Towertalk
[Top] [All Lists]

[TowerTalk] guys, insulators, etc

To: <towertalk@contesting.com>
Subject: [TowerTalk] guys, insulators, etc
From: kz5qdx@communique.net (Douglas Bradford)
Date: Sat, 18 Jul 1998 11:26:31 -0500


T A RUSSELL wrote:

>       The large (fist size) insulators should be used with 1/4 inch
>         guy wire.
>
> >Should I use "genuine" Rohn 1/4CCF clamps (forged, hot dipped) or are
> >the malleable ones OK?
>
>         AARGH!  Most people have gone to using "guy grips",
>         actually called "dead-end's"  in the industry.  They
>         can be purchased individually from Texas Towers or
>         boxes of 50 (for 1/4 inch) or 100 (for 3/16 inch) from
>         Preformed Line Products Company in Cleveland, OH.
>         I have seen two towers fall over where guys pulled
>         through cable clamps that have worked loose.  In both
>         cases, I believe there were only two clamps installed
>         and the cable was not "served" as shown in the Rohn
>         catalog.  Serving 1/4 inch cable is a royal pain.  Cable
>         clamps can work loose with time and need to be
>         inspected / retightened on an annual basis.  Go back
>         and forth between the nuts as the first one will loosen
>         when the second is tightened.  Just this year at Field Day
>         I found a loose clamp and the guy informed me he had
>         tightened them with a wrench.  Obviously he did not go
>         back to the first nut.  If you insist on using clamps, be
>         sure to use good quality galvanized clamps, 3 each.
>
>         Guy grips are a snap and cost effective.  My guy grips
>         and 1/4 inch cable held up two 70 ft trees which fell on
>         them following a small tornado.   Enough said?   N4KG

Remember that the  Tower is only as strong as its weakest
link.  I have seen some guyed with only one cable clamp on
each end.  The Worst example 110'  Tribander - 2 el 40 mtr
Stacked. Good Coax ,.etc.    Used one cable clamp on this
Plastic Covered Clothes line Wire..  Was in a Hurry to get
on the air And did not wait until he could get proper Guy
wire.
 It Did Not Last A Week.  Tower is only as strong as the
weakest link. Better to save money on the Rig than  on the
Tower. And Don't get in a hurry.

73  Brad  KZ5Q
Long  Live  CW
Preferred  Mode



--
FAQ on WWW:               http://www.contesting.com/towertalkfaq.html
Submissions:              towertalk@contesting.com
Administrative requests:  towertalk-REQUEST@contesting.com
Problems:                 owner-towertalk@contesting.com
Search:                   http://www.contesting.com/km9p/search.htm


<Prev in Thread] Current Thread [Next in Thread>