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Re: [TowerTalk] Lightning Protection for Orion Rotor

To: towertalk@contesting.com
Subject: Re: [TowerTalk] Lightning Protection for Orion Rotor
From: "Roger (K8RI) on TT" <K8RI-on-TowerTalk@tm.net>
Date: Sat, 24 Dec 2016 14:25:22 -0500
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
Oops...That should have been three strikes per summer for the first 6 years it was up although the 6th year only two were verified with no damage.

Computer Cat 5 network was something else, but in over 55 years as a ham I've never had rotator problems from lightning. Water was a different issue.

73

Roger (K8RI)

On 12/23/2016 9:41 PM, Roger (K8RI) on TT wrote:
NOTE this is not a suggestion that protection is not needed as many can attest.

Although I ground the coax at the top and bottom of the tower, I have never used any form of lightning protection on the rotator cable, or control box.

I've mentioned before that the tower was taking at least three strikes(visually verified by neighbors). Weather proofing and plating was blown off a number of connectors, but no problems for the rotator which was 10-15' down, inside the tower.

Rotator cable and coax ran together for about 175 feet.

73

Roger (K8RI)

n 12/23/2016 12:16 PM, William Saulnier wrote:
At the risk of starting yet another discussion of lightning protection in
general I do have the following specific question.

In addition to an overall sound design for grounding, etc. is there a
significant advantage to having rotor control line surge suppressors at the
top of the tower? I have read that its a good idea to ground the mast to
the tower to bypass the rotor and I was already planning to have
suppressors on the control lines at the bottom of the tower and at the
entry to the radio room. The intent would be to have better protection for
the rotor itself especially its apparently sensitive reed switch.

Thanks.
Bill N5VR
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--

73

Roger (K8RI)


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