Hi All
There has been several contribution on how to create a T-Check for the NanoVNA and I have made a document about why these T-Check are not so promising.
It is in fact not possible due to the lag of adequate error correct models as NanoVNA allows only error correction (at the best as the exact models are unknown) for one direction and not bidirectional.
Have a look and see the experiment I have made to enlighten the interested reader ?
Kind regards
Kurt
Kurt Poulsen