What is a Tuned Loop Antenna?
The loop antenna is designed primarily for the AM band, which utilises the 530 khz to 1620 khz section of the radio spectrum. Indeed there are two different types of loop antennas, The first of these is the ferrite bar as build into practically every portable radio, the other is wound on an air-core form, and is far less popular with radio manufacturers because of its size, this is known as a tuned loop antenna. A loop antenna is very directional. The pickup pattern is shaped like a figure eight. The loop will allow signals on opposite sides to be received, while off the sides of the loop the signal will decrease or be nulled out. The nulling feature will allow you to remove a local station on a frequency and pick up another on the same frequency by removing the local signal. For example, I could be listening to Magic 1548 from Liverpool on 1548 kHz from my home in Ireland, also on that same frequency I can faintly pick up some music and chat from another radio station on the same freq
