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What is GPS?
The Global Positioning System (GPS) uses satellites to transmit signals to a GPS unit on earth to accurately identify a person’s direction, speed location and time. It was developed twenty years ago by the US military because of the security needs of the time. Today, it can be used by anyone provided they posses a GPS enabled device or unit.
GPS devices can be practically used in almost any situation that you can think of, whether it is commercial, military or recreational. In the scientific arena, it has been widely used for global navigations, scientific and aeronautical researches, and even for handling the probabilities of catastrophes like earthquakes and tornadoes. For the everyday lay person, probably the best know use of GPS is as an in car navigational device.
Why Use an In-Car GPS Unit?
A GPS car unit is a device that you use to navigate while you are in your car. They can be fixed to the car or portable. With a GPS unit in your car easily tracked by the satellites, the device will safely and accurately direct you to all the places you want to go to and tell you what is the best route to get there.
You may be surprised to discover how easy they are to use. The gadget will always provide the user with user friendly options, right through to the successful completion of your journey. For travelers navigating across the globe, one could follow their journey right from the dashboard of the car. The weather and climatic conditions are closely monitored from your driver’s seat, and you get the updates on events around you.
Brands of In-Car GPS Units
These devices come in different varieties and at different costs. Spending on an in-car GPS unit is proportional to the devices features and quality.
The Garmin Nuvi 660 comes with a wide and clear screen along with hands free communications from your phone for your convenience. The HP iPaq rx5900 Travel Companion is relatively affordable. It is smaller but has all that you need. Listen to music and indulge in games to break the boredom.
Then there is the Magellan Maestro 4250, one of the most popular GPS devices. With this GPS, you receive real and updated traffic as you cruise along the highway. Enjoy the Bluetooth feature and sit back as you safely navigate home. The Pioneer AVIC-Z2 is a sizable unit with wider memory capacity, thus it can refine the details of the maps even better.
When buying a GPS unit, you should choose one that is at the upper end of your budget so that you can get the best of what GPS devices offer. There are several other competitors which are just as good as those units outlined above, with marvelous performance. Some of them will be a little cheaper with comparable features and GPS units in general are coming down in price everyday. Make sure you test drive any GPS unit before you buy.
Today, most new cars already have the GPS unit installed when you buy them. This makes it more convenient and you have the warranty advantage for any breakages or fault. However, you don’t get to choose what unit comes with the car which can be a disadvantage when the unit isn’t that user friendly.
While GPS car units offer many advantages, some caution is necessary when you are looking to purchase a GPS unit for your car. You want something that is very user friendly and is of high quality. The lesson is: try before you buy.

While talking about GPS Reviews we must first specify the requirements of the GPS. Perfect GPS Reviews will present in details the pros and cons of various GPS devices. Appropriate reviewing proves the presence of two most essential qualities in GPS for navigation.

There are a lot of websites all over the internet that purport to rate GPS devices. The problem with this is 1) did the reviewer actually use the device, and 2) does the reviewer actually care about what you do?You can find latest GPS reviews on alatest.com site (which you can access from the link at the bottom), they gather the customer reviews from cnet, amazon, and other sites & put together a list of what people were saying about each item.It’s fairly meaningless when you compare GPS systems by checking off which ones have turn-by-turn voice prompts, for instance. Nearly all of them do. What’s helpful is when a reviewer talks about using a Garmin Nuvi in heavy traffic with a lot of ambient noise and being able to still hear the device loud and clear.So, You can find narrative reviews by customers a lot more useful than GPS rating systems or GPS comparisons. Ratings and comparisons can be useful, but they are more of a starting point rather than something you need to make your final decision with.

Don’t Just Look to the Experts I know this is going to seem like a strange recommendation, but when you’re looking for a great navigation device, don’t just stick to the GPS reviews you read online and in magazines. You have your own keen instinct that you can you what is good and what isn’t. Even more, you have the ability to determine what features and functions you need. Those two aspects can help you to narrow down the list just as easily as reading what the experts have to say. So after you check out the commentary by everyone else giving their GPS reviews, take the initiative to go to a retailer in your area to learn about their specific features. Actually hold them in your hand to see how easy it is to control the menu with your fingers. This way you can learn invaluable information that far surpasses anything the GPS reviews can offer. Because, it is you, not the reviewers who have to use the navigation system, right?

Simplicity always stays in complexity. Some manage to find it and some manage to forget it. GPS stands for global positioning system and is a very good communication medium. This system consists of a constellation of medium orbit satellites which revolve around the earth. The total number of these satellites is some number between 24 to 32. GPS receivers locate the precise microwave signals given out by these satellites and determine their location. Receivers all around the world determine navigation guidance with the help of three mediums which are time transfer, relative movement and absolute location.A GPS works by calculating its position from the satellites which is sent out signals to the receiver. The receiver calculates the transmitting time of the signal from the receiving time and determines its position in the form of coordinates. These coordinates are then converted into latitude and longitude and hence the user of this GPS receiver can thus figure out his position on the map with these two figures.The world has many GPS systems that get produced by leading companies involved in this field. There are many GPS Navigation Systems which are quite capable in doing their primary task. However, the major ones are the Garmin Nuvi 880, the Magellan Maestro 4250 and the TomTom Go 930 GPS. These are the best in the business when it comes to these types of navigation systems.Bluetooth GPS Receiver is also a very good mechanism. This is a sleek machine which can be kept in a pocket and also can be mounted on a car. It is a small but a powerful instrument that can be used even with PDA’s as well as Smartphones. This receiver uses the Bluetooth as the receiving technology and is a very useful device. This is a very reliable mechanism and with the help of additional technologies effectively calculates the position and it is thus a wonderful device to have. Given the fact that this receiver is extremely portable and compact and easy to use. Hence this receiver is a must have medium for things such as long journeys and travelling to unknown locations.

Pros: Sporty yet classy styling that will age gracefully, minimal overhang in front and back, impressive stance (especially with headlights on), 17 inch alloy wheels on GT models.
Cons: Stock antenna is huge, 17 inch wheel styling is mediocre.
When ordering our long term 2008.5 Mazda 3 s GT model we were sure to spec it out with almost every option available with the sole exception being factory navigation (We went with a Garmin Nuvi 760 instead).
On top end 2008.5 Mazda 3 s GT models the car is outfitted with more aggressive styling cues like a body colored split grille, sportier bumper design, clear LED taillights and all-season tires wrapped around 17-inch alloy wheels. With a combination of sharp edges and flowing body lines typically found on entry level luxury cars, the Mazda3 is a real head turner and is often mistaken as a car that cost $30,000 or more.
On the topic of appearance, the design of the 17-inch alloy wheels left us a little confused. Mazda freshened the wheels with a new design but the newer, snowflake style of the 17-inch wheels looks out of place on a car with such clear sporting intentions. In spite of the snowflakes, the 2008.5 Mazda 3 has a very dominant stance and shows very strongly in photos.
Something that has plagued the Mazda 3’s design since 2004 is Mazda’s choice to use a long antenna at the rear center of the car to give it a more European look. While we agree that the antenna’s placement does look sporty and very Euro, it’s also way too big. In fact, the stock antenna measures more than a few inches tall and sticks out of the Mazda 3 like Elroy Jetson’s hat.
Our first mod for our Mazda 3 was to swap out the antenna with a shark fin.
Other notable exterior features include turn in (folding) power mirrors, auto on/off headlights that come on automatically at dusk, fog lights, rain sensing wipers and adjustable HID headlights that can be adjusted to one of four levels (Level zero is when the lights are pointed at their highest and level three aims the lights lower towards the ground which is ideal for fog).
Overall the 2008.5 Mazda 3 is very well built with striking exterior design features and significant luxury oriented options that not only make driving safer but vastly more convenient. Whether lighting your path amidst thick fog or automatically sensing and keeping rain off the windshield at varying speeds, the Mazda 3 makes driving more user friendly and fun.