[TowerTalk] Re: TowerTalk Digest, Vol 9, Issue 38

["Howard Klein" <howk2@hotmail.com>]

Date: Thu, 11 Sep 2003 07:38:49 -0400
From: "Bryan Rambo" <bryanr@bometals.com>
To: <towertalk@contesting.com>
Subject: RE: [TowerTalk] Short Booms

Howard and all,

I was just about ready to order a pair of those 4el SteppIR yagis when I
read on their web page that the 32ft boom was only 1-3/4 inch diameter.
Yikes!  My KT-34XA has a 32ft x 3in boom and I don't think it could manage
with less.  Granted, the SteppIR boom has a bit more wall thickness - but
wall thickness just can't make up for lack in diameter (if you believe the
moment formulas in my old college statics textbook).

Howard: After putting two of those beauties up, what do you think of that
skinny boom ???

73 - Bryan W4WMT

Bryan,
I had the same feeling when I first looked at them lying on the ground. For 
those who aren't familiar with the antenna it has a 32 ft long boom. 
However, with the boom support in place, the trusses hold them in good 
position and there does not appear to be undue stress or movement (they are 
perfectly straight) on the tower. The proof will be coming up this winter. I 
suspect it will ride it out without problem. Possibly the engineers  may 
feel differently. My feeling is subjective based on my history. If not there 
is a three year warantee :-).
Howard..K2HK

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