Intercoms; Walkie-talkies; Antennas; Apparatus for wireless transmission of acoustic information; Communications headsets for use with communication radios, intercom systems, or other communications network transceivers; Pocket translators; Portable emergency intercoms; Radio receivers and monitors for reproduction of sound and signals; Radio receivers and transmitters; Radio transmitters; Two-way radios; Vehicle radios; Wireless indoor and outdoor speakers; Wireless narrowband radios; Wirele...