 After 1952, licences were required in Canada only for general coverage shortwave receivers with single-sideband capability, and VHF/UHF scanners which could tune to the maritime or land mobile radiotelephone bands.Beginning in 1982, in response to a Canadian court's finding that all unscrambled radio signals imply a forfeiture of the right to privacy, the DOC (Department of Communications) required receiver licensing only in cases where it was necessary to ensure technical compatibility with the transmitter.Regulation SOR-89-253 (published in the 4 February 1989 issue of the "Canada Gazette", pages 498–502) removed the licence requirement for all radio and TV receivers.