On Tue, Jan 31, 2023 at 12:44 AM, Donald S Brant Jr wrote:
There is one particular use case where no calibration is needed at all, and
that is when tuning a magnetic loop or similar antenna, where the only
adjustment is resonant frequency. The S11 VSWR/log mag dip will be at the
same frequency regardless of calibration status.
73, Don N2VGU
Good point as well.