I'm looking at getting an improved GPS unit for my lap timer app.
Phones have a max GPS refresh rate and only use certain satellites.
The GPS units come with 10hz updates.
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Option 1
Make:
Dual
Model:
XGPS160
Link:
Dual SkyPro XGPS160
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Option 2
Make:
Q-Starz
Model:
BT-Q1000eX
Link:
qstarz.com
![](http://i.ebayimg.com/00/s/MTYwMFgxNjAw/z/Ba0AAOSwaNBUixD8/$_35.JPG)
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Any thoughts on this for lap timing?