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

[Wayne Kline]

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
_______________________________________________



_______________________________________________
TowerTalk mailing list
TowerTalk at contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk