Read this: DAB - BBC Radio 5 Live Sports Extra/ Radio 4 LW programmes - BBC - FAQs - Home

Summary: Flexibility within the DAB system means that part-time 'secondary services' can be created to allow broadcasters to transmit extra programs. Radio 4's LW output is transmitted as a side channel to Radio 4's main output. To access 'secondary services' you need to tune in when the service is actually broadcasting. - bbc.co.uk

www.bbc.co.uk

DAB - BBC Radio 5 Live Sports Extra/ Rad…



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