I hope this fits here?
I am considering what direction to take with regard to ADSB compliance in Australia. Because I have a GTX327 xponder and there are no plans for a plug in replacement available from Garmin, (The GTX330 requires a whole new tray) I am considering the DYNON behind the panel transponder. Am I right in assuming that I will have to upgrade from my 4500 to a 5400 touch EFIS to be able to operate the Dynon transponder? I did have the foresight in 2009 to run and terminate an additional gps output from my GTN530W for the gps in requirement for the future ADSB capable transponder. Are there screen shots available somewhere of the 5400 transponder interface?
Kevin