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GPS updates only occur every 1 second, so speed of the interface would not be important, what is important is the GPS device itself, such as chip set, acquisition time, etc.
I have the BT-338 and prefer it over the CF units I've had before, more convenient as I don't need to swap out the CF storage card for the GPS, and don't need to carry extra equipment as I keep the unit in the car.
Gary
Last edited by Gdio53; 09-13-05 at 07:33 PM.
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