its probably me. havent quite figured out how to tune and transmit properly. I wish AH had a downloadable manual. Searching for this stuff in online help doesnt work very well for me.
to tune to a specific channel, bring up your text buffer as if you were gonna type something. just above where you see your text appear as you type, you see those boxes? all the way to the right, there's one labeled "vox". if you tune....say 138.....in there, then hit enter, you will then use the "T" key to speak on that channel. only those tuned to that channel will hear you though.
i think it is the F12 key to speak to those in range. i've got that one mapped on my throttle as a PTT button.