Hello Peter, While monitoring DCF77, MSF, and other longwave time signals during the DST change this weekend, I did not observe any irregularities. I don't have a recording of the raw signals, but here is the decoded data, including reception timestamps in the last column:
BBC: 00:58 1572137879.092676 DCF77_PM: 2019-10-27 02:58 1572137880.001366 DCF77_AM: 2019-10-27 02:58 1572137880.001398 TDF: 2019-10-27 02:58 +0200 1572137880.001817 MSF: 2019-10-27 01:58 +0100 1572137880.002950 RBU: 2019-10-27 03:58 +0300 1572137880.006877 BBC: 00:59 1572137939.092602 DCF77_PM: 2019-10-27 02:59 1572137940.001373 DCF77_AM: 2019-10-27 02:59 1572137940.001407 TDF: 2019-10-27 02:59 +0200 1572137940.001608 MSF: 2019-10-27 01:59 +0100 1572137940.002951 RBU: 2019-10-27 03:59 +0300 1572137940.006869 BBC: 01:00 1572137999.092559 DCF77_PM: 2019-10-27 02:00 1572138000.001382 DCF77_AM: 2019-10-27 02:00 1572138000.001419 TDF: 2019-10-27 02:00 +0100 1572138000.001550 MSF: 2019-10-27 01:00 +0000 1572138000.002903 RBU: 2019-10-27 04:00 +0300 1572138000.006862 BBC: 01:01 1572138059.092783 DCF77_PM: 2019-10-27 02:01 1572138060.001379 DCF77_AM: 2019-10-27 02:01 1572138060.001415 TDF: 2019-10-27 02:01 +0100 1572138060.001530 MSF: 2019-10-27 01:01 +0000 1572138060.002906 RBU: 2019-10-27 04:01 +0300 1572138060.006861 BBC is the phase modulation on their 198 kHz AM transmitter, encoding UTC. DCF77_PM and _AM are the phase and amplitude modulation of DCF77 on 77.5 kHz. TDF is the French 162 kHz signal. MSF is 60 kHz from the UK. RBU is 66⅔ kHz from Russia, where no DST change was made this weekend. The last column is the reception time as a Unix timestamp, w.r.t. a LORAN-synchronized clock. Clearly, the BBC signal is about 0.9 s early; the others are slightly late due to propagation time from their transmitters to my receiver location (Enschede. The Netherlands). Regards, PieterTjerk, PA3FWM On Mon, Oct 28, 2019 at 06:26:05PM +0000, Peter Vince wrote: > Was anyone here monitoring DCF77 during the summer-time change this > weekend? An acquaintance has recently modified his code that receives MSF, > and noticed an anomaly - his log shows the minute 02:59 CEST was missing. > It seems tremendously unlikely that there was any kind of fault with DCF, > but sadly he doesn't have a recording of the actual RF signal, just his > decoder output. So I was just wondering if anyone else noticed anything > untoward, or maybe even, does anyone have a recording of the signal itself? > > Thank you, > > Peter > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.