[TenTec] Off topic: Paul's wire loop antenna report ground wave

[Rob Atkinson, K5UJ]

Paul, you'd better flood your property with salt water, put up a 1/2 wave 
helical thingy, operate pactor and enjoy your 5 watt "ground wave" on 2 
meters.  I'd like for someone to please explain to me why TV and FM 
broadcast stations on VHF put their antennas up 1000 feet or more if they 
have a ground wave to work with, and why they disappear into the noise when 
I drive away over the horizon from them.  Where's their ground wave?

Cheers,

Rob/K5UJ


From: "Stuart Rohre" <rohre at arlut.utexas.edu>
To: <tentec at contesting.com>
CC: <k5uj at hotmail.com>
Subject: Re: [TenTec] Off topic:  Paul's wire loop antenna report ground 
wave
Date: Thu, 8 Jan 2004 18:56:19 -0600

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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