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Re: [TowerTalk] Wire grounding question

To: "Mark Robinson" <markrob@mindspring.com>, "Ray Benny" <rayn6vr@cableone.net>, "TowerTalk" <TowerTalk@contesting.com>
Subject: Re: [TowerTalk] Wire grounding question
From: "Mark Robinson" <markrob@mindspring.com>
Date: Wed, 20 Nov 2013 15:22:18 -0500
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
oh  I forgot

I did this at the
top of the tower, at the bottom of the tower and where the cable enters my shack.


I also grounded the blue wire and shield at the back of the Green Heron box inside the shack


Mark N1UK



----- Original Message ----- From: "Mark Robinson" <markrob@mindspring.com> To: "Ray Benny" <rayn6vr@cableone.net>; "TowerTalk" <TowerTalk@contesting.com>
Sent: Wednesday, 20 November, 2013 3:20 PM
Subject: Re: [TowerTalk] Wire grounding question


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 shack.

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@cableone.net>
To: "TowerTalk" <TowerTalk@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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