Well.. tried again today when I heard some people jump on to do signal checks. A random guy jumped on asking for signal check, and another person answered along the lines of "I'm not sure if you're looking for someone in particular to confirm, but I can hear you just fine". Once they ended their quick back and forth, I keyed up asking for the same, but with no response. I'm certainly doing something wrong. I've got my "Receive Tones" off, and my "transmit tones" set to the settings provided me. There are no other codes that I can see on the repeater listing page. I can hear traffic, but can't broadcast in. I'm also not hearing a "kerchunk" when I hit the PTT button, so I wonder if I have a setting buried somewhere that I've messed up. I've reset both radios to factory and started from scratch... so, conversely, maybe there is something I haven't activated to be able to use the repeaters.
Or, I guess I'm probably just out of range...