is it possible to pick up the cockpit - to - air traffic or tower frequencies on an "air band" portable radio from INSIDE the plane? I was wondering. On a recent flight aboard a 737 i asked the F/A if they had headphones for the armrest-mounted audio system and they said no, not on that flight (i guess the flight was too short) so I tried my little radio in my carry-on but got nothing but static. I heard that you can pick it up on a certain channel of the plane's audio system (channel 9???) but how else can I pick it up? And is it really true that a little portable radio can disrupt the plane's navigation system?