Hello,
I exported some data from my nanoVNA S-A-A V2 using the nanoVNA saver software, but when I viewed the .s2p file, S11 values were the exact same as my S21, even though that was not the case in the S11 and S21 plots. I tried to export the data multiple times with different frequency ranges, but I am still having this issue. I would appreciate some help, thanks!