I thought some members of the PSN community may be interested in this page :

    http://www.rt66.com/~shera/

It describes a unit which uses a phase locked loop locked to the GPS clock
to give accuracies measured in parts in 10^12.

My mind is unable to recall this being posted here before.

regards all

Mark

Mark G Robinson    |    ZL2TOD    |   other@...............
Box 8770,            Auckland 1035,             New Zealand
Phone +64-9-846-3296, +64-9-817-4577  Pager +64-26-351-2770
-----------------------------------------------------------
04 May 1863 Taranaki Maori retaliate against renewed european settlement and
            ambush a party of soldiers returning from Tataraimara
04 May 1891 Auther Conan-Doyle's character Sherlock Holmes died.
04 May 1953 Ernest Hemingway wins the Pulitzer Prize for "The Old Man and
the
            Sea", William Inge wins for his play "The Picnic".
04 May 1968 The Big Mac is invented by a McDonald's Manager in Philadelphia.
04 May 1969 Radio Bosom, The Auckland University Student's Association Radio
            Station officially starts broadcasting.
04 May 1970 Four student vietnam war protestors are shot and killed at Kent
            State University.
04 May 1991 President Bush is admitted to hospital with arrythmia.


__________________________________________________________

Public Seismic Network Mailing List (PSN-L)