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 ----------------------------------------------------------------- Unsubscribe from SeeSat-L by sending a message with 'unsubscribe' in the SUBJECT to SeeSat-L-request@lists.satellite.eu.org http://www2.satellite.eu.org/seesat/seesatindex.html
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