We’re having a problem with the (older) KT-76A in our RV-6A, and I was wondering if someone here had any thoughts. ATC has told us on the last few flights that our Mode C is intermittently dropping out, and they have asked if I have two transponders on board. (Answer: no!) We tested on the ground and saw that our transponder was swapping between codes 1205 (which we had put in to test) and 0200 (which we absolutely did not put in). We even bought a different KT-76A unit and had the same issue, which leads us to believe it’s a wiring issue or a connection issue. But has anyone ever heard of or dealt with this issue before? I’d happily buy a Trig TT-31 to swap it out (which is the “plug and play” swap for a KT-76A), but I feel like the issue is some sort of wiring, connection, or antenna issue, not the physical unit itself. Any thoughts?
For ADS-B, we have a (micro)Avionix Tailbeacon, which also doesn’t seem to be picking up the squawk code from the transponder.
For ADS-B, we have a (micro)Avionix Tailbeacon, which also doesn’t seem to be picking up the squawk code from the transponder.