12 “private automatic branch exchange” means an automatic telephone system connected to a telephone exchange by one or more exchange lines, which system serves the person to whom such exchange line or lines are so supplied; “private telecommunication licence” means a licence that authorises the licensee to provide or operate a private telecommunication service or system; “private telecommunication service or system” means⎯ (a) a telecommunication service which is not offered to or provided for members of the public; or (b) a telecommunication system which is contained within and serves a single building and is not connected with a telecommunication system established, maintained or worked by a telecommunication licensee; “radio apparatus” includes any apparatus, equipment, instrument, pole, mast, standard, wire, cable, thing or means whatsoever which is or may be used in connection with, or for the purpose of, conveying electromagnetic energy to or from a radio station; “radio receiving station” means apparatus referred to in paragraph (b) of the definition of “radio station”; “radio station” means⎯ (a) apparatus, other than generating apparatus, capable of being used for the transmission or emission of writing, signs, signals, pictures, impulses and sounds of all descriptions whatsoever wholly or partly by means of Hertzian waves; or (b) apparatus capable of being used for the reception of writing, signs, signals, pictures, impulses and sounds of all descriptions whatsoever wholly or partly by means of Hertzian waves; or (c) apparatus referred to in paragraph (a) of this definition and apparatus referred to in paragraph (b) of this definition in combination; “radio station licence” means a licence authorising the licensee to possess, control or work a radio station; “radio transmitting station” means apparatus referred to in paragraph (a) of the definition of “radio station”, whether in combination with apparatus referred to in paragraph (b) of that definition or otherwise; “radiocommunication service” means a telecommunication service or system whereby writing, signs, signals, pictures, impulses and sounds of all descriptions whatsoever are transmitted, emitted or received wholly or partly by means of Hertzian waves; “reserved”, in relation to an agency, postal or telecommunication service, means an agency, postal or telecommunication service the provision of which is reserved or deemed to be reserved exclusively to the Corporation or a successor company in terms of subsection (2) or (4) of section one hundred and six; “satellite telephone service” means a telephone service transmitted by satellite; “sender” means the person from whom any parcel, article or telegram purports to have come, unless that person proves that he is not the sender thereof;