Dr. Gerald N. Johnson wrote:
>>
>> As Jerry points out, there are some amongst us who believe that a tuner at
>> the antenna feed point tunes the antenna wire to resonance. It does not.
>>
>
> Why not? The tuner can supply the needed series capacitive reactance to
> bring the feed impedance resistive. Isn't a resistive feed impedance (no
> matter what the magnitude) the definition of resonance? And when that
> antenna is resonant, isn't the current in the wire maximized? Isn't
> there a possibility of greater circulating current than feedline
> current, if the antenna Q is higher.
>
Jerry,
Mischievously ....... I just tried an interesting experiment. I took a
100 Ohm resistor in series with a 100pF capacitor and placed them across
the "antenna" terminals of my tuner. I watched them carefully as I
adjusted the tuner for a 50 Ohm match. At no time did I see any change
in the physical appearance of the resistor or capacitor, so I don't see
how the tuner was making them "resonant". I was disappointed - I'd hoped
from your description I might see them "morph" into a 50 Ohm resistor
before my very eyes :)
73,
Steve G3TXQ
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