On a sunny day (Mon, 12 Jun 2006 23:42:59 GMT) it happened Bob Dobbs EC42
wrote in pan.2006.06.12.23.42.57.909000@Quetzalcoatl:

On Mon, 12 Jun 2006 13:42:26 -0700, Telstar Electronics wrote:

So let me get this straight... In DSB-SC... both sidebands are
transmitted... but there is no carrier sent at all? Correct?... and the
carrier is re-inserted at the receiver.

That's what Panteltje would have you believe.
Without a carrier there would be no RF propagation.

Now with the swing set-up... both sidebands are transmitted... along
with the carrier... but the carrier's amplitude changes from extremely
low to a normal AM carrier when the modulation is added.

That's right, the supressed carrier becomes un-supressed according to the
amplitude of the Modulation, otherwise there wouldn't be a signal.

IOW: Supress the carrier out entirely and all you have is audio, no radio
propagation, have to shout real loud to get any DX out of that.

Sorry dude, the sidebands are RF.