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Re: [TowerTalk] copper tank coils

To: towertalk@contesting.com
Subject: Re: [TowerTalk] copper tank coils
From: "Jim Lux" <jim@luxfamily.com>
Date: Sat, 30 Sep 2023 15:38:43 -0400
List-post: <mailto:towertalk@contesting.com>
        


Silver plating is usually very thin, and doesn’t have a huge effect on the RF 
resistance.  One advantage is that silver oxide is conductive, copper oxide is 
lossy. Also, if you have a moving contact - silver is MUCH better than copper 
in terms of staying low resistance. 

See W8JI: http://lists.contesting.com/_amps/1997-09/msg00040.html
 


On Sat, 30 Sep 2023 17:38:50 +0000, "Mark, K5AM" <k5am@zianet.com> wrote:

> Jim wrote:
> I have wound identical coils using silver plated copper,
> copper, and also 304 SS. The aluminum coils ran hot.
> The SS coils ran stupid hot.

Interesting!
It would also be great to see data comparing:
silver plated copper
copper
oxidized copper

73,

Mark, K5AM

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