On Thu, 7 Mar 2013 13:19:02 -0800 (PST), JIMMIE
wrote:

I just repaired (cleaned and reassembled) an antenna that had a problem
with corrosion between the female chassis mount N connector and the
aluminium plate it was mounted on. The connector was made of
silver plated brass. Is there anything you can treat the
connection with that will prevent this problem.
I was thinking Alonox but I have no experience using
this material and only know of using it with electrical wiring.
Any suggestions would be appreciated.

The corrosion wasn't between the silver and aluminum. It was between
the copper in the brass, and the aluminum.

The usual fix is to insert a washer made from some material half way
between copper and aluminum in the glavanic series. That's usually
stainless steel.

You may want to read about corrosion from an expert:
http://yarchive.net/electr/galvanic_corrosion.html
So whatever is necessary to exclude moisture from the sandwitch.

Alconox isn't going to do anything except temporarily clean the grease
and crud off the surface of the aluminum. It's really good stuff for
many things, but not for preventing corrosion.
http://www.alconox.com

--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558