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 Wales per week, and relaying Radios 2 and 4 at other times. However the groundwork had been laid for the stations to become important, respected full-time services. Radio Wales now broadcasts for 20 hours a day with a simulcast of the BBC World Service after closedown every night. BBC Radio Wales was preceded in the autumn of 1978 by four experimental local radio stations broadcasting for a single week: Radio Wrexham, Radio Deeside, Radio Merthyr and Radio Rhondda. They were broadcast using an RTÉ Outside Broadcast transmitter. The first editor of BBC Radio Wales was Teleri Bevan, a former BBC Radio