I have an NTP server that uses a Trimble GPS receiver (Accutime 2000, p/n - 39091-00, ROM 3.06) that has fallen prey to WNRO. Just wondering if there are any Trimble (or other brand) receivers that have TSIP serial comms that are available for a reasonable price? Any help appreciated. Skip Withrow

 Björn 

Hi Skip, Are your NTP-server using the Palisade ref clock driver? http://doc.ntp.org/current-stable/drivers/driver29.html If it’s using the event-poll mode you might need a receiver supporting that. I have not seen that outside the Palisade/Accutime family. Can you fudge the time1 all the way up to 1024wk (translated into seconds) to compensate for the wnro with your current receiver? # Set packet delay fudge 127.127.29.0 time1 0.020 - Björn Sent from my iPhone > On 12 Jan 2020, at 04:55, Skip Withrow <skip.withrow@gmail.com> wrote: > > I have an NTP server that uses a Trimble GPS receiver (Accutime 2000, > p/n - 39091-00, ROM 3.06) that has fallen prey to WNRO. Just > wondering if there are any Trimble (or other brand) receivers that > have TSIP serial comms that are available for a reasonable price? Any > help appreciated. > > Skip Withrow > > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there.

On Sun, Jan 12, 2020 at 3:55 AM Skip Withrow <skip.withrow@gmail.com> wrote: > > I have an NTP server that uses a Trimble GPS receiver (Accutime 2000, > p/n - 39091-00, ROM 3.06) that has fallen prey to WNRO. Just > wondering if there are any Trimble (or other brand) receivers that > have TSIP serial comms that are available for a reasonable price? Any > help appreciated. > > Skip Withrow > As TSIP is a Trimble proprietary protocol, to the best of my knowledge it is only found on Trimble devices. Does your NTP server only work with TSIP or might it be able to use "standard" NMEA ? possible with PPS ? Cheers Arne

  Björn

ntpsec, a fork of the classic NTP distribution, supports an option to compensate for the 1024 week rollover: https://docs.ntpsec.org/latest/ntp_conf.html time1 sec Specifies a constant to be added to the time offset produced by the driver, a fixed-point decimal number in seconds. Each "g" on the end of the constant adds the number of seconds in a 10-bit GPS era; each "G" adds the number of seconds in a 13-bit GPS era. On Sun, Jan 12, 2020 at 3:10 AM Björn <bg@lysator.liu.se> wrote: > Hi Skip, > > Are your NTP-server using the Palisade ref clock driver? > > http://doc.ntp.org/current-stable/drivers/driver29.html > > If it’s using the event-poll mode you might need a receiver supporting > that. I have not seen that outside the Palisade/Accutime family. > > Can you fudge the time1 all the way up to 1024wk (translated into seconds) > to compensate for the wnro with your current receiver? > > # Set packet delay > fudge 127.127.29.0 time1 0.020 > > - > > Björn > > Sent from my iPhone > > > On 12 Jan 2020, at 04:55, Skip Withrow <skip.withrow@gmail.com> wrote: > > > > I have an NTP server that uses a Trimble GPS receiver (Accutime 2000, > > p/n - 39091-00, ROM 3.06) that has fallen prey to WNRO. Just > > wondering if there are any Trimble (or other brand) receivers that > > have TSIP serial comms that are available for a reasonable price? Any > > help appreciated. > > > > Skip Withrow > > > > _______________________________________________ > > time-nuts mailing list -- time-nuts@lists.febo.com > > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > > and follow the instructions there. > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. >