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center>Types of Satellite TV Systems – TVRO and
DBS
By Gary Davis
Dish-Network-Satellite-TV.ws
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Satellite TV. In the USA there are 2 types of satellite TV
systems. The first is TVRO which stands for TeleVision Receive
Only. The second is DBS which stands for Direct Broadcast
Satellite. TVRO – TeleVision Receive
Only TVRO was the first satellite system available
for home viewing of satellite
TV. It required a relatively big dish of 3 to 6 feet in
diameter and worked in C-Band. Frequencies of around 4 G Hertz
are called C-Band and require bigger dishes because the wave
length of these frequencies is longer than in Ku-Band which
requires a much smaller dish of about 18 inches. Ku-Band is at
12 to 14 G Hertz. TVRO systems also need a movable dish
because it needs to get all the channels of many satellites.
C-Band satellites have much less channels available than Ku-Band
satellites and therefore more satellites are needed to provide
enough channels. Possibilities that exist with TVRO systems is
that you can also receive free channels and independent feeds
from for instance news companies. You could for instance receive
the unedited material that is broadcasted from a news crew
somewhere in the coverage area of the satellite. They transmit
their materials to their headquarters using a C-Band satellite.
Many of these types of feeds are not scrambled and are available
to everyone with the proper equipment. TVRO systems are
often referred to as Big Dish TV, C-Band Satellite TV and BUD
(Big Ugly Dish). DBS - Direct Broadcast
Satellite Satellite TV via DBS is done in the
Ku-Band. These satellites work on higher frequencies and can
transmit higher power signals. This means that much smaller
dishes can be used to receive the signal. A small dish of 18
inches is already enough to receive all satellite TV by
Satellite TV. This makes it possible to have satellite TV from
an apartment on the 10th floor, if you have a clear line of
sight to the south. DBS is for everyone. The satellite
dish is so small that it is not an obstacle like with for
instance the TVRO dishes of 3 to 6 feet. Once installed the dish
needs no maintenance since it is aimed at just one satellite.
Some dishes actually have 2 or more feeds which makes it
possible to receive the signals from more than 1 satellite.
There are no free channels available on DBS satellites as these
are often owned and used by the satellite TV provider it self,
while TVRO satellites often are used by those who rent space on
the satellite for a limited time. TVRO systems are meant for,
for instance, transport of unedited materials between
continents, but also within one continent. DBS is meant for
everyone with a simple, low cost installation of the system.
Often the installation is for free as it really is very easy to
do. The only thing that is needed is a bit of knowledge of where
to find the satellite and the tools that make this even easier.
A qualified installer will find the satellite and point it to
maximum reception within minutes.
About the author:
Gary Davis is owner of Dish Network
Satellite TV, has several years experience in the Satellite
TV Industry and has written several articles on satellite TV.
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