Eurochron EFWS 91 i Bedienungsanleitung Seite 67

No DCF Reception
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Objects or shielding materials (metallised insulated glass windows, reinforced
concrete, etc.) interfere with reception. The weather station is too close to other
electronic devices (TV, computer), cables or mains sockets. Change the site of
setup of the weather station.
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When setting up the weather station in the basement or similar, the DCF
signal is too weak and reception is therefore not possible. The same applies of
the weather station is too far away from the DCF transmitter.
Set the time and date manually; see chapter 12. a).
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The weather station performs several reception attempts for the DCF signal
every day (at 00:00, 03:00, 06:00 and 12:00 hours). Therefore, just leave the
weather station standing for a day; maybe reception will be free of interference
at another time of the day.
A single successful reception per day will keep the deviation of the quartz clock
in the weather station below a second.
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Start search for the DCF signal again; observe chapter 10. b).
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