1652RE: [dxatlas] STRATUM-0 NTP / GPS Time Server
- Dec 24, 2009Great stuff. Thank you for sharing. I think it could make a world of
difference with Faros.
DM78qg // KA0SWT
From: email@example.com [mailto:firstname.lastname@example.org]
On Behalf Of guvgeek
Sent: Thursday, December 24, 2009 05:44
Subject: [dxatlas] STRATUM-0 NTP / GPS Time Server
Alex (VE3NEA) indicated that members of the group were interested in an
accurate NTP Time Server. Out of necessity, I built one for my FAROS 1.3
Beacon Monitoring Station in South Africa.
See http://kw1o.com/faros/ for information on how to put one together.
Select the (Review the Stratum-0 Project) link.
Worse case cost should be under $500. Gross accuracy over my home network
is +-20ms, but you can achieve better than +-10ms accuracy in Faros due to
the way it averages the time data. I never even approached this level of
accuracy from NTP Internet Time here in South Africa. Much of the time
+-100ms was the norm, and Internet downtime is high. If you build one, I
think you will be surprised at how poor Internet Time really is. In my
research for the project, I found that in general, Internet business
transactions only require +-200ms accuracy, thus there really is no need for
very accurate time on the Internet, at least from an Internet business
Yahoo! Groups Links
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