Ключевые слова: 3g, 4g, antenna, bandwidth, black, blue, broadcast, broadcasting, cell, cellphone, cellular, communicate, communication, connect, connection, construction, coverage, data, digital, dusk, engineering, equipment, frequency, global, gsm, industry, internet, mobile, modern, network, phone, radiation, radio, receive, receiver, repeater, satellite, signal, silhouette, site, sky, station, sun, technology, telecommunication, telephone, tower, transceiver, transmission, transmit, tree,