GPS Reviews Comparison – How to Choose the Right Model

March 23rd, 2010 by admin No comments »



If you’re like me, choosing the right GPS receiver is a little daunting. What helps is a good GPS reviews comparison, where you can learn what various models do and how much they cost. In other words, you need a guide!

Choosing the right GPS device is critical. Prices have dropped over the past two years, and you can probably get a model with more bells and whistles than you think you can. To help you form your game plan, let’s first talk about who the main manufacturers are, then what various models do and how much they cost.

There are a number of companies that make GPS receivers, but the big three are Garmin, Tom Tom, and Magellan. Garmin is the industry leader with by far the most market share, and also a much broader range of products than anyone else.

Magellan actually was one of the first companies to make these nifty little devices. They were essentially the pioneer. And Tom Tom is the new arrival. Although new, Tom Tom has made great inroads on the market shares of the more established companies by offering great products at great prices.

Any good GPS reviews comparison should tell you what you can expect to buy. So, let’s run over the basic features that you’ll get with any GPS receiver.

All GPS receivers have a touch screen interface, maps of the lower 48 states, and a database of Points of Interest (POIs). All receivers also calculate the best route from where you are to where you want to go, and they give you directions via spoken voice prompts.

The base models of either Garmin, Tom Tom, or Magellan will do all of this and more.

For around $150 you can get the Garmin nuvi 200, the Tom Tom One, or the Magellan Maestro 3100. These three models all cover the basic features I mentioned.

What if you want more? How much is that going to cost?

Well, let’s run over what more you can get.

Upgrades are: more maps (Alaska, Hawaii, Canada, Europe, Mexico), bigger screen, Bluetooth, real-time traffic and weather, many more POIs (how about 6 million!), and multiple routing.

You can get most of this stuff for $350! For instance, the Garmin 660 can do all of the above except the multi-route calculations. It sells for slightly under $350.

Magellan’s Maestro 4250 is a direct competitor and can do essentially what the Garmin 660 can. The 4250 is currently selling for slightly more than $250.

Tom Tom’s comparable receiver would be the Tom Tom Go 720, which is currently selling for less than $350.

Of course, you might be willing to spend more!

As you go higher in price, each of these companies offers great proprietary features. Magellan has a deal with AAA, for instance, to include their Tour Book right in the device. (For AAA members only.)

A good GPS reviews comparison can only do so much, however.

Now you need to actually get on an informative website and start browsing.

By: Lee Cole

How GPS Receivers Work

March 21st, 2010 by admin No comments »



It seems that almost everyone has heard of GPS (Global Positioning System) in one form or another. The most well known GPS device is the car navigation system that shows and tells the driver through voice commands how to get to their desired pre-programmed destination. But if you’re wondering how these little technological wonders work then you’ve come to the right place.

A GPS receiver is an electronic device that uses the Global Positioning System to determine its exact location on earth with pin-point accuracy. This system is made up of the three parts; 27 satellites that send out continuous positioning signals, ground stations around the world that help synchronize the satellites, and various types of GPS receivers.

In this article we’re going to concentrate on how a GPS receiver works within this system since it’s the piece of the GPS puzzle that keeps you from getting lost. Its main function is to calculate its position on the earth using the signals that it receives from the satellite system.

To do this the receiver needs to lock onto the signals of at least 3 satellites. Once 3 or more satellites have been detected it then needs to determine the distance between the satellites and the distance between itself and each satellite. It then uses the basic math principles of triangulation or trilateration to compute its location on the earth’s surface.

The signals a GPS receiver uses to figure its location are radio signals transmitted by the satellites. These radio signals have three bits of information embedded in them; ephemeris data, almanac data, and a pseudorandom code. Using this information the GPS unit is able to triangulate its position and report that back to its user.

Accuracy is another question many first time users wonder about. The good news is GPS receivers are very accurate with the ability to pin-point your location to within a radius of 20 meters. There are ways to increase accuracy through the use of DGPS (Differential GPS) and WAAS (Wide Are Augmentation System) which can get within 3 meters of accuracy. Units with these two features normally cost more but the increase in accuracy can be well worth the cost.

There are many factors that can and do affect how accurately a GPS unit reports its position. These include:

1. The number of visible satellites
2. Signal delays caused as they pass through the earths atmosphere
3. Signals bouncing off of objects
4. Inaccurate clock in the GPS unit
5. Ephemeris errors
6. Satellites in poor positions
7. Satellite signals that are blocked because of terrain or manmade features

GPS is a great technology that has found its way into many everyday applications. Depending on your needs for keeping track of where you are there is sure to be a GPS receiver that fits the bill.

By: Andrew Bicknell

Garmin Rino 520 Handheld GPS – Review

March 20th, 2010 by admin No comments »



Have any of these things every happened to you?

* You are on a hike trip and you have lost a friend. Storm clouds are looming and they are nowhere to be found.

* You have taken your family on an outing at an amusement park. It is closing time but you can’t find one person.

* You are on the boat and you want to make sure you are going in the right direction, whether its north, south, east or west.

Garmin’s RINO 520 portable GPS navigator can solve all of those problems. These two-way radio systems are equipped with a GPS navigator that can help you find your way and lead your group as well. The patented GPS receiver allows other members of your party to tell you where they are as well as showing them your location.

One of the best features on the RINO 520 is its display. With bold colors, it is easy to see and interpret. You will never need to look at a large map from an atlas again after using the RINO 520. Garmin’s Rino 520 handheld GPS units not only have built-in base maps of North and South America, but you can choose optional City Select software. These can be adapted to almost any trip, hike or boating excursion you plan to take. This GPS navigator unit allows you to customize your route, complete with turn-by-turn directions and alert tones. No more getting lost on the trails or at sea. If you are just on a sight-seeing trip, the RINO 520 makes finding a hotel or restaurant that his nearby easy. This GPS navigator unit can map points of interest along your route

If the sea is your passion, this portable GPS unit can be customized with Garmin’s exclusive optional cartography that includes the fishing hot spots on recreational lakes in the United States. The built-in calendar can show you the best fishing times. If you like to hunt, this portable GPS unit can also tell you the best hunting times for snaring your prey.

What are some of the other outstanding features of the RINO 520? The RINO 520 unit has 56 megabytes of internal memory so that you can quickly download personalized maps for your use onto your portable GPS. The two-way radio has five watts of power, allowing you to contact help from as far away as 14 miles. The portable GPS unit has a WAAS enabled, 12 parallel GPS receiver. It has a bright color display and a rechargeable battery that can last up to 16 hours. Priced at about $482, Garmin’s RINO 520 is one of the best buys of portable GPS systems on the market.

By: Catherine Tower