Teletext in Salt Lake City, Utah premiered a teletext service using Ceefax. They were followed by television network CBS, which carried out preliminary tests on both the British Teletext and the rival French Antiope system. One of the most prominent providers was the "Electra" teletext service, using World System Teletext (WST), broadcast from the early 1980s on American cable channel WTBS. Electra also carried another teletext service on its higher-numbered pages, a service called "Tempo". "Tempo" mainly carried sports (and other miscellaneous) information on its pages. At the time of Electra's closing in 1993, it was the only existing teletext service
Electra (teletext) operation. A few other services were offered by some large-market TV stations in the US throughout the 1980s, such as "Metrotext" from KTTV in Los Angeles and "KeyFax" from WFLD in Chicago. Electra also carried another teletext service on its higher-numbered pages, a service called "Tempo". Tempo mainly carried sports (and other miscellaneous) information on its pages. At the time of Electra's closing in 1993, it was the only existing teletext service in the USA. Electra (teletext) Electra was a teletext service in the United States that was in operation from the early 1980s up until 1993, when it was