Indoor loop matching

Normally, loops are matched with a primary winding about 1/5th the size of the main loop. In my case the matching is done using a tapped toroid tuned circuit. This matches the loop on 20m, 17m, 15m, 12m, 10m and 6m.

The wire used in the loop is about 1mm diameter and the loop diameter about 45cm across. It just sits on my shack windowsill. It works far better than I ever expected.

As I mentioned before, if you cannot use an outside antenna and you enjoy modes that don't require lots of retuning, consider a loop!