Ключевые слова: aerial, air, amateur, amplitude, antenna, call, channel, close up, communications, emergency, frequency, grass, green, hand, handheld, mobile, mobility, objects, organized, people, personal, phone, police, portable, radio, receive, recreational, red, remote, repeater, safety, scan, secrecy, security, short, system, talkie, talking, technology, transceiver, transmit, transmitter, trunking, using, walkie talkie, wave, wireless,