Yes, I can calibrate the device, but when doing measurements, I get a lot of lines in a mess. If you have a look at the photo - measurement - you can se a curve form, but rather thick. The form of the curve is correct, but there is a big difference between measuring point, and this makes the "thick line".
If time permits tomorrow, I will make a "correct measure ment with my NanoVNA-F and compare the result.
Karl Jan
