KT76A removed yesterday for GTX335 install. Working when removed. Last certified in September 2018 when it did have an alignment to correct frequency just out of spec. Comes with tray and connector still wired to the Narco AR-850 encoder.

KT76A s/n 132047.
AR-850 s/n 60110

Never had any problems with this combination in the 15 years I've had the aircraft. Just decided that I like the GTX335 package. If you're going Skybeacon or other standalone ADS-B, this would be a good spare transponder.

$300 shipped. The encoder come with it if you want it.

Looks like a KT76A with an above average faceplate.