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Re: [TowerTalk] Station grounding in a steel enclosure?

To: towertalk@contesting.com
Subject: Re: [TowerTalk] Station grounding in a steel enclosure?
From: "Roger (K8RI) on TT" <K8RI-on-TowerTalk@tm.net>
Date: Sun, 28 Aug 2016 03:34:23 -0400
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
CME? EMP?

73

Roger (K8RI)

On 8/28/2016 Sunday 3:24 AM, Jim Brown wrote:
Trent,

The larger question is why you need a Faraday cage in the first place. Few stations do. What most stations need is proper BONDING, proper grounding, proper power, and proper interconnections between equipment. Study http://k9yc.com/GroundingAndAudio.pdf

73, Jim K9YC

For On Sat,8/27/2016 10:28 PM, trentkd5ia--- via TowerTalk wrote:
My remote station is approaching completion. A 70' tower, wireless internet, solar power and RemoteRig with a TS480 is all operational. Still in progress are the antennas to be mounted, and lightning protection. I have a question about grounding. The electronics are housed in a valve box--a galvanized steel cylinder 5 feet in diameter and 4 feet tall, with 3 1/2 feet of that in the ground. A removable steel lid covers it. All cables are in PVC pipe and enter the housing under ground level, and the valve box is 12 feet from the base of the tower.

The grounding system will consist of 9 ground rods, 3 connected to each leg of the tower and extending out from the tower. The valve box will also be connected to the grounding system. Polyphasers will protect against surges.

My question is, can I install the surge protectors inside the steel housing, or should they be mounted outside the valve box? I'm thinking that the steel cylinder possibly acts as a Faraday cage, and the grounding connection and surge protection should be attached on the outside wall of the housing. Any comments or suggestions, please?

Thanks!

Trent K5XM on the windy and lightning prone West Texas plains


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