On 04/11/07 17:09, Tony Hoyle wrote: > Simon Arlott wrote: >> Mine sits next to a window, it doesn't have a full view either but for >> timing purposes the PPS signal is still good while it's only tracking 2 >> satellites... > > How did you do that? Mine won't lock onto less than 4 no matter what > options I set, and I have the problem that it can only see 2/3 most of > the day. >
It won't get a fix with less than 3 satellites, but once it has a fix and enables the PPS signal it stays good even when it loses it and can only see 2. Disable "PPS Auto Off", and make sure the fix type is "Automatic". You'd also need a refclock driver[1] that recognises the lack of a fix because the NMEA time output will be out of sync with the PPS signal. [1] http://svn.lp0.eu/simon/gps_nmea/ Includes IPv6 multicasting of NMEA data, which you might not want... -- Simon Arlott
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