Airspy YouLoop review includes: Broadband small-loop background; Comparison of the conventional and crossover (Möbius) approach to shielded loop design; Introduction to the YouLoop; Photographic study of the key feedpoint and crossover components; Creation of a "groundless" receiving test system; Reception observations; Use of the YouLoop's modular nature to directly measure and compare the Möbius vs. conventional shielded loop. Dissection and testing confirm the Airspy YouLoop is a delicate, but capable broadband, electrically-small receiving loop antenna that trims component costs to a new price point while providing functional service for LF/MF/HF listening. There's no escaping Chu-Wheeler inefficiencies, but measurements suggest the Möbius crossover approach provides a benefit below 1100 kHz over a traditional gapped shielded loop. See a photographic tour of the components and testing with a groundless test jig. https://www.hamradio.me/antennas/airspy-youloop-lf-mf-hf-mobius-receive-antenna.html
