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Old September 8th 09, 12:44 AM posted to rec.radio.amateur.antenna
christofire christofire is offline
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First recorded activity by RadioBanter: Oct 2008
Posts: 173
Default The ultimate tilted monopole

In the words of the great Basil Fawlty "you'll like this one"!

It appears to be believed, by one or two who frequent this NG, that a tilted
monopole provides more gain and somehow 'better' EM radiation than a
vertical one. However, we've seen that tilting a vertical monopole distorts
its radiation pattern so it is no longer truly omni-directional in the
horizontal plane. Then why not create an array of such tilted monopoles,
all tilted in different directions, to restore the omni-directional pattern.

The result is a discone antenna, or a discage like the one illustrated at
http://gvarc.us/GVARCFrames/Titan/Di...ch4life002.jpg. I wonder what
the 'new-age theorists' would make of this. Does it require the Coriolis
effect to analyse it, or is the old-fashioned version provided by
Schellkunoff & Friis(#) still adequate?

Chris


# Schellkunoff, S.A., and Friis, H.T. Antennas, theory and practice. John
Wiley & Sons Inc., New York, 1952. pp 104 to 106.



.... and if that isn't enough, how about the Racal Antennas 'Difan'
http://www.racalantennas.com/product...45-30mhz.aspx?