[hpsdr] GPS Receiver

[Greg - ZL3IX]

Phil, at the saltmine we use a cheap Trimble Lassen SQ GPS module with 
no problems.  Even with no filtering, the 1pps edge looks pretty stable 
on a scope.  The 1pps is used to condition an ovened VXO using a very 
slow time constant loop.  The VXO is fed from a 16-bit DAC, and the 
whole arrangement achieves a 1 ppb accuracy after settling.

73, Greg

Phil Harman wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
>
> I'm looking for a GPS receiver with a 1pps output suitable as a source 
> for my 10MHz GPS locked reference. I came across this new Garmin 
> receiver - looks very nice physically but not sure if the 1pps spec at 
> ~1uS is satisfactory.
>
> The device is a GPS 18 and the spec is here
>
> <http://www8.garmin.com/manuals/425_TechnicalSpecification.pdf>
>
> Anyone have any experience or comments on its suitability please.
>
> 73's Phil...VK6APH
>
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