[AMRadio] 813 tubes

Bernie Doran qedconsultants at embarqmail.com
Fri Jul 9 18:55:45 EDT 2010

you can usually find them on ebay, neat older tube, I used them in the 50s 
and still have some, keep thinking  I will put them back on.
you have modulate the screen or let it " self modulate" through a choke. if 
you have significant drive power, consider triodes, especially for a 
monoband amp, plus they just modulate better, especially the low mu tubes. 
and the lower the mu the better.   Bernie W8RPW

----- Original Message ----- 
From: "RICHARD GEORGE" <k6kwq at msn.com>
To: "amlist" <amradio at mailman.qth.net>
Sent: Friday, July 09, 2010 4:11 PM
Subject: [AMRadio] 813 tubes

> I'm gathering parts for an 813 monoband amp. Probably not the best choice 
> of tubes but looking at the nostalgia amp for my AM station.
> I see RF parts has Taylor brand (probably from china} tubes and also see 
> there are some Russian tubes available. Are they any good ? Are there 
> better sources for 813 tubes I will need 2.
> Thanks
> K6KWQ Dick
> Amps by "MORE POWER"
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