-based interface for software-defined radio tools.

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Features

• Pager Decoding - POCSAG/FLEX via rtl_fm + multimon-ng
• 433MHz Sensors - Weather stations, TPMS, IoT devices via rtl_433
• Aircraft Tracking - ADS-B via dump1090 with real-time map and radar
• Listening Post - Frequency scanner with audio monitoring
• Satellite Tracking - Pass prediction using TLE data
• WiFi Scanning - Monitor mode reconnaissance via aircrack-ng
• Bluetooth Scanning - Device discovery and tracker detection

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Installation

macOS

1. Install Homebrew (if not already installed):

/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"

2. Install dependencies:

# Required
brew install python@3.11 librtlsdr multimon-ng rtl_433 ffmpeg

# For ADS-B aircraft tracking
brew install dump1090-mutability

# For WiFi scanning (optional)
brew install aircrack-ng

3. Clone and run:

git clone https://github.com/smittix/intercept.git
cd intercept
./setup.sh
sudo python3 intercept.py

Debian / Ubuntu / Raspberry Pi OS

1. Install dependencies:

sudo apt update
sudo apt install -y python3 python3-pip python3-venv git

# Required SDR tools
sudo apt install -y rtl-sdr multimon-ng rtl-433 ffmpeg

# For ADS-B aircraft tracking (package name varies)
sudo apt install -y dump1090-mutability  # or dump1090-fa

# For WiFi scanning (optional)
sudo apt install -y aircrack-ng

# For Bluetooth scanning (optional)
sudo apt install -y bluez bluetooth

2. Clone and run:

git clone https://github.com/smittix/intercept.git
cd intercept
./setup.sh
sudo python3 intercept.py

Note: On Raspberry Pi or headless systems, you may need to run sudo venv/bin/python intercept.py if a virtual environment was created.

Docker (Alternative)

git clone https://github.com/smittix/intercept.git
cd intercept
docker-compose up -d

Note: Docker requires privileged mode for USB SDR access. See docker-compose.yml for configuration options.

Open the Interface

After starting, open http://localhost:5050 in your browser.

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Hardware Requirements

Hardware	Purpose	Price
RTL-SDR	Required for all SDR features	~$25-35
WiFi adapter	Monitor mode scanning (optional)	~$20-40
Bluetooth adapter	Device scanning (usually built-in)	-

Most features work with a basic RTL-SDR dongle (RTL2832U + R820T2).

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Troubleshooting

RTL-SDR not detected (Linux)

Add udev rules:

sudo bash -c 'cat > /etc/udev/rules.d/20-rtlsdr.rules << EOF
SUBSYSTEM=="usb", ATTRS{idVendor}=="0bda", ATTRS{idProduct}=="2838", MODE="0666"
SUBSYSTEM=="usb", ATTRS{idVendor}=="0bda", ATTRS{idProduct}=="2832", MODE="0666"
EOF'
sudo udevadm control --reload-rules && sudo udevadm trigger

Then unplug and replug your RTL-SDR.

"externally-managed-environment" error (Ubuntu 23.04+)

The setup script handles this automatically by creating a virtual environment. Run:

./setup.sh
source venv/bin/activate
sudo venv/bin/python intercept.py

dump1090 not available (Debian Trixie)

On newer Debian versions, dump1090 may not be in repositories. Install from FlightAware:

• https://flightaware.com/adsb/piaware/install

Verify installation

python3 intercept.py --check-deps

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Community

Join our Discord

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Documentation

• Usage Guide - Detailed instructions for each mode
• Hardware Guide - SDR hardware and advanced setup
• Troubleshooting - Common issues and solutions

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Disclaimer

This software is for educational and authorized testing purposes only.

• Only use with proper authorization
• Intercepting communications without consent may be illegal
• You are responsible for compliance with applicable laws

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License

MIT License - see LICENSE

Author

Created by smittix - GitHub

Acknowledgments

rtl-sdr | multimon-ng | rtl_433 | dump1090 | aircrack-ng | Leaflet.js | Celestrak