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And please remember resonance is not necessarily at 1:1 SWR. It may or may not be. Resonance is *defined* by (consult the complex portion of the measured impedance): +jX = -jX. The resistance term is

In my Excel file, it is not about calibration but about measurements. The calibration has been done and has been corrected /g/nanovna-users/message/29103 The calibration file shows

I seldom calibrate the VNA with nanosaver, so really cannot tell how that one works out for me. Nor is my VNA (Now a H4.3) the same as F1AMM's. So I cannot compare. (I read somewhere that Fran?ois

Hello Here is the test I did Measurements on a loop antenna at a distance of 50 m (zero reagent around 7.100 MHz) between 1 and 20 MHz (1010 steps or 10 segments) made with a nanaoVNA-F and

why not just calibrate at the cable end?? much easier as messing with the long delay ... not?!? dg9bfc sigi ps did you check open and short (with cable!!)?!?!? Am 01.08.2022 um 14:40 schrieb Diane

I agree with you. Using edelay to de-embed a coaxial cable is not a good idea if impedance measurements are the goal. The attenuation of the cable affects the measurement. Things get worse the higher

Hello, Thanks, everyone for your tips. Finally, this is what I've done. Best regards

Hello, Thanks for your reply. I am using a quarter wavelength antenna. Best regards

You should better calibrate at the cable end and NOT on the vna.. No circles anymore!! Nothing to compensate via edelay.. I only use edelay to compensate say an sma to n adaptor.. But not to

Hello Roger, Thanks for reminding me, I will post on the other topic how I went about correcting the electronic delay introduced by the SMA cable. My cable was too long to correct the electronic delay

** No, the "clicks" are never in the same place. We will say, to simplify, that it is parasites that cause this. We find the same thing in the .S1p files but it's less troublesome. If I want data

Hello Francois, What if you slightly change the frequency range and/or number of segments? Are the errors still at the same frequency? Good work you are doing by trying to make it clear! All the best,

** Hello I am posting an example. The calibration file (.cal) corresponds to the end of a 50 m coaxial cable (50 Ω). The frequency sweep range is 1 to 20 Mhz in 20 segments. Follows the description

What Stan said. It appears that the nanovna is doing a "mean average". In statistics, the N number of samples are examined to find the largest and smallest, or other measure of outlier, values which

Fran?ois, It would be helpful if you described the specific frequency span you are using, the number of segments, and the frequencies where the "errors" occur. If there is some sort of bug in the

The NanoVNA makes multiple sweeps, and NanoVNA-Saver averages them. One thing to remember is that if the sweep is >101 points, it's actually multiple sweeps strung together. I do not know. Maybe it's

I have a NanoVNA H version 3.5 software 1.0.64, kernel 4.0.0 I need to check where the bump is. It does not happen always... When i see it again, I will report. All the best, Victor Op vr 29 jul. 2022

Which nano and which firmware? Do different nano-types or firmware versions make a difference? On my old nano (H3.2) I had a bump around 6 MHz, but it was a known errror. Arie PA3A

I also see sometimes these 'clicks' coming at the same frequency in the measured results. But after a recalibration they are most of the times gone.But they indeed happen, why I don't understand. I

Hello I didn't understand the meaning of: - Number of measurements to average - Number to discard - Common values ??are 3/0, 5/5, 9/4 and 25/6 1/ Could you explain to me what you understand about