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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