# iridium-sniffer

> iridium-sniffer detects and demodulates Iridium L-band bursts from supported SDR devices or recorded IQ files. Its C pipeline emits iridium-toolkit RAW frames and can decode IDA and ACARS/SBD messages, with GSMTAP output for Wireshark analysis.

- Type: Tool
- Targets: Protocol
- Category: Protocol analysis tools
- Relationship: Foundation tool
- Sources reviewed: 2026-11-06
- Added to the catalog: 2026-11-09
- Original resource: <https://github.com/alphafox02/iridium-sniffer>
- Primary source: <https://github.com/alphafox02/iridium-sniffer/blob/830e34c957f0a52dedbb11ad726b85d8eef3221a/README.md>
- Catalog page: <https://awesomerea.org/resources/iridium-sniffer/>
- Record JSON: <https://awesomerea.org/resources/iridium-sniffer/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/iridium-sniffer/index.md)

## Requirements & limits

- **Prerequisites:** CMake, a C toolchain and FFTW3 are required for the core build; live capture needs a supported SDR and its library.
- **Prerequisites:** libacars-2 is optional for ARINC-622 payload decoding.
- **Limits:** Voice decoding requires the experimental ENABLE_VOICE build option.
- **License:** GPL-3.0 licence.

## Primary sources

1. <https://github.com/alphafox02/iridium-sniffer/blob/830e34c957f0a52dedbb11ad726b85d8eef3221a/README.md>
2. <https://github.com/alphafox02/iridium-sniffer/blob/830e34c957f0a52dedbb11ad726b85d8eef3221a/ARCHITECTURE.md>

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## About this entry

The description was reviewed against primary sources.
Original editorial content: MIT. Linked projects, papers and assets retain their own rights and licenses.