Hi Folks, in the past I have used a Garmin eTrex connected to a laptop (via a serial cable and a serial to USB adaptor). Thought life would be easier with a USB Mouse and purchased a BU-353, however, am a little surprised to see what seems a noisier signal. For example, I drove down a dirt road with some overhanging trees and the resulting track was noticably more jaggy that when I first recorded that same road using the Garmin. Larger (and more open roads) don't seem to be an issue. Has anyone any experance with the sensitivity of these (BU-353) devices ? Should I expect better or worse than my several years old Garmin ? David
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