That wouldn't be a ground wave. It would be a sea wave the size of which
might depend on the tides?
73, Mike N4NT
----- Original Message -----
From: "tongaloa" <tongaloa@alltel.net>
To: <tentec@contesting.com>
Sent: Friday, January 09, 2004 2:23 PM
Subject: Re: [TenTec] Off topic: Paul's wire loop antenna report ground wave
> Curious.
> How did you distinguish ground wave from other modes at 100 miles over
> salt water.
> 73,
> -Bob
> ah7i
>
> Stuart Rohre wrote:
>
> >Paul, Ground Wave not there above 3 MHz? It is there, in fact an antenna
we
> >developed here at the research lab did Ground wave near 10m band out to
100
> >miles! That was with the Folded Conical Helical invented by Dr. Robert
L.
> >Rogers and team, which they call the FLEX antenna. We also did it with
some
> >helical 10m ham sticks, and with a half wave 10m antenna, (vertical).
This
> >was done over salt water. Ground wave exists for all frequencies. It is
> >what works your simplex modes at 2m, etc.
> >
> >There are noise issues at one frequency vs. others, but ground wave on HF
is
> >very useable. Incidentally, our testing was at 5 Watts Pactor II.
> >73,
> >Stuart Rohre
> >K5KVH
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