Hi, I'm looking to contribute to OSM and looking for the cheapest, reliable unit that has a USB interface. I'm also wondering what the difference is b/w using a mobile phone GPS unit (can that be done while 'offline' - ie, in a country where i don't have cell service) and something like a Garmin handheld - accuracy? cost?
I work in transportation so ideally I'd also like a unit that's great for storing a fair bit of detailed tracklog data that could be used for reconstructing things like speeds, times spent moving/not moving, etc. thanks for any advice. Andrew
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