[ntp:questions] Using Garmin GPS-III+ as Time source

Richard B. Gilbert rgilbert88 at comcast.net
Sat Nov 22 14:18:48 UTC 2008

George R. Kasica wrote:
> Hello:
> Just curious if this is usable as an NTP time source.
> I have an old Garmin GPS-III+ lying around here (its a small handheld
> GPS unit) that I can power from an AC Adapter and get a solid GPS
> signal out of indoors actually that will provide NEMA 0183 version 2.0
> output from RS232 that I have already got a cable for.
> How/can I configure ntpd to utilize this setup in linux?? Or am I
> after something that I can't do with this unit? Does someone have an
> alternative recommendation??
> Thanks,

Your Garmin GPS-III+ would seem to be designed  for navigation rather 
than timing.

You can probably use it but it is far from being the best tool for the 
job.  Garmin offers the GPS18-LVC which IS designed for timing.  I 
believe that it sells for less than $100 US.

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