SDN (S4C Digital Networks) is a company that operates one of the six multiplexes of channels on digital terrestrial television in the United Kingdom. Although it was co-founded by Welsh channel S4C in 1997, the company has been wholly owned by ITV plc since 2005.
SDN (S4C Digital Networks) is a company that operates one of the six multiplexes of channels on digital terrestrial television in the United Kingdom. Although it was co-founded by Welsh channel S4C in 1997, the company has been wholly owned by ITV plc since 2005.
Source: Wikipedia "S4C Digital Networks" · CC BY-SA 4.0
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