[WARC] antenna modeling result.

[Leslie Hittner]

Clare,

Sounding more interesting every time you discuss it. I have some
questions:

What is the half-power beam width on 80, 40, and 20 meters (main
lobes)?

What are the reactive components of the impedance on each of
those bands?

Is that 250 feet on a leg?

How does the gain/beam width of thge main lobe vary with the
angle between the legs?

How does the impedance vary on, say, 80 meters with a change in
angle?

-Les

----- Original Message ----- 
From: "Clare Jarvis" <clarej at hbci.com>
To: "Winona Amateur Radio Club general discussion"
<warc at lists.w0ne.org>
Sent: Monday, May 21, 2007 10:08 PM
Subject: [WARC] antenna modeling result.


> I have modeled a v-beam that uses aprox 500 feet of wire but
has 7.93dBd of
> gain at 14.22 MHz.   The front to back ratio is 1:1 and the
take off angel is
> 20 degrees.   If anybody is interested I can show nice plots
of gains and
> take-off angles.
>
> BTW this model has significant gain on both 40 and 80 meters
but is quite
> reactive.  If someone would like to work on how to feed it on
these other
> bands then we should be able to lighjt up both the left and
right coast on
> three bands.   This antenna should be easy to erect.
>
> 73 Clare
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