Hi Rich,
Don't forget that you must use a massive concrete base for a self-supporting
tower. With the amount of land you have, it would be far cheaper and easier
to use guys!
73!
Frank
W3LPL
donovanf@erols.com
----- Original Message -----
From: RICHARD BOYD <ke3q@msn.com>
To: <towertalk@contesting.com>; Joe Subich, K4IK <k4ik@subich.com>
Sent: Friday, January 14, 2005 12:00 AM
Subject: Re: [TowerTalk] unguyed heights for Rohn 65 etc.?
> Okay, it looks, then, as if Rohn 65 would do the job at 50' but wouldn't
be
> enough at 60' -- unguyed. I would guess that Rohn 80 would have a little
> more capability, being huskier.
>
> Even putting one guy set on the tower should greatly increase its
> capability -- I'll have to think about the aesthetic and footprint
tradeoffs
> versus the other options.
>
> 73 - Rich, Ke3Q
>
>
> ----- Original Message -----
> From: "Joe Subich, K4IK" <k4ik@subich.com>
> To: "'RICHARD BOYD'" <ke3q@msn.com>; <towertalk@contesting.com>
> Sent: Thursday, January 13, 2005 10:59 PM
> Subject: RE: [TowerTalk] unguyed heights for Rohn 65 etc.?
>
>
> >
> >
> > > Anyone have an idea (or facts) how high I could go unguyed
> > > with Rohn 65, assuming a single 48' boom monobander for 20,
> > > or 15, or 10 (plus appropriate rotator, and I'll have the
> > > yagi right above the tower, shortest mast possible within
> > > reason)?
> >
> > The Rohn Commercial Catalog (11993) gives the following
> > allowable antenna areas for Rohn 65 at 80 MPH (Prince Georges
> > Co. is 75 MPH zone):
> >
> >
> > Ht. no ice 1/2" ice
> >
> > 50' 19.7 19.1
> > 60' 9.4 4.1
> >
> > Note 3: Designs assume two 7/8" lines on each tower face.
> > (nb: 7/8" line is .0875 sq. ft. per lineal foot)
> >
> > > Okay, let me toss out another possibility: Rohn 80 (I know
> > > it comes in various sub-models, some 40" face, some 44" face
> > > and there may be other differences, but assume the basic or
> > > the typical one).
> >
> > No chart in my book for Rohn 80 free standing. "Each tower
> > is individually engineered to handle a particular job."
> >
> > Rohn 80 is 41" center-to-center on the legs however the legs
> > vary from 2" to 3" in standard (schedule 40?) and X-STR
> > (schedule 80?). Rohn 80 has both standard (zig-zag) and
> > cross braced sections.
> >
> > 73,
> >
> > ... Joe, K4IK
> >
> >
> >
> _______________________________________________
>
> See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any
questions and ask for Sherman, W2FLA.
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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