> 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
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Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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