Hello Kurt,
Yes I know that the curve is not so very good.
But it was just a priciple test for the procedure chain:
NanoVNA-saver .S2P file save to a T-Check curve with minimal effort, with free tools.
The optimizing starts now :-)
73, Rudi DL5FA
p.s. the T-Check Software from R&S no longer works under Windows 10.