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So funktioniert die Funkübertragung
Der Zeitzeichen-Sender DCF77 strahlt auf seiner
Langwellenfrequenz von 77,5 kHz die genaue und
offizielle Uhrzeit der Bundesrepublik Deutschland
aus.
Der Sender steht in Mainflingen bei Frankfurt am
Main und versorgt mit seiner Reichweite von bis zu
2000 km die meisten funkgesteuerten Uhren West-
Europas mit den erforderlichen Funksignalen.
Die tatsächliche Reichweite schwankt und ist u. a.
auch abhängig von der Tages- sowie der Jahres-
zeit. So ist es durch Überreichweiten z.B. vorge-
kommen, dass sich Funk-Uhren in Nordamerika auf
den Sender DCF77 eingestellt haben. In ungünsti-
gen Fällen kann die Reichweite aber auch unter-
halb von 2000 km liegen.
Sobald der Wecker von den Batterien mit Strom
versorgt wird, schaltet er auf Empfang und sucht
standardmäßig zunächst das Signal vom Sender
DCF77.
Mit freundlicher Genehmigung durch die
Physikalisch-Technische Bundesanstalt
E45401_Funkwecker.book Seite 9 Montag, 10. Dezember 2012 4:45 16
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  • I have 3 of these clocks and they all keep changing to the wrong time here in the UK, they keep displaying 1hr ahead of local time. I have looked and they also keep swapping to DCF as the time signal. Submitted on 31-8-2018 at 13:07

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