OpenGD77

The question has been asked before and unfortunately the answer is no to both options.

Colin G4EML.

There is one other feature to scanning that you may have overlooked. Every channel has two ‘Flags’ included. These are called ‘Zone Skip’ and ‘All Skip’. These control which channels are scanned in the Zone and in the All channels Zone. Using these flags you can control exactly which channels are sc...

All the radios I have come across that implement priority scan work as Pavel described. They only have one or two priority channels and those are constantly checked at a preset interval. If the scan stops on a non-priority channel the audio is briefly interrupted every second or so while the priorit...

Don’t forget that we have seen before that some radios had EEPROMs that were slow to write. We had to add the code to wait until the write was completed. Maybe speeding up the bus has caused the write to fail again.

Colin.

I have two MD9600s and I used to love them. However after using OpenGD77 for some time I now really hate the user interface on the 9600s. Everything takes so many button presses!

Colin G4EML.

The OpenRTX project is interesting but not yet at a usable level, especially for the MD9600 which is the least developed. It is progressing slowly but there is still a massive amount of work needed. It will be interesting to see how it progresses.

There is only one transceiver chip and it can’t transmit and receive at the same time so crossband repeat is impossible.

More people haven’t complained about this because it is not happening for them. Plenty of people are having analogue QSOs without any problem. Your radio appears to be behaving differently to others. That reply from Radioddity really does not say anything useful. In fact it contradicts itself. It fi...

Pretty much correct. That is what has been done to produce the OpenGD77 firmware.
It is still a lot of work especially as the data available for some of the major chips is very limited or not available. The Chinese chip manufacturers often do not release publicly available datasheets.