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One of the hardest decisions you will face when purchasing a GPS Receiver is finding the right GPS Unit for you. There are many different types, from Garmin to Magellan. Choosing the right one can seem like an enormous task. However, it does not have to be difficult if you know what you are looking for before you buy. You can ask both retailers and GPS experts what the best units are. However, when choosing a GPS Receiver, your needs may differ from the needs of another, so, you should determine which unit you want to use on your own, based on exactly what your GPS specs are.. For instance, depending on what suits you best, you may wish to use a handheld GPS Unit. If you want to take your GPS everywhere you go, then a handheld GPS Unit is a great option. There are various types of handheld GPS Units on the market, so once you determine what type of GPS receiver you want you may want to examine and compare the features of each unit. In order to understand what kind of GPS Unit you want a brief overview of how they work is necessary. A GPS receiver uses a triangular technique to pinpoint your exact location on a map. The triangular formation uses three or four satellites at one time to send a signal to and from the GPS receiver. It does not matter whether you are using a Portable GPS Unit or a Handheld GPS Unit, you will need to be able to make contact with the satellites in order for the GPS receiver to work. Once the satellites and the GPS receiver send signals, the distance from each of the three satellites to the receiver is computed and a location is determined. This happens quite fast, since these signals travel on radio waves. In fact, it must travel as fast as a nanosecond in order to work sufficiently and alert you as to your exact location. The receiver is able to save information and it offers the location in a convenient, easy to use way. Often, this may mean a map is displayed or directions are listed. Other GPS Units use palm pilots or PCs to display the location information. GPS Receivers are designed to look familiar. The maps are displayed exactly as the maps you use online to receive directions are displayed. GPS Units sometimes include speedometers, which resemble those in cars. Some look like mini computers with an operating system type of setup. This makes GPS Units both appealing and easy to use, since you can mimic these applications when using them on your GPS.
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