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Old June 11th 10, 10:49 PM posted to rec.radio.amateur.antenna
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First recorded activity by RadioBanter: Aug 2006
Posts: 572
Default Where does it go? (mismatched power)

On Jun 11, 4:29*pm, K1TTT wrote:
what is an 'impedor' in this context?


Hopefully, the same IEEE Dictionary definition as any other context:
"impedor - a device, the purpose of which is to introduce impedance
into an electric circuit." Note that it has a material existence.

the ieee dictionary qualifiers of dissipative and non-dissipative seem
adequate to me. *no need to make up any other terms or qualifiers.


OK, I will change "virtual impedance" to "non-dissipative impedance"
although if the resistance is zero, that still doesn't solve the
semantic problem. The word "virtual" as used by Walter Maxwell over
the past half-century conveys the meaning as well as any other words,
IMO.

The fact remains that a dissipative impedor is something that exists
in the material world and can cause an outcome. A non-dissipative
impedance is a *result* of a superposed V/I ratio, not a cause of
anything.

Roy once challenged me to detect the difference between a 50 ohm
antenna and a 50 ohm dummy load. I said, "Simple, use a field strength
meter."
--
73, Cecil, w5dxp.com


 
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