[time-nuts] DCF77 signal change

Christian Vogel vogelchr at vogel.cx
Wed Mar 28 17:56:26 UTC 2007


Hi Poul-Henning,
> Anyone know the encoding of the weather info ?  I wonder if they
> use the minute bits to designate regions to save bits ?
>   
http://www.ptb.de/en/org/4/44/442/dcf77_kode_e.htm :

"In addition weather data are transmitted, which are supplied by the 
Swiss firm Meteo Time GmbH. The same data are transmitted also by the 
Swiss standard frequency and time signal service HBG (75 kHz)."

HBG claims to be quite DCF77 compatible with their modulation, so hope 
is that it's actually the same encoding. I did not find any info about 
how they encode the information, though :-(

    Chris





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