Ключевые слова: 3g, 4g, aerial, antenna, background, bolt, branch, broadcasting, cell, cellular, cloud, communication, digital, equipment, frequency, galvanized, global, industrial, metal, mobile, network, phone, radar, radiation, radio, receiver, repeater, satellite, signal, sky, stained, station, steel, structure, technology, telecommunication, telecoms, telephone, tower, transmission, transmitter, weathered, white, wire, wireless,