I find it odd and dismissive that you have not answered the pending
question or commented on your time synchronization method ?
vk4tux
On 20/4/21 2:21 am, Rich - K1HTV wrote:
Bill - W2PKY,
Thanks for the idea of playing back the WAV files which had few or no
decodes. I played the WAV files back and they sound normal, full of
signals but still decode few if any of them when I play them back for
decoding.
I wonder if WSJT-X has a shared memory buffer which another program
had access to which caused part of the decoding part of the program to
produce the poor decodes. Another thing that I noticed was that when
there were FT8 decodes on the odd cycles, at times most of the decoded
signals had a DT of 0.1 then in some of the next receive cycles almost
all decoded stations had a DT of 0.4 seconds. Then they would be back
to 0.1 second DT numbers. However, when the problem occured, as I
checked the PC clock a number of times using the "time.is
<http://time.is>" URL, it indicated "Your time is Exact" usually
within 1- milliseconds of exact.
My station is band switching and decoding 24/7. I've left all normally
used programs running but have shut down Chrome. So far, in the past
few days the problem has not re-occurred. Maybe Chrome is the culprit.
The last time when the problem occured, Chrome was consuming over 1 GB
of RAM, still far less than the available 16GB but still a lot. Once
the problem starts, shutting down Chrome and apps doesn't fix it, only
a reboot of the computer.
Thanks also for the suggestion about checking if standby memory is
being used when the problem occurs. Will have to do that.
73,
Rich - K1HTV.
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