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Re: [TowerTalk] Station Ground

To: "Michael Tope" <>, <>,"Frank Donovan" <>
Subject: Re: [TowerTalk] Station Ground
From: "Tom Rauch" <>
Reply-to: Tom Rauch <>
Date: Sat, 15 Jan 2005 07:55:44 -0500
List-post: <>
> > 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 you build your station to code or use common sense on
external cable and power entry that will never be a major

> > 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

That's generally NOT how it works. The path isn't a loop
from one piece of equipment to another via a ground buss
connection, it's generally from the improperly installed
antenna feedlines to a power line or telco ground through
the equipment.

The station ground should be neither for RF or lightning. It
should be for safety.

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

Not true at all. There are many paths between equipment in a
typical station. That's why a good low resistance ground
buss is generally a very distinct advantage.

73 Tom


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