Yuri Blanarovich wrote:
Reg Says:
Knowledge of the current distribution along a loading coil has no practical
use except to assist with drawing pictures of it in books and magazines.
WROOOONG!
Have you ever tried antenna shootouts? Cecil can enlighten you about the
difference in efficiency and signal levels radiated by various configurations
(bottom, center, top loading).
The efficiency is proportional to the AREA under the current curve on the
loaded radiator. That is dependent on the position of the loading element
within the radiator. That also depends on the current distribution (drop :-)
across the coil. Use that in the loaded parasitic element beams and the effect
is magnified.
So obvious, but hard to swallow for Rauchians?
Viva Bush!!! Sayonara sKerry botoxed flipflopping lying girlie man.
Yuri, K3BU.us
If you're really interested in the "AREA under the current curve,"
you'll have to figure out how to make an efficient, continuously loaded,
short antenna. You'll find, though, that the difference between a
continuously loaded antenna and an antenna with the loading coil,
say, halfway up from the feedpoint won't amount to a hill of beans.
There's still no such thing as a "current drop."
73,
Tom Donaly, KA6RUH
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