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Jim, You don't have to calibrate In NanoVNA saver if the NanoVNA is calibrated and you are using the same frequency range in Saver. Roger

It is my understanding that you need to do both. The best suggestion I have seen is to do a broadband calibration and store it in memory 0. You definitely have to calibrate in NanoVNA Saver.

…The S11 phase as displayed on the nanoVNA screen and the voltage vs current phase in the DUT… are they related? Yes. Are they the same thing? No. It seems many make the mistake of thinking that

Thanks for the link, and the hard work you've done on the firmware. 73!

And here is another link for a very good TDR app note from Agilent: https://www.testunlimited.com/pdf/an/5989-5723en.pdf

I came across an Introduction to Network Analysis presentation by Keysight that I thought those new to the VNA might be interested in reading. It covers Transmission lines, S parameters, Smith Chart,

Yes, every cable damage/connectors provide signal reflection and you can see it on TDR Better search info about Time Domain Reflectometry (TDR) for example:

When using NANO Saver, the cal files can be stored on the PC/laptop, not in the NANO. You can store them permanently on the PC and access them for future use by just reloading them, provided

I know this is a wee bit off topic DiSlord, but could you tell me something? Is it normal to see a bit of a bump where you have a SO239/PL259? What does a normal trace look like for a typical RG8X

On nanovna-saver/README.md at master · NanoVNA-Saver/nanovna-saver · GitHub <https://github.com/NanoVNA-Saver/nanovna-saver/blob/master/README.md> I have read that the calibration has to be done for

I'll give it a try Thank You

This related to points count, old fw have 101 points and use 256 FFT. Now used 401 points, and 512 FFT Also added amplitude compensation (for 256 FFT need use 256 points, for 101 points all others

I read somewhere that if you use the nanoVNA alone you MUST calibrate on it, whereas if you use it attached to nanoVNA-saver, you MUST calibrate on the computer software.

Well, couldn't edit the other post so I'm adding this one. I think I figured it out, you have to change the sweep points to 101 or 201.

Do I need to do both? I only did the nanovna calibrate

Just wondering, something seems different with the TDR workings in the latest firmware. In the 0.5.0 fw if you set the frequency to 100 MHz you had your max cable length on the right side was close to

Is WHAT related?

"Things can be explained simply and clearly if one chooses to do so . Often times, I find it's best to only use as much complexity as is necessary to sufficiently convey one's thoughts." That's

Karl Jan, My SAA-2N measures about -12dBm at 8MHz CW, but the signal pulses on and off during the sweep. (It is -12dBm during the on times, measured with an HP8563E SA.) I am using the Ojisan version

For swr plot you can use the value of 6:1 each side of center freq. Find those 2 values of freq, find their difference and divide into the center freq to get operating Q. If you double that value,