[TowerTalk] Question regarding electrical connectivity of frozen telescoping aluminum tubing

[Joe Subich, W4TV]

> Being a Belt and suspender type I vote to completely disassemble the 
> antenna and scotch pad or XX steel wool all mating joints and use the
> copper antisize and re assemble
I would not use *either* steel wool or copper bearing anti-seize.  Both
copper and steel will set up electrolysis with the aluminum that will
cause future conductivity and mechanical problems.

Stick with thee scotch pad and an anti-seize made specifically for
aluminum.

73,

    ... Joe, W4TV


On 2019-07-17 6:41 PM, Wayne Kline wrote:
> Rick,
> 
> 
> 
>      The mechanical .058 typicial wall thickness common in  antenna construction  leaves a .009   differnece  and a .0045 gap .
> 
>       Many of the popular  Nolax or Penatrox or NONE conductive  the aluminum or copper no seize   have conductivity.
> 
> 
> 
>      IMHO the Electrolysis the develops on none coted surfaces IS none Conductive.  We than have the skin  effect argument  to no disassemble.
> 
> 
> 
>     Being a Belt and suspender type  I vote  to completely  disassemble the antenna and scotch pad or XX steel wool all mating joints and use the copper antisize and re assemble
> 
> 
> 
> Wayne W3EA
> 
> 
> 
> My .02
> 
> 
> 
> 
> 
> Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10
> 
> 
> 
> ________________________________
> From: TowerTalk <towertalk-bounces at contesting.com> on behalf of Richard (Rick) Karlquist <richard at karlquist.com>
> Sent: Wednesday, July 17, 2019 6:20:56 PM
> To: towertalk at contesting.com
> Subject: [TowerTalk] Question regarding electrical connectivity of frozen telescoping aluminum tubing
> 
> I bought a used KT34XA and between the seller and me I disassembled
> it enough to get it home.  Another KT34XA owner recommended that
> I disassemble it completely  and buff it with Scotch bright and
> then reassemble using NoAlOx.   The purpose of this was to assure
> good electrical conductivity.
> 
> This raises the question:  if an old antenna has difficult to
> disassemble tubing pieces, is it possible for two pieces
> to be mechanically stuck together yet have poor electrical
> connectivity?  Or conversely, if conductivity looks good using
> a 4 wire ohmmeter, are we in the "don't fix it if it ain't broke"
> mode.
> 
> I've seen a lot of discussion about ways to unfreeze elements
> but this topic doesn't seem to have been covered.
> 
> Rick N6RK
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