The Chinese GPS is not bad and the price is only about $35
But for not much more money you can get a nearly state of the art unit
that is made and supported by a US company.
Synergy will selll you an M12M Timing GPS Receiver for about $60.
Look at the specs on the PDF sheet. This is gross overkill for NTP
but some people use GPS for other purposes
http://www.synergy-gps.com/index.php?option=com_content&task=blogcategory&id=32&Itemid=116
You can get older M12+T units from eBay for about $30 but the much
better performance, US based tech suport, warenty and better
documentation is maybe worth the price.
Chris Albertson
Redondo Beach, California
Chris,
Thanks for that information. The $35 Chinese kit includes the antenna and
USB cable, and no extra power supply is required (get power over USB), but
you do need to solder two wires.
The $60 unit (I could find no prices on the site you gave) appears to be
made by a Singapore company, according to the e-mail address on the
specification:
http://www.synergy-gps.com/images/stories/pdf/m12mt_brochure.pdf
The M12M Timing GPS Receiver on its own may require a TTL to RS-232
converter, serial connectors, and 3V power source, and the M12M Timing
Starter Kit uses an extra power supply (wall wart?), but requires no
soldering.
Great that folks can choose which suits them best. Either would be fine
for using with NTP.
Cheers,
David
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