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Physikalisch-Technische Bundesanstalt

Thematic toursQuestions about time > Ihttp://www.ptb.de/en/wegweiser/infoszurzeit/fragen/07.html
Is long-wave time signal transmission still up-to-date?

Compared with time transmission using satellites, long-wave signals have a decisive advantage: They penetrate buildings and their detection is not significantly affected by obstacles such as trees or high-rise buildings. They can be received without an exterior antenna using small ferrite antennas incorporated in radio-controlled clocks. The high broadcasted long-wave power makes possible compact battery- or solar cell-operated radio-controlled clocks without any cable connections. So the long-wave dissemination of time will remain attractive also in the future and continue to be a useful supplement to time transmission via satellite.


© Physikalisch-Technische Bundesanstalt, last update: 2011-08-08, Volker GroƟmann Seite drucken PrintviewPDF-Export PDF