On Tue, Jan 21, 2014 at 10:40 PM, Charlie Cunningham <
charlie-cunningham@nc.rr.com> 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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