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Re: [TowerTalk] Professional attachment hard line to Rohn tower

To: towertalk <towertalk@contesting.com>
Subject: Re: [TowerTalk] Professional attachment hard line to Rohn tower
From: Steve Maki <lists@oakcom.org>
Date: Sun, 8 Jul 2018 21:16:06 -0400
List-post: <mailto:towertalk@contesting.com>
On commercial towers we use a hoisting grip (one per cable) and a shackle (also one per cable) to support the dead weight of the cable, and appropriately sized snap-ins all the way down to keep the cables from flapping & flopping around too much in the wind. Of course the snap-ins have to have a place to snap in to, which is normally a *waveguide* ladder (should be called a cable ladder now-days), or individual brackets of some sort that have 3/4" holes to accommodate the snap-ins. Like *cluster* brackets, *triangles*, *box brackets* *T-brackets* or other items like that. And those items have to be mounted somehow on tower legs or tower horizontals or tower diagonals.

However, I don't really recommend the snap-ins for ham use on smallish towers (up thru R65). It's way overkill and not appropriate in most cases.

The hoisting grip is a good idea, as it fully prevents gradual cable slippage which will cause grief at some point. But I'd recommend just doing a nice job of taping the cables down the leg(s) or down the middle of a face.

Current thinking about common mode currents usually suggest running the feedlines (and everything else) up *inside* the tower as a weapon against the dark side. I agree with this.

-Steve K8LX

On 07/08/18 16:03 PM, CEPitts wrote:

Want to attach 1/2" and or 7/8" hard line to Rohn tower specifcally Rohn 55 on one tower face horizontal brace or the tower leg and  want to know if anybody has done this with brackets or some sort of attachments from a 3rd party manufacturer of said brackets or hardware? A search of the Rohn catalog did not seem to reveal any sort of hardware available from them.

Has anybody else found a source for such a thing and a fairly easy efficient install for running the hard line up the tower? Similar to the neat arrangement we all see on commercial installs such as cell sites, etc.

I can go with the old standby of 33 tape, black ties wraps etc. however if possible I would like to install the clamping material to hold the hard line securely in place as it goes up the tower and be done with it.

Thanks Charles K5OF


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