[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
> 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 

Dennis D. W7QHO
Glendale, CA

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