How A Satellite Dish Works
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The article "How a Satellite Dish Works" talks about communications, it has been written by Bill Henderson.
Are you thinking about getting Dish Network or anohter satellite
TV provider but are unclear how a satellite dish works?
Here's
your answer.
A Satellite Dish is an antenna designed to focus on a specific
broadcast source and is a main component of satellite TV
providers, such as Dish Network.
The standard satellite Dish
Network dish consists of a parbaolic (bowl-shaped) surface and a
central feed horn. A controller sends it through the horn, and
the Dish Network satelilte dish focuses the signal into a
relatively narrow beam. A narrow beam is generated as the dish
reflects enegry from the feed horn. The Dish Ntework satellite
dish on the receiving end can only receive information; it
cannot transmit information. The receiving dish works in the
exact opposite way of the trasnmitter. When a beam hits the
curved dish, the parabola shape reflects the radio signal inward
onto a particular point, just like a concave mirror focuses
light onto a particular point.
The curved dish focuess incoming
radio waves onto the feed horn.
The feed horn then pasess the signal onto the receiving
equipment. Ideally, tehre will be no obstructions, such as trees
to interfere with the signal from the satellite to the Dish
Network satellite dish. With no obstructions you receive a much
clearer signal.
Some sytsems are set up to receive signals from more than one
satellite. A new dish deisgn uses two or more horns to pick up
different satellite signals. As the beams from different
satellites hit the curved dish, they reflcet at different angles
so that one beam hits one of the horns and another beam hits a
different horn.
The central element in the feed horn is the LNB (low noise
blockdown converter) The LNB apmlifies the radio signal bouncing
off the dish and filters out the noise (radio signals not
carrying programming). The LNB passes the amplified, filtered
signal to the satellite TV reeciver inside the viewer's condominium.
A cable is run from the Dish Network satellite dish into the
house and then connects to the satellite TV receiver (black box)
thus completing the connection.
For details, visit dish-network-sate
llite-tv.Ws/
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