Did you move it near a desktop PC or other computer, or move a desktop, or other PC, video screen or switching power supply in the vicinity of the Symmetricom or WWVB antenna?
I am learning the hard way that PC and LED/LCD video screens are horrible generators of noise in the LF spectrum. --- Graham == On Tue, Apr 10, 2018 at 4:15 PM, Tom Van Baak <t...@leapsecond.com> wrote: > > Hi, all of a sudden my Symmetricom comparator/clock has been locking up > on time. > > It has been about a week so far. Did they change the code? Anyone else > seeing that? > > Doug K6JEY > > Hi Doug, > > That would be too good to be true. I asked NIST just now and they report: > "We have not changed the code or power level. All things remain the same." > > So let's debug this on your end. > - What make/model WWVB receiver are you using? > - Can you check the accuracy of the time or frequency output against GPS / > GPSDO. Is it NIST accurate or a bad copy of 60 kHz? > - Did you power-up any new instrument in the past week, one that might > cause 60 kHz harmonics? > - Can you check with 'scope or spectrum analyzer what your environment > looks like near 60 kHz? > - Do you have a curious neighbor who is experimenting with a WWVB > simulator... > > /tvb > > ----- Original Message ----- > From: "Doug Millar via time-nuts" <time-nuts@febo.com> > To: <time-nuts@febo.com> > Sent: Tuesday, April 10, 2018 1:23 PM > Subject: [time-nuts] WWVB Time > > > Hi, all of a sudden my Symmetricom comparator/clock has been locking up on > time. It has been about a week so far. Did they change the code? Anyone > else seeing that? Doug K6JEY > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > and follow the instructions there. > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.