Licence required before establishment of station or network
4.—(1)  Except as provided in the First Schedule, no person shall possess, establish, install or use any station in any place or on board any local vessel or aircraft or in any vehicle in Singapore unless he has a valid licence granted under these Regulations.
(2)  Notwithstanding the grant of any licence under these Regulations in respect of any station, no person shall establish or operate any network in Singapore unless he has a valid network licence granted under these Regulations.
(3)  Every application for a licence shall be made in such form and manner which the Authority may, from time to time, determine for each class of licence and shall be supported by such information as the Authority may require.
(4)  The Authority may require any application for any licence to be submitted, instead of to the Authority, to any operator of a telecommunication system or service authorised by the Authority to receive and process applications for licences on the Authority’s behalf.
(5)  A licensee shall notify the Authority of any change in his personal particulars specified in a licence within 14 days of such change.
(6)  A licence granted under these Regulations shall be valid for such period as the Authority may determine unless revoked or suspended in accordance with the provisions of the Act or these Regulations, and shall be subject to such conditions, restrictions and limitations as the Authority may, from time to time, determine.
(7)  The Authority may at any time vary all or any of the conditions upon which a licence is granted or impose additional conditions and a licensee shall, at his own expense, comply with the varied or additional conditions.