Receiving and direction-finding antennas

Antennas chosen for hearing rather than transmitting.

Beverage antennasA long wire close to the ground that listens directionally.Receive loops and active antennasSmall receiving antennas for noisy locations.Noise cancelling and phasingNulling local noise.Direction-finding antennasLoops, Adcock arrays and Yagis for finding a transmitter.