In this video we will a test a 9:1 UNUN at both the 50 ohm coaxial feedline point and the 450 Ohm antenna termination point with a NanoVNA. We will discover the UNUN's impedance, SWR and Return Loss from 1.8 Mhz to 30 Mhz.
My apologies for the camera being a bit off target in some of the scenes.