forum.pistar.uk

I experienced this same thing and momentarily disabling the screen under "MMDVM Display Type" solved it. I'm guessing because the screen is using the same serial port as the firmware update...

That board appears to be identical to what I got - I can only get it to work with the STM32-DVM modem setting in simplex mode. Duplex mode doesn't work for me at all.. like wise as well did you find a solution? It was actually my fault - I was incorrectly assuming that leaving the radio talkgroup(s...

I have the offset dialed in pretty well (hence the low BER), so I'll give the deviation a try..Thanks!

I'm using a Chinese duplex HAT and have noticed that receiving for duplex mode seems to be hit and miss, depending on the radio used. My CS750 is really bad, with my TYT MD-UV390 being much better but still hit and miss at times. My BER is very low (0-0.3) and offset between RX and TX frequencies is...

That's not a TX offset. Stolen from the SharkRF forums: From Connect Systems: "Selects the Reference Frequency used when receiving on the current channel. The reference frequency can be shifted to allow the radio to operate on channel frequencies that would otherwise be blocked by internally ge...

I can't get my duplex board to work in duplex mode at all, so I think my issue is something else beyond the mentioned topics. My TRX is blank when in duplex mode, so that's probably a good starting clue.

That board appears to be identical to what I got - I can only get it to work with the STM32-DVM modem setting in simplex mode. Duplex mode doesn't work for me at all..

Here's another related post for those searching:
viewtopic.php?f=3&t=665

Looks like it's coming soon, in a way that doesn't require manual editing..

I have this installed: https://www.ebay.com/itm/Duplex-MMDVM-Hotspot-Support-P25-DMR-YSF-for-Raspberry-Pi-with-2-Antenna-US-Ship/163093603360 On a Raspberry Pi 3B+ with a 3.5" Nextion screen and am trying to figure out how to get both timeslots to work in simplex mode, using this screen: https:...