Cable networks for television signals, sound signals and interactive services. Active wideband equipment for cable networks. Methods of measurement of the maximum operating output level in the return path|Radio networks, Radiocommunication, Acoustic signals, Wire transmission (telecommunication), Signal transmission, Telecommunication, Noise (spurious signals), Cable television, Coaxial cables, Radiofrequencies, Communication networks, Domestic, Television networks, Television systems, Broadcasting networks, Telecommunication systems, Visual signals, Communication cables