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Re: [TowerTalk] How to get another 10' in height? Add a mast or add anot

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Subject: Re: [TowerTalk] How to get another 10' in height? Add a mast or add another section?
From: bob finger <>
Date: Tue, 10 Jan 2012 06:14:48 -0500
List-post: <">>
John:  The extra ten foot section of 45 will be MUCH stronger than any 
mast you can put up there......I don't have the Dave Leeson book handy 
as I write this, but memory tells me the 45 section will be like 3 times 
stronger than a mast, assuming you don't go higher than Rohn specifies 
for a free standing tower ie about 30 feet above the top guy.  I have a 
rotating tower just as you describe.  I did put a mast in the top 2 
sections (belt and suspenders approach) by buying 2 rotor plates and 
using Rohn 2" mast clamps from an HBX tower on the bearings and locked 
the mast so it will not turn.  (same hole pattern as a TB3).  My common 
boom 2 el 30 2 el 40 sits 17 feet above the top guy ring, with a BIG 
yagi just above the top guy ring.   73 bob de w9ge
John W wrote:

> which one is the safer/better installation:  adding a mast that protrudes 10' 
> above the top of the tower (and for some distance down into the tower), or 
> adding another 10' section and sidemounting the new antenna at the top of it?

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