Garey Barrell <[EMAIL PROTECTED]> made an utterance to the drakelist gang
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Jim -
The Jones connector pins are cadmium plated steel.
I'm certainly no chemist, but I wonder if the ammonia, (present in most
brass polishes,) is what got the cadmium. It sounds like you may be
down to bare steel, which might be a problem in future.
Old steel chassis used to be cadmium plated, and would grow the same
crud. (Chemical term there.....) I think cadmium plating is now among
the millions of things that have been around hundreds of years which
have now been declared harmful to our health! :-)
73, Garey - K4OAH
Glen Allen, VA
Jim F. wrote:
"Jim F." <[EMAIL PROTECTED]> made an utterance to the drakelist gang
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Results of my experiments:
Tried 3 things to clean the battleship gray, tough as
nails, oxidation from Jones plug pins that the 12VAC
filament voltage could not even penetrate.
1. Craig Deoxit (RS - very expensive) and didn't work
2. Contact spray (RS) cleaner didn't work
3. MWW Brass Chrome & metal polish worked.
Got it from the supermarket. It is a gray paste
that turns oxidation black when left on for a while
and removes it in chunks with a Q-tip.
The pins were so bad that I had to do it a
couple of times then clean the residue with RS
spray contact cleaner and Q-tips.
It's much cheaper than buying and installing
new 15 pin Jones connectors, if that mounting
type are even available.
Nice to see shiny metal coming through but don't
know what to do about the plug receptacle.
Does anyone have a cable mount 15 pin Jones
receptacle for sale ?
Without the shell is OK as I can use the old one.
Regards,
Jim / W1FMR
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