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SATELLITE
PHONE
Whether
you're posting a breaking news story from the mountains of
Afghanistan or just staying in touch with the office during a
Caribbean cruise, satellite phones can be the only choice when
you absolutely, positively need a phone in the far reaches of
the world. Satellite phones can be expensive, though
Iridium's $1.50 USD charge is sometimes equaled or surpassed by
international mobile roaming rates for some GSM carriers. However,
only recently have they achieved acceptable speeds for data
transmission.
Since
there needs to be a clear line of sight between the antenna and
satellite, performance can also be affected by poor weather and
use is generally restricted to outdoors (though they will
sometimes work through glass or canvas). This can also
limit the ability to receive incoming calls, though for
applications on boats and other places an external antenna can
greatly enhance their use.
Above excerpt taken from kropla.com.
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