LimeSDR mini MMDVM

Projects LimeSDR
1

Is it possible to use the LimeSDR mini as a MMDVM using Pi-Star or other software?

2

MMDVM mainly requires a processor such as Pi. The Transceiver only needs be quite simple. There are many cheap multi channel Transcievers you can add to do this. Such as

or

https://www.sv1afn.com/dra818.html

LimeSDR mini is complete overkill for this purpose. You could get a complete solution such as sharkrf openspot2 for the same price. Having said that, nothing stopping you from trying to code it yourself…

3

Yes, it is possible to use MMDVM with the LimeSDR-mini. Here is a 7 channel DMR transmitter (actual device is a LimeNET-micro but it should work exactly the same with the mini)

7_channel_spectrum
7_channel_spectrum1024×600 42.8 KB

And measured DMR MER (the adjustment is still WIP):

DMR_MER_filter1
DMR_MER_filter11024×600 60.1 KB

Tested so far DMR, YSF, M17 with MMDVM.