telegraph, video, optical fiber, high definition television (HDTV), and voice communications systems and systems components; namely, HDTV decoders, housing for telecommunications equipment, transmitter, receivers, transmission lines, modems, multiplexers, terminals, filters, tuners, repeaters, radio links, telephone exchangers, switching sets or boards, network boards, test sets, printers, graphic and video displays, antennas, mobile telephones, computers and computer programs for use in the ...