How does a Satellite TV work?
Satellite television signal, is first transmitted to the satellite with huge antenna located at an uplink satellite facility. The uplink satellite antennas (dishes) are aimed to the satellite in the Earth’s orbit. The uplink satellite dishes are very big (usually 25 to 45 feet in diameter), because this allows for accurate positioning and better/stronger signal. The satellite signal is sent to the satellite, which transponders send back the satellite signal to the Earth.
The satellite signal received on Earth by the end-users is usually very weak and is collected by a small parabolic receiving dish (antenna), which echoes the signal to the dish's focal point. The signal then is converted to a lower frequency and amplified. The satellite signal, then goes to a satellite receiver via coaxial cable and is converted to the L-band frequency range. At the end the receiver box converts the signal to a signal that can be used for standard television.