[TowerTalk] Wind and the antenna

[Doug Ronald]

When the shear pin on my LPDA breaks in high wind, and thus can freewheel, it likes the back end to the wind. Kind-of surprised me, but that's what it does...

-Doug W6DSR

-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces at contesting.com] On Behalf Of Ken K6MR
Sent: Wednesday, January 6, 2016 10:32 AM
To: towertalk at contesting.com
Subject: Re: [TowerTalk] Wind and the antenna

Which is why you want the antenna torque balanced. Then it doesn’t matter what direction the antenna is pointed, or where the wind comes from.

Modern software makes it easy enough to do that there is no reason not to do it.

Ken K6MR


From: Cox, Norman R.
Sent: Wednesday, January 6, 2016 10:13
To: Edward McCann; Kent Olsen
Cc: towertalk at contesting.com; Edward McCann
Subject: Re: [TowerTalk] Wind and the antenna

Yes, I guess it depends.  If you have very small elements and a long boom, that would certainly make sense.  With large HF arrays, I guess I would try to orient the antenna to  lesson torquing around.  At my QTH, the wind continuously changes directions, in gusts.

Norm
________________________________________
From: TowerTalk [towertalk-bounces at contesting.com] on behalf of Edward McCann via TowerTalk [towertalk at contesting.com]
Sent: Wednesday, January 06, 2016 12:02 PM
To: Kent Olsen
Cc: towertalk at contesting.com; Edward McCann
Subject: Re: [TowerTalk] Wind and the antenna

In my experience, head the beam into the wind, like the bow of a boat. All elements are then subject to symmetrical loading. At ninety degree angles, individual elements sometimes whip around on their own course, and occasionally into some sort of mechanical resonance.
AG6CX

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