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 Wales BBC Radio Wales BBC Radio Wales is BBC Cymru Wales's national English language radio station. The station began broadcasting on 13 November 1978, following the demise of the 'Radio 4 Wales' service (previously the Welsh Home Service) and BBC Radio 4's transformation into a national network, moving from medium wave to long wave. The station's editor is Colin Paterson. In November 1978, BBC Radio Scotland and BBC Radio Wales were created as distinct stations on the former Radio 4 Scottish and Welsh medium wave opt-out frequencies of 810 and 882 kHz. They were part-time initially, broadcasting for only 20 hours