On 2012-02-19, TomK <[email protected]> wrote: > FYI: Garmin OEM version 18x LVC 5M is a fun toy, for about 65.00USD. > You have to solder a 9-pin D-sub RS232, but where I am the unit locks on > 6-9 satellites, indoors. I have nine such units, some of which have > lived outdoors and endured at least five years of -10 F winters and +100 > F summers, without flinching.
Two of my Garmin 18 (not x) seem to have bit the dust after about 3 years. That is in Vancouver, where the winters can be pretty rainy, and the units were unprotected. > > On 02/13/12 02:31, Paul J R wrote: >> Figure I might chime in with the gps unit I got and if your in Aust i >> think its probably about the best deals i've seen that has a pps line >> (theres also another one they have if you can do smd soldering thats >> cheaper again). >> >> http://www.twig.com.au/store/product_info.php?products_id=108&osCsid=148a3e8759d5ae6b8ab6f3f0489e0fd4 >> <http://www.twig.com.au/store/product_info.php?products_id=108&osCsid=148a3e8759d5ae6b8ab6f3f0489e0fd4> >> >> I was looking to put together the dirt-cheapest ntpd machine with pps i >> could, and that was the cheapest i could find (though i havent had the >> time to put mine together as yet because the pps line does need some >> soldering). I also happened to have a wyse terminal (x86 based) >> http://www.wyse.com/products/hardware/thinclients/S10/index.asp that i >> picked up for around 30$ (currently running ubuntu 10.10 server without >> too much drama). >> >> On 13/02/12 13:00, Dave Hart wrote: >>> On Sat, Feb 11, 2012 at 10:20, Terje Mathisen wrote: >>>> unruh wrote: >>>>> GEt the manual from Mediatex MTK NMEA Packet User Manual, which gives a >>>>> far far more extensive set of nmea programming instructions for the >>>>> chipset that Sure uses. >>>> Does that one have more info than my current program? >>>> >>>> C:\c2\nmea-mtk>Release\nmea-mtk.exe -? >>>> nmea-mtk (c) 2011 Terje Mathisen >>>> Syntax: nmea-mtk [options] >>> The SURE electronics unit people have been buying as an affordable >>> refclock for those with soldering skills and time is the reference >>> design for the SkyNet SKG16AH chip known as SKG16B [1]. Unruh and >>> Terje are talking about a MTK (I or II?) chipset. Does anyone know >>> the relationship between the two? I'm wondering if there's a way to >>> refer to both unambiguously, or if they're subtly different beasts. >>> >>> After a little more digging I came across a nice comparison table of >>> chipsets [2] which suggests to me the SKG16AH is derived from or >>> clones the interface of a MTk design. If you have additional insight >>> or can correct me, I'd appreciate it. >>> >>> [1] http://www.skylab.com.cn/datasheet/SkyNav_SKG16AH_DS.pdf >>> [2] http://wiki.openstreetmap.org/wiki/GPS_Chipset >>> >>> Cheers, >>> Dave Hart >>> _______________________________________________ >>> questions mailing list >>> [email protected] >>> http://lists.ntp.org/listinfo/questions >>> >> >> _______________________________________________ >> questions mailing list >> [email protected] >> http://lists.ntp.org/listinfo/questions _______________________________________________ questions mailing list [email protected] http://lists.ntp.org/listinfo/questions
