[TowerTalk] Fwd: Need install a BRAKE to protect antenna and rotator...

[Hans Hammarquist]

You need a stronger U-clamp.


In one way the U-clamp works as a mechanical fuse. You don't want that too strong as you can break the rotor (rotator). I think "better a coax or so that the rotor.".


Just my dime.


Hans - N2JFS



-----Original Message-----
From: Douglas Ruz / CO8DM <co8dm at frcuba.co.cu>
To: 'TT' <towertalk at contesting.com>
Sent: Fri, Apr 1, 2016 11:40 pm
Subject: [TowerTalk] Need install a BRAKE to protect antenna and rotator...

Hi,

I installed a modify spiderbeam few days ago. Spreaders are 7m long because
I added 2 elem (shortened) on 40m.

Few days ago, during a windy day, both U bolts with saddle clamps in the
rotator fail...the antenna mast (aluminum tube) rotate inside the saddle and
broke both coax cables.

I quickly tie a pipe between the center hub and one leg of to tower until I
find a solution.

Maybe I need a Brake mechanism to protect the rotator. Some kind of
mechanism to operate with a rope from the bottom of tower.

It is very interesting...the center hub is connected with an U bolt with
saddle clamp to the alum mast...I think strong winds will turn the center
hub, so, I need protect the center hub too.

Any idea ?

Thanks,

Doug, CO8DM

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