If you are a radio amateur, you may be familiar with the magnetic loop antenna. It’s different from most conventional wire antennas, taking the form of a tuned circuit with a very large single ...

you don’t need to access the loop part during operation. I decided to try the antenna at a few different times a day in a few different locations. I used an old portable DAK shortwave receiver ...

The original „donut“ loop antenna did not work seemingly due to a design issue. A scalpel, two tiny wires, and four solder joints rescued it.