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Old August 15th 06, 11:38 PM posted to rec.radio.amateur.antenna
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Default Physically short stubs, was: QFH Antenna and 72ohm TV Coax

On Tue, 15 Aug 2006 13:57:12 GMT, Cecil Moore
wrote:


X=-j600*cot(130.2)=j507.7


507.7? Says who?

Me and two of my friends, Mr Hewlett and Mr Packard.

Thanks very much, Owen. I used the Smith chart to get 85, 130,
and 500 above. That's about as good an accuracy as I ever need.
Also MicroSmith says the impedance value is j507.2 ohms.


I am surprised that Microsmith has accumulated so much error (~0.1%)
after so few operations.

Owen
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