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Old January 30th 05, 07:20 PM
Cecil Moore
 
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Ed wrote:
What characteristics would a 1/2 wave dipole have if one side was near
vertical, and the other side buried along the ground? Would it act like a
poorly counterpoised groundplane vertical, or something else? Any
redeeming qualities?


When two radials are 180 degrees apart and elevated, they tend
to cancel the radiation from each other. When you bury one
radial, you ensure that ~half your RF energy is lost. If you
bury that one radial vertically, you do indeed lose half your
signal since you have put half of your dipole underground.
Ground mounted verticals give up approximately half their
power to ground losses. Then they give up approximately another
3 dB to a rotatable dipole. Approximately 10 ohms of the feedpoint
impedance for mobile antennas is ground losses. (Please note that
everything I said is approximate. :-)
--
73, Cecil http://www.qsl.net/w5dxp


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