communications devices for radio, cellular and personal communications service frequency use, and parts therefor, namely, antennas, electrical and electronic devices for improving or modifying transmission and/or reception characteristics of antennas and of radio telephones, namely, antenna mounts, transmitters, receivers and transceivers and parts thereof, boosters, repeaters, distributed antennas, base stations, mobile telephone switching offices, amplifiers, filters, duplexers, conductors, cables, connectors, and couplers, and parts and sub-assemblies thereof, call processing software and specialized digital signal processing software for use in the cellular, personal communications service and radio frequencies, fiber optic transceivers for transmitting and receiving information for radio, for cellular and personal communications service frequencies, for telephone, and for cable television, and units for testing, measuring and characterizing the RF signal properties in the radio, cellular and personal communications service frequencies