Ключевые слова:
Wire transmission (telecommunication), Telecommunication systems, Telecommunication, Communication networks, Cable television, Television networks, Broadcasting networks, Visual signals, Acoustic signals, Television systems, Central-antenna television, Safety measures, Occupational safety, Electrical safety, Equipment safety, Television equipment, Earthing, Protected electrical equipment, Television antennas, Lightning protection, Wind loading, Antenna masts, Video signals, Communication equipment, Transmitters, Receivers, Amplifiers, Optical fibres