[Icom] PW-1 SO-239 discoloration

[Ken]

Hi, Good idea for the unused coax sockets, I use the plastic corks from
champagne bottles, they screw on the SO-238 sockets and it keeps them real
clean. Collecting them is also fun, hi, hi. Best wishes, Ken 

--- ma.locksmith@juno.com wrote:
> Yes, and no....
> 
> IF the connector body is silver plated, it is very "normal" for it to
> tarnish....  just like dinnerware that is silver.
> 
> But, that means that you have an atmosphere that is heavy with sulphur
> compounds.  The tarnish is usually silver sulfide.
> 
> The other types (cheaper) are usually nickel plated and these do not
> discolor.  The silver plating gives the best contact resistance
> (minimum)
> and reduces unwanted leakage around the connector.
> 
> I ALWAYS recommend using the PL-259 and SO-239 that have Teflon
> insulation and silver plating.  They are somewhat harder to find, but
> are
> much better in performance.
> 
> You can remove the tarnish by using a liquid silver cleaner like Tarn-X.
> 
> All you do is wipe it on and then WASH EVERYTHING OFF.  You can see the
> tarnish go away.  It's a chemical reaction and there is a chemical
> residue that you MUST remove or it will corrode the connector.  I use a
> Q-tip to apply the chemical, then a hot water rinse.  
> 
> It might be time to put dummy 259s on every unused 239 connector to help
> prevent future occurrences.
> 
> Ed
> K1ZOK
> 
> On Sun, 7 Apr 2002 08:37:30 -0500 "WA9ALS - John" <wa9als@starband.net>
> writes:
> > Much of the time I have PL-259 connections to SO-239 connectors 1 and 
> > 4 of
> > my PW-1's antenna switch.  When I'm contesting, I usually also have 
> > PL-259s
> > attached to 2 and 3.
> > 
> > Is it normal for the SO-239s that are unused to discolor brownish?  
> > Today I
> > noticed that the areas of connectors 1 and 4 that are exposed to the 
> > air are
> > brownish, but the part that's usually under a PL-259 is 
> > pristine/shiny
> > silver.  Connectors 2 and 3, that are only used during contesting 
> > and
> > uncovered the rest of the time, are completely discolored.  Other 
> > SO-239s in
> > the shack are not discolored like this, although some are much 
> > older, e.g.
> > on my tuner.
> > 
> > Normal for the PW-1 connectors??  Any way to clean them up?  
> > Protective
> > lubricant to use?
> > Thanks!  73 - John (WA9ALS)
> > wa9als@starband.net
> > 
> > 
> > ----
> > Your Moderator: Dick Flanagan W6OLD, icom-owner@mailman.qth.net
> > Icom FAQ: http://www.qsl.net/icom/
> > 
> 
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