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Rudy Severns often has some useful input on this sort of thing: https://rudys.typepad.com/files/some-notes-on-measuring-tower-resonances.pdf

Don't know of any reason why it wouldn't work. However ... I'm guessing the wire vertical is NOT grounded at the base of it, but the tower is? That may have some effect on it. Maybe if you could test

This thread had me thinking and wondering if anyone has successfully determined the resonant frequency of a tower using a Nano? At a friend's recommendation I constructed a 1' x 2' loop and this

Even imaginary numbers have units. This seems to be 0.644 of in_phase A/D full scale + 0.0532 of quadrature A/D full scale. SherpaDoug, WA1UWP

Many thanks! I now understand it just means "(644/1000) + (53.2/1000)", just as in milliNumber nothing more than that thus the "644m + 53.2m" notation is totally appropriate, IMHO. -- Thanks Again!

Hello Ho-Ro, Thank you very much for this great improvement of your nanoVNA menu-map program :-) I am working with MacOS Mojave, and tried it now with Python 3.9. The files ui.c and plot.c are from

Now available on GitHub: https://github.com/Ho-Ro/NanoVNA-D/raw/NanoVNA-H-noSD/parse_menu.py

m - milli u - micro M - mega G - giga And so on Re Im value - just complex number 644m + 53.2mj = 0.644 + 0.0532j

Additional: Re Im - base measured value All other values calculated from it

Greetings, Not that I have any real need to know but I am just curious what the "m" abbreviation stands for in the raw data example of "644m + 53.2m"? Does it happen to represent milliVolts RMS,

Base Smitch diagram value: Re Im https://en.wikipedia.org/wiki/Smith_chart#/media/File:Smith_chart_explanation.svg Also Re Im more universal for S11 and S21 some (so i use it as default) R+jX

The chart setting defaults to the value it was set to at the last Save (for a given slot), so you can set it the way you like.

Then the menu parser doesn't make sense at all. It is a development tool living in my local source code git repository that is a fork from DiSlord's GitHub. But nevertheless, I made some code

This begs the question: Why does the Nano Smith chart default to Re Im, rather than R + jX? It appears to me that Re Im is pretty useless. - John

Hello Tom, I noticed the format change just after I sent the post:-( However the frequency difference was what caught my eye and I got "blind sided". I agree with your comment, however, given other

yeah, quick and dirty often doesn't have extensive checking... on my environment, if I don't have ui.c, it gives me this: documents jimlux$ python parsenanomenu.py Traceback (most recent call last):

Hello Jim, Thank you for the hint. It works now. 73, Rudi DL5FA

Worked fine for me.. I copied the python into a file, did a git clone: git clone https://github.com/DiSlord/NanoVNA-D.git copied ui.c into the directory with the python, and ran it. It works just

No Hello Ho-Ro, Thank you for providing the useful python3 program. I have tried it, and it stops at the line: with open( 'ui.c' ) as ui: Could you please deliver the missing python code to make it

what error message are you getting? Is the file ui.c in the directory you're running the python in? That's just a vanilla python file open call.