[AMRadio] Screen Modulated 813

SBJohnston at aol.com SBJohnston at aol.com
Mon Dec 11 18:37:33 EST 2006

brett.gazdzinski at verizonbusiness.com writes:

> Most 813's had graphite plates, and I never remember
> them showing color, I always thought that would be way beyond
> what they were good for, or was good for them...if they were glowing!

I was testing my single-813 grounded-grid amp the other day and had it making 
500 watts out cw.  The plate was a bit red at peak output, but getting very 
red fast off the peak of the tuning.  

Steve WD8DAS

More information about the AMRadio mailing list

This page last updated 14 Dec 2017.