I connected a piece of coax to the nano and, at the far end, connected first a resistor, then a capacitor, then an inductor. I read the nano screen in all three cases and the value indicated was within about one percent of what my lab quality gear measured. It's an amazing device, really. As I raise the frequency, the reading changes (always putting the marker at the cable end). So it's good to see, for example, how an ordinary resistor behaves at rf. I should try a resistor and reactance in series and see how it separates them. I will try a resonant circuit as well so I can read the resonant frequency and maybe Q. It might work to check crystals as well. As you know, the frequency accuracy is better than 1 ppm.
The range over which it's accurate isn't too great but for most measurements it's entirely adequate. The signal level is around -10 dBm, about 1/10 milliwatt, not enough to damage parts.
I have already measured cable length but that's a lot of trouble; cable attenuation is very easy to read. Next I will see how it measures characteristic impedance of coax. As an antenna analyzer it's very good but it has many more uses than that.
I might see if I can calibrate it as an rf voltmeter.
I have already gotten my money's worth out of it.
