Audible dot com is the leading provider of digital audio books and spoken word, with over one thousand titles to choose from. Audible lets you listen to your favorite books anywhere, anytime. Go to audible podcast dot com slash stuff brain to get a free audio book download of your choice when you sign up today. Welcome to brain Stuff from how stuff works dot com where smart happens. Him Marshall Brain
with today's question, how does satellite internet operate? Let's imagine that you live way out in the middle of nowhere, or you're working at a site that's completely disconnected from the rest of the world, say in the middle of a giant national park, or a desert or a massive forest or something like that. How do you access the Internet in a situation like this? There are no cell phone towers for hundreds of miles. There's no DSL lines
or cable access running along the street. Really, your only option is to look up in the sky and reach for a satellite. In fact, satellite internet access is really your only option. It's ideal for rural internet users who want broadband access, people camping in national forests, and anyone who's working in a jungle or a desert that's far from normal Internet access points. Satellite internet does not use telephone lines or cable systems, but instead uses a satellite
dish for two way upload and download data communications. Upload speed is about one tenth of the five kill a bit per second download speed. Cable and DSL have speeds that could be ten times or more higher than that, but if you've got nothing, five kill a bits per
second looks pretty good. There are several companies today offering satellite Internet access and you Usually the equipment consists of first a satellite dish approximately two ft by three ft second, two modems, one for up link and one for down link, and then some coaxial cables between the dishes and the modem,
and a cable that connects to your computer. The key installation planning requirement is a clear view to the south that means no trees getting in the way, since the orbiting satellites are usually tending to be over the equator area, and like satellite TV, trees and heavy rains can affect reception of the Internet signals. Two way satellite internet usually uses Internet Protocol multicasting technology, which means up to five thousand channels of communication can simultaneously be served by a
single satellite. I P multicasting sends data from one point the satellite to many points at the same time. By sending data in compressed format, compression reduces the size of the data and the bandwidth, allowing so many people to share that same connection. In some rural areas, there's also hybrid systems where the data comes down via satellite, but the up link is served with a normal dial up modem. This sometimes can reduce the cost and improve response times
for the connection. So if you're in a rural area or a truly remote area and you want broadband access to the Internet, satellite Internet maybe a good option. In fact, it may be your only option for more on this and thousands of other topics because it has staff works dot com. Audible dot com is the leading provider of digital audio books and spoken word, with over one titles to choose from. Audible lets you listen to your favorite
books anywhere, anytime. Go to audible podcast dot com slash stuff Brain to get a free audio book download of your choice when you sign up today.
