Loop antennas aren’t ideal–but neither is any other small antenna. Because the loop is tightly tuned to a particular frequency, it requires retuning for even relatively small frequency changes ...

The idea of a loop antenna is simple enough ... in their transmitting versions, they are often tuned to resonance by an air-spaced variable capacitor. Coaxial loops like this one provide enhanced ...

The Antennas Direct ClearStream Max-V Pro uses two double-loop UHF elements (the figure ... high up in a south-facing window ...