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With a 110 uH coil it takes 4.2 pF to resonate at 7.4 MHz. and 1.4 pF to resonate at 12.9 MHz. That is a difference of 2.8 pF which is not much. One way to get to the bottom of this is to short

My batch file is for 64 bit systems only. Try manually copying TeeChart5.ocx to C:\WINDOWS\system32 Then run TLW3.exe Roger

Hello Roger, I have a PC with Windows 7 Pro SP1 32bit (German). C:\windows\SysWOW64 does not exist on my OS, and your batch file reports an error. On my 2 other Win10 64bit PCs TLW3 works ok after

What I wanted to do is not working. I have an Excel sheet that allows me from the S11 of an antenna to determine its L and C near the resonance by pressing the curve of a plug to pass through two

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

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

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

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

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.