[TowerTalk] Hygain pushup masts for 80m verticals?

["Rob Atkinson, K5UJ" <k5uj@hotmail.com>]

Hi Neal,

If you are writing about the mast that's aluminum, 65 feet tall and uses 11 
six foot sections, I'd avoid it myself.  The bottom is 2" o.d. and this 
tapers down to around .6" at the top.  Personally, I do not like the idea of 
11 sections (too rickety), and I don't like the idea of all of them being 
held by friction with hose clamps.  All that plus it being aluminum and my 
feeling is that you'll be guying a wet noodle.   Steel mast is bad enough at 
that height but at least it has enough rigidity to be guyable.   If you want 
60 feet cheap, the best height/dollar way I know of is to get one of those 
50 foot steel pushup masts and put it on an insulator and use some sort of 
stainless steel whip on top to get the last 9 or 10 feet.  You'll have to 
guy it and you'll need help putting it up but if you do it right it should 
stay up.  The aluminum mast may be another story.

Another way is to get 4 used sections of rohn 20 or 25, stack them and go 
the last 20 feet with an aluminum tube from Penninger Radio.   This is 
actually better except that you have to figure out how to insulate the tower 
base and prevent a reaction between the aluminum and the zinc galv. on the 
top tower section.   You'll have to guy the tower part at its top.

73,

rob / k5uj

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