[AMRadio] GG 813 Linear in GE Ham News


W7QHO at aol.com W7QHO at aol.com
Fri Sep 30 23:58:29 EDT 2005


In a message dated 9/30/05 8:28:14 PM, ve6pg at yahoo.com writes:


> ..ok don,then what if went with 4 572b's instead? they
> have a higher pd i believe..tim..sk..
> 

How about 100 X 12AT7s?   At 5 W dissipation per tube (Sylvania tec manual) 
should be good for 250 watts of carrier.   Would need a 300 vdc @ 2.5 amp power 
supply.   Input and output matching circuits might be a bit of a challenge, 
though........

Seriously, why not go with something like a 4-400 triode connected.   Or 
maybe a couple in parallel for some serious power. These jugs seem to be readily 
available at reasonable prices.   Had no problem accumulating a lifetime supply 
for my T368.

Dennis D. W7QHO
Glendale, CA



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