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Hi Fran?ois Here is the .s1p file for a range of 1 to 20MHz. -- Mike G8GYW

Roger I compared both methods of calibration, which I refer to as "screws" and "crocs". At around 72kHz, where the reactance is approximately 50R, both calibration methods give an inductance of 108uH.

That is a very old version of NanoVNA Saver, download the latest version and try again.

Could you post your .s1p file in shunt on port 0. I would like to reger something. Have you noticed that when you connect a coil or a trap (finally a dipole) by a single leg on port 0 (the other leg

Attachments : - your smoothed file - the processing log (.CSV) showing the anomalies detected. - the S21 Group Delay (ns) on the smoothed file 73 -- F1AMM Fran?ois De la part de astech119 Envoyé :

That's it, we have converged. In my application where I am looking for an equality between a value obtained by scanning and a target value, the distance between between the two points (in the complex

Thanks for the info. I do NOT use usc-c to usb-c cables. I use the standard original usb-a to usb-c. Can you provide a link for the latest DiSLord code? Thanks Fred

I had a similar problem when I had a bad cable or a bad port connection. Try a different cable, or a different port on the computer. Don't use a usb-c to usb-c cable, use a usb-a port on your

R. A. Chipman, in "Schaum's Outline Series - Theory and Problems of Transmission Lines," McGraw-Hill, 1968, points out that when a lossy transmission line has Zo complex, minimum reflection from the

I forgot to mention that the nano 2.8 hardware is on some old software. My H4 software is also old 1.0.64. It was installed May 31 2021 Fred

My Nano H4 is on a DiSlord version 1.0.64

On Mon, Jun 26, 2023 at 05:25 PM, Roger Need wrote: > Calibrating with the crocodile clips will not give you a good reference plane. > The reason I say this is if you keep them the same distance apart

What code version(s) are on the NanoVNA's?

I am confused. A friend of mine and I are trying to figure out why *my nano H4 and his very early nano vna with the 2.8" screen will both run on his nano saver 0.3.7.* His 2.8 nano runs on my computer

Indeed.. For instance if Z1 = 2 - 1000j and Z2 is 50 + 100j, then gamma = (Z1-Z2)/(Z1+Z2) gamma = 1.215 - 0.124j |gamma| > 1 (and it's not some sort of numerical precision th

Here it is, thanks for taking a minute to look into it.

can you send as attachment your .s2p file I wrote a little software to smooth out the errors. I would see what happens. -- F1AMM Fran?ois De la part de astech119 Envoyé : lundi 26 juin 2023 18:32

We have a little trouble understanding each other. It is not a question of measurement but of calculation. I have an adapter which for a given input impedance returns the impedance Zout =

I'm measuring the group delay of some 60in cables with a NanoVNAH4 and I am getting outliers in the data. I am using nano-vna saver and I have tried both with on board calibration disabled and

Calibrating with the crocodile clips will not give you a good reference plane. The reason I say this is if you keep them the same distance apart when you cal with an open, short and load you will have