About the Time Signal
16
Radio Wall Clock CK 1603
About the Time Signal
General Information
This radio wall clock obtains its radio signal 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.
As soon as the clock is supplied with current from the battery, it switches to receiving
mode and searches for the signal from the DCF77 transmitter. If the time signal has
been received with sufficient strength, the hands set themselves to the correct time.
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 device continues to run precisely and then switches to
receiving mode again at the next scheduled time.
Tips for good reception
Hang or place the radio wall clock as near as possible to a window.
Maintain distance from TV sets, computers, and monitors. Base stations from
cordless telephones should also not be located in immediate proximity to the
clock.
The reception is generally better at night. If, during the day, the clock had no
reception, it may well be that the signal will be received immediately and at full
strength in the evening hours.
The weather, e.g. a heavy storm, can cause interference with the reception.
Temporary shutoffs of the transmitter can sometimes happen, e.g. because of
maintenance work.
Inserting/changing battery
You need an LR6 (AA), 1.5 V battery to use the product.
−
Place the battery on the bottom of the battery compartment as shown.
Pay attention to the correct polarity (+/-).
As soon as the battery is inserted the clock switches to receiving mode – see next
chapter.
Druckbuch Funkwanduhr CK 1603.indb 16
24.03.2016 13:15:55
Summary of Contents for CK 1603
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