To radiate "straight up efficiently" I don't think anything outperforms a
dipole placed .15-.25 WL from a good ground.
73,
Mauri I4JMY
----- Original Message -----
From: "Pete Smith" <n4zr@contesting.com>
To: <antennaware@contesting.com>
Sent: Tuesday, July 23, 2002 1:00 PM
Subject: Re: [Antennaware] coax monopoles and more
> At 12:43 PM 7/23/02 +0200, Maurizio Panicara wrote:
> >Independently by its peculiar high angle radiation, not every contact
needs
> >low angle radiation, an orizontal antenna close to a real ground has
large
> >losses that seriosly affect the overall efficiency.
> >Any modeling software I tried seems to under estimate those real losses.
>
> Which raises again the question of using stacked dipoles for an NVIS
> antenna, with the upper one fed and the lower one used as a
> reflector. Hypothetically, wouldn't that improve the loss situation, if
> the reflector was some distance above the ground surface?
>
>
> 73, Pete N4ZR
>
> Check out the World HF
> Contest Station Database at
> www.pvrc.org
>
>
>
>
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