[TowerTalk] Best mast location?

[Gene Smar]

Fred:

     The 18 sqft rating of the tower is probably based on having the antenna 
load no more than 2 feet above the top of the tower.  Check the tower 
manufacturer's specs for the derivation of this figure.  Assuming that is 
the case, you would be overloading your TX455 by mounting the Yagi at seven 
feet up the mast.

     You also ought to be aware of the wind speed for which the tower is 
rated at 18 sqft.  It might be only at 50 mph winds.

     Caveat Amateur!


73 de
Gene Smar  AD3F


----- Original Message ----- 
From: "Fredric T. Serota" <fserota at msn.com>
To: <towertalk at contesting.com>
Sent: Wednesday, May 12, 2010 1:53 PM
Subject: [TowerTalk] Best mast location?


> Have a 55 ft tower rated at 18 sq ft (TX 455) a 15 ft mast and a 150 LB -
> 17 sqft multiband beam (SteppIR DB36). Question is how far up the mast
> should I mount the antenna? Would like to get to at least a half wave over
> ground for 40 meters (60-62 ft) or 7 foot of mast.
>
>
>
> Fred K3BHX
>
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