[TowerTalk] rotor control cable and the bulkhead....?

David Gilbert xdavid at cis-broadband.com
Mon Jul 7 15:33:38 EDT 2008

Or these from Array Solutions, which also include a capacitor across 
each MOV.


By the way, I use one of these at the top of the tower near the rotator 
and another at the entrance to the shack.  You need to protect both the 
rotator and the controller, and the inductance of the cable will hinder 
a single suppressor from protecting both ends of the line from induced 

Personally, I've found that the cleanest way to attach the wires to the 
surge protector is to use short pigtails with a spade lug terminal on 
the end, and then use a wire nut (well taped, of course) to attach the 
pigtails to the two rotator cable wires (one going to the shack, one 
going to the rotator).  It's the same method commonly used for 
electrical sockets and switches in houses  ... except for the spade lug ;)

Dave   AB7E

Chad WE9V wrote:
> I also prefer the Polyphaser products, but just to give you another
> alternative, see the ICE products:
> http://www.iceradioproducts.com/impulse2.html#4
> And for those of us who still like to homebrew and/or save some money,
> if you look at the I.C.E. datasheet, it pretty much spells out what
> device they are using.  A MOV (metal oxide varistor) with 50VAC,
> 66VDC, 4.5KA peak current.  A quick look at Digikey shows a similar
> MOV for $4.23 for quantity 10.  See
> http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail?name=P7216-ND
>  I purchased a ton of these along with an old fashioned barrier
> terminal strip, connected one end of the MOV to the barrier strip, the
> other end to a buss bar connected to station ground (my metal bulkhead
> station entrance) via a very short lead.
> 73,
> Chad WE9V
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