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[TowerTalk] using end caps

To: <>
Subject: [TowerTalk] using end caps
From: (
Date: Wed, 28 Mar 2001 18:05:52 EST
Various endcap problems:

Don't use em:  You get all sorts of bug frass in the elements that ultimately 
clog em up and they get full with water.  Also they smell evil and are a mess 
to clean up if you ever rebuild the antenna. You also can get whistling in the 

Use em:  They either pop off due to pressure changes and buildup inside the 
element, or they degrade and crack off due to uv exposure.

My current favorite is to use aluminum window screen formed around a slightly 
smaller piece of tubing, then shoved into the element or boom ends.  I fasten 
it with a dab of silicone sealant.  The element can breathe, they don't seem to 
fill with water and the bugs don't get in there.

Also, re rope.  If your elements are fairly tapered, they don't seem to vibrate 
too much.  Not a physicist, but maybe something to do with not resonating??

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