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The resistive (R) term in a complex impedance R +/- jX is not necessarily frequency independent. Both R and jX can change in some complex impedance loads. An example is an antenna operating at either

Hello again Rich; To answer your question directly, neither R1 nor Rj is correct. The variable being changed in the Measure menu referred to as R1 defines the characteristic impedance (a complex R +

Hello, New owner of a NanoVNA-H4. I'm trying to use NanoVNA saver but haven't been successfully at getting chart data that looks like everyone else's, with generally continuous lines. Mine are all

Hello, New owner of a NanoVNA-H4. I'm trying to use NanoVNA saver but haven't been successfully at getting chart data that looks like everyone else's, with generally continuous lines. Mine are all

Has anyone built Owen's app from source on Linux? 73 Stan KM4HQE

Found this out today on Owen Duffy's blog... "DiSlord NanoVNA-D v1.1 firmware supports a scan_bin command where bit 3 of the outmask field is used to request raw measurement data, ie uncorrected

I’d like to shed some light on a technique which has worked well, at least for me. I use an SAA-2N that I got from R&L Electronics about 3-years ago. At the time, they were reported as selling

The purpose of PORT Z 50 -> XX is to set the "reference impedance" to XX. Important: You still must calibrate using a 50 ohm load!! If I set XX to 75 ohms the origin of the Smith Chart will now be 75

What about NanoVna2? How is this handled there NanoVnaV2 has an own group, so this is only a note that is may interest others too.

No, but thanks for taking the time! I am working on documenting the nVNA, and trying to find an explanation for each menu item that seems like it needs an explanation. Please see my next port. ~R~

So here are some of the issues. 1. This feature (I guess) is described on the published menu as DISPLAY-> PORT Z 50 -> XX, but no such feature exists on my device. 2. PORT Z 50 -> XX is described

And the R1 setting lets you change the internal calculations of the nanoVNA to use a value other than 50 for the nominal impedance, e.g. 75 + j0, which for many cases works as expected. Note that it

Most things "RF" deal with a 50 ± j0 ohm system impedance. The exception is the TV industry who go with 75-ohms. All the NANOVNAs and the TinySA are designed for and present pretty much a system

I follow the suggestion of calibrating at the min and max frequencies that the NanoVNA can handle (save to S0) then perform additional calibrations over the frequency ranges of interest, saving those

The paper being referenced needs to be interpreted carefully.. The S11 measurement limits were based on measurements taken with a Copper Mountain Technologies S5065 VNA which can measure from 9 kHz to

That's most useful thing - it says "which setup should I use"..

I think the question is more about getting consistent calibration - One might turn the NanoVNA on and off, for instance, in the course of a day on the same test

I see this on both devices, and would like to know how to use it. I also see Rj = 50 ohms, and I wonder if these are confused with one another. ~R~

Another quick note of thanks...I have been reading that page. I have more questions :-) but will research them, I'm sure. I note in the doc you attached that little omega came through where big omega

Thanks for this comment. I went to the Copper Mt site, and it sent me to