I'm testing my new NanoVna-H4 iusing NanoVNA-Saver and have? a problem doing the 2 port calibration .
When I have done the last item of the calibration procedure (through) I see a nice sinewave-like trace around zero in the S21 Chart. This obviously is the uncalbrated S21.
When I press "apply"? this trace should be? updated? closer to 0 by the correction, but instead of that it drops down 35dB with a lot of noise above 900 MHz . The other charts are updated correctly as far as I can see.
The same thing happens ofcourse when the calibration has been saved and (re)used.
Are there others that have seen this ?
Jos
