I had 9 foot Glen Martin roof tower on my single story house in Iowa for
10years. I used a 10 foot heavy duty mast
(with thrust bearing at top). I had a Force 12 C4 about 6 feet above the top
of the tower, a scanner antenna at the
top and a 6M, 2M, 440 combo beam about 2 feet above the top of the tower.
I re-enforced the roof with 2 by 10s going across the roof beams on the
underside and ran 12 inch long 3/8 inch
stainless threaded stock through with bolts on the roof, below the roof, and
top/bottom of the re-enforcing wood. I
used plenty of silicon caulk and never had a leak.
I never had a problem (structurely or mechanically). 50-60+ mph wind storms
were common. The antenna worked
fine on all bands even though I was about 80 feet below the hills to my east
and west. If I heard it, I could work it.
I cheated and used a sign company to install the antenna and take it down when
I moved. I may be considering a
similar set up here but would probably go with the SteppIR beam.
On 17 Jul 2006 at 10:36, email@example.com wrote:
> Well the wife finally admitted she really doesnt want a full sized tower up.
> BUT, we compromised with a Roof Top. So Im looking at the pros/cons of the
> glen martin or any other brands. Im thinking the 8 or 9 footer.
> How far above can I get a mast. Im on a single story ranch and that wont get
> me 1/4 wave on 20m. Can I add some mast ????
> Scotty W7PSK.
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