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[TowerTalk] rope in elements

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Subject: [TowerTalk] rope in elements
From: (Tom Rauch)
Date: Tue, 27 Mar 2001 07:21:13 -0500
> Force 12s Tapering may have solved low wind speed resonances, However
> I have a broken shortest 10m Director on a C31XR-H which was rated at
> 135mph. That broke at the junction of the 5/8"and 1/2" tube at wind
> speeds of 80-85mph. 

Clive is right, I have the same problem. I had a 10 meter director 
drop off a ten meter antenna the first joint in from the tip after just 
over a year of air time.

I installed rope in the replacement element, but it is too much 
headache to repair all the elements with the antenna in the air!  
Especially since the blasted rivets prevent feeding a rope into the 
element without drilling then out!!! 

My Force 12 antennas rattle and hum even in very mild breezes. I 
really wish I knew about that problem before I installed them.
End-caps and ropes are cheap insurance.

The antennas going up now (Hygain 5 elements) have both end-
caps and ropes inside the elements. In the future I'll remember to 
do that with ALL antennas, no matter what the manufacturer says.

It's a heck of a lot easier to be safe and correct the problem on the 
ground BEFORE installing the antenna.
73, Tom W8JI 

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