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Re: Nano VNA: An Antenna Stethoscope ( pdf file latest edition de k3eu )


 

You can all thank AJ3DI Jim, my benefactor, for introducing me to this gadget called Nano NVA.
It forced me to take another look at many concepts: resistance, reactance, impedance, PHASE, and of course, how useful (or bewildering) a Smith Chart can be.

Of course, at my PhilMont Mobile Radio club presentation (over an hour) it was recorded, and although Jim missed the first couple of (very essential) slides, the talk can be viewed by anyone.

Each time I give this talk, I learn more about what the hurdles are. I find, as a teacher, we can "say the words and answer multiple choice exams without any REAL understanding".

My goal was to slow down enough for folks to see "resonance" and "phase" like a kid swinging on a swing and grampy (our feed line) giving the essential push to keep the current (kid) swinging.
A crude analogy, of course, for resonance in an antenna.

So have fun watching the video if you choose to spend an hour that way.
I usually prepare for many more slides than I actually show (rookie error).

Feedback is apprediated: K3euibarry at gmial.com

73
Barry

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