DCF77 is a longwave time signal and standard-frequency radio station, in service as a standard-frequency station since 1 January 1959; date and time information was added in June 1973.
DCF77 is a longwave time signal. This is in service as a standard. DCF77 is standard-frequency radio station-frequency station since 1 January 1959. This is in service as a standard. Date was added in June 1973. Time information was added in June 1973.