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@contesting.com] On Behalf Of Ken K6MR
Sent: Wednesday, January 6, 2016 10:32 AM
To: towertalk@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@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@contesting.com] on behalf of Edward McCann
via TowerTalk [towertalk@contesting.com]
Sent: Wednesday, January 06, 2016 12:02 PM
To: Kent Olsen
Cc: towertalk@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
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|