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

[bob finger]

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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