Both this method and the traditional single-channel
method require an FM band antenna.
Two common antennas used for FM radio
receivers are the half wave and quarter wave
antennas. These are typically metallic conductors
with a linear length equal to ½ or ¼ the
wavelength of the desired frequency. In order to
receive the FM radio band (87.8MHz to
108.0MHz) an antenna tuned to a middle
frequency of 97.9MHz is used. To find the
wavelength of this frequency we use Equation 1,