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M17 radio (and radio-over-IP) protocol implementation.

Project description

Python package for M17 radio and radio-over-IP protocols

M17 is a new, experimental radio protocol similar to DMR/MotoTRBO, P25, D-STAR, and others. It uses the Codec2 vocoder by David Rowe.

See M17 Project for more details.

This code will be pushed up to the M17 project's newly created Github eventually. As for now, it's all by yours truly.

Build Status

This package has full Python support for handling M17 addresses, framing and parsing, and including a full Python native VoIP client (for developers).



  • python -m m17.address <callsign> - print the encoded M17 base40 representation of the callsigns given
  • see and in the source for M17 frame classes and example usage.


  • python -m m17.audio_test 3200 where 3200 can also be 1600, 1200, or other supported Codec2 bitrate. Takes your microphone, encodes and decodes it into Codec2, and plays it back. Useful for getting your microphone input tuned properly for Codec2.



You can install with pip install m17, and get a basic feature set including framing and M17 address translation.

However, to get all features that use Codec2, including the full M17 VoIP node and audio_test, you must first have Codec2 installed on your system, including the Codec2 development headers, and Cython. Once that's complete, you can then pip install m17[Codec2] to install all features.

Note that installing Cython separately before pycodec2 seems to be required in order to make sure it's available for pycodec2's setup process.

Here's an example for Arch Linux.

pacman -Syu base-devel codec2 python python-pip python-setuptools
pip install --upgrade pip numpy Cython wheel setuptools
pip install m17[Codec2]

Naturally you need the typical compilation tools, which on Arch are base-devel.

On systems that separate development headers, you need those too for Codec2, i.e. both codec2 and codec2-dev, or whatever the appropriate names are for your distro.

On many Ubuntu and Debian systems, the codec2 packages in the distro repositories is too out of date for use with pycodec2, so you may need to follow the upstream Codec2 instructions and the upstream pycodec2 instructions to get a fully working installation of both.

You may email me with clearly described problems regarding installation and I will do my best to help.


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