However, the Globalstar satellite phone system is not Phone Number List without limitations. It cannot be used like a common cellular phone in a building or in a vehicle. The inventors are now in search of a handheld phone that has no dead spots Phone Number List and works everywhere. Another requirement in present day circumstances is adding broadband data and multi media applications to seamless strata of wireless communication. However, that is Phone Number List in a distant future, while the current satellite phone service has to be used outdoors with at least 80% view of the sky or using an external antenna.
Use of satellite telephone different from each Phone Number List other Ordinarily you require the same type of satellite phones in entire group to communicate properly. There can be no use of two types of satellite phones in part. Otherwise the system of communication would be in a round about way. For example calling a Globalstar phone from Phone Number List an Iridium phone will sent the call to first the Iridium constellation and then to an Iridium gateway. Then it will go through a land line to the Globalstar gateway. Sometimes the required Phone Number List gateway gets disrupted and difficulties are experienced in communication. Globalstar has a constellation of 48 Low Earth Orbiting satellites.
It covers 120 countries and has the one of the Phone Number List best transmission quality. Iridium has a constellation of 66 Low Earth Orbiting satellites and a planetary coverage. The Inmarsat use portable terminals with Geo-stationary satellites. This set up is quite simple and user friendly. Satellite phones for emergencies In these days of hurricanes, terrorism, Phone Number List and power failure, everyone should be in readiness to address any unforeseen emergencies. The preparedness is most essential since the local phones have a tendency to die down just when needed most in an emergency.