But why "ground" the end of a bare buried radial that's already buried in
the ground?? Probably be more effective to just soak the area with Calcium
Chloride or something!
A radial network of elevated resonant radials is NOT a "non-resonant
counter-poise". In fact an 80m 1/4 wave vertical or a 160m inverted L each
with a few elevated resonant radials are just a "ground-plane" antennas, for
Pete's sake! And its properties are well known and documented and have been
for
decades! (but some people much prefer "dirt"!)
"If you believe- no proof is necessary. If you don't believe - no proof is
possible"! FWIW
73,
Charlie, K4OTV
-----Original Message-----
From: Topband [mailto:topband-bounces@contesting.com] On Behalf Of Bob
Eldridge
Sent: Saturday, January 25, 2014 6:53 PM
To: topband@contesting.com
Subject: Topband: grounding the ends of radials
> 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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