[Boatanchors] Sealing Cobraheads and other Inv Vee Dipolequestions

[Morris Dillingham]

Thanks for the information on RTV.  I have some that I bought at a ham =
fest
that was supposed to be good for antenna work and it is Permatex.  This =
is a
brand I would normally associate with automotive work, however, after =
seeing
your advice I read the small print and it releases acetic acid.  Looks =
like
the "oxygen sensor safe" specification might "cure" the problem.

         73 de KI4IUA
         Morris=20






-----Original Message-----
From: boatanchors-bounces at mailman.qth.net
[mailto:boatanchors-bounces at mailman.qth.net] On Behalf Of Glenn Little
WB4UIV
Sent: Wednesday, November 23, 2005 4:15 PM
To: Philip Atchley; boatanchors at mailman.qth.net
Subject: Re: [Boatanchors] Sealing Cobraheads and other Inv Vee
Dipolequestions
>Questions.
>1.  I'm planning on sealing with standard RTV.  Will the fumes build up =

>too much in the Cobrahead and be "trapped", causing future problems?

"Standard RTV cures by releasing acetic acid. Acid is corrosive to =
metals.=20
No a good choice. If you must seal with RTV use a type that cures with=20
alcohol. This can be had from an auto parts place and is listed as =
oxygen=20
sensor safe. It can also be had from good electronic supply houses.
=20
Glenn
WB4UIV"


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