Richard Harrison wrote:
Orr says he used both the Yagi and the Quad for years as did many of his
good friends. He says objective and subjective tests show the Quad has a
definite advantage in terms of signal strength over the Yagi antenna.

It is good to remember that the Quad was invented to solve a particular
problem.

From Orr's book concerning the 4-element Yagi initially installed:

"Totally unexpected, however, was the effect of operating the high-Q
(Yagi) beam antenna in the thin evening air of Quinto. Situated at 10,000
feet altitude in the Andes, the beam antenna reacted in a strange way to
the mountain atmosphere. Gigantic corona discharges sprang full-blown from
the tips of the driven element and directors, standing out in mid-air
and burning with a wicked hiss and crackle. The heavy industrial aluminum
tubing used for the elements of the doomed beam glowed with the heat of the
arc and turned incandescent at the tips. Large molten chunks of aluminum
dropped to the ground as the inexorable fire slowly consumed the antenna."

"The corona discharges were so loud and so intense that they could be seen
and heard singing and burning a quarter-mile away from the station. The
music and programs of HCJB could be clearly heard through the quite night
air of the city as the r-f energy gave fuel to the crowns of fire clinging
to the tips of the antenna elements."

C. Moore invented the Quad beam to solve that somewhat special problem.

Quads also have all the advantages that loops enjoy over dipoles. One
thing that comes to mind is a marked reduction in static electricity due
to wind and snow because the entire loop is virtually at DC ground.
--
73, Cecil http://www.qsl.net/w5dxp



-----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
-----== Over 100,000 Newsgroups - 19 Different Servers! =-----