gps GPS models give the electronic routes and voice guided turn by turn directions to your destination. As technology has progressed in this field, you are able to get plenty of models within the market with various accessories and add on features, some extremely useful. The basic features you need to appear out for before you buy one are explained in the following sections.
Map Capabilities
Most GPS versions come with internal map capabilities. Manufacturer provides maps with details up to street level within the hard drive. The menu choice enables you to access the desired data. Comprehensive street level maps can help you identify the coordinates with the destination on the map by utilizing just the name, or locate the destination on map by giving the coordinates. For some models you’ll need to subscribe to a plan to update the maps on an annual basis.
Some models provide map info in memory cards having detailed information of a specific region. Thus you will require extra cards if you have to store information for more coverage. Map cartridges are more flexible but can prove to be costly.
Some manufacturers provide map info in CD-ROM, DVD-ROM discs.
Receiver type
There are 24 GPS satellites in six orbits around the earth. GPS receivers track these satellites to compute the info of your location, the bearing, distance and time left to reach destination and other route options. Since there are 12 satellites at a time in view, each of them is tracked continuously to generate the information. Most recent GPS receivers marketed these days are commonly 12 parallel channel receivers.
The associated advantages of tracking more satellites are:
faster cold begin
regular initialization
better reception
don’t require an exterior antenna if you are in an open automobile
Other receiver kinds are:
20 parallel channel receivers
16 parallel channel receivers
14 parallel channel receivers
Display size
Big displays are a visual treat when you consider purchasing TVs but not the same when it comes to buying a GPS. The map on the display provides you info regarding:
current location
exactly where next turn is
name of street you’re turning onto
estimated time of arrival
While driving, casting your glance away a second longer can prove to be risky, hence a device with a smaller screen will be advantageous. The display ought to be simple to read irrespective of surroundings. The navigation aids arrive in numerous sizes. Some units with display size as big as 7in. enable you to get connected to exterior video devices. Some hand held ones are as small as 1.5in.X 0.9in.) Some with the convenient, easy to read GPS are:
3.5 in.
2.in. x 2.1 in.
Resolution
Display resolution decides how clearly you can see and read in broad daylight. Color, glare free LCDs are soothing to the eyes. High end versions have color screens which gives info about weather and terrain. Some GPS units with various resolutions are:
320×240
480×272
PC Interface
The portable models have a USB or serial ports which gets you connected to some PC. It enables you to download latest maps and system software. GPS units with USB and serial ports can be found at:
USB:
Serial port:
Bluetooth GPS that communicates with mobile device wirelessly are also available.
Built-in memory
With larger memory room one can shop much more route information and waypoints. Units with software that can transfer data from the unit to a PC could be used to gather more information than it can hold. So depending on how much map data and info you wish to store, you are able to select the models with the required memory room. You get various models with wide range of built-in memory room.
1 to 30MB
30 to 512MB
512 to 2500MB
2500 to 40000MB
Antennas
External antennas are used when stronger signals are needed. If in a vehicle the program cannot be placed near the window, exterior Antenna hookups can prove to be ideal solution. Choice of exterior hookups is most practical for hiking under heavy tree cover, under tall buildings or in any place which doesn’t have a good view of sky.
Built-in antennas are less prone to breakage and can communicate with much more satellites.
Quadrifilar Helix- This really is also an exterior antenna useful for situations exactly where open sky is limited.
Flip up antennas too give strong performance.
Price
This really is 1 factor not to be compromised on, should you don’t wish yourself or your loved ones to obtain lost in the maze of roads. The technology in this field has developed rapidly and the old versions which are cheaper might have crowded maps, or confusing menu choices. Most recent versions high on price have much more detailed maps. Of course, lesser the features lesser will be the cost. Should you don’t need functions like live traffic information or weather information, do not invest money in versions offering these functions. Functions like speech recognition for hands free of charge operation, 3D maps, and information on fuel prices all come for additional price.
Under $200- You get good light weight portable navigation models in this range. Maps appear excellent with reasonably timely route recalculations. Good value for money! Those of you looking for much more memory space may check out models at higher range.
Between $200 to $312- You get much better performance and features like anti glare, touch display with good resolution. You also get great in-built memory space and battery life.
Among $312 to $416- Great display settings, voice guided directions and overall good overall performance.
Between $416 to $1172- Accurate route guidance, simple to use and compatibility with Bluetooth cell phones are some attractive features of devices within the price variety.
Brands
You will find numerous manufacturers manufacturing GPS units with various functions to suit a wide variety of clients. The major manufacturers accessible these days are:
Garmin has many versions of handheld and mounted kinds.

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