开云体育

Hi Gilles,

I assume you followed a calibration routine as documented. There is one in the file directory. See

/g/nanovna-users/files/NanoVNA%20Calibration%20Considerations%20and%20Procedure_v1.1.pdf

or there are various messages and threads documenting similar approaches. I agree after the cal routine is complete using the standards used in the cal, the thru corrected should read essentially 0 dB.

Alan