A lot of radio stations are active in the region below 100 kHz ... But DX-ing in the VLF band is not all that easy. Besides the fact that propagation doesn t support skip the way the 20-m ham band ...
Of course with the frequencies the RTL software-defined radio deals with, it’s rarely necessary to build antennas out of sheet metal. The team at TinkerSoc built their discone out of galvanized ...