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Randy, if the program proves helpful for your students, that would be just great. I didn't set out to write an s-parameter plotter. I wrote a little utility to renormalize the s-parameter reference

Computer Results: Remember maybe four or five decades ago (man, its been that long!) when all the computer "Yagi Design" applications hit hams with stars in the eyes? Some were good, some were

Hi, Brian, This looks really good to me. Very crisp and sharp lines. Using Gwenview under Kubuntu here in case it matters. 73, Maynard W6PAP

Hi, have I ever mentioned that to be a difference ? yes, one has SMA, the other has solder joints. Both have had the same balun (obviously) what triangles and what "groundplane" would those be ?

Wow, I love spirograph art, so cool! :-) Really looking forward to your updated program to show students in my EM courses how it should be done. Using a Smith Chart program along with the equations

Thanks, Dean. The S22 Smith plot is available. I've attached one that looks like abstract art. I was just curious whether I was gilding the lily. The program includes a utility to merge two .s2p files

Brian, S22 is also useful and a Smith chart presentation would be desirable. But this would have less priority because the nanovna does not have the capability to measure it. Plus, you can always

This is just a test plot. I noticed that the 1024 x 768 plots I posted earlier were not exactly reproduced. They are slightly fuzzy and colors are a bit off. Let's see how well this this 800 x 600

Well, I'm getting there. So many pesky details. I find Smith plots fascinating. It's hard to resist the urge to post dozens of really strange and interesting curves. I hope I don't become an

home made antenna is with ONE sma connector (no balun added) while factory made has a wilkinson splitter and two cablesz factory antenna has a triangle "groundplane" (while homemade has not) ... so

Hello, Homemade BLUE bowtie antenna vs factory made BLACK whole board with the same bowtie antenna. Over 300 - 330 MHz range I am seeing some ~20 change in reactance with the home made antenna and ~50

Is the Nanovna connected? Nanovna-app doesn't sweep until you press the start sweep button, did you do that?

I downloaded the Nano VNA App from the website. And tonight I tried to use it unsuccessfully. I had connected the vna to my laptop > selected com port 1 for the usb, and didn't get a response

While in colledge I took a computational physics class and was assigned a matrix with fractions such 1/3, 1/7 to evaluate three ways by long hand pencil and paper, with a handheld calculator, and

From an educational aspect it would be useful to have the option of displaying gamma - maybe a separate selection option to display either SWR and frequency or impedance and gamma? Dave, ZL3FJ

When you calibrate the Nano (on device calibration) in the range as the documentation suggests 0-900MHz with 401 points and then calibrate using the NanoVNA Saver in the same range using, for example,

The Smith chart, of course, can be replaced by any of many software packages that yield just numerical results, but not the feel for what's going on. One may be really happy with incorrect numbers

Good. The less clutter the better. So far I display frequency and SWR. Impedance is just about ready to test. I will have to add the upside-down ohms symbol to my homebrew fonts when I do admittance.

Hi Brian, With regards to the marker, I can offer an opinion. I rarely used the raw reflection coefficient directly. I was looking to find a return loss, VSWR, or impedance, all of which would require

Do you refer to Phillip Smith's original paper? DaveD KC0WJN [email protected]> wrote: