Delta Loop Antenna Complete plans to build Delta Loop antenna. Includes worksheet to calculate antenna lengths for multiple frequencies.
Joe Carr's Tech Notes Articles about receiving antenna theory, feed lines, grounds, bandpass filters and loop antennas for Mediumwave and Shortwave reception.
Select-A-Tenna Manufactures an inductive loop AM radio antenna.
Van's Think Tank A collection of antenna links for shortwave, mediumwave and longwave.
