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Besides the Steber article on the nanoVNA, there is an article on a "Simple Inexpensive Accurate Vector Impedance Meter" by Koehler on page 23 that describes the design of an instrument nearly

It occurred to me the T-check is the single vna equivalent of the vna comparison formula (ratio of cross ratios) The T-check also works if you connect the same single load to port 1 AND port 2 which

Thank you Lucio for the Web and Android client information! Happy New Year!!

On Sat, Jan 4, 2020 at 08:49 AM, Lucio I?LYL wrote: A few answers to find here: https://www.rtl-sdr.com/nanovna-version-2-0-first-pcb-pictures-released-nanovna-naming-credit-clarifications/

Very good on the saver. On the hardware side, the delay when entered handles the "de-embedding" or negation directly. In any case, a hands on exercise or experiment is probably with a ton of

Be aware you have to enter a negative offset delay in the calibration panel of nanoVNA-saver when de-embedding a cable or stripline But it works! -- NanoVNA Wiki:

A few answers to find here: https://www.rtl-sdr.com/nanovna-version-2-0-first-pcb-pictures-released-nanovna-naming-credit-clarifications/ -- *73, Lucio I0LYL Rome, Italy*

Gabriel Tenna White's version 2 hardware and firmware design efforts are well documented on this forum and on her GitHub pages. Hugen and edy555 reportedly have version 2 efforts in the work, but so

Next to the 25ohm check and the T-check, Kurt wrote an excellent proposal on how anyone can check another aspect of the quality of the calibration /g/nanovna-users/message/4609 What

I guess this is why R&S introduced the T-check many years ago as a simple approach to establish quality of measurement In my own simple words, L calibration establishes the center of the smith chart,

Gary, are you saying that different "characterized" SOL standards, when measured after calibration, produce identical results. (-1,0,1)? If so, this is not true -- they produce the results equivalent

I had what seems to be the same problem, but with the last version, updated Windows Vista Professional. The error message was "could not load Qt platform plugin "windows" in "" even though it was

I find it interesting that some very educated folks like Dr Stebers are quick to critique things but you rarely see them helping with the creation of improved documentation or helpng others on the

Search under the concept of de-embedding and on the vna you will use the function electrical delay. 73' Alan

I know that. As a matter of facts, on this PC I have a dual boot with Debian Buster. And the main HD is an SSD (I have 4 additional disks on this tower). Yes, I could boot with Debian and run

His overall impression seems pretty favorable - like many of us amazed that such performance could be available at such a price. He found impedance measurements to be very good in the range of 12 to

Thanks , it worked out very well. Given a 900MHz max frequency I was able to use a 2 inch stripline, find the frequency for its 1/4 wavelength and then measure the reactance at 1/2 the 1/4 wavelength

Good morning Erik; @ Erik... I believe the reference to "absurdness of identicality" was with respect to the notion that different load values... which, when calibrated, produce identical results (-1,

Pentium 4 machines (originally with Win XP) run very nicely with any of the popular Linux distros (like Linux Mint 19.3) ,obviously 32 bit . With a ( nowadays low cost) SSD the system is fast . Go for

GIN&PEZ I failed to include in my summary... @ Gary O’Neil - /g/nanovna-users/message/9128 the also very revealing and important consequence of polynomial error correction attempts;