During the past two weekends, WWVB was using its legacy
AM/pulse-width-modulation signal. As of yesterday 21 March 2013, WWVB has
stopped the twice daily 30 minute segments of this format. Going forward, WWVB
will only be broadcasting using its phase modulation (PM) time code protocol.
Does
There have been numbers of suggested and other approaches. I have been
working about 1 year now on a solution. By the way the AM is still part of
the signal. They have eliminated the 30 minute non-pm segment. I released a
spectracom approach 6 months ago for those that have those. The solution I
