About The Time Signal; General - ADE WS 1601 Mode D'emploi

4. Wait approx. 30 minutes. The base station requires this
time to collect all weather data and to receive radio
signals from the time signal transmitter.

About the Time Signal

General

The radio-controlled clock integrated into the weather
station receives 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 fre-
quency 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 base station is supplied with current (bat-
teries or mains power), it switches to receiving mode and
searches for the signal from the DCF77 transmitter. If the
time signal has been received by the ferrite rod antenna
built into the radio-controlled alarm clock with sufficient
strength, the date and time are shown on the display.
The base station switches on multiple times daily and syn-
chronises the 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 precise-
ly and then switches to receiving mode again at the next
scheduled time.
Weather Station with Wireless Outdoor Sensor WS 1601
51