[AMRadio] anyone for qrp am?


W7QHO at aol.com W7QHO at aol.com
Sun Mar 6 18:31:38 EST 2005


In a message dated 3/6/05 3:02:36 PM, jcandela at prodigy.net writes:


> Another alternative is series modulation. This has efficiency issues using 
> a
> class A series modulator, but for low power AM this might be the ticket.
> At the following link are two circuits that I found somewhere, and am just
> passing them on. I never tried them.
> 
> Regards,
> Jim
> WD5JKO
> 
> http://pages.prodigy.net/jcandela/Modulator/
> 
> 

Essentially a form of grid modulation, see ARRL Handbook 1954 page 250 for a 
version using   a 6SL7 and a 6Y6.   I've heard these on the air sounding very 
good.

Dennis D. W7QHO
Glendale, CA



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