On Sat, Feb 04, 2006 at 06:27:52AM -0000, David J Taylor wrote: > Whilst it does involve a little soldering, the Garmin GPS 18 LVC is well > worth a look. Here's my story: > > http://www.david-taylor.myby.co.uk/ntp/FreeBSD-GPS-PPS.htm > > and I'm seeing in the order of 10 microseconds jitter - see the top PC at: > > http://www.david-taylor.myby.co.uk/mrtg/daily_ntp.html > > Bare-wire GPS is the way to go.
David, Thanks for the quick reply. Your web page is very informative. If I understand correctly, you got the barewire version and made your own DB-9 connector for it. Do you suppose that the DB-9 version (which comes with a cigarette lighter adapter) is less precise/more jittery/etc.? Also, do you have the 1 Hz or 5 Hz version? I see that the 5-Hz versions are at least twice as expensive as 1 Hz. Web site of the device in question: http://www.garmin.com/products/gps18oem -- Philip
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