[Icom] Antenna Resonance Question

[Dana Hoggatt]

On Apr 18,  4:13am, sx28@juno.com wrote:
} 
} An antenna is resonant when
} a) it is 1/2 wavelength long
} b) the source resistance is exactly zero ohms
} c) the antenna is a center-fed dipole
} d) the source reactance is exactly zero ohms
} Answer______________


I think this question is going to cause some trouble.
It has an unfortunate (and hopefully inadvertent)
choice of words.

Ignoring the multiple choice, my answer would be:
"the antenna's feedpoint reactance is effectively zero".

The problems with the other answers are as follows:

A. There are plenty of 1/2 wavelength antennas that
   are not resonant.  In fact, depending upon how
   strict/exact/precise you want to be; you could
   argue that very few of these antennas are resonant.
   (what counts as length, end effect, location of
   feedpoint, etc...)

B. "source" usually refers to whatever is feeding
   the antenna; which has nothing to do with the
   antenna's resonance.

C. Not all center-fed dipoles are resonant.

D. As in B, the source has nothing to do with the
   antenna's resonance.

My guess is that you're searching for "D", but have
used the wrong terminology.  So guys, lets not jump
all over him, OK?

Now I have a question.  Why did you ask?  If you let
us know what you're trying to accomplish, then we'll
have a better idea of what information/help you need.

Dana, KB9SSS