Magloop Antennas
Magnetic loop is, in my experience, the best receiving antenna for the lower bands (40m and below).
A pre-amp also helps but is not strictly necessary.
The simplest design is just a loop of specially connected coax, fancier ones also add a Balun.
There are also designs for a more rigid transmit version, but I am not interested in that at the moment.
Simply search “magnetic loop”, there are many guides to build these.
