SSB

[Gene & Debby Stopp]

----------
> From: J.D. McEachin <jdm at synthcom.com>
> To: synth-diy at horus.sara.nl
> Subject: Re: SSB
> Date: Thursday, July 31, 1997 5:31 AM
> 
> Did you happen to make a pcb layout for the EN Frequency SHifter, Gene? 
> (hint hint ;)
> 
> JDM
> 

Nope - I built it all on two or three (can't exactly remember)
vectorboards. But hey, that's a good idea! Maybe someday.... does anybody
out there know what multiplier chips are readily available from Analog
Devices these days? I suspect that some of them (AD532 etc.) are out of
production or superceded by now, and that will affect the layout. It's been
a while since I've talked to the Hamilton rep and I don't work at the job
where the old contacts were anymore.

If a circuit board were to be made, the builder should be provided with the
option of using a regular quadrature VCO (rather than the beat-frequency
type). Although this would defeat the ability to do through-zero FM
effects, it would save on two of the multiplier chips and be more frequency
stable over time.

Just thinking out loud...

- Gene