OpenGD77

You came to the right place, you will need to download the latest version of the CPS and firmware for your radio. The installation is fairly stright forward since folks have documented the process extensively.

Have fun and ask questions if you need help.

Thank you for the information on the preamp and photos, those are way to small for my eyes and current soldering iron. I may send it to a friend who is more talented that me and give it a try.

VE3RWJ wrote: ↑

Wed Feb 24, 2021 6:25 pm

Here's one I had a request for, a little bit of the Kimpossible theme, whatever that is.

36,2,0,2,24,2,0,2,36,2,0,2,24,2,0,2,39,2,0,2,36,2

These are great and I don't even know how to start my own. I would like the F1 theme song, I think it would be awesome!

Hi, I bought both radios from amazon, the first radio didn't seem to have an issue until sometime in the fall (I normally update firmware when they come out). I also have a couple of antennas and have tried the stock rubber duckie, a signal stick and a nagoya 771 all with the same result. I just res...

Upon some testing replacing antennas and using other radios on simplex it seems like my Rt3s is calibrated correctly as far as listening to the correct frequency but the s-meter only goes about 1/2 way up with a base station transmitting 30 watts and 15 meters away from the radio...

VK3KYY wrote: ↑

Sat Jan 06, 2024 12:21 am

Sounds like a codeplug problem

I just installed an old codeplug from a friend who is using Gd77 with no issues and the radio still won't receive on 2m.

well...
That is what I am trying to figure out... is there any chance it could be the CPS?

Well... I just received a brand new RT3S, took it out of the box, installed OpenGD77 and the exact same thing still happens. It does not receive on VHF, I tried swapping atennas but that did nothing. I have other radios in the house (HT and base station) adn they both receive VHF, not the RT3S with ...

I am having a similar issue with my RT3s. It is almost deaf on VHF, I tried older codeplugs and even on the spectrum scope there is nothing showing...

The firmware and CPS development take around 50% of my total spare time Daniel also spends a huge amount of time working on the firmware I don't think people realise quite how long it takes to develop firmware for these radios under the very tight constraints of very little memory etc Probably peop...