multimon-ng is a command-line decoder for digital radio and signalling modes. It works with recorded samples as well as live audio streams, making it particularly useful as one component in an SDR pipeline where another utility performs the radio tuning and demodulation.
The software grew out of the original multimon project and covers paging, selective calling, telemetry and other signalling systems. Its text-oriented interface also makes it easy to incorporate into logging, monitoring and automated processing systems.
This is free and open source software.
Key Features
- Decodes numerous digital radio and signalling modes.
- Extensive POCSAG paging support with automatic polarity detection.
- Provides BCH error correction and multiple POCSAG character sets.
- FLEX paging decoder supports fragmented and group messages.
- Improved FLEX processing includes message reassembly, validation and timestamps.
- Supports GSC paging with error correction, automatic polarity and batch messages.
- Decodes EAS, AFSK, FSK, DTMF and several selective-calling systems.
- Includes Morse CW decoding.
- Structured JSON output is available for supported decoders.
- Reads recorded sample and audio files.
- Accepts standard input for live command-line processing pipelines.
- Works with tools such as rtl_fm and SoX to process live SDR reception.
- Automatic input-format detection reduces manual configuration.
- Can generate FLEX and POCSAG signals as well as decode them.
- Optional oscilloscope display provides a visual view of incoming data.
- Suitable for scripts and monitoring systems that need machine-readable decoder output.
Website: github.com/EliasOenal/multimon-ng
Support:
Developer: Elias Önal
License: GNU General Public License v2.0
multimon-ng is written in C. Learn C with our recommended free books and free tutorials.
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