"christofire" wrote in message
...
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?
It makes one wonder how they "stumbled" onto these designs without a
knowledge of equalibrium and coriolis.
I can already see Art's reply- how do you know they did not take these into
account?
My only answer is- because you're the only one that does.
Dale W4OP