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Re: [TowerTalk] what not to do in your tower

To: "Tower and HF antenna construction topics." <>
Subject: Re: [TowerTalk] what not to do in your tower
From: Michael Tope <>
Reply-to: "Tower and HF antenna construction topics." <>
Date: Thu, 22 Apr 2010 18:45:48 -0700
List-post: <">>
I forwarded a copy of Hector's email to the tower owner along with a 
copy of the Rohn hardware page that has their shackles and a note 
suggesting that he change out that improper hardware (I also recommended 
that he subscribe to TowerTalk).

73, Mike W4EF/6

On 4/22/2010 6:31 PM, Steve Maki wrote:
> Roger (K8RI) wrote:
>>> Think of them as mechanical fuses  ;)
>> They certainly are the weakest link in the system. OTOH maybe I
>> shouldn't say that without seeing the other ends of the guys.<:-))  I
>> guess I'm a bit puzzled as to why put those rings in there in the first
>> place. The links above them are probably about 1200# which is still way
>> under even 3/16" EHS.  It looks like he's using the 6000# test
>> Phillystran...with 1200# links?
> Well, once they decided to use the screw chain links, they needed
> something that would fit into them, which the thimbles would not do.
> This part of the install was not planned very well, but the rings, which
> appear to be 1/4", are a little better than key rings.
> Next time they will undoubtedly will use a shackle right there...
> -Steve K8LX


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