|[AMRadio] 813 tubes|
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.
> K6KWQ Dick
> Amps by "MORE POWER"
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