Icom A200
George,
I put the TSO'd ICOM A200 in my 8A and have had good luck so far (155 hrs). Antenna is belly-mounted. Good reception, the local tower can pick me up at 20 miles out at 5,000', maybe farther than that but I haven't really tested for maximum range. There was a problem with too much cockpit noise overloading the electret microphone on the headset, but this was solved using a MicMuff. If you rig up for night flying, you'll want to connect the display lighting to a dimmer.