[TowerTalk] Antenna & Tower Wind Load Ratings

[john at kk9a.com]

I had a Telrex 6el 20m beam and a HyGain 204 that made an annoying rattle in
the wind.  The HyGain also shed element tips. I have never tried rope in the
elements, one thing that I dislike about it is it requires end caps which
can trap water. Later I built Homebrew beams with the ARRL 120MPH element
taper schedule and the noise and breakage ceased.

John KK9A

To:	towertalk <towertalk at contesting.com>
Subject:	Re: [TowerTalk] Antenna & Tower Wind Load Ratings
From:	Steve Maki Date:	Fri, 16 Jun 2017 21:22:58 -0400

>On 6/16/2017 10:53 AM, Jim Thomson wrote:

>Vortex shedding is  well known.   Eles vibrate  up + down like crazy, like
6 
>Inches in total,
>in just a light breeze.  Ask anybody who own a 204BA or any wilson product.

>Those swedged eles are a pita..and so is
>having to put rope inside the eles..which is still in the current Hy-gain  
>204-BA manual.

While rope in the elements is not what I'd call an elegant solution; it
works, and works well in almost all cases to completely cure breeze flutter
without having to toss an existing antenna in the trash and start from
scratch.

-Steve K8LX