@ Peter I0YLI
hello peter, the merit is all who wrote the program, who designed the nanoVNA, the developers ..
We, as users, try to give the most correct feedback possible.
@All
I confirm that the program has no problems for me. There is probably some incompatibility with previous versions but this is resolved by deleting folder "NanoVNASaver" in:"users/AppData/Roaming/
In this way you have the "clean" program as if it were the first installation. At this point do the calibration, apply your preferences and you shouldn't have any more problems.
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*73, Lucio I0LYL Rome, Italy*