Making a 20m magnetic loop antenna

Or unmaking, actually.

Two wires twisted together act as a makeshift capacitor to fine-tune the antenna by bringing the resonant frequency down to 14.078 MHz (the loop's self-resonant frequency due to stray capacitances is a bit too high, around 15-16 MHz if I remember correctly; I measured it months ago). Primitive, but surprisingly stable.

The antenna was resonant and had a good SWR, but didn't perform as well as I wanted it to (probably because the window is covered with a metallic layer), so I dismounted it… and realized I didn't record a video when actually making it, so I just did.

Music: Neffex – How's It Supposed to Feel

Видео Making a 20m magnetic loop antenna канала Circuit Chaos