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Convenience for graphical design of a matching network. There’s also sort of a qualitative thing that you recognize particular “shapes” on the chart as having particular significance. And,

If you can plot the real and imaginary parts of an S-parameter as well as magnitude, phase, and SWR, what additional information does a Smith chart provide? Is the advantage that you get SWR and

Jon,Look in the group files section. Lots of user information there.? Yahoo Mail: Search, Organize, Conquer On Sat, Apr 26, 2025 at 6:37 PM, W0LEV via groups.io<davearea51a@...>

No, it does not. However, there are several publications out that instruct one on using the NANOVNAs. Once you learn the basics, that should map over to any VNA, professional or NANO. Dave -

After working with Smith charts for awhile, and understanding them - they provide in one 'glance' a visualization of the complex impedance across frequency, at the same time as a visualization of the

Yes, and if you let the PC do all the optimization work, what have you learned? Not much other than how to use the PC for the applications. Rectangular plots vs. frequency, Bode plots, give you

I never intended to add a Smith chart to my S-parameter plotter. I can appreciate how useful they must have been before computers, but I don't see their value today. A computer program, especially one

Dave, Does the NanoVNA come with an instruction manual? I received only a menu chart, and no other booklet. 73 Jon, VU2JO [email protected]> wrote:

Yes, if your SAVER is miles outside of your intended cal range, you need to do a cal on the native device first. I've never had that problem, so I wouldn't know. I've used professional VNAs for

They did that to avoid some problems that require extra coding. And since you can do one calibration from 50kHz to 900MHz, and save it in slot 0, you never have to revisit it. The problem is that

Thanks, Stan! This is definitive and helps me understand what to expect. I'll try nanovna-app, to see what that's about. I'm a little surprised that nanovna-saver depends on the H4's calibration

From the nanovna-saver github readme (https://github.com/NanoVNA-Saver/nanovna-saver): Quote: Calibration Before using NanoVNA-Saver, please ensure that the device itself is in a reasonable

And thank you, Stan, for your feedback! 73, Dean W8ZF

Thanks Dave, So if the H4 internal cal is *independent* of the nanovna-saver cal, exactly what are you clearing with nanovna-saver's "clear all cals"and when would that be necessary? I ALWAYS either

No. They are independent. Dave - W?LEV [email protected]> wrote:

Dave, correct information, but you did not address his real question: Is the nanovna-saver 0.4.0 calibration dependent on the nanovna internal cal? I was taught (back a couple of years ago) that

QUOTE: ........ but what happens when the sweep range is different for nanovna-saver than the H4's stored cal? Are results invalid, or are they interpolated (assuming nanovna-saver is sweeping in a

Thanks for the replies. There seems to be some disagreement on #2. Appparently for some versions (maybe all), the cal in nanavna-saver IS dependent on the H4 being in a calibrated state before the

QUOTE: 1) What is the persistence of calibration done through nanovna-saver? I.e., does it persist if the USB cord is disconnected and the H4 is taken for mobile measurements? Any cal done within

#2 is correct. The calibration done in nanovna-saver is solely in the computer. It can't be saved to a slot in the nanovna, partly because -saver has more sweep-point options. You need to do the