That matches my experience with my ground mounted vertical pretty closely.
And thanks to Al for the K2KW link... 73, Frank
----- Original Message -----
From: Jim Brannigan <jbrannig@optonline.net>
To: <writelog@contesting.com>
Sent: Monday, June 11, 2001 7:11 PM
Subject: Re: [WriteLog] SO2R contesting question
>
> I have been fooling around with ground mounted verticals for years (and
> dipoles and Yagis)
> The view that they "radiate in all directions poorly" is generally
true....
> Ground conductivity is crucial. In this area we have hardpan , rocks and
> clay over sand....all manner of radials did not do the job.
> but, with that said, I have had some luck with a 1/4 wavelength on
> 40M....higher freqs. require getting it up in the air, but a dipole will
> work better.
> my 2cents
> Jim
>
>
> >
> > Frank,
> >
> > Check out http://www.k2kw.com for info on how to use verticals. The
issue
> > isn't really the band, its ground loss. thats why verticals are poor on
> the
> > ground, a little better on the roof, and hugely better sitting on the
> beach.
> > I was part of the 4M7X group and I know first hand how good verticals
can
> be
> > if installed on a salt marsh. From the reports I've heard, our signal on
> > 10meters was just as loud as the 6/6/6 stations even with our simple
> > verticals.
> >
> > For SO2R, a roof mounted vertical can be an excellent 2nd radio antenna,
> but
> > don't expect it to be as good as a small yagi... especially from
Brooklyn
> ;-)
> >
> > 73, Al AD6E
> >
> >
> >
> >
> > In a message dated 6/10/2001 20:05:26 Pacific Daylight Time,
> > flgrossman@earthlink.net writes:
> >
> > >
> > > Off topic comment on the back yard vertical issue...
> > >
> > > Ground mounted verticals just don't really work for 20 Mtrs and up.
I
> read
> > > on some newsgroup eons ago that the physics of the antenna means it
> won't
> > > radiate much above 10 MHz. I've had a back yard vertical--admittedly
> with
> > > ground rods but no radials--for almost 30 years and it's performed
> > > reasonably well on 40 (worked 9G0ARS in one call on 7002 this
evening),
> but
> > > replaced it with dipoles for 20 and up early on.
> > >
> > > You think operating form a small urban lot you own is tough for
DX'ing
> and
> > > contesting--try a rented apartment in Brooklyn. :-)
> > >
> > > 73,
> > > Frank
>
>
>
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