Communication apparatus, namely, transceivers, mobile data receivers, radio frequency receivers, radiotelephone, mobile transceivers, transceivers having frequency band suitable for ships, boats and aeroplane, amateur radio transceiver, and parts and fittings of aforesaid goods; audio speakers; headphones; batteries; battery packs; battery chargers; power supplies for use with scientific apparatus; battery power packs; amplifiers; radio transmitters; FM modulators; demodulators; remote controllers for radios; antennas; antenna turners; headsets for telephones; electric switches; sound alarms; electrical connectors; straps for transceivers; GPS navigation devices; video sounder; plotters; radar apparatus; global positioning system; receivers of electronic signals and sonar; transceiver computer interface terminal; computers; personal computers; office computers; computer servers; host computers; central processing units (CPU); integrated circuits; integrated circuit chips; electric semiconductor processors; semiconductor processor chips; microprocessors; computer display terminals; computer display monitors; liquid crystal display monitors; floppy disk drive units; compact disc read only memory drive units; compact disc read only memory writer units; magnetic optical disc drive units; mini-disc drive units; hard disk drive units; optical phase change shifters; scanners; LAN (local area network) hardware for connecting portable radio devices; keyboards; printer cables; computer cables for local area network; modems; modems for facsimile machines; wireless modems; computer fax modem cards; power adapters for computer terminals; carrying cases adapted for personal computers; printed circuit boards; electronic circuit boards; circuit boards; computer memory cards; computer memories for use with semiconductors; ethernet circuit boards, integrated circuit cards and communication hubs; computer software for operating computer system programs; and parts and fittings of the aforesaid goods