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[TowerTalk] Elementary question - trig formula

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Subject: [TowerTalk] Elementary question - trig formula
From: (Fred Hopengarten)
Date: Thu, 25 Jun 1998 22:45:52 EDT
Fred Hopengarten  K1VR               781/259-0088
Six Willarch Road
Lincoln, MA 01773-5105
permanent e-mail address:

On Thu, 25 Jun 1998 16:36:14 -0500 Thomas Johnson <> writes:
>Now, If I need MORE Phillystran to complete one last leg of my tower, 
>and my
>tower is 50Ft, and I want to guy it at 45 feet, and my Ground anchor 
>is 30 feet
>from the base of the tower, how much phillystran will I need to 
>complete the
>connection (I will add on the Few extra feet later for clamping)

K1VR:  This is a trick question, and may not be answerable from the
information available. Here's why:

        You want to have galvanized steel guy wire from a height of about
12 feet above ground to the guy anchor.  At least that's the way I like
to do it, because I don't want a vandal with a cigarette lighter to
attack my Phillystran.  But you may, for some reason, want to bring the
Phillystran lower, or higher, before switching to steel.  In addition, as
the steel guy wire can be varied in length (your system doesn't really
care whether it has steel from 10', 13', 15' above ground, or whatever),
you don't have to be very careful about how much Phillystran you use.


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