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It can be even twistier than that. Win10 re-enumerates every time you plug or unplug a device, any time you (re?)connect with RDP, any time any USB device goes to sleep or wakes up, and probably other

When your PC boots it should re-enumerate all the USB devices. In Windows, you can force this in device manager (and there used to be a command line technique, as well, but I don

Thanks for your reply. As I understood the question, the transformer was to be added as an aid for measurement. Yes, if it is part of the original setup, it would need to be included in the

Success I got NanoVNA-H PS Is there a way to edit posts ? (More -> more ??) Or am I stuck replying to myself?

Thanks, sure explains few things. As I just posted elsewhere, I am ignorant about my toy version. ( And I am NOT taking it apart to find out... and I was just kidding about taking Polaroid of screen

Which breaks horribly if your source has very high or very low impedance - Consider a DC power supply.

connect to it as a serial terminal, and send the "info" command or? "version" command info – prints firmware info on console. Can be used to verify F/W build date. - This is similar the Version

My favorite question , not directly related to nanoVNA Why is having minimal SWR important ? Optional answer: SWR is an indicator of IMPEDANCE match between x and y devices - directly related to

Forgive me if I get clumsy, but I am still trying to adjust to this forum. AT this point I am not concerned whose version I own. What bothers me - when the silly gizmo powers up I get a flash of info

Both companies came from the same people. They are the same. I have ran Deepelec firmware in mine for almost 2 years now with absolutely zero issues. I tried the latest version by sysjoint for $hits

Now I am a firm believer in KISS concept. There is nothing wrong with "show and tell " as you propose it. To be of practical use I assume you are going to use resonant antenna @ selected frequency.

An overall high level block flow diagram being "identical" does not mean they are "identical". In the RF world, since line widths, spacings, routing, vias, etc are all variables, I wouldn't assume

ATU with VNA Concept The signal source power level isn't the main consideration to the experiment. It's whether or not the nVNA would be a useful tuning/adjustment indicate. Or at least at it seems to

Just to be a pain, the statement "absolutely identical..... except for....." Doesn't instill confidence in the content of the message. Get Outlook for Android<https://aka.ms/AAb9ysg>

Your NANOVNA is a wonderful educational tool. However, it doesn't do calculus. To answer all your questions, you really need a good graduate level reference addressing antennas and transmission lines.

Based on your measurement, it doesn't look 'that bad' to me. Return loss is generally < 15 dB (SWR of 1.4:1). Loss less than 1 dB. For the mass TV market, not too bad by my estimation. Dave - W?LEV

Imitation is the sincerest form of flat

I don't know about 2.7 from sysjoint which hardware that actually is but I can confirm, and you'll see with the attached diagrams, that Sysjoint HW ver 2.5 is absolutely identical and completely

This could get into an interesting discussion of electromagnetics and physics. Ultimately, antennas have a combination of radiated and non radiated fields with energy moving back and forth between the

Questions to think about concerning antennas and feed lines: K3EUI's Zoom talk on Nano VNA Part II (Under the Hood) 1) Why do antennas have resistance, reactance, and impedance? What are typical