On Mon, Aug 20, 2012 at 3:10 PM, Sarah White <kuze...@gmail.com> wrote:
> > I really like that the thunderbolt can (assuming the initial location > has been uploaded, or the default "site survey" has been completed) > still keep accurate time / discipline based on a single satellite lock > (before falling back on the ovenized crystal in pure "holdover" mode) > > All timing mode GPSes can keep time with one GPS sat in view. It works becaus ethe GPS "knows" it is not moving. and it has the exact location f the one satellite. Holding over when there are zero satellites is not standard and required a good local oscillator. You can built one froma cheap $20 timing GPS and a OCXO and some logic chips. The t-bolt is a GPS with a built-in GPSDO. Chris Albertson Redondo Beach, California _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
