"Gary" wrote in message
...
Kb2sin wrote:
Im looking for mounting ideas for the top section of a rohn 45G to be
used
solely on a roof ontop of a home. any idea on how I can mount this
monstrosity with out guy wires? Please email
thanks and 73's
de kb2sin
I once mounted a section of Rohn 25G on my roof. The house was two-story
with a one-story garage. I built a platform out of 2X pressure treated
lumber and sat the platfrom straddling the ridgeline of the garage. Inside
the garage I spanned several rafters with 2X and ran long bolts through the
platform, through the roof, and through the spans thereby securing the
platform to the garage roof. I drilled holes in the platform to match the
25G legs and fastened the 25G section to the platform with U-bolts. I then
installed a Rohn house bracket on the side of the two-story portion of the
house and clamped the tower section into the house bracket. I put a 10-foot
piece of high tensile mast in the tower and mounted a 24-element 432 Yagi,
small tri-bander, and 5-element vertical beam for 2 FM.
The guy who made the initial post also needs to know that there are
roof-mounted towers. They consist of spread tripod legs; mount with bolts
going through the roof, lumber in the roof spanning several rafters/trusses,
and gobs of roofing tar.
Check out these roof-mounted towers:
http://www.glenmartin.com/industrial/pg17.htm
---
Joe S.
This reminds me of the Yugo I saw last year parked at the hamfest. It
had 16 antennas attached in various ways, had the passenger seat removed
so he could stack his radios, and had a huge hole in the side for the
coax., neatly plugged by the way with clear caulking. Classy.
Assuming your house is constructed of steel i-beams, just weld the base
of the tower into the steel roof truss and you should be good to go. If
you have a traditionally constructed home of wood, brick, and plaster,
then just go ahead and file a claim with your homeowners insurance,
indicating the cause as owner stupidity. It will save time on the claim
when the tower crashes through your bedroom ceiling at 3 am and pins you
under the ceiling fan.