John,
I have such a device.
Check 'Glen Martin Engineering', http://www.glenmartin.com/. They make an
apparatus called a Hazer that rides on a track and allows raising and
lowering of the antenna. Lowering or raising necessitates dropping of guy
wires to allow passage and then reattaching. There is some degree of
annoyance with such a procedure but does make for much easier service once
done. It is surprising how adept one becomes at this chore over time. One
more disadvantage, makes it difficult to stack more than one antenna if not
on the same mast. I have actually succeeded in stacking 2 antennas both on
Hazers on the same tower.
Howard..K2HK
From: Cleeve
Subject: [Towertalk] Antenna maintenance
To: <towertalk@contesting.com>
Date: Mon, 16 Dec 2002 20:02:44 +0000
I recently visited one of the very well equipped UK hams, who has a
large acreage and several tall self supporting towers, and one guyed
tower at 110 feet.
It occurred to me, that maintenance of yagis etc. on such a tower could
prove to be difficult as one gets older, and less inclined to climb. My
question is, are there any mechanical designs, collars, tilting cradles
etc. which could be used, to support the antenna / rotor etc. which is
hauled up such a tower, for use, and then lowered down for maintenance,
and if there is, how do you avoid antenna entanglement with the tower
support guys. Finaly, if it does exist, then where is the design
information found. regards, John Cleeve. G3JVC.
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