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You are setting up your GPS unit to be compatible with your topographic map. You must:

You are planning a canoeing trip and are pleased to note that the UTM coordinates of major obstacles like rapids and falls are indicated on your trip guide. What is “UTM”?

When setting up your GPS unit, you must go to the setup menu and:

The elevation reading on your GPS device is 1,633 feet. But contour lines on your topo map read 1,550 feet. Which is more accurate?

Your GPS unit can determine your position even though there are heavy clouds overhead. But the position doesn’t match up with where you know you’re located. What could be wrong?

One of your Scouts is injured while hiking. You call 911 on your satellite phone and request a medical evacuation. You should give the operator:

You change the batteries in your GPS navigator and observe that its electronic compass is no longer accurate. What’s wrong?

You must arrange a medical evacuation, but your camp cannot be seen from the air. You have a GPS device and satellite phone. To make your coordinates as accurate as possible, you should:

You want to email the UTM coordinates of a waypoint to a friend. Which one of these should you send?

The batteries in your GPS unit are low. What can you do to conserve power?

Your topographic map was last updated in 1963. Which of these would make a poor GPS waypoint?

You want to program in the location of a portage in the Boundary Waters. The base map in your GPS shows little detail; your paper map is detailed but it doesn’t have coordinates (UTM or latitude/longitude) printed on its face. How can you accurately plot the location of the portage?

Programming GPS waypoints can be tricky. One wrong digit and you could be thousands of meters off! How can you check the accuracy of your plotted coordinates?

When reading map coordinates, you should always read:

Accuracy of the typical civilian GPS is about:

Some GPS receivers are equipped with WAAS (Wide Area Augmentation System). Which of these are true?

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