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Re: [TowerTalk] Antenna loads for rohn 45

To: "'Terry'" <>
Subject: Re: [TowerTalk] Antenna loads for rohn 45
From: "Dave Tipton, W5DMT" <>
Date: Fri, 16 Jul 2010 16:58:59 -0500
List-post: <">>
18 Square Feet is the max windload for 130 feet of Rohn 45 and the normal 3
sets of guys.  I've always heard you don't add a 4th set of guys due to
something about compressing the base too much.

The windload on an M2 4 element 40M beam is 13 Square Feet.

The 5 element 20M beam from M2 with a 50 Foot boom is 10.9 Sq Feet.
Already, you've exceeded the towers rated capacity.

You might wanna look at going up to say a Rohn 65 tower (Rated at 63.4 Sq
Feet at 130) or maybe one of the AN Wireless towers if you want to go to
those extremes.

-----Original Message-----
[] On Behalf Of Terry
Sent: Friday, July 16, 2010 12:03 PM
Subject: [TowerTalk] Antenna loads for rohn 45

Can anyone tell me what kind of antenna load I can stack on Rohn 45?

I am looking at 130' of tower with a 4 element (full size) 40 Meter at the
130 foot mark but would like to stack 6X6 60ft boom 20 meter antennas one at
135 the other at 73".  The phyllistran guys would be at 43 86 and 129 more
or less.  Would adding a 4th set of guys make a difference?  then the would
be at 32,64,96, & 128.  Replay to




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