Hmmm... that's what I thought originally. Now I'm getting confused. I'm
real interested how this discussion shakes out...

www.telstar-electronics.com


DSB-SC can be received by an ordinary AM detector, no BFO required. The
two sidebands work with one another to provide the entirety of the signal
so there is no garble effect as encountered when one of the sidebands is
suppressed. In SSB the BFO supplies the missing side's opposite phase and
because it's local and not sent with the signal is why it's precise
tuning (or phase relationship) is critical.