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Old July 9th 10, 02:52 PM posted to rec.radio.amateur.antenna
John Ferrell[_2_] John Ferrell[_2_] is offline
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First recorded activity by RadioBanter: May 2009
Posts: 101
Default V antenna paterns

On Wed, 7 Jul 2010 14:56:59 -0400, "Ralph Mowery"
wrote:

Over the years I have seen many patterns for horizontal dipoles and the
inverted V antennas,but do not recall seeing any V shaped patterns in the
books. That is a dipole that is supported on the ends, but sag in the
middle. I know the sag is needed to some extent because of the weight of
the wire and feedline, but what happens to the pattern if it is say 1/2
wavelength or 1/4 wavelengths at the ends and the sag in the middle is
changed. Maybe drop it a few feet, then 10, 15 and 20 feet for 80 meters.

I know that for maximum distance you usually want the high current portions
up high,but maybe it will be better as a close in or omnidirectional antenna
if the center is lowered somewhat.

My initial EZNEC models of this antenna have not encouraged me to
continue.

In addition to other issues, the pattern tends to be straight up.

I will make certain that any dipoles I put up in the future will have
the center at least as high as the ends.

OTH, I will put on my DO LIST to investigate the characteristics of
turning the antenna on its side. If the pattern merits, I will
consider the matching situation.

Very interesting!
John Ferrell W8CCW