Antennas; Radios; Transponders; Walkie-talkies; Cordless telephones; Global positioning system (GPS) apparatus; Masts for wireless aerials; Radar apparatus; Radio pagers; Radio transmitters; Radiotelephony sets; Satellite-aided navigation systems; Telephones incorporating intercommunication systems; Transmitters of electronic signals; Vehicle radios; Wireless communication devices for voice, data or image transmission; telecom transmitters