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?
73,
Avery, WB4RTP
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