Knowledge Is Key
For Intelligent Decisions

Satellite Logic is a leading,
authoritative source of information in
the Satellite Industry. Located in the
heart of the Silicon Valley, Satellite
Logic provides one of the most
valuable and comprehensive
knowledge bases on the Satellite
market! This is a primary Worldwide
information center which enables our
clients to analyze, evaluate, inquire
and select their best tailored
solutions. Our company sets the
industry standards for targeted
buying leads, reflecting a dramatic
advance over traditional marketing
solutions.


Satellite internet is the only option for those who wish to
access the internet without going through the hassle of dial-up.
It is also a good one for those who live in areas where cable
and DSL infrastructures are non-existent. Satellite internet is
the perfect solution for people who live in rural areas that want
broadband internet. Satellite internet works through the use of
a satellite dish designed for two-way communiaction (upload
and download). Download speeds reach a maximum of 500
kbps, while upload speeds are limited to a maximum of
50kbps. Although the download speeds of satellite internet
are not quite as fast as cable and DSL, Satellite internet is
around 10 times faster than an internet service through a
normal modem. The major players in the satellite internet
field are Pegasus Express, Tachvon, Teledesic, Tachyon
(available in the US, Western Europe and Mexico) and
StarBand.

Two way satellite internet consists of a two-foot by three-foot
dish, two modems (uplink and downlink, and coaxial cables
that link the satellite dish and modem. In order for a link to be
established to the orbiting satellites, the satellite dish much
have a clear view of the sky to the south.

With two-way internet, up to around 5000 channels of
communication can be handled by just one satellite.
Through the use of internet protocol multicasting, data is sent
from one point to another in compressed form. Compressing
the information allows for a significant reduction in the
bandwidth and size of the data. Multicasting of this
magnitude is impossible with all other land-based internet
services due to bandwidth limitations.

The key installation planning requirement is a clear view to the
south, since the orbiting satellites are over the equator area.
And, like satellite TV, trees and heavy rains can affect
reception of the Internet signals.

Two-way satellite Internet uses Internet Protocol (IP)
multicasting technology, which means up to 5,000 channels of
communication can simultaneously be served by a single
satellite. IP multicasting sends data from one point to many
points (at the same time) by sending data in compressed
format. Compression reduces the size of the data and the
bandwidth. Usual dial-up land-based terrestrial systems have
bandwidth limitations that prevent multicasting of this
magnitude.

Some satellite-Internet service still requires you to have a
dial-up or cable modem connection for the data you send to
the Internet. The satellite data downlink is just like the usual
terrestrial link, except the satellite transmits the data to your
computer via the same dish that would allow you to receive
a Pay-Per-View television program.


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