OpenGD77

My serial number is 2303AXXXXXand it appears to be the latest version although there is no version number on the pcb. See my thread about hardware versions a couple below for pictures

Thanks for the info Colin Yes, unfortunately the background processor noise on receive on my radio is very high, to the point of annoying on DMR. I'll experiment a little with earthing as you suggest and see if I can improve it any. I've also found the maximum volume to be somewhat lower with the re...

Working! Not 100% sure what the issue was, I re-seated the ribbon cables and tried a new extension cable and we were away. Went back to the first extension cable and that's fine too. So I'm guessing one of the ribbon cables was the issue. On first use it does have a couple of quirks around processor...

I figured it was probably his wheelhouse

First bit of debug - powering up the pico with usb power does give me the "MD9600 remote head" message - good start! Which i guess means I should look at power supply to the head first.

Righto gents, my first attempt to get this working has unfortunately failed. Symptoms are just a blank screen and no controls working. Not sure if there is supposed to be a heartbeat led on the Pico? The radio started up with the normal morse code jingle. Mic buttons appear to do things plugged into...

Thanks Colin, I used the 'quick' file load method to do the original firmware load yesterday so I'll update it again now. Or in doing that have I already uploaded the latest version? I wonder is there an sense in adding an audio buffer/amp at the head end to bring it up to a level where noise isn't ...

Boards complete (except for JP1 which I may not use), will test with the new firmware when it's ready. Also ordered a cat7 flat cable of 3m but I have a few cat 6 ones around as well. Those ribbon cable connectors were a bit of a challenge but they came up ok. Just need to wash a bit of flux off to ...

Thanks Colin, it is indeed V5 hardware - or at least supported by the V5 firmware, which is loaded and working just fine

Colin
ZL2FL

Sounds like good news on the hardware front then - thanks for all the feedback guys. I'll go ahead and load V5 and let you know how it goes.

Colin
ZL2FL

No worries, I'll wait for him to check in later