On Mon, 12 Jun 2006 23:50:21 GMT, Bob Dobbs EC42
wrote:

+++On Mon, 12 Jun 2006 16:17:21 -0500, DrDeath wrote:
+++
+++ There is no carrier.
+++
+++No Carrier - no propagation
******************

You have to remember that in DSB-SC and in SSB tranmission the audio,
modulating signal, spectrum is mixed up to the desire frequency range.
In these voice signals the audio is now moved u p in the frequency
spectrum. That is essentially what modulation does, frequency
transform. In both DSB-SC and SSB, your are now transmitting a band of
frequencies that is equaly to the voice bandwidth at varying power
densities.

In DSB-LC, the carrier goes along for the ride to demodulate the
signals at the receiver. The carrier does not carry ant information at
all.


james