This text introduces basic communication concepts and circuits, including modulation techniques, radio transmitters and receivers. In addition, it discusses antennas and microwave techniques at a technician level and covers data communication techniques (modems, local area networks, fibre optics and satellite communication) and advanced applications (cellular telephones, facsimile and radar). The work is suitable for courses in Communications Technology. This edition includes performance objectives and critical thinking questions for every chapter, as well as updated television technology and spread spectrum in data communications. An activity manual (0-02-801843-5) and instructor's guide (0-02-801844-3) are also available.