'Iridium' star system is a very large low-orbit satellite network word tablets recovered a total of 72 satellite phone network [66 satellites and six spare satellites in orbit at a distance of ground who run 780 km high orbit, 6 inclination constitute 86 Shu 4. The track surface high phone tablets of the word recycling, satellites in orbit around the Earth is the period of 100 minutes and 28 seconds. The quality of each satellite is about 700 kilograms, on each satellite has 48 emission points used to transmit mobile phone signals. Whole 'Iridium' star system and 'Iridium' star itself are by the company responsible for the design, the client's 'Iridium' star system handheld devices ('Iridium' satellite phone) is a company specializing in hand-held phone manufacturers and Kyocera of Japan ( Qiao. 3] provide it, 'silver' Star phone into only for Shu ... ⑴ !!! phone system single function machines and 03 'mobile networks / 1 "Shu of 0111 Composite mode two kinds. The latter can not only be used as satellite phone, but also used as a cellular wireless phone. Iridium 'star system will be through the entire' positioning satellite network called 'Iridium Iridium' satellite user when a 'Iridium' satellite subscriber calls another 'Iridium' Stars User ., then the signal will be 051 ^ 1 network is turned on for the user 03 ^ 1 channel [If the user is using a compatible 'Iridium' satellite phone through the ground inside if the called user is located in a ground 03 ^ / 1 system calls range Like the above scenario eight. And if you can not locate in the terrestrial telephone network, the signal will be directly between the satellite and satellite transmission, until transferred to the called 'Iridium' star system users 'Iridium' star calls. So as long as both sides call using the 'Iridium' satellite phone, regardless of cell phone users in the Antarctic or the Arctic word tablets recycling company, the second call will certainly be able to build original phone tablets of the word recovery, reflecting the 'Iridium' star power in terms of individual phone capability. The transmission medium is connected to mobile devices and between mobile devices provides the physical channel information transmission. is the actual carrier of information transmission. In essence, signal transmission cable phone and wireless handsets, are electromagnetic waves in different media The propagation process, in the process of decision on the use of the electromagnetic spectrum information transmission process from the cell phone at all. In theory, any signal frequencies can be used as a mobile phone, but in fact, we are still based on business requirements Factors propagation characteristics to selectively use electromagnetic spectrum. This chapter describes the twisted pair, coaxial cable, optical fiber, cable and other common cable transmission technology. Samsung w2014 word tablets recovered _ _ Obo Hainan word tablets recovered from Shenzhen Electronics City Aobo Electronic Technology Limited Shenzhen City Aobo Electronic Technology Co., Ltd. (www.aobodz.com) strong, credible, in other industries in Shenzhen, Guangdong has accumulated a large number of loyal customers. The company better work attitude and constant Perfection innovative ideas will lead Obo electronic and you work into the brilliant, for a better future!