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Re: [Amps] Distilled water in a dummy load ?

To: Jim Thomson <jim.thom@telus.net>, amps@contesting.com
Subject: Re: [Amps] Distilled water in a dummy load ?
From: Joe <nss@mwt.net>
Date: Sat, 13 Feb 2021 11:24:17 -0600
List-post: <mailto:amps@contesting.com>
But distilled water is highly corrosive.
I'd worry about what it may pull out of anything it touches.

Joe WB9SBD

On 2/13/2021 11:08 AM, Jim Thomson wrote:
Is it possible to use  distilled water in a hb  dummy load ?
DL  consist of  4 x  200 ohm globars, wired in parallel..in an 8 gallon 
container.
I welded  4 x 3 inch OD  thick wall Alum pipes together, 2 stacked above 2.
One resistor resides  dead center in each alum pipe.   Each resistor is a
new  globar  type  SP,  12 inches long  x 1 inch in diameter.

For the amount of brief testing I do, and sometimes with low duty cycles, 
sometimes
high  duty cycles,   distilled water just might be  easier to  work with  vs 
xfmr oil.

To be used from  160-10m,  no higher freqs.

What I am worried about is the  dielectric constant of distilled  water.   That 
appears
to be a lot higher than that of  xfmr  oil.   It could  add a bunch more stray  
C  to the mix,
esp with each resistor inside its own  alum pipe..and pipes welded.

On paper,  distilled water  should be  able to extract heat a lot  better  than 
xfmr oil.

Jim   VE7RF
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