In a message dated 7/23/2002 9:29:04 AM Pacific Daylight Time, K7GCO writes:
> Mauri: Why don't you try a Horizontal Quad Loop? It already has a couple
> dB gain over a dipole and a higher feedpoint Z which lowers the feedpoint
> losses. If its .1-.15 WL high it has additonal ground reflector gain.
> Higher than this the ground reflector gain drops off. Put it in Eznec and
> look at it. k7gco
>
> In a message dated 7/23/2002 6:57:27 AM Pacific Daylight Time, i4jmy@iol.it
> writes:
> >> 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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