On a sunny day (Mon, 22 May 2006 17:44:40 -0500) it happened "JSF"
wrote in :


In the new Commerical Broadcast AM transmitters their Audio is Class D audio
amps driving the finals saving allot of AC power.

Exactly, and no excessive distortion in the audio either.
I see no reason why it cannot be done for CB AM (at high power too).