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Re: [TowerTalk] Station Ground

To: Frank Donovan <>
Subject: Re: [TowerTalk] Station Ground
From: Gary Schafer <>
Date: Fri, 14 Jan 2005 22:25:33 -0500
List-post: <>

Frank Donovan wrote:

The modern design practice is to bond all RF cables, rotator cables
and control cables to a common grounding "window" at the entry
point into the home.  All other cables (AC power, telephone,
cable TV, satellite, etc) penetrating the wall of the building
should be bonded to the grounding window.   While a heavy
ground wire could be run from the grounding window to the
station equipment bus bar and then to each station equipment,
it is likely to have such high impedance that it is highly unlikely to
perform any useful function.


With a proper "grounding window" using a buss bar to connect equipment to can actually be a detriment. It is best to run individual ground lines from each piece of equipment separately to the ground window.

With a common buss bar you have ground loops between pieces of equipment. If a surge, lightning etc. should get through to one piece of equipment it will hopefully exit via the ground to the ground window.

If there is a common buss bar the surge can enter another piece of equipment and go through it via the ground connection on it's way to ground. The ground lead from the buss bar will always have some impedance so it will be somewhat above ground with a surge.

With individual ground leads to the ground window there is no loop through other equipment. Not always doable but it is the proper way.

Gary  K4FMX


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