So, back to the practical matter of getting the time right faced with lack
of WWV/WWVH, no GPS NMEA sentences to plunder, no superlative chronometer
to reference.
Here's something that you can try --- turn off time sync on your computer.
Stop any WSJTX app you have running. Go into control panel, or use a
adminified command prompt to get ready to set your computer time to some
minute or 0:30 boundary (the HOURS and MINUTES DON'T MATTER). Listen to the
WSJTX frequency, and when you hear everyone start transmitting, set your
time to the 00 or 30.
Does decode still work for you?
My hands-on investigation yielded that decodes worked when:
- I was ABOUT 2 minutes fast on my PC clock.
- I was ABOUT 3:15 fast on my PC clock.
- I was ABOUT 3:30 minutes fast on my PC clock
(don't forget to stop and restart WSJTX each time you change the time)
Empirically, it appears that the time sync is important so you're able to
hear most of the beginning of 15 second transmission interval. However you
do it.
-Brian N9ADG
On Thu, Dec 7, 2017 at 6:21 PM, Dave Corsello <kd2...@gmail.com> wrote:
> You’re right. In that regard, depending on the circumstances, digital
> modes might not be ideal, especially because the transmissions can be long.
>
>
>
> Dave
>
> KD2JIP
>
>
>
> *From: *Ria Jairam <rjai...@gmail.com>
> *Sent: *Thursday, December 7, 2017 8:41 PM
> *To: *WSJT software development <wsjt-devel@lists.sourceforge.net>
> *Subject: *Re: [wsjt-devel] DXPedition System Clock Sync
>
>
>
> I would stay off the air. No need to alert people to where supplies are!
>
>
>
> Ria, N2RJ
>
>
>
> On Thu, Dec 7, 2017 at 8:30 PM, Gary McDuffie <mcduf...@ag0n.net> wrote:
>
> >
>
> >
>
> >> On Dec 7, 2017, at 1:55 PM, Dave Corsello <kd2...@gmail.com> wrote:
>
> >>
>
> >> Given the current state of geo-politics, I think the probability of GPS
> being knocked out by EMP is greater than zero. So I thought it was
> worthwhile to continue the discussion.
>
> >
>
> > If that were to happen, you wouldn’t likely be on the air for multiple
> reasons!
>
> >
>
> > Gary
>
> > ------------------------------------------------------------
> ------------------
>
> > Check out the vibrant tech community on one of the world's most
>
> > engaging tech sites, Slashdot.org! http://sdm.link/slashdot
>
> > _______________________________________________
>
> > wsjt-devel mailing list
>
> > wsjt-devel@lists.sourceforge.net
>
> > https://lists.sourceforge.net/lists/listinfo/wsjt-devel
>
>
>
> ------------------------------------------------------------
> ------------------
>
> Check out the vibrant tech community on one of the world's most
>
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>
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>
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>
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>
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>
>
>
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