<P> A communications receiver is a type of radio receiver used as a component of a radio communication link . This is in contrast to a broadcast receiver which is used to receive radio broadcasts . The difference between the two is that broadcast receivers only receive broadcast bands, such as the medium wave and / or longwave AM broadcast bands and the VHF FM broadcast band, while a communication receiver receives a wider part of the radio spectrum not used for broadcasting, that includes amateur, military, aircraft, marine, and other bands . They are often used with a radio transmitter as part of a two way radio link for shortwave radio or amateur radio communication, although they are also used for shortwave listening . </P> <P> Commercial communications receivers are characterized by high stability and reliability of performance, and are generally adapted for remote control and monitoring . For marketing purposes, many hobby - type receivers are advertised as a "communications receivers" although none are suited for heavy - duty, reliable 24 - hour use as the primary form of communication for an isolated station . </P>

What is the definition of receiver in communication