radio, cellular, Personal Communications Services (PCS), and telephone communications systems and components therefor, namely, antennas, electrical and electronic devices for improving or modifying transmission and/or reception characteristics of antennas and of radio telephones, antenna mounts, transmitters, receivers and transceivers and components thereof, cellular, PCS, and radio telephone system boosters, repeaters, distributed antennas, base stations, controllers, private branch exchanges, mobile telephone switching offices and components thereof, 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 cellular, PCS, and radio telephone systems, fiber optic transceivers for transmitting and receiving information for radio, cellular, PCS, telephone, and cable television communications systems and components thereof, and equipment for testing, measuring and characterizing the RF signal properties of radio, cellular and PCS communications systems