[ Amplifiers; ] Antennas; [ Batteries and battery chargers; ] Car antennas; Coaxial cables; Communications headsets for use with communication radios, intercom systems, or other communications network transceivers; Earbuds; Earphones [ and headphones; Marine radio communication machines and apparatus; Portable radios; Rechargeable batteries; ] Speaker microphones; [ Transceivers; ] Two-way radios; Walkie-talkies