[Towertalk] Rope

[Mike]

I had a 35' Rohn 25 tower that was bracketed at the 8' level.
If you run the numbers you will find this sort of installation is
good to ~150 MPH with no antennas. With a Cushcraft A3
tribander on top, the math said it was good to about 80 MPH.

73 de Mike, W4EF.............


----- Original Message -----
From: "Mark Beckwith" <swca@swbell.net>
To: <towertalk@contesting.com>
Sent: Sunday, May 05, 2002 12:05 PM
Subject: Re: [Towertalk] Rope


> W6UE has an 11-element 6 meter KLM yagi on something like a 21 foot boom
at
> 30' with the roof bracket at 9 feet = 21 exposed feet.  Been up for about
9
> years.  No problems.
>
> Nevertheless, fot the record I state clearly I am not endorsing such an
> installation and that you would do so at your own risk.
>
> I also might seem to remember seeing the 35' exposed above the house
bracket
> rule in the Rohn catalog at one time, and I think I specifically remember
> that this was for supporting a VHF vertical with no more than 2 square
feet
> of wind load.  I think the catalog specified a 50 foot tower with a house
> bracket at 15 feet = 35 feet exposed.
>
> Your Mileage Could Vary.
>
> Mark, N5OT
>
> Who is it, Dave Leeson?  who says "Experiment trumps theory"?
>
> ----- Original Message -----
> From: "Julio" <jperalta@tampabay.rr.com>
> To: <towertalk@contesting.com>
> Sent: Sunday, May 05, 2002 10:53 AM
> Subject: [Towertalk] Rope
>
>
> > I have a Rohn EF2545 gin pole and I need to replace the rope. What would
> be
> > the recommended type and size to use?
> >
> > In some of the older Rohn catalogs I think I read that Rohn 25G could be
> > self supporting at 35' above a house bracket. I don't see that
> specification
> > in the new catalogs. My intent is to install a 5 elem. M2 6m beam (
about
> 2
> > Sq Ft on an 18' boom ) just to get me by for the summer Es season. Does
> > anyone take exception with the 35' above the house bracket spec?
> >
> > Julio, W4HY
> >
> >
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> >
>
>
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