As Jim wrote, the ANGLE the guy makes with the tower IS IMPORTANT. A
thought experiment: put one achor out at 1000 feet and the other two in at
30 feet. The near ones are pulling almost straight down, the far one is
pulling almost straight out. This is not a stable situation. If the ground
is flat, make them all equal (and the angles will automatically be equal).
If the ground is not, make the ANGLES the guy makes with the tower equal.
I've seen a tower bent over because the wires were unevenly spaced.
-Rex-
K1HI
Rex Lint
Merrimack, NH
-----Original Message-----
From: towertalk-bounces@contesting.com
[mailto:towertalk-bounces@contesting.com] On Behalf Of chas
Sent: Wednesday, April 28, 2010 2:13 PM
To: Tower and HF antenna construction topics.
Subject: Re: [TowerTalk] Digging holes for anchor rods
Jim Brown wrote:
> On Wed, 28 Apr 2010 09:20:01 -0400, Mark Robinson wrote:
> What matters is 1) the ANGLE between the guy wire and the tower which
should
> be held at Rohn's recommendations, and the horizontal angle between the
guys,
> which should be close to 120 degrees.
>
> 73,
>
> Jim K9YC
Jim, don't you reckon that if you had to sacrifice one vs the other that the
support every 120* on the compass is probably more important than the
distance out from the base to the support pipes? as long as the latter
exceeds the 80%?
In fact, here on the coast, I really think that the compass spread is a lot
more important considering that with a hurricane, flat winds, downbursts and
all that sort of thing that we have down here... can come from every
direction... iow, forget trying to guy against assaults from prevailing
directions. sure as shooting, you will get something from your weak side!!
thanks
chas
--
chasm@texas.net k5dam Houston, TX
http://militarysignatures.com/signatures/member14013.png
--
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
No virus found in this incoming message.
Checked by AVG - www.avg.com
Version: 9.0.814 / Virus Database: 271.1.1/2840 - Release Date: 04/28/10
02:27:00
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|
