OpenGD77

FYI. The change i made to allow Row 1, 2 and 3 of the keypad to be scanned, seems to cause a problem on some UV380, so I have changed this to conditional compilation, so that only the DM-1701 is driving ROW 3 , High and Low Colin thinks there is a problem with residual voltages due to the capacitan...

OK. I should read the description not just look at the pictures ;-) BTW. I saw a youtube video review of the MD-2017 and it showed the special button in the middle which appears to operate like a small track pad , like on a laptop Can you look on the PCB for the front panel to see the connections t...

Looking on AliExpress the cheapest version with GPS is https://www.aliexpress.com/item/1005005257953233.html However the pictures do not show a USB cable, and I don't know if this radio uses a special USB cable?? There is another more expensive listing, which shows that the radio comes in a box, bu...

Do all versions include GPS or is there also a non-gps version ? Edit. I now see the text "Optional GPS" My mistake... Don't worry about the GPS, I found a pin-to-pin compatible GPS module, which I can get full documents and support, it is named ATGM336H, and it was used in Baofeng DM-1702. My Baof...

Bellow teardown of my TYT MD-2017 For your information. https://r.amo.host/public/images/Baofeng-DM-2017/teardown/1.jpg https://r.amo.host/public/images/Baofeng-DM-2017/teardown/2.jpg https://r.amo.host/public/images/Baofeng-DM-2017/teardown/3.jpg https://r.amo.host/public/images/Baofeng-DM-2017/tea...

Re: Calibration It is only saved permanently to Flash if you press SK2 + Green to leave the calibration. Pressing Green (without SK2), the calibration is only in memory. This functionality is by design, so that the operator can exit the calibration menu and use the VFO to transmit on some specific ...

Currently my priority is to add the Calibration screen from the UV380 to the other radios, and also to enable CTCSS during DTMF Tx on the MD-9600. Colin already added it to the MD-9600 but there needs to be some changes to the UI because of the screen size on the MD-9600 is smaller I started to por...

The displayed votage is precise now in this version, I will try to use the battery voltage down to 6.6v and give the actual voltage to you. Photo for your information: https://r.amo.host/public/images/Baofeng-DM-1701-re/bat_adc_final_test.jpg The current battery voltage display is very accurate!! I...

I've created new sections in the forum for the DM-1701 and MD-2017 I will move this thread to the new section later today There is a small typo issue on the annoucement, It is not DM-1801, DM-1801 is in GD77 series. About the other model names except DM-1701, I found some reference for your informa...

I released the latest GD77 sources yesterday Perhaps you can experiment with adding Chinese language support to that radio, however there is not much ROM space remaining , so you should use the Japanese build because this only contains the English and Japanese texts I do not know the normal method ...