OpenGD77 CPS improvements

posted in: DMR, GD-77, Ham radio | 8

Some people have reported that the CPS is not automatically detecting the OpenGD77 com port even though the drivers have been loaded.

In an attempt to provide a workaround for this instance I’ve modified the CPS, so that the OpenGD77 support screen will show a Com port selector popup if the OpenGD77 com port is not automatically detected.

The latest version can be downloaded from here


In addition this version also remembers the last directory you opened a firmware file from, which will make it easier for users when uploading firmware to the GD-77 from this feature in the CPS

8 Responses

  1. Carlos


    Thank you very much and greetings from Mexico, as I had previously posted, I had problems with the previous CPS to read the radio, now with the new one, I read and write the radio without problems with win7 on laptop I3 ……

    There is something that apparently I am not doing well, since now having read and programmed with the new CPS, I can not have reception in any TG, I have checked if the color code, the time slot, and Everything seems to be correct, however I cannot hear any TG, (I have not misrepresented the initial confuguration where if I could previously listen to any TG in its corresponding and if I have the corresponding conversation groups).

    This happens only in digital, in analogue I have no problem, it was even a good idea to be able to enable or not the radio can be selected or not to transmit outside the amateur radio segment.

    Another thing that I have not found is the way to access the directory of individual contacts ……

    thank you very much.

  2. Roger Clark

    Can you post to in the CPS section

  3. Pablo

    Good morning, a query, I’m trying to run the radiodity hotspot in vhf and it hangs, the fireware is only for uhf or you have to change parameters. thank you very much.

  4. Roger Clark

    It should work on VHF

  5. Vincenzo

    Hi Roger,
    is OpenGD77 firmware ready to use GD77 as a pocsag transmitter?
    If not, do you have in plan it?


    Vincenzo (IZ7YKW)

  6. Roger Clark

    Its not possible to support POCSAG because the C6000 DMR DSP does not allow direct access to the audio

  7. David

    The drive google link does not work. Could you update the link, please? Thank you for your help.

  8. Roger Clark

    There is no point loading an old test version. I have subsequently updated the main version on github

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