Originally Posted by
A and C
I think that ADF is likely to stay, Jamming of GPS is quite easy to do with a low powered signal over a wide area.
This is not a good reason for holding onto ADFs. Airliners will have DME/DME and INS to backup GPS, there will be a basic VOR infrastructure for a long time - so the high profile traffic is sorted and the spam cans flying around just aren't a credible terrorist target. (radar vectors to the nearest small airport and that's us grounded if there is an attack on the navigation infrastructure. ) Cricket scores on the other hand seems like a good reason (or just slap an old AM/FM cassette deck in )