Thank you all for the great suggestions. I will modify (correct) the TDR slides. I was fascinated to watch the TDR "work" so well with some old coax I had in my shack, and just googled TDR to see if I could understand HOW it works.
Now.. I am at about a 9th grade understanding of this VNA technology, and I should know, since I taught 9th grade Physics for ten years at the end of teaching high school physics for 41 years (then university levels).
I've looked at the Nano VNA as something that I wanted to "tame" and have had fun learning, reading, playing, and even giving a few talks PPT to local clubs and some not so local to Philadelphia. With each presentation, I learn something new from the questions that pop up.
So no, I am not keen to "record" a presentation, although most of the clubs do record an hour or more for their own membership.
So I am still learning, and maybe in a few more months will feel more comfortable with my live presentations to go out on a YOUTUBE. Confidence grows with each presentation (try teaching 9th graders physics some time).
If you have a local club that is looking for an outside speaker, and can deal with this Nano VNA as a 9th grader, I'm your guy. I am not a professional RF engineer who has worked with VNAs his whole life.
If I can introduce someone to a new tool to have in their toolbox and learn as you go, that is enough for me.
Again, I do appreciate the pros explaining to me where a slide is misleading, or simply wrong.
I like the title now: The Nano VNA: An Antenna Stethoscope
(Like the EKG tells you something about the state of health of your heart if you know how to "read" it.
A VNA is one cool gadget
73
Barry k3eui
K3euibarry@...
Barry K3EUI