Satellite systems right now offer both voice and data connectivity for some areas of the world where there is no cell phone coverage. Satellite handsets help us to stay in contact whenever in the air or out at sea. It also helps us to keep track and in contact with those brave adventurers who try the boundaries of longevity and ability. We could follow their routes, talk to them and receive photographs and film from wherever they may be and be more instantly ready to assist when things do not go according to plan.

How does it work then? The satellite phone transmits a signal, via an antenna to satellite orbiting in a network of satellites then to return to a land station and a standard land based phone network. Sounds good doesn't it? However, the path of coverage between the satellite telephone and also satellite need not be obstructed. Even bad weather can sometimes be a problem. Overall, coverage is much better outdoors yet if you're on a boat at sea or in a plane in the air then an outer antenna might be needed.

Satellite telephones are also a very high-priced method of communication; it's far more expensive than most calls from cellular phones. But, the technology will keep on to develop and when the usage becomes more widespread, you should see the costs fall hugely. At the time of writing call costs are seen to be very close with the cost of mobile phones with international roaming. To give the consumer market slightly of a boost and as a public relations exercise, the business is now in fund raising with a view to making satellite phones and free calls available to the US National Guard serving in Iraq.

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