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From: Mills@udel.edu
Newsgroups: comp.protocols.time.ntp
Subject: Re:  General help-info
Message-ID: <9106021648.aa11234@huey.udel.edu>
Date: 2 Jun 91 20:48:13 GMT
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Edward,

You really do need to peer with several (like three) radio clocks,
because they sometimes lose their chime due to various ionspheric
phenomena and carbon-based unit failures. Also, the radio transmissions
used by various clocks are not available everywhere in the world and,
in fact for some services, not outside continental US and continental
Europe. In principle, GPS is available everywhere, but at $10K a pop,
not affordable by most.

At the moment there are stratum-1 servers in US, Canada, Switzerland,
Germany and Norway. Even Norway is a special case, since only its
timebase oscillator is synchronized to national standards and the
seconds are numbered using NTP and other stratum-1 servers. It would of
course be wonderful if heavy hitters with lots of hosts and bucks
could buy GPS receivers for timecode-deprived parts of the world and
make their ticks accessable via NTP.

Dave