[TowerTalk] Tilting over an MA-770 or MA-850

Dino Darling dino at kx6d.com
Thu Dec 26 09:13:55 EST 2013


What is the half length of your longest element? Can the beam be turned
90 degrees?

Does the antenna HAVE to come down all the way? Can it stay at 32'?

Could a tilt-plate solve your issue?

To answer your question, or as the engineer said in Red October, "105%
possible, but not recommended." The side load on all the tower sections
would make raising it difficult. If you used a motorized winch, you
wouldn't be able to feel the extra stress on the lift system. I don't
like the idea!

Dino - KX6D
 
 
-------- Original Message --------
Subject: [TowerTalk] Tilting over an MA-770 or MA-850
From: ko7ss at yahoo.com
Date: Thu, December 26, 2013 5:34 am
To: "towertalk at contesting.com" <towertalk at contesting.com>

A house I am looking at has a slightly peaked roof that is 32' high at
the peak,
but the roof has a 6' overhang (picture a log cabin where the roof
sticks out 6' 
in front and in back of the house).

For a whole bunch of reasons, a crank up mast has to sit 13' from the
wall of
the house. The mast is only 23' retracted, so that is fine. But the
maximum
boom length would be limited to 12', so that the mast could be extended
and
easily clear the overhang.

So, if I wanted a longer boom, say 18', and I had the tilt over MARB/MAF
base set up properly, could I tilt the tower maybe 5-10 degrees, extend
it
10', return it to upright, and then continue to extend it to full
height?

Thanks, Bill KO7AA  in Tucson
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