Anders: What antenna are you using that you call the "mini-whip?"
Specifically, how long is the "whip?" Thanks, --- Graham == On Mon, Mar 6, 2017 at 3:57 AM, Anders Wallin <anders.e.e.wal...@gmail.com> wrote: > FWIW, for fun I measured the LF stations MSF, DCF, and TDF just a few days > ago. The signals look like this from our site: > http://www.anderswallin.net/wp-content/uploads/2017/02/MSF.jpg > http://www.anderswallin.net/wp-content/uploads/2017/02/DCF.jpg > http://www.anderswallin.net/wp-content/uploads/2017/02/TDF.jpg > > I guess the +/- 40 Hz side-bands on TDF are by design? > > I have an SDR set up also, so the gnu-radio demodulators could run in > parallel on each of these, and the sdr sampling clock could come from a > local clock. One more project on the to-do list... > > Anders > > > On Mon, Mar 6, 2017 at 12:42 AM, Iain Young <i...@g7iii.net> wrote: > > > 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 -- time-nuts@febo.com > > To unsubscribe, go to https://www.febo.com/cgi-bin/m > > ailman/listinfo/time-nuts > > and follow the instructions there. > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.