[TowerTalk] measuring impedances with a VNA

[jimlux]

We've discussed the measuring of things like antenna traps, and we've 
had varying levels of success.


https://www.mwrf.com/test-measurement/make-accurate-impedance-measurements-using-vna

Discusses three different configurations (one port, and a couple two 
port measurements), gives the math, and looks at the uncertainties.. 
each works best in a particular range of impedances.