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Re: [Amps] water cooling

To: amps <amps@contesting.com>
Subject: Re: [Amps] water cooling
From: Ron Youvan <ka4inm@tampabay.rr.com>
Reply-to: ka4inm@tampabay.rr.com
Date: Fri, 18 Dec 2009 23:31:30 +0000
List-post: <amps@contesting.com">mailto:amps@contesting.com>
> In another conversation the subject of water hose length came up. For 
> those using anode water cooling how long a piece of tubing do you use 
> for safety and isolation between the plate and ground, or where leaving 
> the enclosure?  It's been over 20 years since I worked with this stuff 
> and "as I recall" we used between 15 and 20 feet of coiled hose from the 
> anode running 6 kV DC.  IIRC it wasn't a lot more even in the big RF 
> generators. I don't think we ran over 8 or 10 kV DC on anything.

   I operated a transmitter long ago that had a pair of 1.5" loops of "saran" 
tubing to the plates 
of dual tetrode tubes operating at 3 kV with no problems.  I think the material 
is more important 
than than the length.
-- 
    Ron  KA4INM - Of what you see in books, believe 75%.  Of newspapers, 
believe 50%.
                  And of TV news, believe 25% --
                  make that 5% if the anchorman wears a blazer.
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