The Caig Laboratory chemicals - DeOxIt and Moving Contact Lubricant
(MCL) - are also great for restoring conductivity of any contacts. I
have some Jones plugs at my station entrance that go flakey every few
months, and a few drops restores them like new.
73, Pete N4ZR
Download the new N1MM Logger+ at
<http://N1MM.hamdocs.com>. Check
out the Reverse Beacon Network at
<http://reversebeacon.net>, now
spotting RTTY activity worldwide.
For spots, please use your favorite
"retail" DX cluster.
On 8/17/2015 8:33 AM, George wrote:
Charly and the group,
Using files/sandpaper/emery cloth/etc for contact cleaning is a bad
idea for reasons already cited. Alcohol with paper/business cards
works for light cleaning. If more vigorous cleaning is required I
would suggest getting a contact burnisher. These are available from
electronic supply houses and eBay.
73, George
W2GS
On 8/17/2015 12:10 AM, Charles H wrote:
it will be a few weeks until I get whatever this man sells, but it is
very unlikely sandpaper coated with silica only.
"EmEry" Emery on paper for fine grinding is mostly aluminum oxide for
whatever good or ill that means.
A file makes me nervous due to the temptation to push too hard.
I have used white typing paper which works on very little
oxidation/corrosion but can be seen as a dark smear on the white
paper which tells you are getting something off the contacts. Fully
black silver contacts usually will not come clean enuf with just paper.
I have not tried spray-on contact cleaners, sold by that naming, nor
carbon tetrachloride (yes I can buy that). I have used commercial
silver polish, for tableware and granny's candelabra, on silver coax
sockets and that works good on medium tarnish but needs lots of
rubbing and the really black tarnish resists that polish about half
good.
I am open to good suggestions. Charly
Date: Sun, 16 Aug 2015 18:28:02 -0700
From: w7why@frontier.com
To: amps@contesting.com
Subject: Re: [Amps] Ham sells fine grit thing to clean contacts
Someone told me once that strips of paper from a brown paper bag works
good for cleaning relay contacts. 73
Tom W7WHY
On 8/16/2015 6:13 PM, Jim Hargrave wrote:
Sandpaper is a no no on relay contacts. It leaves minute sand
particles imbedded in the contacts, especially silver plated ones.
Use a metal contact file or good grade of extra fine Emory cloth.
73, Jim - w5ifp@gvtc.com
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