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Basic GPS Operation

Basic GPS Operation

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Basic GPS Operation

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    1. Basic GPS Operation The concepts are similar The buttons and menus are all a bit different.

    3. Basic GPS Operation – Acquiring satellite signals To accurately determine your position, your GPS must be able to receive a strong signal from at least 4 satellites. Typically the unit will display a “map” of visible satellites, indicating which are currently being received and their signal strength.

    5. Basic GPS Operation – Current position display Once your GPS has acquired enough satellites to calculate your position, it will switch to a position display screen.

    6. Proper GPS receiver setup is essential Coordinate display format UTM/UPS or MGRS Datum must match the map NAD27 or NAD27 CONUS for most topos WGS84 for newer maps Headings set to match your compass Magnetic or True (Magnetic is “Auto” on some Garmins)

    8. Basic GPS Operation – Checking EPE Your GPS will calculate an Estimated Position Error (EPE). You should get in the habit of checking to see that it is reasonable.

    9. Basic GPS Operation – Reporting your position

    12. Basic GPS Operation – Saving your position Most GPS units have a button or menu for saving your current position. (Often labeled Mark) Garmin calls these saved positions “waypoints”, Magellan calls them “landmarks”. Usually the GPS will assign the next number in a sequence as the default name.

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