Greenwich Time Signal Greenwich Time Signal The Greenwich Time Signal (GTS), popularly known as the pips, is a series of six short tones broadcast at one-second intervals by many BBC Radio stations. The pips were introduced in 1924 and have been generated by the BBC since 1990 to mark the precise start of each hour. Their utility in calibration is diminishing as digital broadcasting entails time lags. There are six pips (short beeps) in total, which occur on each of the 5 seconds leading up to the hour and on the hour itself. Each pip is a 1 kHz tone (about halfway between
BBC Radio Cambridgeshire from two multiplexes in Cambridgeshire — a rarity for BBC local radio stations, as some do not yet broadcast on digital. Since 30 November 2002, the NOW Digital Peterborough 12D multiplex has come from Peterborough (main signal), plus Hitchingbrooke Hospital (Huntingdon). A planned DAB transmitter for Stamford (in south Lincolnshire) was not launched for this multiplex. NOW Peterborough covers Peterborough, Huntingdon, Stamford and Spalding. Since 30 September 2004, the NOW Digital Cambridge 11C multiplex has come from Madingley. BBC Asian Network is transmitted for Peterborough and North Cambs on 1449 kHz from the Gunthorpe, Peterborough mast. This was originally BBC