Cantenna Resistors

[multi-volti at MULTI-VOLTI.COM]

I would ask the resistor mfr about compatibility with various available
oils. I recall a reason not to use motor oils, but I don't remember
what...it might have been flash point.

And food oils are undesirable from a stability standpoint. Oxidation or
hygroscopic (accumulation of water) properties might be issues with yet
other oils...each oil is made for it's specific purpose...if there is a
significant difference between xfmr and mineral oil when running near the
extremes of the Cantenna rating, it's possibly, even likely other oils will
behave differently at extremes.

Murray



----- Original Message -----
From: "Neil Morrison" <neilsmorr at HOTMAIL.COM>
To: <HEATH at LISTSERV.TEMPE.GOV>
Sent: Friday, October 25, 2002 12:42 PM
Subject: Re: Cantenna Resistors


> Just my 2 cents worth - you might want to check with an actual oil
> distributor/analyst/lab/specialist. They have a wide variety of
> unusual oils (I was interested in a pneumatic oil that is food safe)
> and I bet they could suggest a good choice for you. I suspect a good
> hydraulic oil might be OK; that stuff runs very hot, and you sure
> don't want it to flash burn. Since it runs at 2000 psi, it's pretty
> stable, but, as I said, ask an expert. They'll also be able to point
> you to a vendor if they don't sell it in small quantities.
>
> Neil
>
> ----- Original Message -----
> From: "CyberGeezer" <cybergeezer74 at HOTMAIL.COM>
>
>
> > Further to my previous reply--  thought I'd pass on this
> > from elsewhere in the manual--
> >
> > If transformer oil is not available, mineral oil may be
> > used, but DO NOT use any type of motor oil.  The
> > vaporizing temperature of motor oil is too low and would
> > cause excess vapor.
> >
> > 73 de W2GERry
>
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