Yes, there is a utility http://www.dxshell.com/jtsync.html that will
do exactly what you want. It syncs either via ntp or if there is no
network it is using a very clever methode do average received FT8/FT4
signals to set your clock. Extreme late or early transmissions in
time are ignored.
73s
Wolfgang OE1MWW
-------- Ursprüngliche Nachricht --------
Von: Paul Bramscher via wsjt-devel <wsjt-devel@lists.sourceforge.net>
Datum: So., 18. Juli 2021, 04:14
An: wsjt-devel@lists.sourceforge.net
Cc: Paul Bramscher <pfb...@comcast.net>
Betreff: [wsjt-devel] Possible feature request, time skew notification?
I was at a monthly outdoor ham event in the greater St. Paul/Minneapolis
area that's drawn loyal attendance the past few years. An operator
setup FT8 outdoors, but had some issues getting it to decode. We could
tell it was getting sound from his port, but there was no decoding.
He was using Windows, whereas I'm Linux only so wasn't much help.
Another ham suggested he compare his system clock with his cellphone,
and that fixed it. I believe he said he was off by 5+ seconds.
I'm wondering whether it might be possible, algorithmically to somehow
detect that a person's clock may be out of sync and present a
notification message. Of course there's the DT/Time Delta column when
you are able to decode. But, presumably, he had reached the point of no
return.
I don't know how this might be possible without an accurate reference
clock -- but possibly based on the average timing of heard signals, or
some sort of signature within them, to cause a message to the user that
s/he may want to check their clock's accuracy?
Just wondering what might be possible in this regard, and I suspect it
would help portable users, especially those who've been offline for a
number of days/etc. and their system clocks had degraded.
73, KD0KZE / Paul
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