 In the event, they were the only bidder and, after having their business plan approved, were awarded the licence to operate Multiplex A by the Independent Television Commission in 1997.Before their licence became active, the name of the company was changed from S4C Digital Networks to SDN.Upon the activation of the licence in 1998, SDN began broadcasting Multiplex A in 64QAM mode at 24 megabits/second (which allows many channels to broadcast, though makes it more difficult to get a good signal).