Thanks Dave,
So if the H4 internal cal is *independent* of the nanovna-saver cal, exactly what are you clearing with nanovna-saver's "clear all cals"and when would that be necessary?
I ALWAYS either calibrate prior to measurements (and upon any sweep range or source power change) or I alternatively load a saved calibration file generated by nanovna-saver. Doesn't using the calibration assistant or loading the cal file "clear all cals"?
I understand the principles and use of a VNA. I'm a Senior Principal RF engineer and have used professional VNAs for 45 years. But I am new to the nanovna VNA implementation and the interactions of the H4 with software interfaces. What would be the source of information on whether nanovna-saver uses raw data from the nanovna as part of its calibration, nor not? I can always use the internal calibrate routine in the H4 for mobile use, it looks like that's necessary (since the nanovna-saver cal data is independent). But I am still not convinced that I can trust nanovna-saver's calibration (because MAYBE it depends on the H4's cal state).
Thanks and 73,
Dean W8ZF
