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" <email@example.com>
To: "'RICHARD BOYD'" <firstname.lastname@example.org>; <email@example.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.
> ... 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.
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