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I have used the NANOVNAs quite successfully to test 300-ohm and 410 to 450-ohm balanced lines at HF. The size of the NANOVNAs is small enough to not have any (extremely little) influence on the

Hi Mark- What's causing the data to change when you plug the unit into the USB cable is the fact that adding the USB connection causes that USB cable (and whatever else it's connected to) to become

I can vouch for the quality of Mini-Circuit products, I have used them in MIL SATCOM projects. 73, Don N2VGU

Connect the VNA over Bluetooth serial. You can buy the adapters for a few $. How to attach the adapter has been discussed a number of times here.

Already understood and thanks. Maybe a better question is: Is there a method to isolate the VNA from the PC when connected via the USB to kill (choke?) the effect. I am just experimenting and learning

I would suggest one of the small transformers made by Mini-Circuits. You can get both the unbalanced to balanced transformation and 50 Ohms to XXX per your needs. I have been using their 50-75 Ohm

Yes, I understand. My test are in the MHz not GHz. That is a period and not a comma, but yes I get your point. Will do.

Has anyone used a NanoVNA to characterize a Twin wire twisted Balanced line like say a CAN bus line or an ISO-SPI balanced 120 ohm line? If so what interface hardware has been used or is recomended?

Howdy, Are there any US Manufacturers building/selling NanoVNAs? I am on a project that is regulated by The Build America Buy America Act and NDAA889 Laws which unfortunately make the linked purchase

An essential principle of troubleshooting is to be able to reproduce the phenomenon. As long as another operator has not been able to contater the same thing as KQ4EKK, all the various and varied

How many times do we, collectively, need to point out that EXTENDING THE COUNTERPOISE WILL CHANGE READINGS? Attaching the USB cable is lengthening the extent of the counterpise from just the NANOVNA

Pkease remember that *all* communications related to the sale of items (for instance, the one below) must be private other than the one initial post offering the item for sale. In this case, the

Thanks to all for their help with this. Greg, it is not a bad connector, I changed and tested all connection points, cables, etc. with identical and test units in order to remove those variables. I

Spoken for... gone... Thanks!

It sounds as if your measurement system is not sufficiently decoupling the test articles, so the test system is becoming part of the measurement; this happens often when measuring antennas. Perhaps if

Hello I just did a test on mine which is a NanoVNA-F [v1.0.5] Is it real? a clone ? I bought it in February 2021 : Moligh doll Vector Network Analyzer NanoVNA-F HF VHF UHF UV VNA Antenna Analyzer

I’ve seen similar as well. Oftentimes I don’t take the time to test with multiple configurations but occasionally I’ve noticed where either the Smith chart trace “doesn’t look right” or

I am building different Un:Uns using different wiring schemes and caps. While testing a config, I noticed that my battery was down to one bar and I did not have the USB cable plugged in at the time. I

QUOTE: Cars are mobile noise generators Especially Fords. Dave - W?LEV -- Dave - W?LEV

The AM radio in my car works just fine. Chevy BoltEV. How short our memories are - does nobody else remember "alternator noise"? Cars are mobile noise generators. 73, -Rick