Ключевые слова: adult, antenna, bodyguard, business, call, channel, communicate, communication, control, controller, electronic, emergency, equipment, frequency, guard, hold, isolated, listen, media, message, military, mobility, object, officer, outdoor, people, personal, police, portable, professional, radio, receiver, remote, safety, security, service, signal, speak, speaker, switchboard, system, talk, talkie, teamwork, technology, tool, walkie, walkietalkie, wave, wireless,