Greetings!
I have a short demo video about transmitting DMR with the LimeSDR-mini (as a subscriber radio - MS, not repeater).
The transceiver uses GNU Radio for the modulation and demodulation and code from Jonathan Naylor’s MMDVMHost for the data link layer and call control layer.
The vocoder used is Codec2, which works seamlessly with MMDVM-based repeaters if the DMR FID is set correctly.