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Topband: grounding the ends of radials

To: <topband@contesting.com>
Subject: Topband: grounding the ends of radials
From: "Bob Eldridge" <eldridge@direct.ca>
Reply-to: Bob Eldridge <r.c.eldridge@ieee.org>
Date: Sat, 25 Jan 2014 15:53:15 -0800
List-post: <topband@contesting.com">mailto:topband@contesting.com>
but if it was done with a ground rod that's not really much of a "ground"
for rf.
 It isn't there to "provide a ground". It is there to intercept "return"
rf, which "flows" not far below the surface.  So a "ground spike" is a more
appropriate term.  "Ground rods" are good for safety purposes.
 Yes, I am assuming insulated wire laid on or near the surface.  But
grounding the far end of buried bare radials doesn't do any harm.

A single ground rod at the base of a vertical isn't going to provide much
of a ground.
 True. But a ring of short grounding spikes, connected together and back to
the base (U.S. Army
tactical grounding system), provides a reasonable alternative to a metal
plate.

The radial network is a non-resonant counterpoise.
 Sometimes, but not always.

Bob VE7BS


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