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
In Our Time (radio series) In Our Time (radio series) In Our Time is a live BBC radio discussion series exploring the history of ideas, presented by Melvyn Bragg since 15 October 1998. It is one of BBC Radio 4's most successful discussion programmes, acknowledged to have "transformed the landscape for serious ideas at peak listening time". As of 21 June 2018, 808 episodes have been aired and the series attracts a weekly audience exceeding two million listeners. The series, devised and produced by Olivia Seligman (with others) and currently produced by Simon Tillotson with Victoria Brignell, runs weekly throughout the year on BBC Radio