[Amps] Distilled water in a dummy load ?

Jeffrey L. Bauman jeffbauman at yahoo.com
Mon Feb 22 12:26:51 EST 2021


I have used mineral oil in my cantenna successfully as well.

It's most cheaply sourced by the gallon from large animal veterinary clinics
where it is used as a laxative and coat dressing.

Good luck.

Jeff
W8KZW
www.w8kzw.homestead.com
w8kzw at arrl.net
Davisburg, Michigan

 

-----Original Message-----
From: Jim Klein [mailto:k7rdx at charter.net] 
Sent: Sunday, February 21, 2021 8:08 PM
To: MU 4CX250B
Cc: Geert Jan de Groot; Amps group
Subject: Re: [Amps] Distilled water in a dummy load ?

Palstar DL5K works well for me...No oil,fan cooled from
Palstar...Jim,K7RDX..

On Sun, Feb 21, 2021 at 12:46 PM MU 4CX250B <4cx250b at miamioh.edu> wrote:

> My instinct is that mineral oil would be a better coolant than 
> distilled water, with no corrosion issues.  You can buy it at any 
> pharmacy, and while it isn't rated at quite as high a temperature as 
> transformer oil, it works quite well. I used it in a Cantenna for 30 
> years! As I recall, it was recommended byHeathkit  as a substitute for 
> transformer oil.
> 73,
> Jim w8zr
>
> Sent from my iPhone
>
> > On Feb 21, 2021, at 1:35 PM, Geert Jan de Groot <pe1hzg at xs4all.nl>
> 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.
> >
> > Personally, I'm using the Ameritron ADL2500, which is 4 hefty 
> > resistors
> in a case with a fan. I modified it so it automatically switches the 
> fab to reduce the noise.
> >
> > No leakage, no corrosion, no mess if I drop it or I kick it. Much
> lighter. No dangerous oils, and my shack doesn't smell like a chip 
> shop when I'm doing some testing.
> >
> > 73, Geert Jan PE1HZG
> >
> >
> > _______________________________________________
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