TFA Dostmann 35.1068.IT Bedienungsanleitung Seite 53

removed from all the units and reset from step 1.
6. Once the external data has been received and displayed on the weather station, the
DCF time code reception is automatically started. This takes typically between 3-5
minutes in good conditions.
NOTE FOR RADIO-CONTROLLED TIME DCF:
The time base for the radio-controlled time is a caesium atomic clock operated by the
Physikalisch Technische Bundesanstalt Braunschweig. It has a time deviation of less than
one second in one million years. The time is coded and transmitted from Mainflingen near
Frankfurt via frequency signal DCF-77 (77.5 kHz) and has a transmitting range of
approximately 1,500 km. Your radio-controlled clock receives this signal and converts it to
show the precise time. Changeover from summer time or winter time is automatic. The
quality of the reception depends mainly on the geographic location. Normally there should
be no reception problems within a 1,500 km radius around Frankfurt.
DCF reception is done twice daily at 02:00 and 03:00 am. If the reception is not successful
at 03:00 am, then the next reception takes place the next hour and so on until 06:00am, or
until the reception is successful. If the reception is not successful at 06:00 am, then the next
attempt will take place the next day at 02:00 am.
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