Wheel and I tested out TARS 1.0.2 beta 2 in the A-10C module of DCS World 1.2.2 and made some interesting observations. UHF (Radio 2) and FM (Radio 3) worked as expected when one of the aircraft was in the air, but we couldn't hear each other over AM (Radio 1), even though we verified we were both set to the same frequency.

Once both aircraft were on the ground, at the same airport, in line-of-sight, we couldn't communicate reliably on any radio. Occasionally, we'd break through on radio 3, but it was inconsistent.