iNTERCEPT is an open-source, web-based platform designed to provide a unified interface for software-defined radio (SDR) operations. Developed by smittix, the platform consolidates a wide array of signal intelligence (SIGINT) capabilities into a single dashboard accessible via a web browser. By simplifying the management of various radio tools, it allows users to monitor, decode, and visualize signals across numerous protocols ranging from legacy pager systems to modern satellite telemetry. The platform is designed to be accessible, supporting affordable hardware like the RTL-SDR, while also providing hooks for more advanced hardware such as HackRF and LimeSDR through SoapySDR. It offers a structured way to handle complex RF data, making it suitable for both enthusiasts and researchers interested in monitoring the radio spectrum.

The functionality of iNTERCEPT revolves around orchestrating specialized backend tools to provide real-time data analysis and visualization. It acts as a central hub for decoding, tracking, and scanning, handling the heavy lifting of signal processing in the background and presenting the results in an interactive web interface. Users can deploy the software in a variety of configurations, ranging from localized setups to distributed networks using remote sensor agents, which allows for broader signal coverage and data aggregation.

Some of the key features are:

• Pager Decoding: Supports monitoring of POCSAG and FLEX pager messages using rtl_fm and multimon-ng.
• 433MHz Sensors: Decodes over 200 protocols for smart home, TPMS, and IoT sensors via rtl_433.
• Aircraft Tracking: Provides real-time ADS-B, ACARS, and VDL2 message decoding with interactive maps and range visualization.
• Maritime Tracking: Integrates AIS ship tracking for monitoring maritime traffic, speeds, and vessel details.
• Satellite Monitoring: Decodes weather satellite images, tracks satellites with TLE data, and receives ISS SSTV transmissions.
• WiFi/Bluetooth Scanning: Includes reconnaissance capabilities for network discovery, device tracking, and signal localization.
• Drone Intelligence: Offers multi-vector UAV detection using Remote ID protocols and RF fingerprinting.
• TSCM/Counter-Surveillance: Provides baseline recording and risk scoring tools for detecting potentially unauthorized devices.

Operation of the platform is facilitated through a menu-driven setup process, with support for different profiles like maritime, security, or full SIGINT. Users can deploy the system natively on Debian or Ubuntu distributions or via a Docker container, making it flexible for different environments. Once active, the platform presents a dashboard where users can interact with various modules, view maps, and analyze signal telemetry in real time. It also features support for distributed sensor nodes, allowing users to deploy remote agents across different physical locations and manage them from a centralized console.

Some common use cases include:

• Radio Monitoring: Tracking emergency services, amateur radio packet data, and shortwave frequency broadcasts.
• Environmental Sensing: Monitoring weather balloons, local IoT sensor data, and solar/geomagnetic conditions.
• Security Auditing: Performing reconnaissance on WiFi and Bluetooth networks to identify nearby devices and potential vulnerabilities.
• Aerospace Observation: Tracking commercial aircraft movements and receiving imagery from orbiting weather satellites.
• Maritime Oversight: Managing local vessel traffic and identifying ships based on AIS broadcasts.