After a forced cold start in an unknown location, the TB will still be searching for satellites after five minutes.
If you move it and don't clear the incorrect location, I don't know how long it will take to realise it is wrong (if it ever does). Dave -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of jimlux Sent: 14 July 2010 14:43 To: Discussion of precise time and frequency measurement Subject: [time-nuts] rapid startup GPSDO Is there some (inexpensive) GPSDO that has a "time from power on in an unknown location to reasonably stable" in the <5 minute category? Frequency accuracy in the 1E-9 range would be fine. A regular old GPS has a Time to First Fix well under that, and it should be cranking out 1pps pulses with 1E-7 or 1E-8 precision pretty quickly.. Would it be fair to say that after 100 seconds, one could theoretically have driven that down another factor of 10? As I understand it, a thunderbolt needs some number of hours after turn on to stabilize, but just how bad is it after, say, 5 minutes. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
