It shouldnt be too hard for some to install a wire mesh of plastic coated
rabbit fencing below the antenna, after a few months the grass will grow
well past it allowing mowing.
I did a variation at another home in the 80's when 60+ on ground radials
didnt perform as expected using a 100' shunt fed tower with stacked
monobanders. Adding four 4' x 50' mesh strips over the radials and
connecting into them made a huge difference.
Carl
KM1H
----- Original Message -----
From: "Guy Olinger K2AV" <[email protected]>
To: "Charlie Cunningham" <[email protected]>
Cc: "Mike Waters" <[email protected]>; "topband List"
<[email protected]>
Sent: Tuesday, January 21, 2014 11:32 PM
Subject: Re: Topband: Anyone purchased the ARRL book on Short
Antennasfor160???
On Tue, Jan 21, 2014 at 10:40 PM, Charlie Cunningham <
[email protected]> wrote:
There's been a lot of work done in the broadcast
industry using elevated radials to replace deteriorated buried radial
fields
that shows that pretty clearly. It was published in some IEEE
transactions
some years ago.
Be careful not to extrapolate very specifically qualified broadcast
experience into ham radio. Originally FCC spec radials still make the
close
foreground earth appear VERY conductive, which is NOT an advantage one
will
have putting up two or four radials over plain old dirt, unless one is
talking about midwest USA 30 millisiemen super dirt.
I have yet to hear about a ham who had 120 buried bare radials underneath
his two raised radials. A ham is talking about two or four raised over
plain dirt. Two or four over ugly North Carolina 2 millisiemen will be
down, though one will need comparison RBN plots watching an entire 160
contest to see it. It's not so far down though that you won't work happy
DX
with it, but there is a power loss.
73, Guy.
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