Heathkit, so far as I know, never sold oil for the Cantenna... Gave some
advice on where to get it, but that's it. The Hialeah FL retail store had a
local source that they would direct folks to, but didn't carry it
themselves.. I could be wrong about other stores
----- Original Message -----
From: "Michael Tope" <W4EF@dellroy.com>
To: "Jim Lux" <email@example.com>; "Towertalk" <firstname.lastname@example.org>
Sent: Monday, June 07, 2004 12:07 PM
Subject: Re: [TowerTalk] Heath Cantenna
> ----- Original Message -----
> From: "Jim Lux" <email@example.com>
> > Thermal properties are basically the same as USP mineral oil (drugstore
> > oil). The big differences:
> Jim are you sure about that? The reason I ask is that both
> the Heath and the MFJ Cantenna style dummy loads specify
> duty cycle curves for mineral oil and "transformer oil". For
> 1KW, the duty cycle for mineral oil goes to zero, whereas they
> specify 10 minutes (I assume this is from a room temperature
> oil baseline) for transformer oil. Either Heath and MFJ cooked
> the numbers to sell more transformer oil (MFJ sells it for
> $25/gallon), or "transformer oil" is actually better at pulling heat
> away from the Carborundum resistor.
> In any case, if this is wrong, I would like to know. Getting
> mineral oil in small quantities is a lot easier and cheaper than
> trying to find real transformer oil.
> 73 de Mike, W4EF...............................................
> See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any
questions and ask for Sherman, W2FLA.
> TowerTalk mailing list
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
TowerTalk mailing list