[AMRadio] Deoxit

[manualman at juno.com]

Phosphor/bronze and slver-plated stuff, depending on its chemical
composition, can tarnish to different degrees. The deoxit can cut through
some of that stuff but it's not a permanent cure. Switch wiping can
prolong good contact connection but lack of wiping (equipment sits idle
for long periods) may require contacts to be cleaned again.
Someone with a good chemical or metals background may have a better
answer but that's what I've found over the years.

But hey, what do I know, I'm listening to Iron Butterfly as I type and
enjoying a music psychic experience.

Pete, wa2cwa
 
On Sat, 29 Jun 2019 16:39:30 -0500 <w5jo at brightok.net> writes:
> Those I have been working on are Phosphor/Bronze in the RF and mixer 
> 
> sections then silver plated in the oscillator section in some 
> receivers.  In 
> others it is Phosphor/Bronze throughout.
> 
> Jim
> W5JO
> 
> -----Original Message----- 
> 
> 
> You didn't mention what type of plating is on the band switch 
> contact
> area.
> 
> Pete, wa2cwa
> 
> On Sat, 29 Jun 2019 15:29:29 -0500 <w5jo at brightok.net> writes:
> > I have a question that I have been pondering for a while and maybe 
> I
> > need
> > some additional evidence.
> >
> > Over the years Deoxit has become a staple of switch cleaning by 
> us
> > boatanchor aficionados.  Everyone seems happy with it so much so,
> > that
> > nothing else is mentioned.  However I have had some occurrences 
> that
> >
> > required reapplication of the substance after some time, usually 
> in
> > months
> > to a year.  I wonder if anyone else has that happen?
> >
> > My observations are particularly  related to band switches.  With
> > reapplication the switch goes back to normal operation but later 
> the
> >
> > problems surface again.   The problem is frequent enough that I 
> have
> > ceased
> > using Deoxit and am trying a different chemical.
> >
> > So does anyone else see these problems?  I am curious.
> >
> > Jim
> > W5JO