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Date: Mon, 10 Feb 2014 23:31:01 +0100
From: Tobias DG3LV <DG3LV@gmx.net>
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To: rsgb_lf_group@blacksheep.org
Subject: LF: NTP-substitutes
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Hi Joe, LF !

Some links to time-related websites for reference.

See knowledgebase of windows :
http://technet.microsoft.com/en-us/library/cc758905%28v=ws.10%29

Read what is written at :
http://technet.microsoft.com/en-us/library/b43a025f-cce2-4c82-b3ea-3b95d482db3a

"Important !
The W32Time service is not a full-featured NTP solution that meets 
time-sensitive application needs and is not supported by Microsoft as 
such. For more information, see Microsoft Knowledge Base article 939322, 
Support boundary to configure the Windows Time service for high-accuracy 
environments (http://go.microsoft.com/fwlink/?LinkID=179459)."

this link leads to :
http://support.microsoft.com/kb/939322/en-us
"The W32Time service cannot reliably maintain sync time to the range of 
one to two seconds. Such tolerances are outside the design specification 
of the W32Time service."

Have a look at the
"List of time and frequency software by the National Institute of 
Standards and Technology (NIST)" :
http://www.nist.gov/physlab/div847/grp40/softwarelist.cfm

My view :
"Meinberg NTP" is available for a lot of Operating Systems, it works 
easily and very well at my Win7/64 PC.

73 de dg3lv Tobias