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[Towertalk] Calculating guy distance for rotating towers

To: <towertalk@contesting.com>
Subject: [Towertalk] Calculating guy distance for rotating towers
From: n2mg@eham.net (Mike Gilmer, N2MG)
Date: Fri, 11 Oct 2002 07:04:06 -0400
I disagree.  If you push the guy out from the tower by one foot at the spot
where the boom would otherwise hit it,
you've added one foot to the clearance.

To push it 1 foot away at the example's 60-foot height, the anchor moves 5
feet away.

Mike N2MG

> Adding 1' to the boom does not give 1' of guy clearance unless the guy
runs
> straight up and down.  Guy clearance should be measured perpendicular to
the
> guy. In this case for 1' of clearance the guy would be at a 29 degree
angle
> and the anchor would be 136' from the base of the tower.
>
> John

> ----- Original Message -----
> From: "Mike Gilmer, N2MG" <n2mg@eham.net>
> To: "towertalk" <towertalk@contesting.com>
> Cc: <kr7o@vhfdx.com>

> <SNIP>
> > This makes guy anchor distance x = 125' for zero clearance.  To get 1
foot
> > of clearance we change the 25' turning radius to 26' and get: 130'  Then
> > there's ground irregularities and guy wire sag so you may opt for more
> > minimum clearance.  Lower the antenna 5 feet and the 1-foot clearance
anchor
> > spacing is only 98 feet  Big difference.  Of course, if you have the
room
> > and the EHS...








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