Magnetic loops

It is some years since I built and used magnetic loop antennas on HF. They work remarkably well, although they are narrow band and need frequent retuning unless you are using modes like FT8, WSPR or PSK31 where the activity is all concentrated in one place. I recall using a small wire loop in the bedroom and getting WSPR spots from Japan with 20m QRP.

See https://sites.google.com/site/g3xbmqrp3/antennas/magloop .

I see Southgate News has a link to a video on magnetic loops.

See http://southgatearc.org/news/2018/december/magnetic-loop-antenna-current-and-voltage-distribution.htm#.XApJVvZ2u00