OpenGD77

You can always have two entries for a talkgroup, one for each slot, each with a slightly different name. Then choose the one you need when building the TG list for a repeater. The good thing is that the OpenGD firmware allows you to configure your codeplug in many different ways, everyone will have ...

OpenGD77 simplifies the codeplug by only needing one channel per repeater. This is configured with the frequencies and colour code and a 'TG List' which is set up separately. That TG list contains all of the talkgroups you may wish to use on that repeater. The same TG list can be used for several re...

You may be able to use my RD5R tool to generate some CSV files. However the file format is not exactly the same as that used by the opengd77 CPS. So you will still need to do some manual editing to get the columns in each file to match. As Roger says, to make the best use of the new features of Open...

Factory firmware can be locked.

See https://www.dgunu.com/2020/05/retevis-r ... 5-mhz.html

Colin G4EML

No, the functions of the buttons and knob are fixed.

Colin G4EML

Note that the 220 MHz band is experimental and intended for receive only with reduced sensitivity. Although it appears to transmit, most of the power is NOT on 220 MHZ.

Green on its own only saves until the power is cycled (For testing)
SK2 + Green saves the values to flash when you are happy with them.

From memory, the performance of the GD77 is pretty reasonable on both bands and compares well against other radios. Certainly not 10dB down on VHF as you are suggesting. It is a while since I tested my GD77 so I have just repeated the test on my Marconi 2955. The performance is identical on VHF and ...

You will not see a com port until you have loaded the new firmware into the radio.
The original factory firmware and the bootstrap loader do not enumerate as com ports.

As far as we know we have firmware versions for all revisions of the MD9600. Of course TYT could change the design again at any time so we can never be certain.(They have done that about 5 times already).

Colin G4EML