Originally Posted by
JohnBurke
Used to be that we just turned off the damn transponder.
It would be possible (and quite easy) to implement modern digital systems such that it would send a "signoff" signal when manually switched off. Curious if that's part of the ADS-B standard... it would definitely rat you out. There could be legit reasons to implement that, spectrum and processor management to avoid wasting system resources "looking" for something that's not there. ADS-B is not the same as cell phones, but cell phones do send such a signal.