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I think you'll find if you leave that black window a bit longer, then NanoVNA will load... it's a slow starter, that's all. Mike

I mostly use the box alone. NanoVNA-saver refuses to run on my PC (Win10pro, just gives a black window). I have tried VNA-qt, and the big screen is nice, but -qt lacks some features available on the

My nanoVNA is also from Amazon but it's a nanoVNA-F. I did not sound the difference with your -H. Using the box alone is crazy. I advise you to use it through nanovna-saver. It's a bit of a hassle to

There is no difference in calabration kits except maybe different connectors. Clyde KC7BJE

Respectfully, I think measuring a CM choke is being overly complicated in this discussion. The common mode Z is measured just as if the CM choke was an inductor or capacitor. Either measure it with an

Remember when doing a new calibration, you FIRST must *clear* BEFORE running the new calibration. I can not imagine two units behaving identically in this respect. Dave - W?LEV -- Dave - W?LEV

I purchased a NanoVNA off of Amazon. Seem to work when I got it, but then when I tried to calibrate it I'm able to. I even tried updating the firmware. I exchanged it for another one and this time It

Hello Ed, I have not seen this configuration before (I use the configuration mentioned here: http://www.archaeocosmology.org/eng/baluns.htm#simulation). Any link to an article about this way of

The diagram from Miro F9LR is very generalized. It is not specific for the case where the DUT is a common mode current choke (current balun). It might be helpful to review what a common mode choke is

Hello Francois, I made an error (this was highlighted to me by a fellow list reader): everywhere I use: mu' + jmu", should have been mu' - jmu" All the best, Victor Op di 5 jul. 2022 om 23:13 schreef

Well.. you already see the multifunction capability (Spectrum Analyzer, 1 direction VNA) in popular instruments like the Keysight Fieldfox, and similar devices from Anritsu, etc. There will always be

Hello all of you, Op vr 8 jul. 2022 om 19:58 schreef DP <dpoinsett@...>: Perhaps this is related: When transporting non-DC currents in a coax, both the shield and the core need to be

"On the port 0 I connect shield and center conductor (as with any coaxial transmission line), on the other port I do the same. Simple connection, nothing fancy. Shield to shield, hot to hot :)" "Now I

Standard and required practice with anything RF: BOTH ENDS of the shield of a coaxial cable must be appropriately connected at their respective ends / ports. Here is my setup for measuring CMRR.

My favorite SDR is from AirSpy. Excellent quality and SW (free) support. Dave - W?LEV

I use Earthlink, and they do not block it, but I think I had to add the groups to my address book to avoid the SPAM filter catching them. 73, Jim

That may be true now but with the constant advance in technology and miniaturisation it seems quite likely future developments will add a substantial range of test capabilities to miniaturised NVA's.

You are right :) Here is a quick diagram (see attached) that shows: * 2 port setup * internally bonded grounds for two nanoVNA ports * two "available" paths the return current can take (through DUT

Use a VPN to connect to the Internet. While there are free VPNs, you should be able find a good deal on a lifetime plan for a premium VPN service, as these are preferable, through Groupon or

I think this might be better posted in the group manager's forum. A web search turned up several instances of this over the last few years. You could also contact GIO support about it. And it never