OpenRTX is a free and open source firmware for digital ham radios, top-down designed with modularity, flexibility and performance in mind.
Currently OpenRTX is being actively developed for the following radios:
- TYT MD-380/390
- TYT MD-UV380/390
- TYT MD-9600
- Radioddity GD77 and Baofeng DM-1801
This firmware is highly experimental and currently under development, this means that it may not have all the expected functionalities. Contributions and testing are anyway warmly welcome and accepted!
For information on currently supported radios and features, see the Supported Platforms page on our website.
For hardware and software documentation visit openrtx.org
Warning: read the Disclaimer section first!
Pre-built binary images of the OpenRTX firmware for each one of the supported devices are available on the releases page: to flash them on your radio you can use the OEM firmware upgrade tool or, alternatively and for TYT MD-3x0 and MD-UV3x0 radios only, you can also use the radio_tool program or tarxvf's web based flashing tool dmr.tools.
Between releases, pre-built binary images containing the latest firmware updates are available through nightly builds from the master branch. The nightly builds are available here:
Finally, the instructions on how to compile the OpenRTX firmware, also in its emulator version on Linux, are available on the compilation instructions page on our website.
If you need detailed instructions on how to flash the firmware to your radio look at the dedicated page on OpenRTX's website or reach us on our channels!
From the release version 0.3.3 the OpenRTX firmware provides experimental support for the M17 digital voice mode.
Currently the radios supporting this digital mode are the following:
- MD-380, MD-390 and RT3 UHF version support both modulation and demodulation.
- MD-380, MD-390 and RT3 VHF version support only demodulation, modulation is a work in progress.
- MD-UV380 and MD-UV390 support support both modulation and demodulation.
- GD77 and DM-1801 currently do not support the new digital voice mode.
To make the digital mode work, some modding is required: refer to the dedicated page on our website for the details.
This project was created for research and amateur radio use only, we are not responsible for improper uses of this code which might lead to unauthorized transmission, reception or patent infringments.
The OpenRTX firmware is released WITHOUT ANY WARRANTY: anyone flashing a binary image obtained from the sources made available through this repository does it at its own risk. We always test all the code on our devices before publishing it on the repository, however we cannot guarantee the absolute absence of bugs and potential side effects.
To reach out, come to our M17 Reflector or into our Discord Server.
To support the development of OpenRTX you can make us a donation using Liberapay.
If you want to donate some hardware to facilitate OpenRTX porting and development, contact us.
This software is released under the GNU GPL v3.
minmea is released under the DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE v2.
Code for STM32F405 USB driver is released under the MCD-ST Liberty SW License Agreement V2.
OpenRTX was created by:
- Niccolò Izzo IU2KIN [email protected]
- Silvano Seva IU2KWO [email protected]
- Federico Amedeo Izzo IU2NUO [email protected]
- Frederik Saraci IU2NRO [email protected]
Our wholehearted thanks to the contributions from the community:
- Joseph Stephen VK7JS, which implemented voice prompts
All this was made possible by the huge reverse engineering effort of Travis Goodspeed and all the contributors of md380tools.
A huge thank goes to Roger Clark, and his OpenGD77 which not only inspired this project, but as a precursor, provided a working code example for the GD77 radio family.
A warm thank you goes to SP5WWP and the M17 community for bringing their libre protocol into our obscure undocumented hardware.
Also thank you for donating hardware to the project:
- M17 Project
- laurivosandi
And thanks to everyone who donated via LiberaPay.