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From: | Terje Mathisen |
Subject: | Re: [gpsd-dev] PPS over USB |
Date: | Mon, 07 May 2012 15:35:46 +0200 |
User-agent: | Mozilla/5.0 (Windows NT 6.1; WOW64; rv:12.0) Gecko/20120429 Firefox/12.0 SeaMonkey/2.9.1 |
Ed W wrote:
On 06/05/2012 22:56, Terje Mathisen wrote:BTW, I just picked up a NetGear 3800 for the BufferBloat firmware, I intend to point that router at the local S1, which should result in better timing than a PPS over USB solution.Big problem... If you look on the chrony mailing list you can find a post plotting the divergence of worldwide stratum 1 clocks. I'm afraid the answer is that stratum 1 is not a definition of accuracy, just an observation on the clock source. In particular many have fixed offsets, poor stability, synced to radio clocks rather than GPS, etc.
You misunderstood my post.:-( The S1 is my personal, at-home, FreeBSD+Garmin18 ntpd server.I also have backup Linux+SURE and FreeBSD+Oncore UT+ servers, as well as a bunch of PPS-capable bare GSP boards.
I.e. my local LAN has multiple ~us level reference servers.I have been part of the ntp-hackers mailing list for 10-15 years, I used to host the widows binaries of the ntpd reference code.
Terje -- - <address@hidden> "almost all programming can be viewed as an exercise in caching"
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