I have the 17 foot GM Tower. It is very strong! I modified mine by ordering a
custom rotor shelf that mounts at about the 10 foot level, which puts the rotor
at a much better position than the 30 inches or so from the top.
I have a F12 C4SXL on top with no problems.
I also put two, 6 foot - 2 by 6 in boards across my rafters and used 18 inch
threaded rod to mount by tower base. The 2 boards spread the load rather well.
My garage was built in the 1960's with pretty hefty wood so it is solid. It has
not moved in over a year.
I am very careful when I climb the tower (yes, use a harness) and inspect all
base bolts before doing so...
Greg
k0pj/9
Wisconsin
-----Original Message-----
From: K7LXC@aol.com
Sent: Dec 1, 2005 12:17 PM
To: towertalk@contesting.com, cary18@pacbell.net
Subject: Re: [TowerTalk] Brand new and appreciate help---Glen Martin tower &
more..
In a message dated 11/29/2005 6:48:20 P.M. Pacific Standard Time,
towertalk-request@contesting.com writes:
> Just got a general license.
Congratulations! Hope you have as much fun as I have.
> Appreciate all the help that has been shown me. I want to put up a 3
element SteppIR on top of a Glen Martin 9 foot or 17 foot roof-top tower. The
tower will be going onto a one story home (60 years old) in Los
Angeles---E.I.A. 70 M.P.H. I am getting a Yaesu G 1000 SDX rotator. I have
been told it's
a good (very good) idea to guy the tower. I also have an Icom 756 Pro2.
Thanks everyone for any and all help....73.....Cary KI6BMM
I've installed a bunch of the GME 9-footers and they're great. The one
thing I do is to use all-thread thru backing 2x4's in the attic. GME wants you
to use lag screws screwed into a roof joist - it's not very practical and
depends on the lag screw for holding power. By using backing plates in the
attic and all-thread you spread the forces over a much larger area of your
roof
than the lag screws.
(For anyone quibbling about my violation of the LXC Prime Directive to
"DO what the manufacturer says", this comes under the heading of "Improvements
and Over-Engineering".)
I'd suggest that the much larger overturning moment from the 17-footer
wouldn't be worth the small increase of wavelength-above-ground height of the
antenna.
Cheers,
Steve K7LXC
TOWER TECH
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
_______________________________________________
TowerTalk mailing list
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http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
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