This shortwave magnetic loop antenna For improved reception and noise rejection. The shielded active broadband magnetic loop architecture provides enhanced noise rejection over standard antennas.This active magnetic loop antenna is designed for reception of signals over the range of 50 kHz to 30 MHz. It includes a very high dynamic range low-noise preamplifier that can be mounted to a pole or any flat surface. The preamplifier is designed for minimum intermodulation distortion in the presence of very high level signals that would normally overload most amplifiers. For proper operation the preamplifier needs to be powered as shown in the diagram shown in Figure 1 with the supplied power inserter and power supply that duplexes DC power on the same cable carrying the preamplifier’s output. The antenna should be oriented in the proper direction to maximize reception of the desired signals (see details below). For best performance, the amplifier should be installed near the antenna to avoid amplifying low level local interference that may enter the coaxial cable leading from the loop antenna to the preamplifier’s input.