Why don't voice radio communications use FM?

Mxsmanic wrote:
Larry Dighera writes:

You'll have to cite a source for this nugget of knowledge.

FAA AIMs and CFRs make it pretty clear that communications involving a
controller are pilot-controller exchanges, not pilot-pilot exchanges.

Are you familiar with Common Traffic Advisory Frequency (CTAF)?

Yes, but it and similar schemes don't involve a controller, so
obviously the communication is between aircraft directly.


But you just said that all communications are air-ground. You can't
back pedal.