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I have bought 4 Garmin MapGPS 76S units over the last 4 years for our field crew. They are very durable. They even float. I had to replace one, but only because it dropped out of a pack in a wildfire. Having a compass that points north before you move is a nice feature, when you need to orient yourself. WASS also is handy, and has repeatedly placed me within 10' of a waypoint. We use Public software from Minnesota DNR to download and upload waypoints. Their software is available at this web site:
http://www.dnr.state.mn.us/mis/gis/tools/arcview/extensions/DNRGarmin/DNRGarmin.html I have noticed that between units there are slight variations in uploaded data placement, but not usually more that 20' if satellite coverage is good. Current tidal charts for anywhere in the world are satellite downloaded as you seek them in the menu. |
