At 10:42 AM 6/4/99 -0700, J. Lee Blanton wrote: >Hello fellow satellite fans: > >The question of "What time is it?" is very important for making accurate >satellite observations but isn't very easy to answer. I've seen ads for >so-called "atomic clocks" that are available from Radio Shack and elsewhere >which are synchronized with low frequency time signals. Many of these >don't even have a 'seconds' display or can't be set to UTC. Does anyone >know of a really good one suitable for satellite observations? An accuracy >of 0.1 second or better would be nice. I'd appreciate any advice. Thanks. Well -- a GPS works pretty well, if within one second will work. That's about the delay you can expect when reading the NMEA sentences from the data port. Earl Earl Needham, KD5XB mailto:KD5XB@AMSAT.ORG Clovis, New Mexico DM84jk N34d 25.446 W103d 12.700 (or so)