Magnus Danielson wrote: > >>I looked in my data and their spec sheet shows +/- 1 microsecond. But, >>I beleive this was much better than that. I cannot find it, but I >>beleive I seen a report where somebody compared the Jupiter and it was >>in the 120 to 150 nanosecond class. > > > +/- 1 microsecond is the old worstcase garantee for the GPS system. It is was > you can expect from a GPS with lack of satellites, SA and old style satellites > going out of date in their predicted orbits data. > > These days we have better satellites, full system and no SA. Add to that much > improved receivers (no more 1 channel receivers as in the good old days). > Brian and Magnus,
thanks for your input. It looks like I can, after all, use that Rockwell board without resorting to huge integration times for the 1pps signal. Just curious on another topic : I have seen advertized GPS boards with 20-channel capability, Given that, at least based on my direct experience, even with a clear horizon you rarely have 12 satellites in view, what does buy you having that capability available? TNX. 73 Alberto I2PHD _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
