Iridium Satellite Phones



             


Thursday, January 31, 2008

Samsung Satellite Phones - New Age Phones Supporting DMB Features

When it comes to innovative and feature-filled phones, Samsung satellite phones are always one step ahead from other ordinary phones available in the market. One of the latest additions in the already existing line of DMB phones (SCH-B100 and SCH-B130) is Samsung B200. As compared to its predecessors, B200 cell phone is an advanced version of DMB phone with more functions and much better battery life. According to company officials B200 has a large capacity battery (1300mAh) that allows users to continuously view the screen for more than 3 hours. Contrary to common belief that DMB phones consume more battery the B200 is built to address the battery-depletion problems that have plagued other common DMB phones. Thus, Samsung B200 can be viewed as a true satellite Digital Multimedia Broadcasting (DMB) phone in the market.

New Slide and Rotation Design Phone with DMB Support; Ending the Era of Poor Performance Old Age Phones

To make viewing more comfortable, this new phone from Samsung is equipped with "slide and rotate" form factor. That means you can slide it vertically like any sliding phone and then can rotate the screen horizontally for better viewing of TV or other mobile content. Moreover, there is no need to keep your hands busy while viewing the screen as you can pull out the stand behind it to put in front of you on the table. This great feature allows you the joy of horizontal screen, so you can enjoy multimedia functions, such as TV, movies and games.

As a new era smartphone, the B200 has resolved many problems such as poor battery life which was one of the most common problems of DMB phones. So, B200 cell phone allows you to view screen for more than three hours continuously as it make use of a powerful 1300mAh battery. And, just like any other smartphone the B200 also has a 2-megapixel camera allowing users to enjoy great photo quality that is as good as digital cameras. Additionally, this versatile phone also offers a variety of multimedia functions, including MP3 player, TV-out function and video viewing. Users can enjoy a high quality clear video reception through the phone's 260,000-color, 2.2-inch wide LCD screen.

For more information, visit: http://www.cell-phones-n-plans.com/.


Alison Lelliot is a successful author and regular contributor to http://www.cell-phones-n-plans.com. A wireless industry resource featuring reviews and comparisons of cellular service providers, manufacturers and carriers, and their phones and plans.

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Samsung Sliding Phone - Enjoy Satellite DMB Phone With 'Slide and Rotate' Form Factor

Samsung sliding phone is adding a whole new concept in the history of DMB satellite mobile phones with its sliding and rotating feature. Undoubtedly, satellite Digital Multimedia Broadcasting (DMB) mobile phones have brought a revolution in the mobile phone industry. The undisputed forerunner in this field is the B200 cell phone from Samsung Electronics, a global leader in semiconductor, telecommunication, digital media and digital convergence technologies. This unique phone with "slide and rotate" form factor was first unveiled at MIPTV/MILIA in Cannes last April, and now is the latest addition to Samsung's growing line-up of satellite DMB phones.

In addition to the sliding and rotating form factor, this phone is one of the best and comfortable DMB devices for viewing DMB services and receiving calls along with other features. Due to its sliding and rotating feature that can rotate the LCD screen 90-degrees, the photography and video recording has become really simple and convenient. In sum, using this unique cell phone you can enjoy a host of satellite DMB programs in combination with several other interactive features such as playing games, photo-taking, MP3 player, and VOD with more convenience and ease of use.

Improved DMB Phone with Longer Battery Life and Lesser Weight with Great Smartphone Features

Those who have either used or heard about previous DMB phones know that these phones have bad reputation due to their poor battery life. But, as a modern age and technologically advanced DMB phone, B200 is here with several great facilities which were not available in older DMB phones. For example, its large capacity battery (1300mAh) allows users an uninterrupted viewing the screen for more than three hours. That is truly remarkable. Additionally, it is capable of multitasking which ensures users to talk on the phone and send SMS while watching satellite DMB content. To make the B200 a compatible phone for more comfortable DMB program viewing, it is equipped with a mini pedestal attached to the battery. In that case, the pedestal enables the phone to stand on a flat surface and you can watch your screen hands free, like a mini TV screen in front of you. Undoubtedly, Samsung's B200 is a masterpiece that combines great technologies in comparatively smaller and beautiful design.

For more information, visit: http://www.cell-phones-n-plans.com/.

Alison Lelliot is a successful author and regular contributor to http://www.cell-phones-n-plans.com. A wireless industry resource featuring reviews and comparisons of cellular service providers, manufacturers and carriers, and their phones and plans.

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Tuesday, January 29, 2008

Iridium Satellite Phones

Prior to the boom in technology, there were several predictions that the satellite phone industry would crash. Then in the year 1990, it happened. There were a lot of investors who have thrown millions into the satellite phone industry. With a confident presumption that there would be millions of subscribers who would purchase the product as an everyday gadget, all the investors were dreaming of their riches. And then the industry crashed.

But soon, the demand for the satellite phone picked up again. With lowered prices and cooler handsets, more and more people have found the necessity to own one.

Satellite phones, as the name implies, use satellites to get a signal or transmission. They can be used virtually everywhere. Unlike cellular - a phone that has a limited range - satellite phones allows you to call and receive calls virtually anywhere in the world. These are great for those living in areas where cellular networks don't exist. There are still other countries that do not recognize this telecommunication system but time will come when the satellite service will be available all over the world.

The Iridium network is a leader in the satellite phone market.

The Iridium Satellite System is composed of three major components:

* The Satellite Network * The Ground Network * The Iridium Subscriber Products (This includes the phones and the pagers).

The design of the Iridium Network enables voice and date communication to be routed virtually to any part of the world. The voice calls and the data transmissions are transmitted from one satellite to another until they reach the satellite above the Iridium Unit (the handset). That is the time that the signal will go back to the earth.

The Iridium Satellite Telephone System is regarded as the only provider of truly global, truly mobile satellite voice and data solutions with a complete coverage of the earth including the oceans and the Polar Regions. This is one of the reasons why it is more expensive compared to other satellite phones.

With its convenient, portable, fixed mobile communications and the ability to monitor your business anywhere you are, Iridium is ideal for your day-to-day voice or basic data communications in some of the remotest parts of the world.

The question now is which phone to use?

This is where reviews come in handy. There are a host of reviews available in the internet showcasing the strong and weak points of each handset available. From these reviews of iridium satellite phones, you will be able to choose which one will be perfectly right for you.

Take the time to read the reviews and be completely sure before you decide which iridium satellite phone to purchase. Be connected wherever you are.

Nicola Kennedy publishes articles and reports and provides news, views and information about communications and Iridium Satellite Phones at Satellite Telephones Information.

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Monday, January 28, 2008

Satellite Telephone Technology Explained

With recent developments in technology, everything is instant, life becomes more convenient.

Even in the field of communication, there is no need for us to exert too much effort - unlike the past when it took quite a long time for our predecesors to pass a message from one place to another.

But now, it is much easier. Inventors are not content with the modernization of telephones and cellular phones, they still discern for something more innovative. This, then, is Satellite Phone Technology.

So, what is a Satellite Phone?

It refers to a subscription radio service. It is similar to cable television - it provides for a wider range of programming and functions that cannot be found on traditional AM or FM radios.

A satellite phone is a telephone-like device that sends radio signals direct to a satellite, then back to the earth station from where the call can be directed to the so-called 'Public Switched Telephone Network' or the PSTN that serves as a cellular network. The Low Earth Orbiting or the LEO is the most commonly used satellite now. The gateway processes make everything possible because even if the person is in the middle of nowhere, he can still access to the satellite phone network, by using compatible satellite phones.

Satellite phones are used globally but the only exemption is it cannot work indoors. Bear in mind that, there is a necessity for a clear line of sight from telephone to satellite to utilize the satellite telephone system. The more open the space you are in, the better the reception. This is why satellite phones are used extensively in the desert. The weather condition also affects the performance of the system. Satellite phones have limited bandwidth.

Second, you must also know the areas covered by the Satellite Phones. While it is true that you will have a global coverage for your satellite phones but you have to consider certain limitations. Some of the countries that are excluded from the coverage of its network are: South Korea, North Sri Lanka, Hungary and Poland.

But if you work, live or travel on specific areas that are outside the coverage of your cellular phones or even a landline, then a satellite phone is essential for you to keep in touch with the rest of the world. Unlike other GSM phones, satellite phones are more independent when it comes to the location.

If you think that a satellite telephone may be useful to you, there are several excellent online resources for further information.

Nicola Kennedy publishes articles and reports and provides news, views and information about communications and Satellite Telephones at Satellite Telephones Information.

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Satellite Telephones - Saving the World?

Communication is the way of man's expressing thoughts and opinions. It involves sharing the message that you want to impart to other people. It is the tool for understanding each other.

What would be the world be like if human beings were unable to communicate with one another? A world of chaos.

People used to communicate simply by talking at each other, but they found it difficult if the message had to be transmitted to far places.

But as time went by, through the utilization of the modern day technology, things become easy. Started from the telephones at home, down to the cellular phones and the recent invention, the satellite phones.

How do these satellite phones work?

Satellite phones are invented in case of emergency and unexpected circumstances. They allow you to have voice and data communication for instances that the local landline and the cellular systems are disrupted. This will serve as your ultimate resort for communication in the event that the telephone infrastructure cannot manage to handle the volume of calls or there is a disruption that occurred to the network.

Satellite phones are very different from cellular phones. Unlike the latter, it does not make use of the call towers. Rather, they use Low Earth Orbiting Satellites. The moment that you turn on the satellite phone, it will already connect to the any number of satellites that shows compatibility to yours.

When you make a call the signal of the phone goes to a satellite that is directed down to a ground station or a gateway that is also directed to your call destination. The gateway processes will take care of the switching of the phone rather than the cellular network. This is the solution for those who worry about places that do not have network. The gateway allows you to use your phone even if when you are in an area that is far from any cell tower.

See how convenient satellite phones are. In event of an emergency a satellite phone is a valuable asset and could mean the difference between life and death where communication is critical. It will be an instrument towards saving the world, because despite the odds you can still communicate with others.

Nicola Kennedy publishes articles and reports and provides news, views and information about communications and Satellite Phones at Satellite Telephones Information.

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Friday, January 25, 2008

The Legacy Of The Satellite Phone

Satellite phones today are of great use if you are already getting rid of your obsolete telephones at home or your miserable cellular phones due to signal failures.

It was in the early 1960 to 1990's that the satellite phone was introduced to the market. But before its arrival let us first trace its origin by glancing at its brief history.

The pioneering satellite phone that offer the first ever planetary coverage is known as the Iridium Satellite Phone, which until now still exists. The name Iridium was derived from the chemical element in your periodic table, Iridium with an atomic number of 77. In the beginning it consists of 72 active constellations but at present it has only 66 active satellites.

Unlike other satellite phones, Iridium is the only constellation that allows the planetary coverage. This is because of its inter-satellite links that the other satellite phones do not possess. But this is not global because there are some countries that do not have the network yet.

The original design of the Iridium came out as early as 1960's with control and time-triggered messages over its orbit and it will be uploaded each time the satellites pass through the pole. But it was found out that this design did not offer the sufficient bandwidth so it was turn down in the market.

Since it is considered to be the pioneer of the satellite phones, it paves the way of other companies to discover new models of mobile phones. There starts the development of the Motorola.

It was on November 1, 1998 that the Iridium Communications service was launched and due to insufficient demand for the service and poor management, a tremendous bankruptcy took place on August 13, 1999. The worse thing that happened was, since there was the bankruptcy that is why whether big or small investors nobody receive a return of their investment. It was a gamble of money.

Numerous unqualified inquires came in for the purchase of Iridium until 2001 when a group of private investors founded Iridium Satellite LLC and re-established service. Due to necessary effort that was made by the Iridium companies, gradually it recovered from its collapse.

From that point, there are other several satellite telephone communications that came into market. One is the Globalstar, but it is of a lower earth orbit satellite constellation because it only consists of 48 satellites. As compared to Iridium, it has no inter-satellite that is why it has no capacity to have the entire planetary coverage.

The first satellite of the Globalstar was launched in February 1998. It repeated the same failures like of the Iridium which also cause to its bankruptcy. But in order to regain the trust of their investors they also make several moves to settle the matter. And it was in the year 2001 when they even had a meeting with their creditors.

Aside from the Iridium and the Globalstar, other satellite telephone communications companies are also starting to make a name in the market. They all have the credibility that must be presented to the investors so that they will not be repeating the failures that have committed by the pioneering constellations.

The history of the Satellite phone is boosting towards the development of the technological innovations in the world. Who knows, places that are excluded from the network will be placed in the list few years from now?

Nicola Kennedy publishes articles and reports and provides news, views and information about communications and Satellite Telephones at Satellite Telephones Information.

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Wednesday, January 23, 2008

Would you pay this much for a satellite phone?

How much does a new satellite phone really cost?

With everybody trying to keep up with the Joneses, are you ready to go out spend at least $400 on your new satellite cell phone. Unless you are a professional globtrotter or a member of the U.S. military, then ask yourself.

Do you really need to spend $400 on another phone?


But, here's the good news. With the onslaught of satellite phone rentals for less than twenty dollars a week you should be able to afford your very own satellite phone and become the coolest kid on your block.


Plus, you have numerous companies to find the right plan to meet your ever growing needs. Companies such as iridium, global star, inmarsat all compete to serve your satellite phone needs.


So, renting or buying your own satellite phone is really a matter of choice or personal preference. it just depends on how much your willing to spend.


So, if you want to be the newest kid on the block with his or her very own satellite phone which means you can be sitting on top of Mt. Everest and your reception will remain crystal clear.

Then take the plunge and get yourself a satellite phone today.

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Saturday, January 19, 2008

Satellite Phones Today

It seems a very long time since the days of the 'Sputnik'! Today satellite systems provide both voice and data communication for areas of the world where there are no alternatives. Satelite telephones help us to keep in touch when we fly or take a cruise. It also helps us to keep track and stay in contact with those brave individuals who test the boundaries of endurance and skill. We can follow their routes, talk to them and receive photographs and video from wherever they are and make sure someone is ready to help when things don't go according to plan.

How do satellite telephones work? signals are sent from the satelite phone, through an antenna to a network of satellites in orbit then back to a ground station and a conventional phone network. Sounds good doesn't it? Unfortunately good communication relies on an unobstructed path from antenna to satellite. Bad weather can disrupt the signal too. Signal link quality is generally much better outdoors but if you are on a boat or in a plane an external antenna may be required.

At the time of writing there are five main satellite phone service providers. Global Star and Iridium are the largest. They offer a variety of options for both businesses and the average user. Iridium is probably the best known for a variety of reasons. The company has 66 operational low-earth-orbit satellites with 13 spare satellites. The satellites are in orbits about 485 miles above the Earth's surface. The company supply to an extensive variety of markets which include mining, construction, leisure, government and maritime. They also provide equipment to the military and to rescue and disaster relief organisations. Companies tend to sell their services through a collection of service partners, value-added resellers and manufacturers.

Satellite phones are used regularly by the military, shipping and airlines. They also play an important part in disaster zones. Charitable organisations use them to discover what help is needed as soon as possible when landline phones and cell networks aren't working. Tracking the signal can help guide helicopters into the most affected and even isolated areas to deliver aid quickly.

Satellite phones are also being used in the fight against terrorism. To protect the Alaskan pipeline where it is vulnerable, trucks passing close by are fitted with satellite phones. If the truck is hijacked a signal is sent via the network and the vehicle can be disabled immediately.

Satellite phones are still a very expensive option. It is more expensive than most cell phone calls. As the technology improves and becomes more widely used, the prices should begin to drop just like all useful technology does eventualy. At the moment Iridium state that the cost of a satellite phone call is comparable to the cost of an international roaming call. To improve public perception and possibly build the consumer market the industry is fund raising in Washington state to provide satellite phones and airtime free of charge to US National Guard soldiers serving in Iraq.

Steve is a software engineer and owner of http://www.satellite-phone.thecatcollar.com

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Samsung Satellite Phones - One of a Kind.

Samsung Satellite Phones: Samsung is among the worldwide electronic giants. It is a Korea based company. Now in the world of technological advancement, Samsung is constantly innovating and Samsung Satellite Phones are well known for its sheer technology.

In the market Samsung has already launched three phones. These are B100, B130 and B200. They have done well and looking at this fact Samsung is launching a fourth satellite DMB phone. The name of the new model is B250. It has a sleek design like it earlier versions. In the new phone as expected the features are more improved. And it is the smallest of the series too.

The B250 phone has a LCD screen with unique horizontal view. It can rotate 90 degrees into landscape mode. In this screen we can see movies too. We can receive text messages and take phone calls without interrupting the movie. Another wonderful thing about this phone is we can send DMB broadcast to a TV through this phone. The user can listen to MP3 songs by pressing external buttons of the phone without opening the phone. The phone has a 2megapixel camera. We can edit the photos and can morph photos and also change facial expressions.

The phone is loaded with Microsoft Office. We can open PDF files too. A 330,000-word dictionary helps us to find the meaning of any word. The phone has an external memory of 256mb. For user convenience the phone has mobile banking capability.

Paul has been providing answers to lots of queries through his website on a wide variety of subjects ranging from satellite phones to acne. To learn more visit http://www.askaquery.com/Answers/qn510.html

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Friday, January 18, 2008

What is the difference between satellite phone and cellular phone?

Satellite phone and Cellular phones are wireless devices. They almost look alike. But the way they work is totally different. Cellular phones working method is cell based. That is why they are called cellular phones. The whole network area is divided into small areas. And in each area an antenna is installed. These are also called towers. When a cellular phone is moving, it keeps entering from one cell to another. When it crosses the border of one cell, the phone sends a signal to the MTSO (Mobile Telephone Switching Office). With the help of control channel the database of the MTSO relocates the phone in a new cell or area. The MTSO and Public Switched Telephone Network (PSTN) coordinate to handle cellular calls.

But in the contrary Satellite phones use Low Earth Orbiting (LEO) satellites. With the turning on of the satellite phone a signal goes up to the any number of satellites of a group with whom the phone is registered. When a person makes a call from the handset, a signal goes to the near by orbiting satellite. The satellite connects to the gateway or ground station. Then the gateway takes the call to the destination. The call can be directed to the landline, cellular phone or PSTN. Any of the landlines, cell phone or PSTN can also call a satellite phone. In the case of satellite phones the gateway takes care of calls not cells as in the case of cellular phones. If a satellite phone calls another satellite phone, the call reaches a ground station through a satellite. Then it goes up to the air to a satellite and then the call reaches the destination phone. So the gateway processes the switching of calls not the satellite.

Paul has been providing answers to lots of queries through his website on a wide variety of subjects ranging from satellite phones to acne. To learn more visit http://www.askaquery.com

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How satellite phones can be helpful?

Satellite phones have come of age and are being used by many people worldwide. Whether you are in Iraq or Afghanistan, indoor or outdoor, satellite phones can be used to communicate. Though the call rates are high, you can communicate and stay in touch. Whether you are in the hilly mountains of Himalayas or on a cruise liner, you can definitely get your calls and stay in touch always. This is one of the main factors of satellite phones. The size of satellite phones is an issue as they are a little heavier and big in size compared to mobile phones.

Clarity of Voice: The clarity in the receiving end depends upon the weather and other conditions such as indoors or outdoors. The signal sometimes may be in low frequency and the quality of calls may not be that good. Though there has been improvement in the transmission still there are many limitations while using satellite phones. If the signals are good then the clarity of voice is also very good. Satellite phones are portable and can be carried in you pocket, briefcase etc.

Paul has been providing answers to lots of queries through his website on a wide variety of subjects ranging from satellite phones to acne. To learn more visit http://www.askaquery.com

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Monday, January 14, 2008

Tips About Satellite Phones

In our modern world there are many types of modern day communication and that includes both cell phones, satellite phones, and the combination cell phone satellite services.

Cell phones work throughout North America, Japan, Europe, and China. The biggest challenges are that different areas of the world use different cell phone standards. For example in Europe GSM 900 is the standard but in the US it is part analogue and part digital, and Japan uses PDC.

If that’s not enough there are all kinds of confusion in plans within the same country. And then there are the problems with voice mail and paging. There are also all kinds of options when it comes to phones. – different sizes, different shapes, and different accessories.

Four visitors looking for cellular service in China and Europe typically cost around $50 for the first week and slightly less there after. You would either need to have a GSM phone and you will need to rent a SIM card. Your regular plan should have a service for rerouting your GSM calls once you activate it in the country you are visiting.

If that all sounds confusing and/or expensive then why not consider a satellite phone. You can buy or rent a satellite phone and you can choose between regional and global coverage. So if you are going to be traveling to many different countries you should consider the global coverage.

So what does a satellite phone offer you ? Well it’s very similar to cellular coverage but its better and there are no dead spots, no dropped calls, and when you are exploring those remote areas out in the wilderness you can still communicate with friends and family and should there be an emergency you can get help too.

Satellite communication involves low orbiting satellites the orbit the earth. Vendors like Telital, Qualcomm, and Ericcson are providing both terminals and handsets. These phones work in two different modes.

As a mobile cellular phone it will look for a service from one of the land based networks that other cellular phones use. Then if cellular service is not available it will bounce you over to satellite service. His can be very convenient because you need only one phone to cover all of your communication needs.

This is common practice within China and Japan. It’s called the public switched telephone network or PSTN. It is compatible with several services and several technologies. It overcomes compatibility problems that have typically been an issue.

The rapid changes in technology is making it harder to look at long term solutions but it always helps to have an idea of where we’ve been and where we are going and cell phone satellite services are certainly going to become more common in the next few years.

After all it’s a win-win situation for everyone. And the more it becomes available and used the more affordable it will become. Keep your options open and remember that cell phone satellite service is certainly one of those options.

Morten Hansen has been focused on the Satellite Phone area for several years and is mainly writing about subjects, that make it easier for people to understand the different Opportunities with Satellite Phones. For more details about Satellite Phones visit our website www.SatellitePhoneTips.com

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Mobile Phones And Satellite Phones - Two Tools Of A Globetrotter

There are cellular phones and then there are cellular phones. All these varieties of tele-communicating devices coming into the service of mankind, appears in a cluster of different shape, size and functionalities. If the ones in the name of mobile phones are the best friends to one's mobility, there are some in the name of satellite phones, fulfilling communication need of a maverick, globe tottering soul. Both the telecommunication devices earn maximum attraction for being wireless and portable.

If mobile phones have gathered the maximum amount of interest from the millions world over, the rapid up-gradation in the form of feature and technology augmentation has changed the outlook of this device from a bulky communication tool to a sleek and trendy gadget. Developments in terms of telecommunication science and microelectronics have not only miniaturized the mobile phones to fit the size of a fist, but also have made many of them turn into some al-rounder devices. Other than performing the roles of a communication device, mobile phones today function as a digital camera, hi-fi music system, internet browser and many more.

A satellite phone or a satphone on the other hand, is a mobile phone that is free from any mobile network to follow and works in direct communication with an orbiting communication satellite. Based on the architecture of the device, a satphone phone may be even used to communicate from any corner of the earth. The total weight of the entire device, which comprises a base or 'earth station' and a handset, comes to be similar to the one mobile phones of 1980s. The installation of a satphone comprises a rugged, rack-mounted electronics and a steerable microwave antenna tracking the movements of the satellite to which it is linked. This device though requires to be operated under an open sky, works as a communication device for the ones in expedition to any remote corner of the earth where terrestrial cellular service is unavailable.

Now be it price, network supportability, size or any other factor marking the differences between these two tools of communication, in the different stages of journey, they are the two most important devices for a globetrotter to stay connected to the world.

Andrena Markley is the webmaster of 3contractmobilephones.co.uk and deals in all kind of contract mobile phones deals. To get updated information on Pay as You Go phones and Sim Free phones visit the site.

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Friday, January 11, 2008

Iridium Satellite Phones Offer Worldwide Coverage

"When I get to the South Pole, I'll give you a call on my Iridium Satellite phone." Sounds like a statement that might be made by the hero of a science fiction novel, right? Although it may sound strange, satellite phones are not as foreign as you might think.

In fact, they are the best way to communicate from places that have little or no phone service from more contemporary sources such as landline phones and cell phones. Because of the nature of the phone, you can literally use it to call anywhere in the world you wish.

According to information posted on the Iridium Satellite's website, this phone service is the only one that offers reliable service throughout the entire world. They credit this achievement to their constellation of 66 low-earth orbit (LEO) satellites. The website states the company’s particular system allows all areas of the world, even including all of the oceans and polar regions as well as airspace, to be easily accessed by phone.

The website also indicates the Iridium phone system is superior to other satellite phone systems because there are no significant delays in information transmissions. Other positive features of this phone system include the fact they use less power, which makes the battery last longer. Iridium's hand held phones are also smaller than those offered by some other companies.

Along with voice services, the Iridium company offers a variety of other data transmission options. These options include the ability to send faxes, pages and data messages. These options allow you to stay in contact with your business or family and exchange information in any way you need to.

While these phones are ideal for industries and companies, they are also great for individuals. For instance, these phones are used by members of the United States military when they are stationed in areas not covered by traditional phone service.

The phones are also ideal for those in the construction industry who are working in places where there are no phones in place yet. Satellite phones are also ideal for use in emergency rescue or disaster areas where landline phones and cell phone towers are not working.

There are also a variety of other uses for these phones including travel purposes. Satellite phones are ideal for those in aviation or maritime positions since the phones work everywhere they may go. Those in media positions may also benefit from satellite phones in order for journalists in the field to keep in contact with their home office. Those in the mining, forestry as well as oil and gas fields may also benefit from the reliability of a satellite phone.

If you want to keep in touch where ever you may roam, or where ever your job may take you, you might be a good candidate for an Iridium Satellite phone. These phones can transmit messages literally world wide meaning if you are on the North Pole, or in the air above Australia, you will be able to connect with those whom you need to talk.

For more satellite uses please visit http://www.satelliteinnovation.com a popular satellite website that provides tips, advice and satellite resources. Try visiting our latest information page on the iridium satellite phone.

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The Difference Between Satellite Phones & Cell Phones

When discussing about satellites phones, of course many of us are aware of the technology especially those who already subscribe to satellite television.

Simply put, the way satellite technology functions is by having an earth bound device (at home for television broadcasts) which in turn will communicate with a satellite in outer space.

Television stations which offers the television service will transmit their broadcast to a satellite in space (circulating the earth) and thereafter the satellite will transmit the broadcast to all satellite receiver device systems on earth including the ones attached to our homes (usually in dish forms)

The satellites in use for the purpose of television broadcasts are called communications satellites because of it’s capabilities to transmit sounds, data, video, and graphics from one location to another location.

The type of communication used involves the utilization of a satellite capable of communicating, transmitting television broadcasts, radio or whatever signal transmitted from the earth bound satellite transmitter.

The first communication satellite, Project SCORE, was launched on 18th December 1958 to send a Christmas announcement from President Eisenhower to the world.

Important examples of satellite communications during the Space race:

1962: Telstar: Transoceanic communications satellite.

1972: Anik 1: Canadian 1st communications satellite.

1974: Westar: American 1st communications satellite.

1976: Marisat: First moving communications satellite.

Apart from satellite television, another popular use of satellite technology for the public is the satellite telephone. It provides extensive coverage anywhere around the world be it at the centre of the Pacific Ocean or in the dense Amazon jungle.

Although it is expensive, the satellite telephone is important to those who frequently explore or sail globally as there are no normal telephones that has coverage in secluded areas.

Satellite telephones were first introduced in the 1990’s. However, sales were not good as a variety of problems were encountered by the satellite phone companies.

Nevertheless, the satellite telephone had lately increased popularity for instance the Iridium satellite telephone is currently utilizing 66 satellites for its 100,000 clients. Also, Globalstar has recorded 115,000 clients throughout the world.

Satellite phone, also known as ‘Satphone’ is a mobile telephone system which allows communication via communication satellites that moves around the earth’s orbit for worldwide telephone coverage.

Many of the satellite phones utilize Low Earth Orbit (LEO) satellites, enabling it to provide a further coverage and better sound quality.

The main difference between a satellite telephone and a mobile phone (also known as a cell phone) is that satellite phones transmit signals to the nearest satellites in outer space while the mobile phone transmits signals to the nearest earth bound cellular network.

Satellite phones utilizes LEO’s to form a network which then allows an almost global coverage.

Some satellite phones use geostationary orbiting satellite services which are usually situated between 35,400 km and 48,280 km from the earth’s surface.

However, as LEO satellites are positioned closer to the earth’s surface and its network provides users with better voice clarity as compared to the geostationary satellites situated further from the earth.

The transmission delay is around 0.5 seconds thus giving LEO satellites an advantage in the form of voice clarity and quality of conversation.

Abas Kamal bin Sulaiman is a technology fanatic minus the consistent urge to buy everything that is new. He writes on a variety of technology based topics. Visit http://abassterinternational.blogspot.com

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Wednesday, January 9, 2008

Satellite Phones

With the increase of terrorist attacks, and possible crippling of the cellular networks, people attending conventions have found the viability of renting satellite phones, finding the only way to communicate anywhere with anyone at anytime. If you are a wild life photographer, going for major shoots in the deepest jungles, where the need to communication becomes difficult, the satellite phone will be of much use in times of your need to communicate. Satellite phones are mostly useful in places with no terrestrial infrastructure or in places where the infrastructure is not usable, such as, hurricane inflicted areas, flood affected areas, etc.

Today, leading industries including, Iridium, Globalstar & Thuraya are providing satellite phone solutions, with each of them offering their own unique benefits and advantages. There are various options for you to choose from, with the best phone choice depending upon your application and destination, remembering that a satellite phone does not always offer global coverage or translates into world phone. You may visit the various websites which list of the types of phones available from different companies, highlighting the features with coverage area and rates. It is recommended that you review the facts and figures before contemplating on taking up such a satellite phone.

Satellite phones made its debut in 1990s with a lot of fanfare. While commercial applications of such phones did not commence in earnest till about 3 to 4 years back, the satellite phone companies went through a lot of rough weather, failing financially and technically. Some problems do exist even today, when a satellite operator's network fail. There could be other reasons as well.

Iridium satellite boasts of over 100,000 subscribers with its 66 satellites and is supposed to be just behind Globalstar with 115,000 subscribers. Iridium has applied for another spectrum of 3.1MHz to meet its growing demand of about 1,000 new subscribers per month. Satellite phones are expensive and costly to operate, but yet it serves the purpose in communication where there is no other way of communicating.

A satellite phone, often called 'satphone', is a mobile telephone system, that communicates directly with the orbiting communication satellites and depending on the network architecture, the coverage may be global, or only for specific regions. These types of phones generally operates with the low orbiting satellites (LEOs), which is believed to provide a wider coverage and better communication clarity. The size of a satellite phone is comparable to the size and weight of the mobile phones that were used in the late 1980s or early 1990s and has a large retractable antenna. The phone equipment itself is known as a terminal.

The main difference between a satellite phone and that of a cellular mobile phone is that, while you communicate with the nearest base station in case of a cellular phone, a satellite phone communicates with the nearest satellite. This type of satphone connections do not depend upon any network. Some of this communication technique covers a large area, with the help of multiple low orbiting satellites, relaying the signals from one to the other in order to connect you to the destination that you wish to be connected.

Some of the satellite phones use satellites in geostationary orbit, maintaining almost total global coverage operating between three to four such satellites, thus reducing cost. It is important to note that geostationary orbiting satellites are placed at about 22,000 to 30,000 miles above the Earth. The LEOs, as the name signifies, are much lower in space from the Earth, 400 to 700 miles, and as such, a single satellite has limited coverage. Therefore multiple such satellites direct your call to the required destination. On the other hand, LEOs provide better communication clarity than geostationary satellites, because of the inherent delay that it introduce. The least delay with such satellites is 0.5 seconds and this is a major disadvantage of geo stationary satellites.

In case of satellite phones communicating with geostationary satellites, the main disadvantage is that, the phone requires a large antenna system for signal transmission and reception. In such cases, the antenna needs to be of high gain, which needs more power to operate. Consequently the size of the phone also increases and can be compared to the size of terrestrial mobile phones in the past, relative to the current tiny terrestrial mobile phones. Satellite phones require a clear view of the sky to operate and will not function inside a building, car or a boat. It would require external antenna system to operate in such environments. This is clearly a serious disadvantage.

In working of a cellular phone, the principle is based on dividing an area into zones or base stations called 'cells'. As you communicate while you move, you leave a particular zone and enter another. Your call is handed over from your previous cell where you were, to the new one where you are currently passing through. Your communication is electronically switched to the cell where you are in. Every cell phone and your Sim card with hold adequate information regarding the identity of your mobile handset and therefore the network is aware of where to locate you when you are leaving one cell and entering the other.

In remote areas, such communication is not possible owing to the absence of cellular network. You may have experienced that, while using your mobile handset, as you passed different zones, at a particular area, you lose your connection. The cell phone network apparently ends there. The network operates on the principle of 'line of sight’, so that the towers, set up for cellular communication, must be able to see each other. Within each cell the communication is limited to about 31 miles, as the crow flies. Communication difficulties arise in places where the tower of the cell that you have just left cannot properly see the tower of your present cell zone. This creates dropped calls or breaking up of voices. There are ofcourse other reasons for such happenings.

Satellite phones do not have such restrictions, except it needs either the clear view of the sky or an external antenna to operate. When you switch on your satellite phone, the signal goes up to the satellites and gets hooked on to that particular one or a set of satellites, with which you are registered. When making a call, the coverage that your call should have, is determined and its relayed from one satellite to the other. On reaching the destination, the signal is directed to the relevant Earth station, from where it is directed by the gateway the to the call destination. If you should be calling a satellite phone from your mobile, a reverse action takes place. The gateway processes the call and switches the call information. If you should be calling another compatible satellite phone from yours, your call information is sent up to the satellites, which is then transmitted to the Earth station. In turn the Earth station transmits it back to the satellites and then connects you to the called satellite phone.

Satellite telephony is becoming more and more necessary with the radio frequency bandwidths getting exhausted and also that he cable lines cannot be fixed to all the parts of the earth. Satellite phone technology is considered to be a formidable invention to keep communication going in this world, with its ability to let you communicate even on the move and to any part of this planet, no matter where you are. When you are lost in an expedition, a satellite phone with you would prove to be a life-saver. You will be constantly in touch with any part of the world with your phone.

Satellite phone use overseas, in the USA and around the world. We sell and rent SATELLITE PHONES. SATELLITE PHONE SALES, SATELLITE PHONE, SATELLITE CEL, RENT A SATELLITE PHONE. GSM cell phones and rentals as well. Our phones communicate to the world. SIM CARDs hold the telephone numbers and memory. Rates can be extremely low using this system. For example in 99% of all SIM CARDS incoming calls are free and calls to the states can cost a trifle. Such as, from the UK to the USA 7 cents/minute, from Israel 22 cents, from Australia 27 cents. Yes, USA Dollar cents! There are today even prepaid service providers in the USA offering rates of 10 cents per minute to call anywhere in the US to any type of phone. No contracts, no credit card checks, no bills. Pre-paid always means no minims. no contracts, no obligations. You only pay for the calls made. You'll need an unlocked GSM tri-band or quadband UNLOCKED phone. You can buy factory unlocked phones and sim cards for more than 170 or the 193 countries on earth from http://www.planetomni.com Tel.  800-815-9380

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Satellite Phones

Satellite phones are a huge part of the information revolution that is taking place in today?s world. A satellite helps you to communicate on the move. Even when you are in the middle of nowhere, satellite phones give you the choice to stay in touch. A big advantage in satellite phones is that whether you are away from a landline or beyond the reach of a cell tower, with satellite phones, one can stay in touch with any part of the planet.

Satellite phones, as the name indicates, communicate through the means of orbiting satellites that connect with main phone lines. This is a major leap forward in the telecommunications industry as satellite phone technology has displaced the need for cell towers and landlines. Satellite phones are largely useful in places where accessibility through terrestrial cellular services is not possible. Whether one is in the middle of a desert or on top of a mountain, satellite phones enable one to stay in touch.

With its wireless technology, a satellite phone helps you to talk, fax and send data from anywhere in the world. Besides giving you the benefit of constant communication, satellite phones provide high quality, affordable, and reliable services.

The retractable antenna is a distinguishing feature in these phones. Satellite phones are available in various shapes and sizes. With advancement in technology, the sizes of these phones have shrunk down in the years. These phones will work fine as long as they have a charged battery.

Satellite phones are costlier than cell phones, but the prices continue to come down.

There are a wide range of satellite cellular phones and satellite networks to choose from. One can lease, rent, or purchase satellite phones. Satellite phones will continue to be popular and they are the only aid for communication where accessibility through terrestrial cellular services is not possible.

Satellite Phones provides detailed information on Handheld Satellite Phones, Satellite Phone Plans, Satellite Phone Rentals, Satellite Phone Services and more. Satellite Phones is affiliated with Satellite Radio Reviews.

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Sunday, January 6, 2008

Satellite Phones

Satellite phones are also known as satphones. This is a type of mobile phone that uses orbiting communication satellites to communicate with other people. Depending on the type of the phone and its purpose, a satellite phone may give access to any phone worldwide or be limited to one particular region. These phones are great alternatives where phone lines do not run or where a telecommunications company is unable to set up cellular towers.

Geostationary Services

Satellite phones gain access from geostationary orbit satellites that is situated directly above the equator. This service follows the inverse square law which states that the larger the antenna the better the reception. In keeping with this rule, the phones tend to be physically large.

Low Earth Orbit Phones

Low earth telephones or LEO for short uses satellite technology. LEO technology has worldwide coverage without any problems. Satellites that provide the signal for these phones tend to fly low at high speed. The satellites orbit the globe in a short time guaranteeing worldwide coverage.

Using these satellites can be expensive to maintain so researches are being funded to try and use blimps as an alternative solution.

Uses

Because of its wide coverage, the primary use of satellite phones is for offshore military missions. When in missions, depending on the terrain such as the jungle or desserts, usually the soldiers are deprived from the use of traditional phones, and even if they did, there is always a threat to security breach or giving away their location. Through satellite phones, the soldiers are given assurance that they have access to their fellow soldiers and the headquarters.

Rescue missions or medical missions which usually take place in remote areas like up in the mountain or rural undeveloped areas where infrastructures and telecommunication services are limited is where satellite phones come in handy. Especially during emergency events a satellite phones provide assurance of connection to the necessary backup personnel and service providers.

Phones provides detailed information on Phones, Satellite Phones, Broadband Phones, Cell Phones and more. Phones is affiliated with Phone System Reviews.

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Thursday, January 3, 2008

Satellite Phones Or Cell Phones - Which Should You Choose?

Today, there is a huge selection of not only cell phones but cell phone providers as well to choose from. For most people the normal cell phone is adequate for their needs. However, if you travel a lot, particularly overseas or offshore, you will quickly find that the cell phone you bought doesn't work because there aren't any towers nearby, as in the case of traveling offshore. If you travel overseas, your cell phone won't work there either as they have their own dedicated networks.

If you are a business person and you find that you travel all over the globe, or if you find yourself offshore frequently because of the work you do or for pleasure boating, the ownership of a satellite phone is essential for communications with your friends and family back home.

Today's satellite phones are economical to buy, though the calling plans will be much more expensive compared to cell phones, and they will work just about everywhere. With a network of approximately 70 satellites encircling the globe and growing, providing coverage to most of the planet except the most remote areas, having a satellite phone will give you peace of mind that you can reach family or work associates at the push of a button.

Serious thought and consideration should go into the purchase a cell phone, but if you find yourself in the middle of nowhere, the peace of mind of knowing that you are connected to the outside world with your satellite phone is immeasurable.

Older satellite phones were bulky. Today's satellite phones are much more compact, priced affordably, and best of all, the reception is crystal clear.

Eventually, the industry will entirely be composed of satellite phones and providers as that is the next logical step. Industry leaders are lobbying hard to push their agenda by convincing political leaders and investors to consider satellite phones as the next generation in cell phone technology for the average consumer. Eventually, every corner of the globe, even the most remote regions of the planet, will have access to this technology.

This technology is much more reliable than traditional cell phones. Signals never get dropped as you constantly are within reach of the satellite's coverage. Eventually, I envision satellite phones and PC's to start merging their technologies even more than they currently are, just like cell phones are. Imagine having a satellite phone that has crystal clear reception and reliability along with the capability to access the internet anywhere on the planet.

Some of the leading players in this industry are Iridium, Inmarset, and Globalstar. They require an annual service fee that ranges from several hundred dollars to thousands of dollars, depending on how many minutes you get in your plan. Extras, like voicemail, data transfer, and fax capabilities cost extra. So does roaming. Your plans have a fixed rate within your calling plan, for example North America. Go to Europe, and roaming charges will apply, but hey, at least you have access.

These costs are usually out of the range of most consumers, though eventually these costs will lower as the technology becomes more widely used, as with any new technology. However, for the people that usually would require this kind of service, the costs are tax deductible which will help tremendously.

Another option is to consider renting. Most dealers usually have a plan that costs around $5 to $7 per day. This is considerably cheaper and an excellent alternative if you just plan on having the need for satellite coverage for a week or so.

David Dorrough is a retired educator, having taught at several leading universities. Today, he is active as a free lance writer. For more information on cell phones or satellite phones, please visit his website at http://www.cell-phones.consumers-choice.net

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Cellular vs Satellite Phones

Let us first study how the cellular network functions.

What is a cell?

A cell may be defined as a given geographical area that is within the range of a site or, zone or, base station, which contains all network communication equipments including a radio receiver and transmitter.

What is a cellular network?

A cellular network comprises of a number of hexagonal cells each having a local transmitter, which has the inbuilt capacity to cater to the communication needs of that particular cell.

There may be many cellular network companies offering cellular services. Each cellular Network has a Cellular Communication Exchange known as MTS0 - Mobile Telephone Switching Office. It has all the details of all cells and the subscribers listed together with handset numbers.

Cellular vs. Satellite phones.

· A satellite phone can be accessed from any part of the world, even from sea, or airplane, or a desert or a mountain.

· A cellular phone can only be used where there is such a service, cannot be used from areas where there is no coverage, or from sea, or from air or from other remote areas such as deserts or mountains.

· The quality of voice reproduction is always excellent, as the voice need not go through any cellular telephone exchange or Public Switched Telephone Network PSTN.

· There is always signal loss and voice interferences found in cell phone system. Also if you are located at the peripheral area (the so called fringe areas) of a cellular site, there is bound to be a weak voice reproduction.

· The coverage of cellular services is mostly limited to cities and bigger towns as it would be economically unviable to establish a cellular network if there are not enough subscribers.

· A cellular phone does not require a distinct geographical location, as it is independent of regions.

· Landline services cover not even 20% of earth’s landmass besides no coverage for all the areas of seas.

· Satellite phone gives dependable service. Emails, text etc, in addition to voice, is also possible.

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Tuesday, January 1, 2008

Companies that Offer Satellite Phones

In a world where there is no worthwhile landline connectivity or cellular services available in nearly 80% of the land mass, leave alone the oceans, the seas, the mountains, the forests and the deserts; you need a really efficient telephone service that works anywhere and everywhere! The answer is satellite phone! You can reach any area on earth with relative ease. Well, who are the people who offer such a breathtaking technology? Let us see:

(1)Iridium Satellite:

Voice and data solutions are offered by Iridium satellite practically to every nook and cranny of earth, inclusive of oceans, mountains, forests, deserts etc! They are, in essence, the only voice and data solutions provider of global magnitude. They have sixty-six Low Earth Orbiting (LEO) Satellites, cross-linked, covering the entire earth. They have services specifically for heavy industries and government customers. They also have a special data services with a 2.4 kbps throughput and direct Internet data services with a 10 kbps throughput. Their handset is very compact weighing less than 21bs, which enables easy mobility.

(2)Thuraya Satellite Phone:

Good handset, can reach remote areas. They, however, are concentrating more in the Middle East Region. Handset is compact. It is a Satellite – Cell Phone! Europe, Africa Middle East is covered.

(3)Inmarsat Mini M Satellite Phone:

It is designed as a laptop and therefore a bit bulky though it is sturdy. The drawback is that you cannot use it from a speeding vehicle; or, for that matter cannot access from Artic or Antarctic regions.

(4)Globalstar:

They have about 48 satellites orbiting the earth. Wide coverage, therefore, possible. They are the ones who offer the most cost effective services, which, of course, is possible because most of the time they access their cellular network. Satellite is used only when it has lost a signal. The coverage is not substantial.

Paul has been providing answers to lots of queries through his website on a wide variety of subjects ranging from satellite phones to acne. To learn more visit http://www.askaquery.com/Answers/qn1687.html

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