Sean Costello wrote:
>Hmmm, the "Third SSB Method"? How does that work? I'll look up the
>reference on Tuesday when I am at a class, but any hints?  

You need two quadrature oscillators. The difference of their frequencies will be the resulting frequency shift.
Multiply with the first q.osc. signal, lowpass filter both branches, multiply with the second q.osc. signal, add the branch signals.

I'd like to have a quadrature oscillator opcode for it, maybe looking like this:
ar1,ar2   qdroscil   xcps [,iphs]

Jens Groh