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Re: [Amps] Anyone build a GU5B?

To: "Roman Hanovych" <romanh@kb.lv.ukrtel.net>,"Amps Amps" <amps@contesting.com>
Subject: Re: [Amps] Anyone build a GU5B?
From: "Tom Rauch" <w8ji@contesting.com>
Reply-to: Tom Rauch <w8ji@contesting.com>
Date: Thu, 4 Oct 2007 20:27:30 -0400
List-post: <mailto:amps@contesting.com>
> Played with them some 10 yrs ago, as much as I remember at 
> 6 kV gain was
> still below 10 db, but never
> tried to optimize the circuit - it was more than enough.

That's too bad. That prevents use with 1500W output and I 
did not want to use much more than 4 kV.

How much bias do they take Roman? It looks like the mu is 
low and the input impedance is high.

I'm trying to find a cheap triode that will run steady 
nearly 100% on time at 1500 watts output with 100 watts of 
drive. I also want instant heating.

73 Tom 


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