[TowerTalk] Oxidized copper

K0FF K0FF@ARRL.NET
Fri, 10 Nov 2000 08:50:43 -0600



> I recall reading somewhere that copper oxides are conductive, which is why
> copper house wiring doesn't have the same problems as aluminum does.
> That being said, I'm wondering if you couldn't use a small copper split
nut
> to firmly attach two copper antenna conductors to one another without the
> need for soldering.  I realize that the connection would tend to come
apart
> under tension, but purely for electrical purposes, would it work (at HF
> anyway)?
>
> 73, Pete Smith N4ZR

Pete, I'm following up with a question to the group concerning the fact that
copper oxides MIGHT be conductive. Does anyone have info on this? I know
silver tarnish is conducive
 and was told once that it was the only oxide(or is it sulfide?) that was/

Meanwhile there's millions of those spilt nuts (Kearny's) out in the weather
doing a fine job on copper electrical wire that looks pretty dark to me.

I use regular wire nuts when repairing the Bev wires, and with good results.
Every time I simply twist the wire together and leave them without some
treatment like a wire nut or solder, there is a problem.

***UPDATE...I may have answered my own question. Got out the grandkids penny
collection and measured all the black pennies...they are conductive but the
one green one was not at all conductive> I guess the type of corrosion has a
lot to do with it.

73 Geo>K0FF


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