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[TowerTalk] TX-455 and SteppIR

To: towertalk@contesting.com
Subject: [TowerTalk] TX-455 and SteppIR
From: Aaron Mcclure <aaronm10000@comcast.net>
Date: Fri, 6 Jul 2018 09:17:23 -0700
List-post: <mailto:towertalk@contesting.com>
Hi Everyone,

I just got done pouring the base for my TX-455 and will use my Mosley 3 ele beam until I can settle on a new one.

My question is wind load of the TX-455. There does not seem to be any clear-cut specification for the tower.  The design specs list 76mph and 7.4 sqft wind load all round members or 4.2 sqft square. In the Archives I have read of people installing DB36 with 17.5 sqft wind load. This seems way over the spec and if the tower came down I assume US Towers would point to that as the failure.

I would love to install a DB18 with 10sqft so I have some more gain on 30/40 M but would happily settle for 3ele Yagi with the 30/40M dipole at 8.1sqft.  The antenna spec lists 100mph.  Is this the wind load at 100mph?  How does it translate to the feeble US Towers wind load of 7.4sqft at 76mph?   Would I be safe with the DB18 or should I be conservative with and stick with the 3 ele and dipole.

73s

-Aaron

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