[TowerTalk] Topband: Thoughts on making low resistance jointsbetween aluminiumtubing...

[Keith Dutson]

On Force 12 antennas you use NoAlOx plus aluminum rivets.  This seems to
work quite well.  The only negative, and it is minor, is that you must drill
out the rivets to disassemble the element.  I just took one apart that has
been up since 1999 and all joints are clean as a whistle with no sign of
corrosion.  BTW, the element is installed with the rivets pointing down to
prevent moisture from sitting in the rivets.

73, Keith NM5G

-----Original Message-----
From: towertalk-bounces at contesting.com
[mailto:towertalk-bounces at contesting.com] On Behalf Of Cqtestk4xs at aol.com
Sent: Tuesday, August 29, 2006 6:05 AM
To: TOWERTALK at contesting.com
Subject: Re: [TowerTalk] Topband: Thoughts on making low resistance
jointsbetween aluminiumtubing...

In a message dated 8/29/2006 10:20:45 A.M. Greenwich Standard Time,
la5he at otterstad.dk writes:

How do  people tackle this problem (and it would include Yagi constructors)
of  making low loss contacts at each section where an aluminium tube is
fitted  into the previous section.
 
For Yagis it's easy.  I put a small nr 6 stainless screw at each joint  .  
Before I insert the screw into the hole I put a dab of NoAlox into the  hole
and then on the screw.  I cover the screw with a few wraps of  tape.  When
you take the tape off years later the joint is still  clean.  
 
Bill K4XS

 
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