Ключевые слова: aerial, antenna, blue, broadcasting, building, cell, cellular, cloudy, communication, digital, electromagnetic, equipment, field, frequency, global, industry, internet, light, metal, mobile, network, phone, pylon, radio, receiver, satellite, signal, sky, station, steel, structure, sun, sunlight, technology, telecom, telecommunication, telecommunications background, telecoms, telephone, tower, transmission, transmitter, wave, white, wireless,