Max, Thanks for the reply. I should have mentioned that I am using a Mac. I have synched to time.nist.gov <http://time.nist.gov/> and the time.is <http://time.is/> app shows that I am dead on.
John WA1EAZ > On Jan 16, 2017, at 10:13 PM, M. George <[email protected]> wrote: > > PC Clock drift can be quite bad as we all know. The default NTP server sync > interval for Windows 10, is once a week. So your clock can be way off by the > time you sync again. With a one time NTP sync, you can still be off into the > 100 ms range. I suspect some of the JST related software etc... might force > a sync at startup and or do NTP server syncs on their own? Someone else will > need to chime in on that. > > The best time sync you are going to get for Windows and Linux / BSD based > operating systems will be us use the full on NTP client. For windows, > Meinberg has a nice graphical client that installs and sets itself up as a > service and disables the windows NTP client service. During the Meinberg NTP > install, you have an option to draw from the NTP pool of NTP servers and you > can also type in your own preferred NTP server list. The full NTP client > does more than just sync your clock... over time it will calculate the drift > of your clock and discipline your clock automatically between sync checks to > your selected NTP servers. The drift is calculated in PPM and for the > curious you can see how bad your clock is. > > Here is the link for the Win32 install of the Meinberg client (free): > > <x-msg://1/goog_605187876> > https://www.meinbergglobal.com/english/sw/ntp.htm#ntp_stable > <https://www.meinbergglobal.com/english/sw/ntp.htm#ntp_stable> > > I run 3 GPS disciplined NTP servers (3 separate GPS receivers) here at my QTH > and if you want, you are welcome to use time.nc7j.com <http://time.nc7j.com/> > as one of your NTP servers. On this end, time.nc7j.com > <http://time.nc7j.com/> is accurate into the nano second range as compared to > the GPS on board atomic clocks. Via NTP UDP sync over the Internet, the best > you will typically do is get down into the lower microsecond range... and > far more accurate than any thing most would ever need. time.nc7j.com > <http://time.nc7j.com/> is also a member of the NTP pool and you can see if > it's up and running be going to this link: > http://www.pool.ntp.org/scores/time.nc7j.com > <http://www.pool.ntp.org/scores/time.nc7j.com> The chart here doesn't show > the accuracy of the time.nc7j.com <http://time.nc7j.com/>, but it shows the > ping offset from LA to Utah and it's normal to vary +- 10ms. Your mileage > will vary with your round trip ping times to any NTP server, but over time, > NTP will do an amazing job of figuring out your PC clock drift and then disciplining it on the fly. > > For the totally 'time accuracy obsessed', you can install the Meinberg NTP > monitor too and monitor your clock accuracy via logged NTP statistics: > https://www.meinbergglobal.com/english/sw/ntp-server-monitor.htm#download > <https://www.meinbergglobal.com/english/sw/ntp-server-monitor.htm#download> > > The Meinberg apps are GUI's that make native calls to the full NTP install > under the covers and they are totally free and free of any nag related > nonsense. > > If you are running Linux or iOS, you are already running a native NTP client > I suspect and you can read up on how to configure it just like the Meinberg > Windows GUI's do for Windows. > > Max NG7M > > mg > > > > On Mon, Jan 16, 2017 at 7:30 PM, stengrevics <[email protected] > <mailto:[email protected]>> wrote: > My clock is synched to time.nist.gov <http://time.nist.gov/>. But, when I > transmit on MSK144, I have > a delay of 900 ms that pushes my transmission into the next sequence. Any > thoughts? > > Thanks, > > John > WA1EAZ > > > > -- > View this message in context: > http://elecraft.365791.n2.nabble.com/WSJT-X-MSK144-Transmit-Delay-tp7625818.html > > <http://elecraft.365791.n2.nabble.com/WSJT-X-MSK144-Transmit-Delay-tp7625818.html> > Sent from the Elecraft mailing list archive at Nabble.com. > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > <http://mailman.qth.net/mailman/listinfo/elecraft> > Help: http://mailman.qth.net/mmfaq.htm <http://mailman.qth.net/mmfaq.htm> > Post: mailto:[email protected] <mailto:[email protected]> > > This list hosted by: http://www.qsl.net <http://www.qsl.net/> > Please help support this email list: http://www.qsl.net/donate.html > <http://www.qsl.net/donate.html> > Message delivered to [email protected] > <mailto:[email protected]> > > > > -- > M. George ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
