Ключевые слова: antenna, art, assistance, black, button, call, channel, communication, connection, device, direction, distance, electronic, emergency, equipment, frequency, generic, hardware, illustration, isolated, message, mobile, mobility, personal, plastic, police, portable, radio, receiver, repeater, safety, screen, security, set, sos, station, system, technology, tool, transceiver, transmission, transmitter, vector, volume, walkietalkie, wave, wireless,