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Re: [Amps] 3-500Z convertion

To: amps@contesting.com
Subject: Re: [Amps] 3-500Z convertion
From: Steve Thompson <g8gsq@eltac.co.uk>
Date: Tue, 25 Jul 2006 16:51:44 +0100
List-post: <mailto:amps@contesting.com>

Peter Chadwick wrote:
> Rich said:
> 
>>no, I thought he said only one of the two tubes was bad.<
> 
> Major confusion here........I thought he needed to replace both of them. From 
> what Karl Arne said, it sounds a bit as if the 4X500 is 4-250/4-400 with a 
> different base and an external anode. That makes them sound attractive, 
> except for the fact that the shape of them is awkward - the anode cooler 
> comes down very close to the glass envelope. 

If they're the ones I'm thinking of, the screen grid connection is a 
beast unless you have the proper socket.

Steve
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