Pete,

Here is a listing of most commonly used aircraft frequencys.

http://www.fly-ul.com/navfreq.html

It looks like 122.75 is used for general communication between fixed wing planes and 123.025 for general communication between helicopters.

It should be noted that anyone using one of these Icom radios would have to have an FCC license (no big deal to get). It should also be remembered that this radio should be used ONLY FOR EMERGENCYS. It is not a CB radio nor an FRS or GMRS radio for general blabbing. Use it only for real emergencys and keep your transmissions to a minimum. NEVER hail an aircraft just to see if you can.

There is nothing illegal about MONITORING these channels in a non emergency situation if you are bored and have nothing else to do while you are sitting around playing with your other survival toys.

Military channels are a whole new ballgame but I suspect they monitor 121.5.

Still looking for input from people more knowledgable than me. <img src="/images/graemlins/laugh.gif" alt="" />