There are three satellite types, Geosynchronous Earth Orbit (GEO), Middle Earth Orbit (MEO), and Low Earth Orbit (LEO). All three satellite types are synchronous over the earth but the GEO stays in a specific place and travels at the same speed as the Earth. MEO travels at a slower speed and the LEO travels at a faster speed. All three satellites are used for satellite phones and gps. However GEO is good for 24 hour communication. While MEO & LEO hop from satellite to satellite to receive signal. These satellites are generated by solar power and sends information about the equipment status and can command the control station to perform operations. "Satellite radio technology can transmit its signals to either
a stationary receiver (at home, office, or in a car), a wireless mobile receiver,
or through the Internet on a 24-hours-a-day basis nationwide." In order for any of this to happen it has to go through the channel. The channel consists of the transponder that receives signals, amplifies them, sorts out the signals and send them to the correct receivers. "The interactive capabilities enable the satellite radio system to multitask (by performing different programming functions concurrently) and act as a multifunctional (to send, receive, store and retrieve signals and data) medium to deliver its multi-platform program content
(e.g., audio, text, graphic, video) in an on-demand and portable manner."
Lyn,Carolyn.April.1.2010 Satellite Radio Adoption Demand: Consumer Beliefs, Attitudes and Intentions. Journal Of Broadcasting and Electronic Media,266 http://uq5sd9vt7m.search.serialssolutions.com.libweb.lib.utsa.edu/directLink?&atitle=Satellite+radio+adoption+demand%3A+Consumer+beliefs%2C+attitudes+and+intentions.&author=Lin%2C+Carolyn+A.&issn=08838151&title=Journal+of+Broadcasting+%26+Electronic+Media&volume=54&issue=2&date=2010-04-01&spage=265&id=doi:10.1080%2F08838151003737964&sid=ProQ_ss&genre=article