Rune, many thanks for developing this software and making it available to us all. It *greatly* increases the enjoyment of using and learning the nanoVNA.
I went through the full 2-port cal yesterday and then used the device/program to graph the response of a band reject filter. I'm wondering why, after the cal routine, the S21 line is at a -10 dB level? I don't see a way to zero it prior to making a measurement, so all the data relating to any measurement will have a 10dB error...or perhaps I'm missing a step?
Thanks again and 73,
John AE5X
