RTV is very often available as gasket maker/filler from your friendly
neighborhood auto parts store.
Permatex #16B, Black, Silicone Adhesive Sealer IS NOT SUITABLE,
CONTAINS ACETIC ACID
PERMATEX #598B, Black, Hi-Temp RTV Silicone Gasket Maker IS SUITABLE and
DOES _NOT_ CONTAIN ACETIC ACID
73,
Tom Hammond N0SS
At 00:30 10/23/2008, David Cutter wrote:

Cheap RTVs such as used in bathroom sealant has
a vinegar smell and will attack copper. In a
small confined space inside a radio that's not
good. In an open outdoor environment where the
gas can escape it's not such a problem. Dow
Corning and others make RTVs with benign
contents, but at a considerable increase in cost.
Surface mount components have practically no
exposed copper and pcb tracks are not exposed,
so, I wonder whether the acetic acid attacks the tin coated contacts.
David
G3UNA
----- Original Message -----
From: <mailto:[EMAIL PROTECTED]>Bob
To: <mailto:[EMAIL PROTECTED]>[EMAIL PROTECTED]
Cc: <mailto:elecraft@mailman.qth.net>elecraft@mailman.qth.net
Sent: Wednesday, October 22, 2008 7:35 PM
Subject: Re: [Elecraft] K3 mobile
OK... May I ask why?
I have seen it done in commercial products and I
recently did it when I was assembling
my SoftRock receivers because of my concerns with the #30 wire breaking.
The two reasons I might think of would be any
detuning effect or fear of the material used
attacking the wire insulation.
Any wisdom on this subject out there? I did
not see or am not aware of the Elecraft
advisory.
73,
Bob
K2TK
<mailto:[EMAIL PROTECTED]>[EMAIL PROTECTED] wrote:
I have seen the use of dope, sealers and so on
strongly discouraged by Elecraft.
matt, W6NIA
Oct 22, 2008 10:30:51 AM, <mailto:[EMAIL PROTECTED]>[EMAIL PROTECTED] wrote:
There are at least two ferrite core transformers in the K3 that are
supported only by their thin wires. I'm concerned that they may not
survive a mobile environment. It would take only a dab of RTV
(silicone adhesive sealant) to secure them, but I don't know if this
has been discusses or approved.
Windy KM5Q
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