Greenwich Time Signal
SERIES OF SIX SHORT TONES BROADCAST AT ONE-SECOND INTERVALS BY MANY BBC RADIO STATIONS
BBC Pips; BBC pips; Greenwich time signal; Greenwich Pips; Crashing the pips; Greenwich time pips
The Greenwich Time Signal (GTS), popularly known as the pips, is a series of six short tones (or "pips") 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.