Simon Blake wrote:
On Wed, May 05, 2004 at 12:36:47PM +1200, Russell Fulton said:
Hi, we have discovered that most of the off campus sources we had for our NTP service are no longer there. Anybody willing to let us connect to their servers?
Setting up a GPS NTP source has been on the list of things I've wanted to get done for a while now - I've got several rooftop mounted PC's that have stunning views of the heavens. If anybody has any recommendations on a reasonably priced GPS based NTP appliance, or even what serial GPS unit I should buy to interface simply with ISC NTP, then I'm all ears.
A good GPS unit for timing is Trimble's Acutime 2000, which is a dedicated timing GPS receiver that runs in 'overdetermined clock mode', i.e. it assumes it is stationary. http://www.trimble.com/acutime2000.html Their starter kit has all you need, bit pricy tho. If you want an appliance Truetime are the most popular, there's also EndRun Technologies, http://www.endruntechnologies.com/time-servers.htm. Note that although their CDMA units used to work in NZ, they mysteriously stopped a year or more ago, you should stick to GPS. Presumably Telecom changed something in the 027 network. Stephen. -- ----------------------------------------------------------------------- Stephen Donnelly BCMS PhD email: sfd(a)endace.com Endace Technology Ltd phone: +64 7 839 0540 Hamilton, New Zealand cell: +64 21 1104378 -----------------------------------------------------------------------