Ключевые слова: antenna, background, black, call, communication, connection, control, copy, device, digital, distance, electronic, emergency, equipment, frequency, green, guard, job, military, mobile, object, officer, one, police, portable, protection, radio, receiver, safety, security, service, single, space, speaker, system, talk, talkie, tech, technology, text, top, transceiver, transmit, transmitter, view, walkie, walkietalkie, wave, wireless,