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[Towertalk] Tower and rotator for Force12 C3 antenna

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Subject: [Towertalk] Tower and rotator for Force12 C3 antenna
From: (Jim Smith)
Date: Sun, 28 Jul 2002 21:42:21 -0700

Roof mount installations can be noisy due to rotor brake noise.

I have a roof mounted tower with an old TH3 tribander and Ham-M rotor. 
 Whenever I turn the TH3 when my wife is in bed the clanking of the 
brakes wake her up.  If I do it too often I get a phone call from her 
suggesting that it would be a REALLY GOOD IDEA if I stopped turning that 
damn thing.  This is very damaging to contest scores.  I recently put up 
a temporary 6&2m beam on a piece of 10 ft conduit right over the bedroom 
(it's a flat roof).  I turned it with a recently purchased AlfaSPID 
rotor.  It has no brakes, it uses a double worm drive.  You can't hear 
it at all in the bedroom when starting, rotating, or stopping.  When my 
C4SXL arrives, the TH3 and Ham-M come down and the C4 and SPID go up. 
 Check it out at

Hope this is of interest to you.

73 de Jim Smith    VE7FO

The Linn's wrote:

>I have a Force12 C3 antenna and am currently trying to decide on the right 
>tower and rotator.  I would like to use the smaller roof mount tower because 
>it would be easier to maintain the antenna and rotator.  

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