Hi, I got a bit curious, so I dug up the manual (Available from Orolia that Spectracom is part of):
https://www.orolia.com/sites/default/files/document-files/8161_manual.pdf It is apparent that the reference oscillator is actually free-running but compared to the WWVB, so you manually tune it to make the strip-chart become more of a flat line. This is interesting, because the receiver locks up another 10 MHz oscillator. Now, there is a 45 degree (2.1 micro) modulation on the WWVB signal, that shows up as time-tags on the strip-chart, so it is not trivially so that you just replace the simpler 10 MHz oscillator with the more advanced, unless you can live with that modulation at which time it is a fairlly trivial hack. You can be a bit more cunning to add hardware to compensate the modulation, but I wonder if that is what is done. To figure it out, one has to pop the lid to figure out. That is however not for me to do. Anyway, I thought the manual pointer and quick analysis would maybe be appreciated. Good luck! Cheers, Magnus On 2020-10-04 09:37, Kirk Bailey wrote: > I ran across an interesting widget in my ongoing "find the bottom of the > pile" task. Has a label indicating it was modified for "WWVB Continuous > Monitored". I thought these were all for WWVB, so what does "Continuous > Monitored" mean? See attached pic. If anyone is interested in being the > new owner please contact me directly. > > Thanks, > > Kirk Bailey > bai...@peak.org > > _______________________________________________ > 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.