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
Manana Island Sound Signal Station the trumpet was moved to the Portland Head Light. Originally administratively part of Monhegan Island Light, the fog signal was placed under separate administration in 1876. In 1877 a new Daboll trumpet was installed. It was replaced in 1912 by an air siren, and at some point a radio beacon was added to the site. The station was automated in 1986, and the radio tower was removed in 1995. Manana Island Sound Signal Station The Manana Island Sound Signal Station is an active fog signal station on Manana Island, Maine, United States. Established in 1855, it is one of the