Steve Kostecke wrote: > Spoon wrote: > >> In my situation, I don't care what time it is, but my clock needs >> to tick at the correct rate. > > The least expensive means of getting your clock to tick at the correct > rate is to synchronize it to the ubiquitous time-base known as UTC. > >> I think I can't use GPS because the computer is located in a server >> room underground. > > Can you run an antenna cable down to the bunker? That would allow you so > place an antenna top-side and the GPS receiver underground: > > http://www.meinberg.de/english/products/gps170pci.htm
As far as I could tell, that board costs over 1000 USD. Or am I mistaken? > http://www.microsystemes.com/PDF%20FICHES%20PRODUITS/fp0156.pdf > http://www.spectracomcorp.com/Home/Products/BuslevelTimingBoards/TSATPCIGPSTimingBoard/tabid/378/Default.aspx Do you know the price of these solutions? > If you can receive CDMA cellphone signals in the bunker you could use a > product such as the Endrun Technologies PraecisCT: > > http://www.endruntechnologies.com/network-time-source.htm Do you know the price of this solution? Is the signal sent in the clear, or do I need some form of monthly subscription? >> Are there other PPS sources? I've read about rubidium and cesium clock >> sources. How expensive are they? > > Here's one rubidium oscillator (you'd have to package it into a complete > solution): Sanford Research PRS10 $1495 US / $1695 international Atomic clocks seem to be out of the question: My budget is 250 USD per unit maximum. > Here are some links for complete solutions (you have to request prices): > http://www.bvsystems.com/Products/Lab/Rhino/rhino.htm > http://www.labx.com/v2/spiderdealer2/vistasearchdetails.cfm?LVid=3345327 I'm looking for something I could attach / plug into an existing system. Regards. _______________________________________________ questions mailing list [EMAIL PROTECTED] https://lists.ntp.isc.org/mailman/listinfo/questions
