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[Amps] Use of stainlees steel in RF environment

To: <amps@contesting.com>
Subject: [Amps] Use of stainlees steel in RF environment
From: 2 at vc.net (2)
Date: Fri Feb 28 12:29:17 2003
Yes.  Stainless-steel typically contains high amounts of Ni and Cr.  
Thus, it is quite similar to resistance-wire and it can be expected to 
heat when carrying very much RF current.  Because of it's high R, I used 
stainless-steel shimstock to construct the vhf suppressor for a 4cx3000A 
amplifier. [see website] However, for bolting together Cu, or Cu-Zn 
(brass) straps carrying substantial RF-current, stainless-steel 
screws/nuts work ok.  

>I have been told by Amp building Elmer that it is highly unacceptable to use
>stainless steel hardware in a RF enclosure.  I was planning on using SS
>screws in many places in close proximity to the 3CX3000 that I am building.
>He said that I should use brass only.  Is this correct?
>
>Thanks, Bob W6TR
>
>
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-  R. L. Measures, a.k.a. Rich..., 805.386.3734, AG6K, 
www.vcnet.com/measures.  
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