The crossed dipoles is omni-directional but the peak radiation angle will
be straight up.
John KK9A
To: towertalk@contesting.com
Subject: Re: [TowerTalk] Fwd: Dipole gain?
From: "Joe Subich, W4TV" <lists@subich.com>
Date: Tue, 09 Dec 2014 17:59:24 -0500
Any horizontal antenna will have a direction (angle above
horizontal) with higher power density due to the combination
of direct rays and rays reflected from the ground.
The turnstile, if properly fed, will have uniform angular
radiation in the horizontal plane. Vertical "take off" angle
will depend on height above ground and the "circular" radiation
directly up will depend again on height above ground and the
ground constants.
73,
... Joe, W4TV
On 2014-12-09 5:45 PM, Hans Hammarquist via TowerTalk wrote:
Hi Jim,
The next question then is; Do two horizontal, crossed dipoles, feed 90°
out of
phase have an even power distribution across the hemisphere, horizontal
across the
horizon and circular above and below or is there a direction with a higher
power
density?
Hans - N2JFS
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