[ARC5] roller inductors

Jim Wiley jwiley at gci.net
Mon Jan 25 20:10:59 EST 2016



I miss Bobbi's contributions, and her sense of humor.   Could one of the 
moderators give her a special invitation to rejoin the group(s)?    I 
doubt that I am the only person here that feels this way.

- Jim, KL7CC

>
> On Mon, Jan 25, 2016 at 3:08 PM, Michael Hanz 
> <aaf-radio-1 at aafradio.org <mailto:aaf-radio-1 at aafradio.org>> wrote:
>
>     An intelligent young lady by the name of Bobbi Barmore on the old
>     Boatanchors reflector did some extensive tests on silver polish
>     for roller inductors because she was chief engineer of a broadcast
>     station.  Under microscopic analysis, the "quick" solutions like
>     the wipes and Tarn-X etched thousands of microscopic holes into
>     the silver layer, and guess what?  It then/enhanced/ the action of
>     atmospheric sulfides on the surface of the wires because of
>     significantly increased area exposed to the air. Switching to a
>     cream based polish solved the problem.  You might get quick
>     results with the quick methods, but you have set the stage for
>     eventual failure.  I've never had that problem with Hagerty's or
>     the other high quality silver polishes, and I have checked with a
>     microscope more than once since then.
>
>     Jus' sayin...
>     Mike  KC4TOS
>

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