Ключевые слова: antenna, architecture, background, billboard, blue, brazil, broadcast, building, business, cell, communicate, communication, connect, connection, electronic, emits, engineering, equipment, gsm, high, industrial, industry, infrastructure, internet, metal, mobile, network, phone, radio, receiver, roof, sao paulo, signal, sky, station, steel, structure, tall, technology, telecommunication, television, top, tower, transmission, transmit, transmitter, tv, urban, wire, wireless,