C4FM Dstar P25 MMDVM Digital Relay Board DMR Supports for Raspberry Pi 4B

List of verified vehicles GM300 M120 older machine GM3188 3688 GM338 recommended CDM1250 CDM750 more assembled goods average effect SM120 SM50 special interface 950x with a certain failure rate DMR cart series XPR4550 M8268 FT series 7800 7900 8900 ICOM 2720 suitable for simple work simple DR 1X simple recommended MTR2000 a bit complicated need to write frequency as required import configuration patience Huawei E403 50B To change the fuselage circuit flying line make the connector the complexity is the highest not recommended you can find a HAM friend for paid adjustment Huawei 450C not supported by the test Information update 2019 12 10 The relay board can only be used with the Raspberry Pi The single board cannot be used directly Of course it can be connected to the computer through the USB serial port but it is an in depth method of use The MMDVM for PC program is not perfect At present only command line programs in DMR mode have been compiled If you have programming skills you can try the computer command line method The computer BlueDV program can drive the relay board but it can only work in the simplex direct frequency mode and cannot realize the relay mode Therefore Raspberry Pi is the easiest and quickest way to play Environmental support Raspberry Pi 3B 3B 4B NanoPi OrangePi Windows OS BlueDVLimitation factor The GPIO of Orange Pi is special and requires a jumper Windows only provides DMR mode BlueDV only supports simplex