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Re: [TowerTalk] Reduced guy radius for Rohn 45G tower

Subject: Re: [TowerTalk] Reduced guy radius for Rohn 45G tower
Date: Thu, 23 Aug 2012 08:21:32 -0400 (EDT)
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I've put up a lot of 45 and 55.  45 is good stuff but I wouldn't get  any 
closer than 70% of the height, which really limits the height.  The 45  if it 
is in good shape should fetch $120-$130.  I'd put that toward a 60/70  self 
supporter which would give you a nice tower in a small area.
In a message dated 8/23/2012 1:33:33 A.M. Eastern Daylight Time, writes:

Pardon  me if this is a dumb question for my first post to this list, but
this is  my first real tower after many years in Amateur Radio.

I came across a  great deal on a lightly used Rohn 45G:  six sections
plus a top  section.  The problem is that my lot is not really big enough
for the  56 foot guy anchor radius recommended in the Rohn brochure.  I
am  looking for suggestions as to what I can do to make this smaller. 
For  example, I could put up just a few of these sections with no guys. 
The  Rohn 45G self-supporting tower brochure has a table for 90MPH (which
I  understand is required for my jurisdiction, although radial ice is
not),  but this only allows 30 feet height with 4 sq.ft.  This is  smaller
than I would prefer, which is nominally about 10 sq.ft., but the  Rohn
brochure puts me at only 20 ft. height for 11 sq. ft.  So, what  can I do
with these tower sections to get more than 30' height and 10  sq.ft. in a
radius less than about 20 ft.?  Would it help to use three  sections as
elevated guy anchors?  This would leave me three sections  plus the top
for 3x10 + 8 - 4 = 34'.  How do I determine the wind load  allowance for
this configuration?

Or, would you recommend I just  resell the 45G and buy a genuine
self-supporting  tower?

Avery,  WB4RTP


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