There’s a joke in the world of radio that all you need for a HF antenna ... antenna, and if you’re not fortunate enough to have a lot of space, your best choice may be a magnetic loop.

This has made small antennas more popular, despite some limitations. [Tech Minds] reviews the GA-450 indoor active HF loop antenna and finds it better than expected. You can see the video review ...

The single-turn loop antenna is a metallic conductor bent into the shape of a closed curve, such as a circle or a square, with a gap in the conductor to form the terminals. A multiturn loop or coil is ...