Ключевые слова: aerial, antenna, background, blue, broadcast, cable, call, cell, channel, communication, connection, construction, contact, data, distribution, electronic, frequency, grid, industry, line, mast, metal, mobile, net, network, outdoor, power, pylon, radar, radio, receive, receiver, reception, satellite, send, signal, sky, station, steel, structure, technical, technology, telecommunication, telephone, tower, transfer, transmission, wave, wavelength, wireless,