KE5NGX writes: > I am designing a system with a GPS module, and started looking at all of > the things it could do, including time.
> Since you folks are all interested in time, I was wondering which of two > products would be of interest to you. > 1. A GPS module with the ability to expand the serial port to more than > 10 to allow you to use the NTP NEMA driver. The time pulse would be > accurate to about 30 nS RMS. Retail cost about $100. > 2. A time server with 2 Ethernet ports, with GPS time reference, to > directly support between 50 and 100 users using GPS. Retail Cost about > $200 > Both would be Stratum 1 by using the GPS (and later Galileo also) > Satellites. I personally feel that the Stratum 1's way way way over-rely on GPS and do not have enough diversity in terms of other traceable time sources. CDMA is, IMHO, too closely tied to GPS. Getting Galileo too would be a good step. Are Galileo receivers available off-the-shelf already in preparation for deployment? But an even better step would be to diversify the very much inbred Stratum 1 population and have a deeper and wider variety of Shortwave, Longwave, Atomic, etc. clocks represented. Tim. _______________________________________________ timekeepers mailing list [email protected] https://fortytwo.ch/mailman/cgi-bin/listinfo/timekeepers
