[Antennas] What to put in a dummy load

Thu, 29 Apr 2004 01:03:27 -0500

Mineral oil , use it and forget all the rest of the exotic ones.. Your
drugstore has in .. Run it dry, sure for a short while.. Bird will be most
happy to sell you the new diagraphams and seals, small price to pay to have
a new sealed unit , that most likely will now out live you.. mac/mc

----- Original Message -----
From: "Elliott Bill W Civ WRALC/MASTD" <[email protected]>
To: "'Jim Isbell'" <[email protected]>;
<[email protected]>
Sent: Wednesday, April 28, 2004 10:22 PM
Subject: RE: [Antennas] What to put in a dummy load

> Jim
>
> I had a Heath "Cantenna" many years ago.  As I remember they listed an oil
> you could use (I don't remember which that was), but, the recommended
> contacting the local power company and getting some transformer oil from
> them.   Most of the time they would donate a little for PR reasons, and
they
> didn't have the procedures to charge for that sale anyway.   This
> transformer oil could stand up to the requirements of heat transfer
without
> breaking down.
>
> Good luck on finding a friendly face at the power company.
>
> 73, Bill, KJ4O
>
> -----Original Message-----
> From: [email protected]
[mailto:[email protected]]
> On Behalf Of Jim Isbell
> Sent: Wednesday, April 28, 2004 22:14
> To: Mail list Antennas
> Subject: [Antennas] What to put in a dummy load
>
> I have a 200W dummy load that apparently once held oil. It is now empty.
> At least that assumption is made on the basis that the bottom of the
> container has a bellows loaded bottom to allow for expansion.   There is
> no place to fill or drain it but I can cut a hole and add a filler cap
real
> easy.  Once open I can check for leaks and repair them.  OK, now what is
the
> best thing to put in it...or does it really matter that much.....Corn Oil
is
> cheap and readily available.  Is there any real advantage to mineral oil?
> Or is there any real advantage to some exotic concoction that I never
heard
> of.  What about a fan and lots of air, and no oil at all.?
>
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