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HOW TO USE GPS
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The Global Positioning System (GPS) is a worldwide navigation system of about 24 satellites and their ground stations, originally developed for military use. GPS units use these satellites as reference points to calculate positions on the ground accurately within a matter of yards. GPS tools are now used in cars, boats, planes, construction equipment, movie making gear, farm machinery, and laptop computers. Our interest in them lies mostly with use in hiking and backpacking experiences, but we have great units for auto travel as well. And, we have devices that combine use of GPS satellites with communication satellites that allow backcountry travelers to stay in touch with home, and for those at home to know where the user is located. See information on renting the SPOT Messenger and renting the DeLorme InReach.
There are many different styles, types and sizes of GPS units available, and all will, and won't, do certain things of importance to hikers. Watch our video on our GPS units. For example, here are a few practical things you can do with a good GPS unit while exploring the woods:
But here are a few other 'real-trail' things that GPS ads won't always tell you:
If you get a GPS unit - and I admit they are easy to get hooked on, so they are definitely recommended - the best way to figure the thing out is to play with it. At home, where you're not likely to get lost depending on it. Like a new tent, don't take it out for the first time without learning something about it at home first.
The first thing a GPS unit does when you turn it on is to start looking for satellite signals, trying to nail down its position. You may get a signal meter like on a cell phone, or it will tell you how many satellites it is communicating with - most need at least 3 or 4 to be accurate. With the very first use you may need to give it an initial "calibration", the steps to which will be in the unit's manual or "Quick Start" guide. This short, simple process is something you may need to repeat from time to time if you use it in widely varied geographic areas.
The basic GPS skills I suggest you first learn are:
1) how to set a waypoint of your current location;
2) how to enter the coordinates of a different location from a map or other reference source;
3) how to determine directions from your current location to another waypoint;
4) how to use the built in compass and altimeter;
5) how to replace the batteries.
Each is easy to learn in a few minutes of experimenting or reading the instructions. If you can do these, you're ready to make GPS useful on the trail, where you can fine-tune your understanding of how all the features function together. We also have a nice library of how-to articles on this site. If you rent a GPS, we will include a print or online user guide with full details on how to use it. We are available to assist you over the phone as needed. Links to these informational articles:
How to Mark a Waypoint with a GPS
Our Garmin eTrex unit offers basic navigation at a great rental value. For a lot more bells and whistles, including altimeter and compass, try one of our Garmin 60cx units. Watch our video on our GPS units. We also have a dedicated page where you can rent a wide variety of auto navigation units for driving in all corners of the world.
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