Dcf77

DCF77

DCF77 is a longwave time signal and standard-frequency radio station. Its primary and backup transmitter are located at 50°0′56″N 9°00′39″E / 50.01556°N 9.01083°E / 50.01556; 9.01083 in Mainflingen, about 25 km south-east of Frankfurt am Main, Germany. It is operated by Media Broadcast GmbH (previously a subsidiary of Deutsche Telekom AG), on behalf of the Physikalisch-Technische Bundesanstalt, Germany's national physics laboratory. DCF77 has been in service as a standard-frequency station since 1959; date and time information was added in 1973. The timestamp sent is either in UTC+1 or UTC+2 depending on daylight saving time.