Ключевые слова: 3g, 4g, antenna, background, blue, broadcast, cell, cellular, cloud, communication, connection, data, digital, electricity, equipment, frequency, global, high, hill, industrial, internet, mast, metal, mobile, network, phone, power, radio, red, repeater, satellite, signal, sky, station, steel, structure, tall, technology, telecommunication, telephone, television, top, tower, transmission, transmit, transmitter, trees, wave, white, wireless,