# project — Open Hardware Directory

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**1 project listed.**

## OpenRTX — Open-Source Firmware for SA868 Two-Way Radios

Open-source firmware replacing the proprietary SA868 radio module code on the T-TWR, enabling the M17 digital voice protocol — a modern, royalty-free digital voice standard for amateur radio.

[Details](https://openhardware.directory/projects/openrtx-open-source-firmware-for-sa868-two-way-radios) | [Markdown](https://openhardware.directory/projects/openrtx-open-source-firmware-for-sa868-two-way-radios/md)