Lost About Gps Heres Some Direction

Writen by Keith Thompson

If you've been confounded by all the technical jargon and hype surrounding GPS, confusing what's turning out to be a very useful tool, allow me to shed a little light on your roadmap to deciding whether or not this technology is for you! Originally designed with military applications in mind, the technology was made available to mere mortals in hte 1980's for the many and varied uses we've found so far for these special tools. Not only handy for auto navigation, GPS units have made their way into maritime navigation, backcountry uses, and much, much more!

How does GPS work? GPS (which stands for Global Positioning System) allows you to pinpoint your position anywhere on the planet to within an average of 15 meters, with some units doing much better than that. Twenty-four GPS satellites, paid for and placed in orbit by the Dept. of Defense courtesy of your tax dollars, send signals back to terra firma 24/7. These signals are retrieved by your handy dandy GPS receiver which uses three sources (satellites) to triangulate this information and compute your actual position. If there are four data sources, even altitude can be determined. Since there are normally eight satellites in line of sight from anywhere on earth, the opportunity for accurate positioning exists. Other things that can be determined besides latitude, longitude, and altitude would include things like speed, sunrises and sunsets, bearing, distance and more. While they will work in any weather, some hindrances would be electronic interference, buildings, and certain terrain. A good rule of thumb is that the units will generally not perform underwater, indoors, or underground. There are currently two Global Navigation Satellite Systems in use. Besides GPS, there is the Russian Global Navigation Satellite System (GLONASS) Protocols are constantly being refined to enhance the abilities of these systems. A bright light on the horizon is Galileo, scheduled to go online in 2008, which promises even greater accuracy and functionality.

So how do I know which GPS unit is for me? Quite a few choices now exist for consumers in the GPS marketplace. Whether you need a handheld unit for backpacking or boating, or one for your automobile (they are becoming an attractive option!) or for one of a myriad of uses, there are several reputable manufacturers of quality GPS units out there to help you find your way through the maze of choices. Names like Magellan, Garmin, Rino, Etrex and Meridian lead the market, and are readily available. Take your time, check out the various features each has to offer, and get yourself outfitted with one of the more useful and efficient navigational tools out there today!

Keith Thompson is the webmaster at Best GPS Review where many resources and information on GPS can be found.

Digital Radios Amp Digital Radio Alarm Clocks

Writen by Chris Milller

Digital radios offer you a variety of options for that early morning wakeup call. No matter your taste, or even your satellite radio provider, rest assured that you will find a setting to your liking. Whether you prefer to wake up to the sound of music, talk radio, or even comedy, your digital radio can provide you with what you are looking for.

The majority of digital radios can be more versatile with the purchase of a home adapter. With this adapter, your digital radio can be used in your home, car, or other portable means. The installation is easy, most just snap right into your existing digital radio. Once installation is complete, you now have a digital radio alarm clock with the option to wake up to whatever your sound preference might be.

In the United States, XM Satellite Radio is probably the most popular choice for a satellite radio service provider. XM offers two options for those interested in digital radio alarm clocks. The Audiovox Xpress has the versatility of being used in the car as well as an alarm clock in your home. Simply set the alarm time, select the channel, then simply fall asleep. For those that do not use a car in their daily commute, one great option is the Delphi MyFi. This digital radio receiver is portable, similar to an iPod, but has the option to be placed in a home stereo unit at night. Once it is connected, this unit can serve as a digital radio alarm clock.

Sirius Satellite radio offers home kits for most of their receivers. With this kit, your digital radio can also be used as an alarm clock. Using Sirius is beneficial in that their products are designed for all their add-ons to be compatible with each other. Simply purchase a receiver and home system, connect them and set the desired alarm time.

As an author at http://www.eZ-search.us, Chris Miller contributes to the growing content found within the site and shares his knowledge about digital radios.

What Are Gps Systems And What Are They Good For

Writen by Shakib Nassiri

GPS systems all started out in the army in the year 1970. In the army, many soldiers needed navigation systems to know their directions around other countries. Without this device it would be really hard for them to find their way around. This device has saved much of the soldiers time in war and has also saved them many lives. GPS systems are very powerful devices and are a great navigation system to use to get around. So what exactly are GPS systems?

GPS which stands for global positioning system, according to dictionary.com is: A system of satellites, computers, and receivers that is able to determine the latitude and longitude of a receiver on Earth by calculating the time difference for signals from different satellites to reach the receiver.

GPS systems have gone for beyond just serving the army. They now serve just about everyone. These navigation systems help drivers find there way through city streets and help hikers find their way through the rough terrains of the mountains. They also help pilots find their way around the skies as well as helping mariners find their way around the great sea. The GPS systems technology can help serve anyone in need of it.

GPS systems are especially a great thing to have for men, and I'm sure all women would agree. As everyone knows men don't ask for directions. If a man is just to cool to ask for directions he could simply use his navigation system and would never get lost and of course would never have to ask for directions again. This saves the time of the wife who always would have to end up asking for directions. If you really think about it, using the GPS to get directions is a form of asking for directions, but shhhh don't tell any man this.

When you decide to buy a GPS system for yourself, I would recommend any Garmin GPS. Garmin's are the number one brand name for GPS's and I've heard nothing but good things from people who have bought them. By all means do your research on all different types of GPS systems but at the end you'll realize that no other navigation system can beat the Garmin brand.

Shakib Nassiri, CEO of SplayTech – For the lowest priced GPS systems or any other consumer electronics product please visit http://www.splaytech.com

Gps And The Military

Writen by Steve Joseph

For those of us in the military, the humble gps unit is far more than a luxury, in fact gps is a necessity. GPS units allow soldiers and officers to get accurate and timely data such as location, altitude and time. In many cases, these rudimentary pieces of data would be almost impossible to obtain without the help of GPS technology, and can prove invaluable in real time scenarios, albeit training or the real deal.

GPS units have become an especially valuable tool in the context of indirect fire support. The ability to coordinate artillery and fast air support has been greatly enhanced with the advent of GPS. This is primarily due to the fact that GPS allows men in the field to accurately reference their position and hence calculate their proximity to targets. Essentially, this greatly reduces the inherent dangers of being on the ground during live firing.

Another aspect of GPS technology is that is has greatly increased the potential for command and control of soldiers. Real time LocStats and the ability to de-conflict a battle space are just two of the giant leaps that have been made possible by GPS. Many of the other benefits lie in target acquisition and the adjustment of offensive fire. Furthermore, GPS is quickly reducing the need for human adjustment of artillery as the combination of laser and GPS begin to realize their potential. The interfacing of these two tools is resulting in a degree of speed and accuracy that can scarcely be matched by humans.

One major criticism of the use of GPS has been the loss of field craft within the military. Due to time constraints and ease, the skill of navigating by map and compass is slowly being lost. The theory is that GPS units are used as a secondary tool to traditional navigation techniques, although in reality handheld GPS units have become a primary means of navigation for many soldiers. Simply walking in the direction that an arrow on an LCD display is pointing is becoming more common, but perhaps this is the face of progress. Moreover, in a game of life and death who can blame people for choosing speed and accuracy over tradition.

The author is a regular contributor to http://www.thegpscentre.com and permission to reproduce this article is given only on the basis that all links remain active and intact.