I'm having the same problem.
At this time, I'm trying to hit only one repeater that's in my area. I downloaded the radiodditty program software for the GM-30. Looked at putting in the setting for said repeater. Didn't seem like a big deal BUT. I stopped there because best I can tell, I can enter the exact same stuff on the radio itself, which I have. However, I can hear people but I cant talk.
Something is not adding up and I can't figure it out. Any help would be much appreciated.
Repeater I'm trying for..