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Old March 12th 06, 11:44 PM posted to rec.radio.amateur.antenna
Roy Lewallen
 
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Default Radiation Resistance

Richard Harrison wrote:
Owen Duffy wrote:
"Is that for uniform current as Reg asked?"

Reg described a short vertical wire above a perfect ground.

Without a capacitive hat or some such device, you have an open circuit
at the tip of the antenna (zero current) and a finite current at the
driven end of the wire. How would the current be uniform end to end?


For the answer to that, open your Kraus again, and go to the beginning
of the chapter (5) you quoted from. It's explained in the first
paragraph. There's even a picture, Fig. 5-1.

Roy Lewallen, W7EL
 
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