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Re: [Amps] 572B grid

To: Amps reflector <amps@contesting.com>
Subject: Re: [Amps] 572B grid
From: Vic K2VCO <vic@rakefet.com>
Date: Sun, 23 Jul 2006 11:14:48 -0700
List-post: <mailto:amps@contesting.com>
kenw2dtc wrote:
> "This is very interesting, because it contradicts what I've believed:  
> that the 572B offers no additional power output over the 811A unless you 
> raise the plate voltage"
> 
> Good question.  I've included the Waters spec on the tube:
> 
> http://w2dtc.com/1964-waters-572b-spec.jpg
> 
> Perhaps the original Waters tube is different than the current versions 
> on the market?

The mu of the Waters tube is 190 compared to 160 for the 811A.  This is 
what they must mean by 'higher power sensitivity'.
-- 
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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