> I believe what they were doing is applying a simple 180 deg phase shift to > the carrier (BPSK) during certain one second timecode intervals.
I suppose this will help coherent receivers somewhat, but I was expecting something DCF77-like. A pity. Thanks for posting your data. You certainly have good WWVB reception. Attached is a plot of the real part of the demodulated signal after carrier estimation. They change the phase 100 ms after the second marker, halfway between the second marker and a potential change in amplitude back to full power. So the phase transition always occurs in the middle of a low-power interval. Cheers, Peter
<<attachment: wwvb-phase.png>>
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