On 15/05/2019 15:06, Derek Turner via wsjt-devel wrote:
The solution was actually quite simple :- reverse the byte order of
the eight bytes starting at the 32nd byte and then use .Net
BitConverter.ToDouble.
Hi Derek,
glad you are back on track.
Not trying to belittle your project but have you considered using the
Meinberg NTP Client to maintain your PC synchronization with UTC, it
will do virtually continuous corrections and you will not suffer from
the drifting local realtime clock issues that seem to be at the root of
your need to track DT values.
Note that there will always be a range of observed DT values. Even if
every station had perfect UTC synchronization there would be
contributions from processing and audio sub-system latencies, DSP
latencies transmitters and receivers, propagation delays, and latencies
due to desktop PC operating systems not being optimized for real-time
deadlines.
73
Bill
G4WJS.
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