atomic clocks

From: Tony Beresford (starman@camtech.net.au)
Date: Wed Jan 17 2001 - 23:14:18 PST

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    Tom,
    The watches and clocks you mention are sold in the US.
    the website is www.atomictime.com . They have been advertising
    in Sky & Telescope for at least 3 years.
    They have no external output.
    There is a heathkit radio which has a serial output
    + software which synchronizes computer to WWV
    There are quite a few NTP clents that do it 
    for desktop computers. I currently use one called
    about time. Other people have mentioned others.
    
    A sub-group of radio amatuers the TUCSON Amatuer
    packet radio group( TAPR) has a kit to build the interface
    between some GPS receivers and the computer. This is
    a design by Dr Tom Clark of NASA GOddard, and keeps
    time to better than a microsecond. Comes with
    software to synch the computer. It utilizes
    a narrow 1 second pulse out of better GPS receivers ( named on site)
    Costs couple hundred dollars. There was a link on this site to a
    commercial version of same for about $600.
    Tony Beresford
    
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