Ключевые слова: aerial, antenna, architecture, blue, broadcasting, building, business, cellular, color, communication, construction, electromagnetic, equipment, frame, frequency, global, gsm, industry, metal, microwave, mobile, modern, network, new, old, outdoors, pattern, phone, radio, receiver, repeater, signal, sky, station, steel, structure, technology, telecommunication, telephone, tower, transmission, transmitter, white, wireless,