TFA Dostmann 30.3037.01.IT Manual De Instrucciones página 47

approximately 1,500 km. Your radio-controlled temperature station receives this signal
and converts it to show the precise time in summer or wintertime.
The quality of the reception depends greatly on the geographic location. In normal cases,
there should be no reception problems within a 1,500 km radius of Frankfurt.
DCF reception is done twice daily at 02:00 and 03:00 am. If the reception is not
successful at 03:00 am, then the next reception takes place the next hour and so on until
06:00am, or until the reception is successful. If the reception is not successful at 06:00
am, then the next attempt will take place the next day at 02:00 am.
If the tower icon flashes, but does not set the time or the DCF tower does not appear at
all, then please take note of the following:

Recommended distance to any interfering sources like computer monitors or TV
sets is a minimum of 1.5 - 2 meters.

Within ferro-concrete rooms (basements, superstructures), the received signal is
naturally weakened. In extreme cases, please place the unit close to a window
and/ or point its front or back towards the Frankfurt transmitter.
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