[AMRadio] Screen Modulated 813


Bry Carling bcarling at cfl.rr.com
Mon Dec 11 09:15:26 EST 2006


That is really interesting.

I wonder what he sets the "BIAS" voltage to?
Interesting that it needs -200V for the negative swings....

There is not much information about the requirements for 
those two 120V AC transformers, but I imagine that they 
could be fairly small since they are only supplying bias voltage.

Comments?

73.5 de AF4K, Bry
 
> >From Jim W5JO:
> 
> As an interesting sidelight to this, I read an article on
> Ted/KC3OL's website some time back about modulating an SB
> 200 directly..  As I recall it was written by Chuck/WA0ZHH.
> 
> 
> Reply by Jim, JKO:
> 
> I found the sight URL:
> 
> http://www.kc3ol.dynip.com/downloads/wa0zhh.jpg
> 
> JIM
> 
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