OpenGD77

Thank you for the responses, I sure do appreciate it. It's just weird to me that one radio (the 9600) has issues where other radios don't seem to have any issues at all with the same transmissions (GD-77, SDS-100). Perhaps the 9600 is more strict about CTSS decoding, or perhaps it's a Chinese radio ...

You need a frequency counter with some accuracy. But maybe you can get some assistance from a fellow ham. In the calibration menu there are two menus with calibration points for 145 & 435 MHz that is accessible with Sk2 + arrow down. Ah, so if I can confirm the TX is properly calibrated, I can assu...

Could be good to check the frequency calibration too, if radio is off it can also result in cuts when they modulate heavily. So I know just enough about electronics to be dangerous but not helpful. Are there any guides that I could try to follow to accomplish this? I also assume I'll need access to...

Thanks for the response! I've been listening a bit more lately and that same guy on the same repeater cuts out the same way every time on the MD-9600, but not on the GD-77. I've now found a second guy on a different repeater who has his audio cut out for about 3 seconds every 20 seconds or so. As be...

I was listening to a couple of guys chat on my MD-9600 in analog using a UHF repeater I get a good signal from. The repeater uses tone 103.5Hz for both the input and it includes it on the output. When one of the two people were talking, the audio would cut out for a little over a half second or so a...

VK3KYY wrote: ↑

Tue Mar 12, 2024 8:46 pm

Using a larger PSU is not going to help unless the voltage is dropping below 14V

Yeah, I was having issues with a power supply that had insufficient amperage and I was seeing big voltage drops on UHF (VHF was fine). Bigger power supply seems to have solved those problems.

I figured I'd start a new thread on this. It was shared that power calibration is now available on all models: The manual probably needs to be updated, because the calibration feature has been on all radios for about 6 months or more. It is safe because it never actually changes the official calibra...

Thanks for this info! This definitely helps me understand why my radio was doing what it was doing.

I also plan on trying the calibration as soon as I get a chance.

Awesome, good to know! I'll give it a go ASAP.

The firmware has a frequency and power calibration screen I did see that, but the manual states it's only for certain radios. Since messing with power output seems like something that could mess up a radio, I've stayed away from it since my model was listed in the manual. Is it safe to use on all m...