Anthony Arispe of ArispeAviation.net talks about Garmin GTX 327 Transponder in great detail, plus goes through how to use the interactive panel of the unit.
https://www.youtube.com/watch?v=_m3zliUtFMI
http://img.youtube.com/vi/_m3zliUtFMI/mqdefault.jpg
http://VansAircraftBuilders.com/
