https://m17project.org/
M17 is a community of open source developers and radio enthusiasts. We're building a radio protocol, along with hardware supporting it.
M17 Project
TR-9 - M17 protocol compatible handheld - schematics, PCB design files, BOM.
M17-Project
M17 standard specification
GNU Radio M17 protocol implementation
Various educational materials concerning M17.
Repeater for the M17 system.
Mini17 - QRP M17 handheld
M17 modem board for 9600-baud capable radios
A set of M17 tools
OpenHT FPGA design
