80m wire yagi info needed

Nawvemburr Zeeero Dawg House n0dh at comtch.iea.com
Fri Nov 1 12:15:19 EST 1996

Ari Korhonen wrote:
> Hi gang,
> We have plans to put up a wire yagi for 80m. If you are using one, I´d love
> to hear your ideas, comments etc, etc.
>                      Thanks, 73             Ari, OH1EH


I have a two element 80 meter beam with inverted V elements. The peak of
the Inv. V's are at 90' and they are spaced about 45' apart. When
compared to a full sized ground plane and and a Half square the beam is
about 1 s unit better  for signals closer than about 1500 KM , beyond
that the VErtical and Half square are as good or better. Also because of
the Inverted V construction the front to side is very poor.


>From ericr at access.digex.net (Eric Rosenberg)  Fri Nov  1 20:32:01 1996
From: ericr at access.digex.net (Eric Rosenberg) (Eric Rosenberg)
Date: Fri, 1 Nov 1996 15:32:01 -0500 (EST)
Subject: True North in one sentence
Message-ID: <Pine.SUN.3.94.961101152532.11826A-100000 at access2.digex.net>

When installing LEO satellite systems in countries as diverse as Indonesia
and Norway, I followed N3RR's method. 

Using a [satellite] tracking program, I determined when the sun was
exactly at 180 degrees (or in locations on/near the equator at 90 or 270
degrees, in the southern hemisphere at 0 degrees...you get the point).  At
that moment the shadow cast be the tower or mast was then marked with some
permanent marker (paint) and from that day forward I always had an
accurate reference point.

Admittedly, this may be troublesome in KL7 or other high latitude places
(I wouldn't try this in Norway between December and February or
thereabouts). In those instances, one must obviously improvise or better,
wait for the warmer climates to return (who would really *want* to install
antennas at that time of year, anyway :-)

Eric  WD3Q
Washington, DC
ericr at access.digex.net 

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