[Amps] OT: RF Speech Processor Kits - Final Final

[Steve Thompson]

wb8jkr at juno.com wrote:
>  I'd  like to throw that unit together and experiment
> with it a bit, but it appears the Plessy SL1626 is
> not longer available .

The SL1626 is 'alc' before the clipper - you can leave it out and adjust the
input setting manually. Depending on the mic you might need to add a
straight gain stage. The auto gain adjust is useful in something like a
contest station where different people work the mic, and people shout when
things get hectic, but for an individual in a domestic shack I think it's
not necessary. The later VOGAD chip was SL627/SL6270 - as best I recall, it
was a drop-in replacement for the SL1626, but no less rare.

73, Steve



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