Greenwich Time Signal 19:00. By 19:45 the same day the power supply was repaired and the 20:00 pips were broadcast as normal. Many radio broadcasters around the world use the Greenwich Time Signal as a means to mark the start of the hour. The pips are used in both domestic and international commercial and public broadcasting. Many radio stations use six tones similar to those used by the BBC World Service; some shorten it to five, four, or three tones. Greenwich Time Signal The Greenwich Time Signal (GTS), popularly known as the pips, is a series of six short tones broadcast at one-second
BBC Radio 4 in eastern and south eastern counties of Ireland, the north of France and Northern Europe. It is also available through Freeview, Sky, Virgin Media and on the Internet. Its sister station, BBC Radio 4 Extra (formerly "BBC Radio 7"), complements the main channel by broadcasting repeats from the Radio 4 archive, extended versions of Radio 4 programmes and supplements to series such as "The Archers" and "Desert Island Discs". It is notable for its news bulletins and programmes such as "Today" and "The World at One", heralded on air by the Greenwich Time Signal "pips" or the chimes of Big