Thank you Dave. It is a quite interesting overview.
I just suggest to add an advice about having also an eye of the jX (reactance) value. The idea is to check that this value combined with R (Z module) remains in a relevant accuracy field of measurement for the NanoVNA. See captures below.
1: 10 pF capacitor @ 145 MHz : R and C values
2: 10 pF capacitor @ 145 MHz : R and X values
3: Indicative accuracy for s11 measurement (configuration1), suggested Z module limits for a maximum relative error measurement of 3%, between 10 ohms and 200 ohms. The previous capacitor result of the measurement respects this criteria.
73 - Jean-Roger
