[ntp:questions] Re: Good GPS for attic?

Terje Mathisen terje.mathisen at hda.hydro.com
Sat Feb 12 17:07:36 UTC 2005

Joe Stella wrote:
> On Fri, 11 Feb 2005 09:44:28 -0500, Jonathan Sturges wrote:
>>I'm looking to use a GPS receiver as an inexpensive reference clock for 
>>an xntpd time server.  I'd like to leave the GPS in my attic for 
>>convenience and asthetics.
> A few years ago I purchased a Motorola Oncore UT board from
> www.tapr.org for about $130 or so.  They also sold me an interface
> board for around $30.  The interface provided a power regulator
> and serial port logic for the Oncore.
> I did a little soldering, dropped it all into an inexpensive
> plastic case, and now I have a stratum-1 NTP server.

Mine is still in a clear plastic bag, taped to the side of a FreeBSD PC.

It worked best when still running on Pentium 133 MHz, the current PIII 
has a less stable system board. :-(

> It still works today (he says while knocking on wood...)   :-)
> Tapr no longer sells the UT but it seems that they still have
> some old GT boards.  Another alternative is the Garmin GPS-25,
> it looks like tapr still sells the interface board for that.
> I almost got that one but I decided on the UT instead.

I'll look closely at Synergy Systems.


- <Terje.Mathisen at hda.hydro.com>
"almost all programming can be viewed as an exercise in caching"

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