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How did you get it loaded and working?

Andrew, NanoVNA-saver works fine on my Mac. 73 John M0JBA

Correct. Dave - W?LEV [email protected]> wrote:

Sounds intriguing! I routinely find self-resonance and calculate parasitic C from that. I see that I could take that R and calculate Q, but the Q would be for a frequency far from a practical one, and

You're fine with alligator clips at HF frequencies - especially the BC band for the crystal radio. Don't sweat it !! If your crystal radio operated much above 100 MHz, yes, the alligator or crocodile

That program sounds wonderful! The only problem is that my computer is a Mac, and I bet it won’t handle it. I know someone might say “O just get Python and change XYZ while uploading ABC from

There are several programs - please browse the forum Wiki for information.

Yes, that article and Alan’s explanation were very helpful. I realize that I had a misunderstanding of where a “parallel” resistor would be, and how a resonant circuit can be tested via shunt

exactly. Let's say the gamma measurement is +/- 5%.? If you convert gamma = 1.05 (angle = 0) you get -2050 ohms and Mag S11 = 0.4238 dB If you convert gamma=0.95, you get 1950 ohms and mag S11 =

Yes, R cannot be < 0, but my interpretation is simply that the -2 is error in some small number like, say 1 or 2 ohms. I will admit that many of you experts talk about how you attach your DUT very

Hello, there is one suitable PC software to control the full function of NanoVNA for windows? 73/Francesco

Bill, I'm not sure this does what you want, but try it: Set frequency, coil diameter, and wire gauge. Click on Turns for turns/inch and set the value you have in mind. Then vary coil length with the

Gary, Have you evaluated the Q at OR near the SRF and then the Q significantly below SRF?

It's not the backlight current as it runs off the 5v line, not the 5V-RF or the 3V sources. Since the unit is new, it's most likely infant-mortality on the part or a counterfeit part was used that was

Hi Brian, Thanks for reminding all about COIL. It takes a little getting familiar with it since you use an interesting GUI interface, but I got the handle on it.? Is there a way to input the coil

As a guess, a thermal issue? 73 JRJ WIYN

Thanks, It looks like the LD01 is defective as only 1V is coming out instead of 3V. I didn't expect to have a defective unit as I posses it only 2 weeks. I'll claim for a replacement rather than

Quick and dirty method... Just measure the self resonance of your coil. If you calibrate the nVNA to your fixture and then just run the S11 sweep up high enough on the coil, you will undoubtedly see a

Brian, thanks for the background information on COIL I have gotten many features to work under Wine in Linux and it is very useful. I may have spoken a bit too soon in implying everything would work

Well, it appears you have some type of hardware failure.. if you reconnect the battery, measure the voltage at the power SW with the USB cable disconnected - it should be 5V. Turn ON and? measure the