Hello,
This is Marko from Belgrade, Serbia (KN04FR).
Using MD-380 and MD-390G with latest custom FW from 2019-09-28 and of course GD-77 with latest OpenGD77 FW.
Have two repeaters available (third coming soon), but I also use two Chinese HotSpots, both on Pi-Star 4.1RC6, with calibrated offsets, working fine, just for more comfort.
Also, ten years of beta testing behind me, in different field though, but I hope I can be useful.
73 de YT5HOK