Measuring Common Mode Current Chokes with a NanoVNA

A presentation originally given at QSO Today Ham Expo in Fall of 2021.  Mark presents on how to measure Common Mode Current Chokes, commonly referred to as a "1:1 balun" or "current balun."

In this presentation, Mark describes a test rig he built to perform these measurements.  That test rig is now sold by Halibut Electronics, as the CMCC Test Rig. [link to come.]