SP ensures that Fröken Ur always tells the right time

Nya och 'Gammla' FrökenFröken Ur is the Swedish speaking clock service. SP's Time and Frequency laboratory provides the time signal, while Telia distributes it from the laboratory to callers.

Fröken Ur is a telephone service, delivering the time in spoken form to callers.  Telia distributes the signal to callers, while SP's Time and Frequency laboratory in Borås produces the time information and delivers it to Telia's network. 

History

Historically, a speaking clock time signal service has been available in Sweden since 1934, when the first machine for delivering the spoken output was installed.  Any telephone subscriber could phone it to hear the time at any time of the day, which is the service that is still provided. 
In 2000, the service was transferred from Telia's premises in Stockholm to SP's time and frequency laboratory in Borås, which meant that it was directly connected to the atomic clocks that maintain the country's national time scale. 

Fröken Ur's information

Fröken Ur indicates the hour, minute and every tenth second by means of a 1 kHz tone.  Once a minute, the announcement also includes the day, month and year, while the changeovers between normal and summer time are announced one day before and one day after the changeover dates. 

The number and the voices

The telephone number to the service is 90 510.  Since the start, the voice has been provided by Eva Ulvby (1934-1956), Berit Hofling (1956-1968), Ebba Beckman (1968-2000) and Johanna Östlund (2000-. . . . ).   

Time and frequency calibration via GPS

For calibration of more accurate time and frequency standards, we offer on-site calibration using the GPS satellite system as an intermediate reference. This requires installation of equipment for reception and storage of data from the GPS. Read more...

Measurement Technology

Most of SP's measurement technology activities are gathered here. We are also a national metrology centre, and are among the world leaders in traceable measurement technology. Read more...

Time and frequency

Our activities cover calibration of various types of time and frequency measuring instruments.Read more...

Related Information

Technical Areas

Measurement Technology

Documents

See also

TeliaDokumentet öppnas i ett nytt fönsterTekniska museetDokumentet öppnas i ett nytt fönster

Contact Persons

Sven-Christian Ebenhag

Phone: +46 10 516 55 69

Carsten Rieck

Phone: +46 10 516 54 40

SP Technical Research Institute of Sweden, Box 857, SE-501 15 Borås Phone +46 10-516 50 00, E-mail info@sp.se