On 05/03/17 20:23, paul swed wrote:
Gilles what signal is that at 162KHz. A European station? Nice thats its C controlled.
That's TDF from France. Their equivalent of WWV/MSF/DCF. Used to carry the AM Station France Inter as well, but that went when France turned off all LW, MW, and LORAN stations at the end of 2016. The Time Signal is Phase Modulated (I have a gnuradio decoder which works very well if anyone is interested) See https://en.wikipedia.org/wiki/TDF_time_signal and https://en.wikipedia.org/wiki/Allouis_longwave_transmitter With no AM modulation, there are obvious benefits with regards to using it as a frequency reference. Average phase and frequency deviation is zero over 200msec (see link above for details) Iain PS, The signal is used by the French railways SNCF, the electricity distributor ENEDIS, airports, hospitals according to the Allouis link above _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
