Ключевые слова: altitude, antenna, blue, city, clouds, communication, connection, design, distance, dusk, electronics, energy, equipment, evening, hilltop, horizon, illumination, industry, infrastructure, landscape, lights, mobile, modern, monitoring, network, public, radio, red, region, remote, rural, safety, services, signal, sky, surgery, surveillance, systems, technology, telecommunication, telecommunications, telephony, tower, transmission, transmitters, utilities, utility, view, visibility, wireless,