If you mean the Radioddity GD77 aka TYT MD-760. The manufacturer does not publish the schematic
This is the same for most commercial radios
OpenGD`s Schematic
Re: OpenGD`s Schematic
Please explain what you mean by Schematic
This word normally means circuit diagram.
If that is what you mean, the answer is the same, there is not circuit diagram for this radio.
BTW. What is your callsign.
You also have not posted to the New Members section to let us know something about yourself