Satellite phone systems are now getting popular because of the need for people to communicate even from the remote corner of the world. Communication is taking new strides of its own and mere cable connections and radio lines are not able to satisfy the growing need for wider coverage.
Satellite phone systems are now necessary, because the cable lines cannot be fixed to all the parts of the earth and the bandwidth of radio frequencies, which connected most of the parts on the surface of the earth, is exhausted. The satellite phone systems include Low Earth Orbiting (LEO) satellites. LEO satellites are preferred to geo stationary satellites because the latter introduces delay. This delay introduced by geo stationary satellite can vary with the distance at which it is placed. The least delay is about 0.5 seconds and this is a major disadvantage of geo stationary satellites so we go in for LEO satellites that have become a part and parcel of the satellite phone systems.
The system of satellite phones include not a single LEO satellite, but a constellation of LEO satellites, this is done because the LEO satellites are placed close to the earth and so they revolve faster than the earth making them invisible at times. So when one satellite is moving out of the horizon, another LEO satellite comes up close by to receive the calls.
The technology implemented by the satellite phones depends on the type of service providers like GlobalStar systems and Iridium systems. Satellite phone systems also include the various techniques used for the transmission of data, be it audio or video signals.
Some companies like the Iridium uses time division multiple access scheme to increase the number of calls that can be attended. It has satellite-to-satellite connections as a part of the phone systems thus handsets work directly with the satellites. Another satellite phones system, the GlobalStar implements new digital technology called code division multiple access and satellites for attending the traffic of calls.
In this system, satellites are used only as relay stations that is, they receive and forward calls to the gateways on the earth and the call reaches the public switched telephone network. Regardless of the technology used, the main aim of the satellite phone systems and service providers is to keep their customers in contact wherever they go.
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.
by: Jason Gluckman
Monday, August 10, 2009
Saturday, July 25, 2009
Satellite Telephones - Saving the World?
Satellite Phones.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.
This article may be reprinted in full so long as the resource box and the live links are included intact. All rights reserved. Copyright Satellite-Telephones
by: Nicola Kennedy
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.
This article may be reprinted in full so long as the resource box and the live links are included intact. All rights reserved. Copyright Satellite-Telephones
by: Nicola Kennedy
Thursday, July 23, 2009
Satellite Phones And The Future
Satellite telephones rely on
technology that was initially developed for military purposes. Like the
Internet, the use of this technology has witnessed a dramatic shift to
commercial use but the military implications were again reinforced during the US
conflicts in Afghanistan and Iraq. The Iridium system played a vital role in
providing the commanders in Washington with real time data that was crucial for
many victories. More than 20,000 troops were supplied with satellite phones for
exclusive use by the Pentagon and as permitted by the US DoD. This makes it
clear that the military is going to continue its dependence on satellite phone
technology as much as civilians are crazy about new services on their cell
phones. Another aspect of satellite phones is that local agencies like police,
firefighters, medical emergency teams, and similar services can now be in touch
with critical information on a real time basis.
Companies like Globalstar and
Iridium that have satellite constellations are sure to profit from this expected
boom in satellite phone usage. However, what is not clear right now is whether
the civilian and military satellite phone service providers will remain united,
as is the case with Iridium, or will they be specialized to separate the
commercial and military users. This decision is about ten years away when the
current satellite constellations will reach the end of their term. Another
factor to keep in mind is that though Iridium has a $200 million contract with
the Pentagon and hence a healthy user strength among government employees, it
has still survived only by applying for bankruptcy to get rid of the massive
debts that it has accumulated in building its 66-satellite constellation for
providing this service. Even Globalstar has had to go through bankruptcy and
lacking any contracts with any government agency, it is still trying to get out
of its financial troubles.
What this means is that the two
biggest providers of satellite phone services make investors worry whether this
business should be provided with further capital or not. The next generation of
satellites will have to be launched to keep the service going but so far, it is
not clear whether that will really happen. Besides this, there are problems with
receiving satellite phone signals while indoors or under a roof. Size is another
issue, where cell phones have been consistently shrinking in size; satellite
phones remain bulky and unfashionable to carry, making mass-market penetration
difficult. Finally there is the matter of price. Regular cell phone services are
so much cheaper than satellite phone services that only a very small percentage
of users actually opt for satellite phones.
If investors step back from
investing the next generation of satellites to continue providers like Iridium
and Globalstar then the military too might face problems because they would have
the phones but no satellite to serve as a signal gateway. This would leave the
US government in the tight spot of having to either buy a satellite
constellation or put up one of its own.
All that can be said at this
point that the military reliance on satellite phones is far greater than
civilian reliance and once again, like the original development was for military
use, the government will have to take some definite steps to avoid losing this
valuable means of communication.
Joseph Brochin writes about various communication technologies including satellite phones and satellite communications
technology that was initially developed for military purposes. Like the
Internet, the use of this technology has witnessed a dramatic shift to
commercial use but the military implications were again reinforced during the US
conflicts in Afghanistan and Iraq. The Iridium system played a vital role in
providing the commanders in Washington with real time data that was crucial for
many victories. More than 20,000 troops were supplied with satellite phones for
exclusive use by the Pentagon and as permitted by the US DoD. This makes it
clear that the military is going to continue its dependence on satellite phone
technology as much as civilians are crazy about new services on their cell
phones. Another aspect of satellite phones is that local agencies like police,
firefighters, medical emergency teams, and similar services can now be in touch
with critical information on a real time basis.
Companies like Globalstar and
Iridium that have satellite constellations are sure to profit from this expected
boom in satellite phone usage. However, what is not clear right now is whether
the civilian and military satellite phone service providers will remain united,
as is the case with Iridium, or will they be specialized to separate the
commercial and military users. This decision is about ten years away when the
current satellite constellations will reach the end of their term. Another
factor to keep in mind is that though Iridium has a $200 million contract with
the Pentagon and hence a healthy user strength among government employees, it
has still survived only by applying for bankruptcy to get rid of the massive
debts that it has accumulated in building its 66-satellite constellation for
providing this service. Even Globalstar has had to go through bankruptcy and
lacking any contracts with any government agency, it is still trying to get out
of its financial troubles.
What this means is that the two
biggest providers of satellite phone services make investors worry whether this
business should be provided with further capital or not. The next generation of
satellites will have to be launched to keep the service going but so far, it is
not clear whether that will really happen. Besides this, there are problems with
receiving satellite phone signals while indoors or under a roof. Size is another
issue, where cell phones have been consistently shrinking in size; satellite
phones remain bulky and unfashionable to carry, making mass-market penetration
difficult. Finally there is the matter of price. Regular cell phone services are
so much cheaper than satellite phone services that only a very small percentage
of users actually opt for satellite phones.
If investors step back from
investing the next generation of satellites to continue providers like Iridium
and Globalstar then the military too might face problems because they would have
the phones but no satellite to serve as a signal gateway. This would leave the
US government in the tight spot of having to either buy a satellite
constellation or put up one of its own.
All that can be said at this
point that the military reliance on satellite phones is far greater than
civilian reliance and once again, like the original development was for military
use, the government will have to take some definite steps to avoid losing this
valuable means of communication.
Joseph Brochin writes about various communication technologies including satellite phones and satellite communications
Sunday, July 19, 2009
Satellite Phone Systems
Satellite phone systems are now getting popular because of the need for people to communicate even from the remote corner of the world. Communication is taking new strides of its own and mere cable connections and radio lines are not able to satisfy the growing need for wider coverage.
Satellite phone systems are now necessary, because the cable lines cannot be fixed to all the parts of the earth and the bandwidth of radio frequencies, which connected most of the parts on the surface of the earth, is exhausted. The satellite phone systems include Low Earth Orbiting (LEO) satellites. LEO satellites are preferred to geo stationary satellites because the latter introduces delay. This delay introduced by geo stationary satellite can vary with the distance at which it is placed. The least delay is about 0.5 seconds and this is a major disadvantage of geo stationary satellites so we go in for LEO satellites that have become a part and parcel of the satellite phone systems.
The system of satellite phones include not a single LEO satellite, but a constellation of LEO satellites, this is done because the LEO satellites are placed close to the earth and so they revolve faster than the earth making them invisible at times. So when one satellite is moving out of the horizon, another LEO satellite comes up close by to receive the calls.
The technology implemented by the satellite phones depends on the type of service providers like GlobalStar systems and Iridium systems. Satellite phone systems also include the various techniques used for the transmission of data, be it audio or video signals.
Some companies like the Iridium uses time division multiple access scheme to increase the number of calls that can be attended. It has satellite-to-satellite connections as a part of the phone systems thus handsets work directly with the satellites. Another satellite phones system, the GlobalStar implements new digital technology called code division multiple access and satellites for attending the traffic of calls.
In this system, satellites are used only as relay stations that is, they receive and forward calls to the gateways on the earth and the call reaches the public switched telephone network. Regardless of the technology used, the main aim of the satellite phone systems and service providers is to keep their customers in contact wherever they go.
by:Jason Gluckman
Satellite phone systems are now necessary, because the cable lines cannot be fixed to all the parts of the earth and the bandwidth of radio frequencies, which connected most of the parts on the surface of the earth, is exhausted. The satellite phone systems include Low Earth Orbiting (LEO) satellites. LEO satellites are preferred to geo stationary satellites because the latter introduces delay. This delay introduced by geo stationary satellite can vary with the distance at which it is placed. The least delay is about 0.5 seconds and this is a major disadvantage of geo stationary satellites so we go in for LEO satellites that have become a part and parcel of the satellite phone systems.
The system of satellite phones include not a single LEO satellite, but a constellation of LEO satellites, this is done because the LEO satellites are placed close to the earth and so they revolve faster than the earth making them invisible at times. So when one satellite is moving out of the horizon, another LEO satellite comes up close by to receive the calls.
The technology implemented by the satellite phones depends on the type of service providers like GlobalStar systems and Iridium systems. Satellite phone systems also include the various techniques used for the transmission of data, be it audio or video signals.
Some companies like the Iridium uses time division multiple access scheme to increase the number of calls that can be attended. It has satellite-to-satellite connections as a part of the phone systems thus handsets work directly with the satellites. Another satellite phones system, the GlobalStar implements new digital technology called code division multiple access and satellites for attending the traffic of calls.
In this system, satellites are used only as relay stations that is, they receive and forward calls to the gateways on the earth and the call reaches the public switched telephone network. Regardless of the technology used, the main aim of the satellite phone systems and service providers is to keep their customers in contact wherever they go.
by:Jason Gluckman
Monday, July 13, 2009
Why A Satellite Phone May Be Right For You
What is the best way for you to communicate with others? Depending on what your needs are, it just might be a satellite phone. I had heard of satellite phones, but didn’t know what they were really good for. I found, though, that they can be the best way for you to communicate, especially in remote area where you may not be able to find mobile phone coverage. What is good is that with a satellite phone you can probably manage to stay connected no matter where in the world you might be at any given time.
In many ways, a satellite phone looks a lot like the old mobile phones from the 1980’s. They are large and have a big antenna that must be extended for use, which is because of the way the phones work. Satellite phones, unlike mobile phones, work by “talking” to satellites that are in orbit around the Earth. Most mobile phone cannot communicate from anywhere on Earth, a good satellite phone, though can do just that.
In the past, satellite phones were only for people who might find themselves in need of communication from a remote region somewhere in the world. However, due to technological advances, you will find that they are becoming more and more mainstream. In fact, you may seem satellite phones offered in smaller versions that look more like a cell phone very soon.
Not all satellite phones offer world wide coverage, but many of them do and more are becoming that way. This would allow you, if you had one, to stay connected no matter where you were. If you think you might really benefit from a satellite phone, it is best to check out the Internet to get one. The best in phone technology can be found on the internet. You will find better pricing plans there as well, so take some time and do a little research.
Satellite phones are not necessarily just for global adventurers anymore. They are becoming more mainstream as technology increases and price decreases. Plus, as our world becomes more and more connected more of us are in search of a way to communicate from anywhere. With the internet, you will be able to find the latest and greatest in satellite phone technology and the best price plans available so that you can communicate no matter where in the world you may find yourself. Think you might need to communicate from a remote location/ Then just maybe a satellite phone is the right communication tool for you.
If would like to find more of my personal articles on satellite phones, please feel free to visit my website on satellite phone guide!
In many ways, a satellite phone looks a lot like the old mobile phones from the 1980’s. They are large and have a big antenna that must be extended for use, which is because of the way the phones work. Satellite phones, unlike mobile phones, work by “talking” to satellites that are in orbit around the Earth. Most mobile phone cannot communicate from anywhere on Earth, a good satellite phone, though can do just that.
In the past, satellite phones were only for people who might find themselves in need of communication from a remote region somewhere in the world. However, due to technological advances, you will find that they are becoming more and more mainstream. In fact, you may seem satellite phones offered in smaller versions that look more like a cell phone very soon.
Not all satellite phones offer world wide coverage, but many of them do and more are becoming that way. This would allow you, if you had one, to stay connected no matter where you were. If you think you might really benefit from a satellite phone, it is best to check out the Internet to get one. The best in phone technology can be found on the internet. You will find better pricing plans there as well, so take some time and do a little research.
Satellite phones are not necessarily just for global adventurers anymore. They are becoming more mainstream as technology increases and price decreases. Plus, as our world becomes more and more connected more of us are in search of a way to communicate from anywhere. With the internet, you will be able to find the latest and greatest in satellite phone technology and the best price plans available so that you can communicate no matter where in the world you may find yourself. Think you might need to communicate from a remote location/ Then just maybe a satellite phone is the right communication tool for you.
If would like to find more of my personal articles on satellite phones, please feel free to visit my website on satellite phone guide!
Saturday, July 11, 2009
Satellite Telephone Basics
A satellite phone is a telephone that transmits and receives messages from orbiting satellites that provide coverage to the entire world or only specific regions.
The phones used for satellite communication are often larger in size than the ones that are used for terrestrial applications. These phones can be comparable to the cell phones that were used during the late 1980s and 1990s. These phones also have a large retractable antenna.
Satellite phones use Low Earth Orbit satellites for communication. These satellites orbit the earth at high speeds at low altitude. These satellites fly complete orbits and guarantee complete coverage over every area by at least one satellite at all times.
When a call is made with the satellite phone, the call signal goes up from the satellite phone hand set up to a satellite hundreds of miles in orbit. The signal then goes to one of the many satellites in the low earth orbit. The signal then goes down to one of the ground stations, from where the signal is finally delivered to the destination hand set.
To receive a good service the hand set will need at least 80% view of the sky. Obstructions such as buildings and trees can block the satellite signal from reaching your device. The strength of your calls depends on the user's view of the sky and the current position of the satellite.
The satellite phones use only orbiting satellites and not any cell towers for communication. Another interesting feature of satellite phones is that they work even during power outages. The only prerequisite is that the phone must have a charged battery for usage. Since these phones can work even during power outages, you can have uninterrupted communication even in the event of a total devastation. These phones can be used for voice and data communication even when all other forms of communication would be disrupted for weeks. In the event of an emergency, a satellite phone is a valuable asset and could mean the difference between life and death where communication is critical.
Although satellite phones are very huge nowadays, they will continue to grow smaller as technology advances. These phones fulfill many specialized roles and provide essential communications in several applications.
Robert Scheer is a freelance writer who specializes in travel to sacred places
The phones used for satellite communication are often larger in size than the ones that are used for terrestrial applications. These phones can be comparable to the cell phones that were used during the late 1980s and 1990s. These phones also have a large retractable antenna.
Satellite phones use Low Earth Orbit satellites for communication. These satellites orbit the earth at high speeds at low altitude. These satellites fly complete orbits and guarantee complete coverage over every area by at least one satellite at all times.
When a call is made with the satellite phone, the call signal goes up from the satellite phone hand set up to a satellite hundreds of miles in orbit. The signal then goes to one of the many satellites in the low earth orbit. The signal then goes down to one of the ground stations, from where the signal is finally delivered to the destination hand set.
To receive a good service the hand set will need at least 80% view of the sky. Obstructions such as buildings and trees can block the satellite signal from reaching your device. The strength of your calls depends on the user's view of the sky and the current position of the satellite.
The satellite phones use only orbiting satellites and not any cell towers for communication. Another interesting feature of satellite phones is that they work even during power outages. The only prerequisite is that the phone must have a charged battery for usage. Since these phones can work even during power outages, you can have uninterrupted communication even in the event of a total devastation. These phones can be used for voice and data communication even when all other forms of communication would be disrupted for weeks. In the event of an emergency, a satellite phone is a valuable asset and could mean the difference between life and death where communication is critical.
Although satellite phones are very huge nowadays, they will continue to grow smaller as technology advances. These phones fulfill many specialized roles and provide essential communications in several applications.
Robert Scheer is a freelance writer who specializes in travel to sacred places
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