This article is the first of series of three articles in which I’ll explain some basic principles and concepts of GPS. I in this article I’ll explain how exactly GPS works so it won’t be a mystery anymore. I’ll also mention some recent enhancements to the GPS system. In the second article I’ll explain about some of the GPS core technologies, so when you hear the magic words “Sirf III” you’ll know what people are talking about. And finally, in the third paragraph I’ll make a short review of the leading GPS manufacturers on the market today.

First of all GPS stands for Global Positioning System and usually refers to the GPS receiver. The receiver basically receives the signals incoming from constellation of 27 satellites which are orbiting the Earth (actually there are only 24 satellites that are operational and 3 additional for backup in case one of the 24 fails) and from those signals can calculate it’s absolute position on Earth. This satellite system was developed by the U.S. military and after a while U.S. government opened it up for public. Those satellites are circling the Earth making two complete rotations every day. Their orbits are planned the way that at any time and anywhere on Earth there are at least four satellites “visible” in the sky. A GPS receiver locates four or more satellites from the signals those satellites send constantly towards the Earth, calculates the distance to each of the satellites and from this information calculates its’ absolute location on Earth. This process of pinpointing the location of the GPS receiver is based on mathematical principle called trilateration.

Let me explain a little about this principle regarding the GPS. It is a little tricky so if you don’t want to bother yourself with details – just skip this chapter. Like I said, GPS receiver locates the satellites and calculates the distance to them. Lets say for example receiver knows that Satellite_1 is located 20 miles from it. In the whole space Satellite_1 can be anywhere on a huge Sphere with radius of 20 miles around the receiver. If receiver also knows that Satellite_2 is located 30 miles from it, it can overlap the sphere of satellite_1 with the sphere of satellite_2. The spheres intersect in a perfect circle (think in 3 dimensions). The distance to the third satellites gives us a third sphere which intersects with the circle in two points. One of those points is located in space and the other located on Earth. This second point is actually the location of the GPS receiver. Using the Earth as fourth sphere, receiver is able to choose that second point and this way it knows its’ exact location on earth.

Basically GPS receiver needs to locate only three satellites but it always tries to locate as many satellites as possible because it improves the accuracy of the result.

The signals that satellites are constantly transmitting are high-frequency, low power radio waves which contain information about the satellite and its’ location. GPS receiver can calculate the distance to the satellite by counting the time it takes to the signal to get from the satellite to the receiver.

The whole process described above works well but it has inaccuracies due to several reasons like signal interference,weather and more. Differential GPS (DGPS) helps correct those inaccuracies. This enhancement is base on stations located on Earth. The hardware at those stations knows exactly the location of the station and constantly sends information to GPS receivers (but only to those in which this technology is implemented) how to correct their results so the will be more accurate.

Once the GPS receiver made the calculation, it can tell the latitude, the longitude and the altitude of its’ current position. This doesn’t tell much to the average user. So in order to make the use of the GPS receiver more user-friendly many receivers send this data to a program which displays a map and can show the position on it.

Well that’s it for this article and check for updates, because like I said at the top of this article there are two more articles on the way!

About The Author

Zvi Braverman is a student of electronic Engineering at the Tel-Aviv university. He is co-founder of 4Winds company which imports GPS equipment and designs GPS and Hi-tech solutions for personal users and organizations. More information about GPS products can be found here: http://www.rikaline.co.il.

Ten years ago, cell phones were just beginning to appear. Today, it seems every person on the street has one. However, not all cell phones are equal. How do you find the best one?

Ask yourself what qualities are important to you. First, the physical aspects. Do you prefer flat cell phones or those with a flip? Are slim cell phones more attractive, or does size really matter?

Cell phones seem to come in all shapes and sizes, and color can also be a determining factor. Have you seen the changeable covers? Who knew cell phones would become such a fashion statement?

A critical factor to consider is ring tones. Some cell phones come with standard rings that could drive anyone crazy. Others have downloadable tones, letting you show off your taste and personality. If you’ve ever been on a crowded train where six cell phones started ringing at once, you know how important it is to have the pleasant ring tone. No one wants to draw negative attention.

Cell phones have all sorts of new features, and they keep improving. Some cell phones allow you to take pictures. Other cell phones give you internet access on the road. And like most technology, there are new improvements made on a weekly basis. Remember that you’ll be paying for these features; make sure you’ll use them before you spend the money.

Manufacturers of cell phones have done extensive research to find out what is important to you, the buyer. The carrier, though, is also important to consider. What good are cell phones, after all, if you can’t get service? Find out who in your area has the widest service and the best rate plan.

Most of us have become spoiled by our cell phones. It’s hard to remember the days when no one could reach you until you got home from class or from work. Cell phones have opened up our lines of communication considerably. (Sometimes it’s questionable whether that’s a good thing….) The fact is, it looks like cell phones are here to stay. Is it possible anymore to escape? Of course! The best thing about cell phones is that you can use them when you need them, but sometimes the best cell phones are the ones that are turned off.

About The Author

Jeff Lakie is the founder of http://www.cell-phone-companies.info and http://www.cell-phone-covers.info websites providing information on cell phones and cell phone deals

Are you looking for some GPS systems information? Then come to see us. We have been providing technical courses and advanced GPS training on GPS systems information since a long time ago. We offer more than 20 courses on professional GPS and all you want to know about GPS systems information.

But, first than anything, what is exactly a Global Positioning System (GPS)?

It is a satellite-based navigation system made up of a network of 24 satellites placed into orbit by the U.S. Department of Defense. At first, GPS was going to be used by military applications, but later in the 1980s, the government allowed it to be available for civilian use. It doesn’t matter the weather conditions, GPS keeps working anywhere in the world and the whole day. It is not necessary any subscription fees or setup charges to use GPS.

The second question would be: How it works?

GPS satellites circle the earth twice a day in a very precise orbit and transmit signal information to earth. GPS receivers can calculate exactly where the user is by taking this information and using triangulation. In other words, the GPS receiver compares the time a signal was transmitted by a satellite with the time it was received. The time difference tells the GPS receiver how far away the satellite is. And by repeating this procedure with a few more satellites, the receiver can determine the user’s position and show it on the unit’s electronic map.

A GPS receiver can calculate the latitude and longitude and track movement if it is locked on to the signal of at least three satellites. And it can determine the user’s latitude, longitude and altitude using four or more satellites. But it doesn’t end with this, because once we have the user’s position, the GPS unit can calculate other information, such as speed, bearing, track, trip distance, distance to destination, and much more. So not just you can know where exactly somebody is, but also you can know a lot of things about that person, and it doesn’t matter where in the world that person may be.

There is so much more GPS systems information and a lot of things you can learn to understand and use a GPS system correctly and you can find all of them just by looking for us.

Browse our list of course schedules, course descriptions, locations, and the incredible low prices and discounts we have for you. We also have an extensive selection of books, software, and equipment for GPS users of all types.

http://www.gps-system-vehicle-tracking.com/gpssystem/11/gps-vehicle-tracking-system.html

About The Author

J Herrera is a freelance writer for GPS topics.

http://www.gps-system-vehicle-tracking.com/gpssystem/11/gps-vehicle-tracking-system.html

http://www.rebelectronics.com/ is introducing a remarkable new product is the new incredible low-cost Eagle® CUDA® 128 fish finder outperforms its competition beyond belief. Its 128 vertical pixel LCD shows fish better, giving you the advantage! This fish finder has many features and is at an incredibly low price. The features of the 128 include a 4″ (10.2 cm) diagonal screen with a Film Super Twist LCD as well as a High-definition 128 vertical pixel resolution. These features along with a Backlit screen and 4-level of grayscale.

This fish finder is among the best around and can be mounted in your dash. It has a depth capability to 600 ft. and 800 watts of peak-to-peak power. With its high-performance, low-profile 200 kHz Skimmer® transducer with built-in temp delivers a wider, more effective fish detection area of up to 60° with high sensitivity settings – Operates at boat speeds up to 70 mph.

The sonar with this product is unsurpassed and includes, Advanced Signal Processing (ASP™) automatically adjusts your settings for the best sonar picture Patented GRAYLINE® separates fish from nearby structure and bottom Advanced Fish I.D.™ shows underwater targets in different sizes of fish symbols Fish Track™ displays target depth readings above fish symbols Surface water temperature readings come from a built-in temp sensor in the transducer Zoom with zoom bottom tracking and easy zoom-in/out control.

Fishing on-the-go is easy with the CUDA® 128 Portable. Features the handy Porta-Power Pack and a high-performance 200 kHz Skimmer® transducer with suction-cup mounting bracket.

Other performance features include an ultra compact case design with an adjustable tilt; quick-release mounting system makes it easy to connect/disconnect with uniplug cable connector. Their also is an internal back-up memory for key sonar settings. The unit is completely sealed and waterproof, even for use in harsh saltwater environments with a full one-year warranty.

This is an affordable fish finder with our low discounted pricing that you can find at www.rebelectronics.com For further information contact:

Bob Byrd
908 Prince St.
Pekin, IL 61554
email brsent@REBelectronics.com

Contact Information
Bob Byrd BRSENT
http://www.rebelectronics.com
Phone 309-346-5833

About The Author

Robert Byrd is owner of rebelectronics.com which has been online for almost a year now and is featuring marine electronics, CB radios, GPS units as well as gifts, figurines, knives and swords and adding more items daily.

Spy Matrix GPS is the ultimate in car tracking technology. It is easy to use, easy to hide, and easy to follow. It is the perfect way for you to know where your car is now, and where you car was. Plus, this is a portable device, allowing you to transfer it to different cars at need. You can have peace of mind knowing where your car is it all times. And when you have teenagers, you can know where they have your car, thanks to the Spy Matrix GPS.

The Spy Matrix GPS car tracking system makes use of the global positioning technology that the U.S. military has used since the 1980s. It is the same technology used by bounty hunters, private investigators, police, and government intelligence agencies. It has moved into the next generation, a small device that is portable and can even fit in a backpack or a purse.

When you use Spy Matrix GPS to keep track of roaming teenagers, you can know that the car is where it should be. If your teen gets in a wreck or runs out of gas, he or she can call you, and if they do not know where they are, you, at least, have good directions. This remarkable GPS device can even keep track of approximate speeds, so you can be alerted to unsafe driving practices.

In addition to the great features listed above, the Spy Matrix GPS also features real time tracking. You can sit down and watch the car as it is moving down the road. Plus, you can also access a history of where the car has been. Your teen may be at the study group now, but did she or he go there via a circuitous route that brought him or her there by way of a rave or a club?

Your teen does not even have to know that you have the Spy Matrix GPS in the car. It is so small that it is easy to conceal. It can even be slipped into a backpack or purse. You can have peace of mind and your teenager can have a social life when you make use of the Spy Matrix GPS.

(c) 2005 Copyright www.spyassociates.com. This article is about: Spy Matrix GPS.

About The Author

Kingston Amadan

To learn more about Spy and Surveillance Products visit http://www.spyassociates.com. Read other related articles at http://spyassociates.blogspot.com/.

Detectives are domestic spies mostly providing surveillance on a work for hire bases. To be a detective you must acquire a license legally. Like spies detectives are a popular choice for heroes in movies but like most of the stories to come out of Hollywood it is not as flashy as in the movies. The stories that Hollywood gives to “work for hire detectives” to solve the murder or any other kind of story is realistically given to police detectives. These professionals solve the cases while non police detectives get the uneventful surveillance jobs.

The jobs of many detectives is to find out if someone is cheating on their spouse, then deliver either the pictures or recordings to prove it to the client. They collect their payment for delivering this information as their job. People hire detectives because they are trained to be invisible. If people don’t think that they are being watched then they will have no problem doing the deeds that they are out to do which will surely get them caught.

The most common tools for a detectives like bugs, GPS trackers and hidden cameras. All of the tools that a detective needs are available at spyassociates.com. This website offers all the tools a detective needs to do the job at very reasonable prices.

© 2005 Copyright www.spyassociates.com.

About The Author

Joe Andrea Gooden

To learn more about Spy and Surveillance Products visit http://www.spyassociates.com. Read other related articles at http://spyassociates.blogspot.com/.

More people are able to afford digital cameras because their prices are falling but the number of characteristics is rising so it is important to be able to compare digital camera features.

The first step in being able to compare digital camera features is to decide what you want to get out of your camera. If you compare digital camera prices you will see that for shooting family snapshots you can get a good basic digital camera for under $400, while a professional model is over $2,000. When you compare digital camera features you need to know the extent of the use you are going to get out of it.

It is essential when you compare digital camera options to understand the issues of image resolution, which is measured in megapixels. Basically, the more megapixels, the higher the resolutions of the final image but you definitely need to compare digital camera images with your actual requirements. This is best done if you compare digital camera resolution with the size of the images that you want to print and you will find that a 1-mg camera can create a 3-by-5-inch (7.5 by 13 cm) photo-quality print; a 2-mg camera will make a 5-by-7-inch (13 by 18 cm) print; a 3-mg camera will make an 8-by-10-inch (20 by 25 cm) print, and a 6-mg camera will make a 9-by-13-inch (23 by 33 cm) print.

One of the other points to consider when you compare digital camera prices is to look at the complete package that is offered. Some included extras to look for when you compare digital camera packages are if the camera includes a cable for your computer and if it comes with image-editing software that works with your computer. If these are not included it is still possible for you to buy them separately but you need to allow for this when you compare digital camera prices. Another important point to consider when you compare digital camera options is to choose a camera with removable memory in addition to built-in memory.

All of the cameras that you are considering when you compare digital camera features should have an LCD screen for viewing pictures, a built-in flash, a timer, and a time/date stamp on even the most basic camera. You should also look to compare digital camera packages that have optical zoom, not digital, if you need a zoom capability and most midrange cameras should have high-quality optical zoom lenses but it is still worth checking to make sure.

About The Author

Steve Gargin is the administrator of http://digital-camera-reviews.helper-guru.com/casio-slim-digital-camera/index.html which is a great website dedicated to giving free advice on Digital Cameras.

Considering the innumerable varieties of cell phones in the market, it is quite a challenging task to choose the best one. However, the basic criterion of selecting the best cell phone is to be absolutely clear about what your needs are. The best cellular phone is the one that is absolutely right for you. And, of course, you can only have the best cellular phone when you pay for what you want.

Tons of offers are also available. There are free cellular telephone offers, prepaid cellular, digital, mobile, web enabled and many more. No one can tell you which cell phone is best for you because every one has different needs when it comes to their cellular telephone. Some people want absolutely basic features while others want a lot of totally fantastic features. Some need a cellular telephone for e-mail, faxing and surfing the Internet. Many people want it to be top of the line while others prefer simplicity.

The process of buying a cell phone is so confusing. There are simply so many different handsets, networks, deals and call costs to consider that buying the right phone for your usage and budget can be very difficult.

Here are a few tips to help you choose the best cell phone. First of all, decide how much you want to spend and be clear on the features you need. Remember that the more the features, the higher the cost.

Purchase a battery with a decent battery life and judge the mobile phone by the talk time it gives. The bare minimum should be 2 hours of maximum talk-time plus 90 hours of maximum standby time.

Shop and compare for pricing and service. These days, quality phones are very cheap. There is a proliferation of cell phone makers including Nokia, Motorola, Ericson, Siemens, Samsung, Sony, etc. More importantly, cellular plans have come down enormously in overall price with some caveats.

Some standard features include caller ID, phone book with fast dial, call waiting, voice mail and auto-answering. Some also have other added features like your first incoming minute free. The high-end cell phones will have voice-a ctivated dialing, SMS, 2-way paging, games, scheduling calendars, digital organizer and all the standard features. The main thing is to see what fits into your life style best and also to be sure when and if the features expire.

While making a cell phone and service plan decision, remember that everybody’s needs are different. So what’s good for your friend may not be the best choice for you. Your best bet would be to search online for websites with good cell phone comparisons in order to get a quality cell phone offer.

To make sure that your cell phone comparisons are complete look at Nokia cell phones, Ericsson cell phones, Sprint cell phones, Motorola cell phones and Samsung cell phones. Research the different free cell phone offers, prepaid cell phones and service plans from brand names like AT

About The Author

Telefon Wirles is the editor and proprietor of IP Electronics which is a premier source for Cell Phone information. For questions or comments, go to: http://www.ipelectronics.com

It’s Time To Go Cell Phone Shopping! Find Out How To Buy Mobile Phones And Why Online Shopping Is A Good Option.

The best way to go cell phone shopping is to do it online. Log on, find a quality cell phone search engine and start looking. Whether or not you choose to actually buy the phone online is a different story, but researching for mobile phones is always best done online.

When you’re cell phone shopping, the important thing that you must remember is to compare the mobile phones. Don’t just look and compare the prices, but compare phone features, ratings and even reviews. All these will help you decide which cell phone you should buy.

Before you can start shopping for a cell phone, you have to first ask yourself – what kind of phone am I looking for? Learn about the types of features and functions cell phones have and find out which mobile phones have the kind of features that you like. Also take into consideration how much chatting you intend to do with your phone and pay attention when reviewers highlight the cell phone’s battery life. All these questions need to be answered before you buy your mobile phone.

Once you’re done cell phone shopping, you might want to consider ordering online. Apart from a wide selection of cell phones for you to browse through, you can also get some of the best deals online. You can actually get cheap cell phones online because there is no dealer charge. So now that you know how to go about cell phone shopping, get to it! Buying mobile phones has never been easier with online shopping.

About The Author

John Lim

Get the best deals on all cell phones! Visit http://www.cool-cell-phones.com now for free cell phone reviews & mobile phone shopping tips.

The worldwide Global Positioning System (GPS) network was designed by the US Department of Defense, as a way to track one’s exact location anywhere in the world.

The GPS network consists of 24 navigation satellites, which orbit the planet at a height of approximately 12,000 miles. These satellites each orbit the earth twice every 24 hours, and they are set up in such a way that they can send signals to any location on the planet, whether it be land or sea, and no matter how remote.

The 24 GPS satellites are continuously beaming positioning data, which can be picked up by GPS devices ( http://www.gpsdevices.info/ ) on the ground, and used to calculate exact latitude and longitude coordinates. Depending on the device that is used, this data can be accurate to within a few meters.

Some GPS devices also provide advanced features such as dynamic mapping and detailed driving directions.

Despite the common misconception that GPS-enabled devices are prohibitively expensive, and only useful in scientific and military operations, many of these useful gadgets are primarily designed with the consumer in mind. For example, GPS handhelds ( http://www.gpsdevices.info/gps-handhelds.php ) can be carried around on one’s pocket, and are very useful for a number of functions. Certain companies, including Nextel GPS ( http://www.gpsdevices.info/nextel-gps.php ), have even begun integrating GPS technology with common consumer products such as mobile phones.

About The Author

Jeremy Maddock is the webmaster of http://www.TeleClick.ca – a trusted source of telecommunications industry news.

Nearly every high school student, and even many junior high students, has a cell phones. This makes it very easy for you to keep tabs on your teenagers with cell phone listening devices. Because they are interested in have phones that allow them to call their friends, you will be the hero when you give them a cell phone. And because you want to keep tabs and make sure that they are not engaging in destructive behavior, you can make use of these cell phone listening devices to keep track of where they are and what they are doing.

The great thing about today’s cell phone listening devices is that they do more than just let you listen to conversations over the cell phone. They also let you hear what is going on in the room, and they come equipped with GPS trackers. These are great because you know where your teenager is, as well as what she or he is doing.

Car tracking devices merely let you know where your car is. There is no way of knowing whether or not your teen is in the car. When you make use of cell phone listening devices with GPS tracking capability, you can know where your teen is. The phone is something he or she will keep on the person. The car can be parked where it should be, and then someone else can give a ride to someplace forbidden. A cell phone bug is a more complete device.

In addition to showing location, cell phone listening devices also let you listen in. The most advanced device works just like a regular cell phone. Your teen will get incoming calls, have a phone book, make calls, and even sometimes have a camera on the phone. The only difference is that you have the power to listen in. You dial a secret secondary number that gives you access to the phone. You can hear the conversation over the phone (and record it) or you can activate the microphone on the phone that picks up the sounds in the room.

You can always know exactly what is going on with your teens you make use of cell phone listening devices.

(c) 2005 Copyright www.spyassociates.com. This article is about: Cell Phone Listening Devices.

About The Author

Kingston Amadan

To learn more about Spy and Surveillance Products visit http://www.spyassociates.com . Read other related articles at http://spyassociates.blogspot.com/.

There are a couple of different ways that cell phone bugs can be used. There are fairly inexpensive low-tech cell phone bugs, and there are more expensive and much more rewarding, devices that can be used to hear what you need to hear, but that others might try to keep from you.

The first category of cell phone bugs is not really a cell phone at all. It merely looks like a cell phone. It can receive calls, and it will call you automatically, but this phone is not meant to be carried with you. This bug is meant to be “forgotten” or “charging” at the home or office. It plugs into a splitter that shares a phone jack with a regular phone. When a call is made, you can listen in to both ends of the conversation by use of your bug. The bug will even call you when the subject places a call so that you can listen in.

One of the cell phone bugs that require you to take a more active role in listening is a cell phone that is equipped to pick up transmissions by cell phones around it. Cell phone calls are among the easiest to intercept, as the sound is carried on frequencies right through the air. All you have to do is be in the vicinity of your subject and then dial in to your cell phone bug. It looks as though you are talking on your cell phone, but really you are listening in on a conversation.

Finally, the most advanced of cell phone bugs let you listen in, even if you are on the other side of the country — or even the other side of the world. This type of bug works like a regular cell phone. Give it to your subject, and then you can listen in to what she or he is doing whenever you want. The phone has a standard number, that anyone can call, and a secret number that only you know. When you call the secret number, a microphone is activated and you can listen in, not only to conversations held on the phone, but also to what is going on in the same room as the cell phone.

These devices are innocuous and common. They look like what everyone today has and seems to need. You cannot go wrong when you get the information you need using cell phone bugs.

(c) 2005 Copyright www.spyassociates.com. This article is about: Cell Phone Bugs.

About The Author

Shawn Davis

To learn more about Spy and Surveillance Products visit http://www.spyassociates.com. Read other related articles at http://spyassociates.blogspot.com/.

Vehicle tracking is widely known now as something that can be bought and then placed inside the car. These vehicle tracking devices make use of a global positioning system (GPS) that can find the location of the device anywhere on the planet. Because these devices make use of satellites, they work anywhere in the world, and can be accessed from any computer if one has the right software and knows the proper codes.

With vehicle tracking devices like Lo/Jack (used by law enforcement) many people protect their cars from theft. But until the advent of the OnStar service, these devices had to be purchased and then put into the car. But now many GM-made vehicles come standard with OnStar built right in, and there is more to this service than just vehicle tracking.

OnStar makes use of vehicle tracking as a sort of safety measure. You have to pay a monthly service, however (many of the dealers that sell cars with this service offer a year free). You can call OnStar on your cell and they can perform a number of services, including unlocking your doors if you lock your keys in. This might actually worry some people, as it is uncomfortable to know that someone can just unlock your car door like that.

But, the main safety advantage is that if you are in an accident and cannot use your phone, the OnStar people can use the vehicle tracking to locate your car and send emergency crews. This can offer peace of mind. But it does not completely erase the privacy questions raised by a service that has almost total access to your car. Some people are not comfortable with this arrangement. Besides, if you sell the car, there goes your device. When you own the device separately, all you need to do is transfer it to the new car.

Luckily, if you want to be able to have vehicle tracking without the creepy privacy violations, it is possible to buy vehicle trackers separately from a variety of reputable online dealers. This can give you true peace of mind, knowing that your car is as protected as you can make it with your very own vehicle tracking.

(c) 2005 Copyright www.spyassociates.com. This article is about: Vehicle Tracking

About The Author

Shawn Davis

To learn more about Spy and Surveillance Products visit http://www.spyassociates.com . Read other related articles at http://spyassociates.blogspot.com/.

Discover The Best Way To Buy Cell Phones. Here Are Tips On Where To Look For The Best Mobile Phone For You.

You might think it’s easy to shop for the best mobile phone out there. Before waltzing into any cell phone shop at random, there are a few things you might want to know when you buy cell phones.

Right from the start, you need to know that there are so many mobile phones out there. Some of them will be feature-rich, others stylish, and sometimes these cell phones are just plain ol’ practical. What you should look out for is a cell phone that has a good blend of design, features and performance.

If you’re shopping or buying a cell phone from the store, don’t just take the sales person’s word that the ones they are selling is the best mobile phone. Have a look at the models on display and check them out for features and functions that might be important to you. If they have a working model for you to test, that’s even better.

In reality, the best way to buy cell phones is to go online and do some research to see what you like. On the Internet, you’ll get nice choices of the latest cell phones as well as some previous models. When it comes to choices, the best option is to head to a cell phone site. There you can really run through some of the best mobile phones in the market before deciding what you want to buy.

I’d really recommend going online to browse for the best mobile phones not just because its selection, but also because you can get some great deals when shopping online. Whether it’s a new cell phone or something used, you’ll be able to buy some really good stuff at cheap prices if you take the time to scout around. So if you’re serious about getting a mobile phone, get online because there’s no better place to buy cell phones.

About The Author

John Lim

Free cell phone reviews at http://www.cool-cell-phones.com ! Find out more before you buy new or used cell phones online.

At first blush, it may not make sense to consider GPS car tracking as a viable business solution. However, when one thinks of what can be accomplished using such a system, and how it is actually possible to cut expenses, it soon makes sense to incorporate GPS car tracking into the business plan, especially if you have company cars.

There are many companies whose employees take advantage of company cars on company time to go out and run personal errands. This costs money not only in time wasted, but also in the cost of gas. Additionally, extra trips put more miles and wear and tear on company fleet vehicles. Eventually, little trips to the dry cleaner and to get some coffee will add up, especially if you have more than one person who has access to company cars. This is where GPS car tracking comes in.

GPS car tracking can let you know exactly where your company cars are at all times. It can also help you follow their routes. If you want to let your employees know about the car tracking system, it can also help them plot the best and fastest route to their destinations. You will know, simply by looking at a computer screen in your office, where your company cars are going, and even where they have been. You will know whether or not a car has strayed from its approved path and is making unnecessary stops.

GPS car tracking can also help you know how long each stop is. Do your employees sit around and talk for a long period of time when meeting with others or making a delivery? Did that quick trip to the bagel shop turn into a conversation and a slow cup of coffee? You can see stop and start times easily with GPS car tracking, helping you catch those who waste time red-handed.

With GPS car tracking you can take control of some of your business’s unnecessary expenses. You can keep your costs due to wasted time and extra gas down. All you need is to outfit your company vehicles with GPS car tracking.

(c) 2005 Copyright www.spyassociates.com. This article is about: GPS Car Tracking.

About The Author

Shawn Davis

To learn more about Spy and Surveillance Products visit http://www.spyassociates.com. Read other related articles at http://spyassociates.blogspot.com/.

There are many ways to listen for important information that you can use in the future. Because most people own mobile phones, and because they are on the rise as a primary phone, it can be worth your while to learn to be a mobile phone spy. Private investigators and bounty hunters can use the techniques of a mobile phone spy in order to learn information for their clients and gather evidence. People can be quite unguarded while speaking on a cell phone; it can be the perfect way to hone your spying skills.

The effective mobile phone spy has the right equipment. Luckily, it is usually easier to get the right spy equipment in the cell phone department than it is in many other ways. Additionally, cell phone spy equipment is often less expensive than other equipment. If you are just getting your PI or bounty hunter business off the ground, starting out with some good cell phone bugging devices is a good way to start. It will help you get your feet wet and prove to clients that you have good equipment.

Another thing needed is to ensure that you do not miss important phone calls. For many a mobile phone spy, this ties right into having the right equipment. There are two different cell phone bugs that call you when a phone call is made. The Spy Matrix Cell Phone will give you a rig whenever a call is made, allowing you to listen in on the conversation without constantly checking to see if a call is being made. Likewise, basic cell phone bugs that share with the home phone can also call you whenever the phone line becomes active. This allows you to do more than one thing while waiting for the call.

Finally, the effective mobile phone spy has a means of recording the conversations she or he hears. This can be recording equipment attached to your end of the device, or it can be transmitted to a recording assembly (if you are using a phone that picks up signals near someone using a cell phone). It is always good to have the conversations available as evidence when you are a mobile phone spy.

(c) 2005 Copyright www.spyassociates.com. This article is about: Mobile Phone Spy

About The Author

Kingston Amadan

To learn more about Spy and Surveillance Products visit http://www.spyassociates.com . Read other related articles at http://spyassociates.blogspot.com/.

When the need arises for any kind of spy equipment or surveillance equipment www.spyassociates.com is the answer. This website offers all of the latest equipment for surveillance and tracking.

www.spyassociates.com has plenty of products at any kind of price level to meet the budgets of everyone that will enable you any kind of surveillance job you seek. Spyassociates.com will meet the needs from someone who just wants cool spy gadgets to a full time private detective. Some products that spyassociates.com offers is GPS vehicle tracking systems which with the help of a satellite allows you do everything from tracking vehicles to just finding your way around.

Listening products are another item available on spyassociates.com commonly called bugs, they are available in many different kinds of varieties. Bugs are used to listen in on conversations to get the information that you want or make sure that someone is staying out of trouble.

Night vision is another choice that allows you to see better at night to aid in your stake out. Night vision is used commonly by the military and law enforcement to allow you to see better during a night mission. Spyassociates.com offers products that will add to your video library with video surveillance products that take all different kinds of video. Our website Spyassociates.com offers many other types of products that will fulfill all of your spy and surveillance needs.

© 2005 Copyright www.spyassociates.com

About The Author

Joe Andrea Gooden

To learn more about Spy and Surveillance Products visit http://www.spyassociates.com. Read other related articles at http://spyassociates.blogspot.com/.

Cell phones run on various kinds of batteries depending on the manufacturer, phone size or shape and features. There are basically four types of cell phone batteries: Lithium Polymer, Lithium Ion, Nickel Metal Hydride and Nickel Cadmium.

Lithium Polymer is the most recent type and applies the latest technology in DC power. This type of battery is light in weight and will not explode even if pierced. The battery elements are enclosed in platic pouches and do not have memory defects. They last about 50 times longer than Nickel Metal Hydride batteries.

Lithium Ion is also memory efficient and longer lasting than Nickel Metal Hydride batteries but they are quite lighter. They tend to be expensive and would only fit new models of phones. Most Lithium-ion batteries apply a fast charge technique to quickly charge up your cell phone up to 80% capacity and then slowly bring it up to full power in about two hours.

Nickel Metal Hydride is also memory efficient and lasts longer than the NIM type about 40 times. This type of battery is good for people who need rapid charging and if used with a car charger can be fully charged under 1 hour. The special formula permits the concentration of energy in a single pack – sometimes about twice the power of Nickel Cadmium. This type is preferred by a lot of mobile phone users because it lasts long and is cheap. Again, they are non-toxic and appeals to environmentalists.

Nickel Cadmium are the oldest type and has a lot of memory defects. Another severe disadvantage is that they will have to be totally discharged before you can charge them again otherwise you may irreversibly damage them. Again this type is highly toxic due to the presence of Nickel Cadmium and is gradually being phased out by cell phone manufacturers.

Batteries typically have 300 to 400 charge cycles in their life span. It is so because anytime you charge your battery, the battery loses away some of its potency and thus become diminished in power.

Cell phone batteries can be pretty expensive items if you consider the fact that a Nokia 3310 battery can cost up to $24.95. Here are a few tips to prolong the life of your battery:

Dont allow materials to get stuck on the terminals as that causes the battery to lose contact with the terminals resulting in improper connection.

Keep the batteries in a cool place and allow them to adjust to room temperature before charging as the sharp rise in temperature upon charging can damage them.

The life of your cell phone depends on the potency of your battery. Knowing how they operate and how to care for them can ensure that your cellular device runs and runs well for years.

About The Author

Peter Lenkefi

For more more information about cell phone batteries please visit http://www.cell-phone-battery-search.com

plenkefi@yahoo.com.au

GPS or Global Positioning Systems is a term that most commonly conjures up images of vehicle navigation systems, space-age satellite technology, and interactive maps for outdoors-types and sportsmen. But the reality is that there are far more applications of Global Positioning Systems beyond GPS vehicle tracking or map navigation that everyday people like us can benefit from. All it takes is a bit of creativity, and some trial and error. Here are a few of the many possibilities that can benefit you right now in your busy and hectic life.

1. Know where your children are using services from companies like uLocate Communications.

2. Keep track of elderly members of your family, so that they don’t wander off alone.

3. Plan a road trip around interesting points of interests, landmarks, campsites, diners, etc, and hear fewer “Are we there yets?”- and of course get the most out of that expensive gas.

4. Get emergency road side assistance at a touch of a button from your vehicle, so you can get help exactly where and when you need it.

5. Keep a visual journal and bookmark collection of your favorite hot spots, sceneries, and points of interests, that may not be listed in any travel guide (You can create your own mini travel guides and memories).

6. Find lost pets easily using collars with built-in GPS, better than running around in your pajamas hollering like a maniac.

7. Feel safer with cellular phone 911 calls, so emergency personnel can pinpoint your location once you make an emergency call. Please double check your carrier service to see that it has GPS features and get a primer on how it works if possible.

8. Get to your interview, or any important time sensitive destination or engagement, faster by finding shortcuts and correct directions.

9. Find a good Italian restaurant near your movie theatre on the fly.

10. Track your luggage, laptops, and anything of importance while traveling.

11. Track and find family, friends in a crowded concert, graduation, or any social gathering.

12. When going on a vacation, feel free to separate from group for a while to venture on your own based on your own interests and find them later on with your GPS enabled device- even in an unfamiliar place.

Our ability to use GPS so far is limited by the relatively poor connection to the satellite feeds when we are indoors in buildings, homes, or behind anything that could obstruct the GPS connection. However with the investment and development in a new satellite network called Galileo which should be completed in the near future, these problems should be eliminated drastically. Despite these problems, GPS still offers a world of benefits as mentioned earlier, and with any technology, it will only get better.

In addition to more practical usage applications, GPS will make a great educational and fun gift for your loved one’s and friends as well. Consider just two of the many creative and educational uses of GPS:

1. Stay physically active and fit by playing RayGun! A locational based cell phone game based on GPS technology.

2. Become more cultured, make global friends, and learn about the world playing GeoCache, a global GPS based treasure hunt.

With many affordable feature-rich models to satisfy anyone’s preferences and budgets, now is as good a time as any to learn more about GPS technologies, which are surely to become more assimilated into the mainstream within the decade. One day we will take these things for granted just like we do now for the internet and cell phones. The key is to dive in, without paralyzing yourself with the overwhelming array of choices in the GPS market, and enjoying some truly amazing technology.

About The Author

Simon Wyryzowski is a GPS enthusiast and regular contributor to GPSZoom.com. For even more practical, creative, and common uses including GPS tracking services for people, please visit http://www.gpszoom.com/.

Copyright 2005 GPSZoom. This article may be reprinted as long as it’s contents are not modified and the author’s credits and live link are left intact.