paul swed write: > I'll add to the comments the spectracoms are phase tracking receivers and > do not work on the new BPSK signal.
When the German PTB made effort to increase the accuracy and reliability of the DCF77 long wave receiver in the 1980s, they implemented thus in a way that old receivers of the original AM modulation would not be affected: https://www.ptb.de/cms/en/ptb/fachabteilungen/abt4/fb-44/ag-442/dissemination-of-legal-time/dcf77/dcf77-phase-modulation.html If I remember correctly then there were some discussions with folks a NIST when they were going to introduce their new modulation scheme, but even though the guys at NIST knew that their approach would break existing receivers, they implemented it anyway that way, even though other (compatible) ways would have been available. :-( Martin _______________________________________________ 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.
