Ключевые слова: aerial, antenna, array, astronomy, background, blue, broadcast, business, cable, china, closeup, clouds, communication, connection, crops, digital, equipment, evening, global, industrial, information, internet, isolated, large, many, network, observatory, outdoors, power, radar, radio, radio waves, receiver, red, research, satellite, science, signal, silhouette, sky, summer, sunset, technology, telescope, tower, transmission, transmitter, wave, wireless,