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 1 were configured to allow DJs to operate the equipment themselves and play their own records and jingle cartridges (called self-op). This was a departure from traditional BBC practice, where a studio manager would play in discs from the studio control cubicle. Due to needle time restrictions, much of the music was played from tapes of BBC session recordings. The DJs were assisted by one or more technical operators (TOs) who would set up tapes and control sound levels during broadcasts. In 1985, Radio 1 moved across the road from Broadcasting House to Egton House. The station moved to Yalding House