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[Towertalk] Antenna Wind Area Calculation

To: <towertalk@contesting.com>
Subject: [Towertalk] Antenna Wind Area Calculation
From: rhackler@mindspring.com (Roger Hackler)
Date: Thu, 21 Nov 2002 11:55:12 -0500
Hey TTers:

I'm in the process of calculating the required tower windload rating I need
to consider when purchasing a new tower.  This will be a simple
installation, probably in the 50' range.  Due to XYL RFI, freestanding is
the option available, and I want to be sure I select a tower that will cover
my planned antenna load, with room for future expansion possibly.

Planned antennas include my old trusty KT-34, which has a 6 square foot wind
area according to the original documentation.  I am planning to upgrade it
to the M2 version before I hang it, and am not sure if a wind area change
occurrs with the upgrade, but that should be easy enough to track down.  I
also plan on my Comet GP-15 Vertical, which I can find no wind area
information on, as well as my B&W folded Dipole near the top in Inverted Vee
configuration.

Initially, I plan to keep the KT-34 near the top of the tower, but would
like to have the leeway in the tower rating to add a 6 meter yagi above the
kt-34 in the future. I am in a 70 MPH county.

How do you factor in the vertical and the wires?  I realize this is probably
a dumb question, but one of the things I love about this hobby is dumb
questions are OK!

Thanks in advance!

73 de KN6RO (Formerly HL9AX in a different life :)





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