[ntp:questions] Getting NTP to correct only the clock skew
devnull at ntp.isc.org
Sat Apr 14 11:04:44 UTC 2007
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:
As far as I could tell, that board costs over 1000 USD.
Or am I mistaken?
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:
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):
I'm looking for something I could attach / plug into an existing system.
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