A satellite phone or satphone is a phone that sends and receives calls with the use of satellites instead of landlines or cellular broadcasting sites. A satellite phones only needs a clear line of sight to the sky. The advantage of a satellite mobile phone is that it can totally complete calls from anywhere. A satellite phone can operate in the middle of the Sahara desert, at the peak of Mount Everest, or from a clearing deep within a South African forest. It is an essential tool for remote expiditions of all kinds, and gives solid communication on the seas and in the air.
A disadvantage of a satellite phone is visible delay in conversations. The reception must first travel to the satellite, then to an earthbound gateway before go to the recipient. The receiver's response will follow the same path in reverse, which takes time to reach the caller. Satellite minutes are also much more costly than cell phone minutes.
Nevertheless, these drawbacks are irrelevant when considering the features that a satellite phone serves. It can provide a link to civilization from places where no other link is available. It also permits loved ones to get in touch, as in the case of researchers, adventurers and those in the military service, and it can provide support communication in disasters if ever cellphone towers or landlines might not be working.
The three main satellite networks currently are Iridium, Globalstar and Thuraya. Iridium uses low orbiting satellites that minimize communications delays, but the more important is, it is the only latest satellite network that provides network globally. Competitor Globalstar covers about 80% of the earth's landmasses, excluding northern and southern polar earth regions, while Thuraya covers some parts of India, Asia, Africa, the entire Middle East and Europe.
For those who only wish to use a satellite phone on unusual occasions, you can rent rather than buy . Hiring charges start at about US$40 per week, but this doesn't include talk time, which may run as high as $1.75 per minute. If buying a satellite phone outright, an agreement is important with a satellite network, or prepaid cards may be purchased. Minutes are less expensive with an agreement than when hiring or buying prepaid, but are still expensive than cellphone minutes.
Satellite phones range costs according to network coverage areas. Iridium mobile phones are more expensive simply because they can make calls from anywhere in the world. One newest entry-level Iridium sat mobile phone sells for US$1,275, while other network phones start out at about half that price, and can be found for a lesser price. Because satellite mobile phones are so expensive, they are often purchased used.
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Iridium Communications Inc. unveiled its next-generation "Iridium 9602" satellite data transceiver in January at its annual Partners Conference in Phoenix, Ariz. The Iridium 9602 is a full-duplex short-burst data (SBD) transceiver designed for embedded applications in the rapidly growing market for remote asset tracking and monitoring solutions.
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It is light and so easy to use but do not let that fool you because the advanced features offered on this phone are nothing less than amazing.
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