Ключевые слова: aerial, antenna, appliance, broadcast, command, communication, connect, connection, control, defense, detection, device, electronic, equipment, frequency, information, intelligence, listening, locator, marine, maritime, military, naval, navigate, navigation, navy, position, powerful, protection, radar, radio, radiodetector, radiolocator, receiver, relay, satellite, ship, signal, sky, sonar, surveillance, system, technology, telecommunication, tower, transmit, vessel, warship, wireless,