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Old June 2nd 05, 03:25 AM
Jerry Martes
 
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"Hal Rosser" wrote in message
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Hal

It surprises me to read that you consider the Smith Chart difficult to
use. I'd bet that you could figure out how to use one to your benefit
within 20 minutes of asking questions of someone who uses them.

Jerry


Jerry,
You're probably right. I could probably lean how in an afternoon.
I sat down with one I printed out once, and thought I had it figured out.
Then when I needed to use it again, I would need to be retrained.
I remember how to use an MFJ259 from use to use, though. :-)

I just don't have the patience - it just doesn't grab my attention like a
gizmo does.



Hal

First off -- I realize that you are eperienced enough with antenna
analysis to know what is needed for matching them. And, if you did want to
use a Smith Chart, you'd have done it by now. I wont embarrass myself by
telling you anything I know about them. But, they sure can help identify
what kind of impedance is needed for a matching network.
Any impedance with a real resistive value can be plotted on the chart.
Then, its location immediately identifies what reactance will move the
unmatched impedance toward a matched location. I think you already knew
that. I also think you could teach me how to look at matching devices from
a more practical perspective.

Jerry



 
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