[TowerTalk] Wire grounding question

Mark Robinson markrob at mindspring.com
Wed Nov 20 15:20:42 EST 2013

I have a Green Heron controller driving an M2 rotator. It uses a magnetic 
pulse encoder.

I had a red and blue wire inside a foil shield with a drain wire inside. I 
grounded the drain wire and I also grounded the blue wire. I did this at the 
top of the tower, at the bottom of the tower and where the cable enters my 

I connected MOV's between the grounded blue wire and the red wire at the 
base of the tower and where the cable enters my shack.  I have had no issues 
with this set up

Mark N1UK

----- Original Message ----- 
From: "Ray Benny" <rayn6vr at cableone.net>
To: "TowerTalk" <TowerTalk at contesting.com>
Sent: Wednesday, 20 November, 2013 2:08 AM
Subject: [TowerTalk] Wire grounding question

>I am using a K7NV prop-pitch rotator for my almost completed tower project.
> For the encoder (magnetic pulse counter) that is mounted inside the PP
> motor, I am using a 2 pair small wire cable that has an aluminum foil
> shield and ground wire. I will be installing a lightning arrestor at the
> base of the tower for these two conductors.
> My question, should I ground this foil shield or leave it floating at both
> ends (PP rotator and rotator control box)? I would think that it should be
> grounded, but does it matter?  Any consequences if I do or don't?
> Ray,
> N6VR
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