ADE CK 2301 Instrucciones De Operación página 40

About the time signal
transmitter DCF77
The radio-controlled clock receives radio signals from
the DCF77 time signal transmitter. This broadcasts
the precise and official time of the Federal Republic
of Germany on the long-wave frequency of 77.5 kHz.
The transmitter is located in Mainflingen near
Frankfurt am Main and, with its range of up to
2000 km, supplies the majority of radio-controlled
clocks in western Europe with the necessary radio
signals.
When you power up the clock, it switches to
Reception mode and searches for the signal from the
DCF77 transmitter. If the time signal is received in
sufficient strength, the time is displayed.
The clock switches on multiple times daily and
synchronises the clock time with the radio signal
from the DCF77 transmitter. In the event the signal
is not received, e.g. during a strong storm, the clock
continues to run precisely and then switches to
receiving mode again at the next scheduled time.
40
CK 2301 DCF radio-controlled clock