BBC Radio Leicester high point in Charnwood Forest, part of the National Forest. Since 6 December 2002, the station's DAB signal has come from the NOW Digital East Midlands (NDEM) Leicester 11B multiplex, which comes from Copt Oak and Houghton on the Hill. The Waltham transmitter and Houghton-on-the-Hill have a Digital One multiplex and Waltham has a BBC National DAB multiplex. The Copt Oak transmitter also broadcasts Gem 106. The majority of the station's programming is produced and broadcast from Leicester. During off-peak hours, BBC Radio Leicester also carries regional programming for the Midlands and East Midlands regions, produced from sister stations BBC
BBC Sound Archive of around 350,000 hours in total duration. Automatically available are "live major news sequence programmes, live music sessions and concerts, drama, arts, features, events, light entertainment, science and education programmes", while "DJ shows with commercially recorded music, local radio and World Service output" are less likely to be retained. Access to part of the archive is made available to researchers and the public through the British Library. Technological advances have increasingly improved the durability of early recordings, requiring their translation into digital formats, and enhancements such as noise reduction. BBC Sound Archive The BBC Sound Archive is a collection of