On Wed, 20 Oct 2004 16:34:05 -0700, Roy Lewallen
wrote:

I have some ideas, but that's all. I hope someone with more recent
direct experience with AM broadcasting than mine who really knows the
answer will comment.

I will go out on a limb and speculate that the carrier isn't being
reduced during modulation. If it were, simple envelope detectors would
produce serious distortion. And if the carrier isn't being reduced, then
the power has to be greater when modulation is present. But let's see if
an expert will comment -- if I'm wrong I'll gladly eat my words.

If *you* don't know, Roy, WTF does??
--

"What is now proved was once only imagin'd." - William Blake, 1793.