On Mar 11, 2012, at 12:53 PM, John Seamons wrote: > I took a look at this. Pictures and video here: http://jks.com > > I believe what they were doing is applying a simple 180 deg phase shift to > the carrier (BPSK) during certain one second timecode intervals. > Whether there was anything fancier going on or not (like what DCF77 does) I > couldn't tell immediately, although I did make a 192 ksps sound card > recording for future analysis.
Okay, so I did a little analysis of the data. See the website for details. For the few minutes I recorded there was a fixed pattern of phase changes that repeated each minute. They did not seem related to the changing timecode. I tried interpreting the bits as various things, including ascii characters, but no luck. Maybe one of you will figure it out, or I suppose we could ask. _______________________________________________ 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.
