September 8th 09, 12:00 PM
posted to rec.radio.amateur.antenna
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external usenet poster
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First recorded activity by RadioBanter: Oct 2008
Posts: 173
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The ultimate tilted monopole
"Sal M. Onella" wrote in message
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"christofire" wrote in message
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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?
Such a design also appears as a self-supporting HF receive antenna the
Navy
mounted on the forward gun mount. I
struggled to find a picture of a ship with one showing but no luck. The
elements were about five to seven feet long and arranged as the OP
describes.
USS Missouri http://www.kh6bb.org/photos2.html
Chris
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