Achim Gratz via devel <firstname.lastname@example.org>: > Eric S. Raymond via devel writes: > > The OnCore already is mostly supported. What's missing is that GPSD > > can't do site-survey mode for the M12 timing variant. These are long > > since EOL but still available on e-Bay for cheap, as boards with > > TTL-level outputs; you have to do systems integration yourself, > > including level shifters and 1PPS-to-DCD and a powered antenna. This > > page > > > > https://www.dellanave.com/projects/carpc/oncore_gps.php > > > > tells you what's required. > > Again, drop-in replacements for the M12 as well as receivers in > different form-factor with M12 compatible protocol are widely available, > both new and used, and are probably the most cost-effective timing-grade > modules you can get. One of those, the Furuno GT8536, was the king of > the hill when it comes to PPS timing precision (both without and with > sawtooth correction) until very recently.
I read the Furuno specsheet and that indeed looks like a nice piece of equipment. But Furuno lists it as discontinued, though. Can't find it for sale on eBay or elsewhere on the web; there are hints it might have EOLed in 2014. Hardware that is EOLed and no longer available for purchase anywhere we can see it is is not something that I think we can or should try to factor into our planning. On the other hand -- incoming -- I just had a long chat with the guy behind the CNS clock. That's looking like a reason to keep the OnCore driver. -- <a href="http://www.catb.org/~esr/">Eric S. Raymond</a> _______________________________________________ devel mailing list email@example.com http://lists.ntpsec.org/mailman/listinfo/devel