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.
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
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