Dcf Reception - Conrad KW 9110 Bedienungsanleitung

10. DCF Reception

The weather station can receive and evaluate
the so-called DCF signal.
This is a signal which is sent by a transmitter
in Mainflingen (near Frankfurt on the Main).
Its range is up to 1500km and if transmission
conditions are ideal even up to 2000km.
Among other information, the DCF signal
includes the exact time and the date.
This means you do not have to switch
manually between daylight savings time and
normal time.
The first DCF signal search is always carried
out at the first operation (inserting the
batteries), once the detection of the outdoor
sensors is completed (see chapter 9. a)
and b).

The detection of the DCF signal and its evaluation can last a few minutes. Do not
move the weather station during that time. Do not press any buttons on the weather
station.
Do not place the weather station next to electric/electronic devices; do not place it
near cables, plugs or metallic parts.
Bad reception can also be caused by objects like metallized insulated glass,
reinforced concrete construction design, coated special wallpaper or an installation
in cellars.
The normal daily DCF reception search and the adjustment of the quartz clock in the weather
station is carried out every morning around 03.00 a.m. If there is no reception, then the station
searches for reception signals every full hour until 6.00 a.m. If there is still no reception until
06.00a.m. the next signal search takes place the following morning at 03.00 a.m.
A single reception per day is sufficient to keep the daily precision deviation under 1 second.

The signal search at night has the advantage that very few electric/electronic
devices are switched on (television, computers etc.) and atmospheric interference
is also reduced. The reception is thus better and more assured (bigger range to the
DCF transmitter possible).
1500 km
2000 km
51