This signal with suitable FEC in a 2700Hz bandwidth should be copyable at a power level where you wouldn't be to tell that there was someone talking with SSB.

This signal with suitable FEC in a 2700Hz bandwidth should be copyable at a power level where you wouldn't be to tell that there was someone talking with SSB. There have been some examples showing that for older versions of the codec running at twice this rate. RE: fading, there isn't really any great way to fix that short of higher delays (longer FEC) or increasing bandwidth to be wider than the fade-- no other way around the signal not just being there.