The radio hardware and user interface communicate with this API: https://app.swaggerhub.com/apis-docs/KI6SYD_1/MAX-3B/1.0.2
See http://max-3b.ki6syd.com for instructions on assembling the hardware and building firmware, in addition to background on the radio. The GitHub project just contains design files and code.
Software in this project is licensed under the GPLv3 License. https://www.gnu.org/licenses/quick-guide-gplv3.html
Hardware in this project is licensed under the TAPR Open Hardware License. https://tapr.org/the-tapr-open-hardware-license/
This project redistributes Ace.js, Copyright (c) 2010, Ajax.org B.V.