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Hello everyone ! Is there anyone who can clarify the hardware versions? To my knowledge, the first version is that of ttrftech (edy555) https://github.com/ttrftech/NanoVNA/tree/master/doc.

What files should I use? Only DMR-CLEAR_MEMORY_DFU.dfu ? Where I find the flash-program? I would like to go around my NanoVNA 2.8"TFT with the Gecko-logo, color whide. Info Hardware: Kernel: 4.0.0

Jim, Larry pulled his original PDF document in favor of this link, /g/nanovna-users/wiki/shellcommands . Herb

What files should I use? Only DMR-CLEAR_MEMORY_DFU.dfu ? Where I find the flash-program? I would like to go around my NanoVNA 2.8"TFT with the Gecko-logo, color whide. Info Hardware: Kernel: 4.0.0

Index is the number of the point [0-100] Dumps the screen content so you can make a "screenshot" sampe [gamma|ref|ampl] select the data to be measured: gamma: amplitude / reference signal, this is

If you want to build a clone of the sdr-kits *Testboard*, and have no experience with the *2.54 mm round Female Pin Header Socket*, here a link to a cheap source: $ 1.33 for 5 x 40 pin sockets

Thanks Brian, It shows that you cannot arbitrarily use any sweep parameters, like what I did in my fist attempt (50K-300MHz). I'll be making more measurements... Paul

Thanks Larry, but I already mentioned in my post that I fully calibrated the VNA with the fixture attached.

What good does that do? Mike WY6K "... somewhere in the distance, there's a tower and a light, broadcastin' the resistance, through the rain and through the night..."

Larry, I can't find the Console Command pdf New name? Folder? Thanks, Jim, KA6TPR

maybe it is time to start using hash tags #component #measurement. first person to start a thread puts #hash #tag in the subject line

Here is some more stuff to contemplate. I "modeled" so to speak the inductor under test, the DUT, as a perfect inductor. No SRF. I added the measured fixture parasitic obtained from the "perfectly

Take a look at this: https://www.eevblog.com/forum/rf-microwave/testing-rf-connectors-and-cables/msg2644482/#msg2644482 I've ordered a $18 SOL kit from ebay. I'll be adding comparisons to the Anritsu

But so much depends on what you use to perform the calibration with. To take an extreme example * 50 ohm system * Load used for calibration has an impedance of 30 ohms * DUT #1 is a resistor of 49

probably it just means that you calibrated your VNA with bad terminator. So, now it shows good terminators as bad, because they are not bad as one which is used for calibration :)

I had some time and tested some terminators for fun. I thought that commercial terminators are nearly perfect, but not mine. I have a N terminator perhaps from Digikey, and It was worse than my very

Thank you all for helpfull posts and links.

Nope, I always reformat data before gnuplot so that it reads in traditional columns. Attached should be the gnuplot Smith Chart command files

Thanks for all the feedback. First to clarify, the correction process is 2 -step for the BNC-alligator clip lash up. One is the removal of the shunt C of the OPEN clips and Two is the total series

Thanks!