Date: Sat, 27 Feb 2010 06:36:49 -0500
From: Pete Smith <firstname.lastname@example.org>
Subject: [TowerTalk] Rotator loops
I notice that typical ham rotator loops involve an unsupported loop that
is perpendicular to the mast, and attached at top and bottom. It seems
to me that this means a lot of flexing through 360 degrees, and in the
wind. I have also noticed that TV station remote trucks seem to use
another solution for their rotating dishes - they wrap a few turns of
coax loosely around the mast, so that a one-turn rotation only slightly
loosens or tightens the wrap. Seems like this would be a better, more
durable practice for ham installations too.
73, Pete N4ZR
## It does work.. and very well too. The usual procedure is to mount the
lowest yagi a little higher up the mast though. IE: 2-3' instead of the usual
## using that method you can actually use coax that is very rigid, like
LMR-600. I have see cases where LMR-1200 was used in
the same fashion.... 3 x wraps around the mast, 3' in diam.
They both rotated just fine.
later.... Jim VE7RF
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