>
> An amateur could get away with wo or three points ... If I were that
> concerned, I'd pick four points: 1 mile/1 km N, E, S & W of the
> antenna.
In addition, one could start with a reference - say 4 radials take a
set of measurements, add four more and take a set of measurements,
add eight more and take a set of measurements, etc. until one sees
the point of diminishing returns (increased field strength) from
adding the radials.
Not only would that answer "how many are enough?" in one's specific
location, it would provide a baseline for "how much deterioration"
over time.
73,
... Joe, W4TV
On 2022-12-02 11:37 AM, Joe Subich, W4TV wrote:
On 2022-12-02 11:01 AM, Jorge Diez - CX6VM wrote:
> how can you measure that a radial system is still good over the years?
Do like the (LF/MF) broadcasters (or at least what they used to do) ...
measure field strength at several few points when the antenna/radial
system is new, then measure at the same points every year or two.
An amateur could get away with wo or three points ... If I were that
concerned, I'd pick four points: 1 mile/1 km N, E, S & W of the
antenna.
73,
... Joe, W4TV
On 2022-12-02 11:01 AM, Jorge Diez - CX6VM wrote:
OK thanks Paul
how can you measure that a radial system is still good over the years?
Maybe the cable is degraded, or is cutted in some points if animals are
around.
Is any easy way to determine that the radial system on a vertical antenna
is still good?
thanks!
Jorge
CX6VM/CW5W
El vie, 2 dic 2022 a las 12:06, Paul Christensen (<w9ac@arrl.net>)
escribió:
Jorge,
N6LF's material is based largely on measured results in support of
theory.
Paul, W9AC
-----Original Message-----
From: TowerTalk <towertalk-bounces@contesting.com> On Behalf Of Jorge
Diez - CX6VM
Sent: Friday, December 2, 2022 9:57 AM
To: Paul Christensen <w9ac@arrl.net>
Cc: Ignacy Misztal <no9e@arrl.net>; tower and HF Antenna Construction
Topics. <towertalk@contesting.com>
Subject: Re: [TowerTalk] 16om vertical and the number of radials
I think Paul wants to know the "real" situation, not theory. He want to
know if the theory is 100% in accordance with real big stations with
many
radials on the antennas
73,
Jorge
CX6VM/CW5W
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