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Old March 10th 04, 07:51 PM
Cecil Moore
 
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Reg Edwards wrote:
Its the voltage parts of the antenna which do the radiating.

That is proved by cutting off the top part of the antenna and replacing it
with a top hat which has a much larger capacitance so it radiates the power
harder.


Reg, let's say we have an elevated antenna system where the radial system
and top hat system are identical and balanced. Energy flows back and
forth between the radials and top hat. Very little energy is radiated
from either the top hat or the radials since they are balanced. Virtually
all of the radiated energy comes from the high-current vertical portion
of the antenna.

Such antennas are described in Appendix II - Short Ground-Mounted Verticals
in _Building_and_Using_Baluns_and_Ununs_ by Jerry Sevick, w2fmi.
--
73, Cecil http://www.qsl.net/w5dxp



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