Anybody that leaves a crankup tower up in 100mph wind potential deserves to
lose it. I guarantee you that a LM470 cranked all the way down will not be
blown down in any wind. Of course, the elements will be stripped off the
boom long before, then goes the boom.
----- Original Message -----
From: "Bob Selbrede, K6ZZ" <firstname.lastname@example.org>
Sent: Sunday, November 30, 2008 1:32 AM
Subject: [TowerTalk] LM-470 at 100 MPH
> Has anyone had the Triex LM-470 professionally evaluated for
> antenna load capacity in a 100 MPH Basic Wind Speed zone?
> Turns out our local building code will be changing on 1 Jan
> 09 to require new structures to meet the 100 MPH
> requirement. I suspect most free standing crankup towers,
> fully extended, may not handle these wind conditions
> unloaded let alone with a good size tribander on them. How
> does an 85 MPH 3 second gust rating of 18 Sq Ft look at 100
> MPH? I would estimate around 4 Sq Ft.
> 73, Bob K6ZZ
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