Radio Communication provides a comprehensive introduction to the theory and practical applications of modern radio communication systems. Radio communication systems are an essential feature of modern life and are used to transmit signals for broadcast radio and point-to-point stations, mobile telephones and 2-way mobile radios systems. This new edition previously published as Radio Systems Technology provides a comprehensive introduction to the principles of radio communication along with practical applications. The book discusses the three main methods of modulating a carrier wave to transmit a signal, i.e. amplitude modulation, angle modulation and digital modulation. The various methods of transmitting the radio signal from where it is originated to the aerial are described, followed by the principles of aerials and electromagnetic wave propagation. The book then looks at practical examples of the use of these principles for radio receivers, radio transmitters, transceivers and mobile telephones. Lastly radio systems such as microwave radio-relay, communication satellite and mobile radio are considered. Radio Communication has been written specifically for those students studying the new BTEC Radio Communication Engineering Higher National Certificate/Diploma optional unit. It will also be a useful introduction to Radio Communication for undergraduate students.