[sdiy] 1-2-4 !

[Scott Stites]

Hmmmm.......that's a fascinating thought, actually.  Your analogy of SSB demodulation does bring up some interesting possibilities.

Going a little further 'out there', actually modulate an RF carrier with the synth, extract either sideband, transmit it to an SSB receiver and then inject another variable freq RF carrier into the received side band -  frequency shifting would be a result (or at least some good Donald Duck synth quacking).  Have any of you ham guys out there ever tried this?   I imagine with a 'stock' SSB receiver, the demodulated audio filter would make things a bit limited and lo-fi, but it still might be interesting.....

Cheers,
Scott


-----Original Message-----
From: jbv <jbv.silences at club-internet.fr>
Sent: Apr 21, 2004 2:26 PM
To: synth-diy at dropmix.xs4all.nl
Subject: Re: [sdiy] 1-2-4 !

Hi guys,

Thank you all for kindely answering my question.

BTW, here's an idea I've had in mind for quire some
time, and was wondering if it's worth testing it...
I guess it's related to a 4 quadrant multiplier / ringmod...
The best I could describe it is as a coder / decoder :
a carrier is used for the coder (a sine for instance),
and another carrier is used for the decoder, but slightly
different : slightly different freq and/or phase, different
harmonic content... Could this make some "ghost harmonics"
appear in the decoded signal, a bit like on short-wave radio,
when the receiver is not 100% exactly tuned to the radio
station frequency ?

Has this been done already (and am I re-inventing the wheel
as always) or is it just crap ?

Thanks,
JB



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