Re: [TenTec] New and Improved Terminology (NVIS origins)

["N4PY2" <n4py2@earthlink.net>]

That's true.  But the best solution is to use raised radials a few feet 
above the ground (I used 10 feet).  Just 3 raised radials has been show to 
make the antenna as efficient as 10 to 30 ground radials.  And you don't 
have all the work of burying the radials.
Carl Moreschi N4PY
121 Little Bell Drive
Hays, NC 28635
www.n4py.com


----- Original Message ----- 
From: "Rick - NJ0IP / DJ0IP" <Rick@DJ0IP.de>
To: "'N4PY2'" <n4py2@earthlink.net>; "'Discussion of Ten-Tec Equipment'" 
<tentec@contesting.com>
Sent: Thursday, January 06, 2011 11:14 AM
Subject: RE: [TenTec] New and Improved Terminology (NVIS origins)


> Carl, although you statement is perfectly correct, it can mislead one to
> believe that the vertical dipole depends "as much" on the ground as the
> quarter wave vertical does, and that is way way wrong.
>
> The normal vertical MUST have a good ground in the form of radials and the
> vertical dipole must not.
> However, the earth below it affects both antennas.
>
> Lay down 100 radials for a normal vertical and you will see a radical
> improvement of performance.
> That same radial farm under your vertical dipole will help but the
> difference is nowhere near so great.
>
> 73
> Rick
>
>
> -----Original Message-----
> From: tentec-bounces@contesting.com [mailto:tentec-bounces@contesting.com]
> On Behalf Of N4PY2
> Sent: Thursday, January 06, 2011 8:17 AM
> To: Discussion of Ten-Tec Equipment
> Subject: Re: [TenTec] New and Improved Terminology (NVIS origins)
>
> The vertical dipole was about 5 feet above the ground at the bottom.  The
> vertical dipole was 66 feet long.  All vertical antennas require some kind
> of ground plane to be efficient, even vertical dipoles.
>
>
> Carl Moreschi N4PY
> 121 Little Bell Drive
> Hays, NC 28635
> www.n4py.com
>
>
> ----- Original Message ----- 
> From: "Ken Brown" <ken.d.brown@hawaiiantel.net>
> To: "N4PY2" <n4py2@earthlink.net>; "Discussion of Ten-Tec Equipment"
> <tentec@contesting.com>
> Sent: Wednesday, January 05, 2011 11:14 PM
> Subject: Re: [TenTec] New and Improved Terminology (NVIS origins)
>
>
> > > Years ago I had a vertical dipole for 40 meters and a raised vertical
> > > with 3
> > > radials 10 feet above the ground.  The raised vertical was about 6 DB
> > > better
> > > than the vertical dipole for European stations.  The raised vertical was
> > > 10
> > > feet off the ground at the bottom with 3 full size radials (33 feet
> > > long).
> > > I like raised verticals.
> > How high above ground was the dipole? How long was the dipole? A half
> > wavelength?
> >
> > DE N6KB
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