卫星电视是一种将电视节目直接从环绕地球运行的通信卫星中继到观众所在位置

Satellite TV is a service that relays TV programs directly from communication satellites orbiting the earth to the location of the viewer. The signal is received through an outdoor parabolic antenna (usually called a satellite antenna) and a low noise down converter. The satellite receiver then decodes the desired TV program to watch on the TV. The receiver can be an external set-top box or a built-in TV tuner. Satellite TV provides a wide range of channels and services. It is usually the only television in many remote geographic areas that does not have terrestrial or cable television services. <br>Modern systems use X-band (8-12 GHz) or Ku-band (12-18 GHz) frequencies to relay signals from communication satellites, requiring only a dish antenna with a diameter of less than one meter. The first satellite TV system was an obsolete type and is now called receiver-only TV. These systems receive weaker analog signals in the C band (4-8 GHz) from FSS satellites and require the use of large dish antennas of 2-3 meters. As a result, these systems are referred to as "large disk" systems, and are more expensive and less popular. <br>Early systems used analog signals, but modern systems used digital signals. As the spectrum efficiency of digital broadcasting has been greatly improved, high-definition television (modern television standard) can be transmitted. As of 2018, Brazil’s Star One C2 is the only remaining analog broadcasting satellite, while the United States has only one channel (C-SPAN) on AMC-11. These two satellite TVs are a service that relays TV programs directly from communication satellites orbiting the earth to the viewer's location. The signal is received through an outdoor parabolic antenna (usually called a satellite antenna and a low-noise shielded downconverter). Then, the satellite receiver decodes the desired TV program to watch on the TV. The receiver can be an external set-top box or a built-in TV tuner. Satellite TV provides various channels and services. In many remote areas where there is no terrestrial or cable service, TV is usually the only TV available.

Satellite television is a service that relays television programs directly from communications satellites orbiting the Earth to the location of the audience. Receive signals through outdoor parabolo antennas (often referred to as satellite antennas) and low noise defrence converters. The satellite receiver then decodes the required TV program to watch on the TV. The receiver can be an external set-top box or a built-in TV tuner. Satellite TV offers a wide range of channels and services. It is usually the only television in many remote geographical areas that does not have terrestrier or cable television services.<br>Modern systems relay signals from communications satellites at frequencies in the X-band (8-12 GHz) or Ku-band (12-18 GHz), requiring only disc antennas less than one meter in diameter. The first satellite TV system was an outdated type and is now called receiver-only television. These systems receive weaker analog signals in the C-band (4-8 GHz) from FSS satellites and require a large disc antenna of 2-3 meters. As a result, these systems are called "large-cap" systems and are more expensive and less popular.<br>Early systems used analog signals, but modern systems used digital signals, and because the spectrum efficiency of digital broadcasting was greatly improved, high-definition television (modern television standard) could be transmitted. As of 2018, Brazil's Star One C2 is the only remaining analog broadcast satellite, while the United States has only one channel (C-SPAN) on AMC-11. These two satellite televisions are a service that relays television programmes directly from communications satellites orbiting the Earth to the location of the viewer. Receive signals through an outdoor parabolo antenna(often referred to as a satellite antenna and a low noise shielded drive). The satellite receiver then decodes the required TV program to watch on the TV. The receiver can be an external set-top box or a built-in TV tuner. Satellite TV offers a variety of channels and services. Television is usually the only available in many remote areas where there is no ground or cable service.

Satellite TV is a kind of service that relay TV programs directly from the communication satellite around the earth to the audience's location. The signal is received by an outdoor parabolic antenna (usually called a satellite antenna) and a low noise down converter. The satellite receiver then decodes the required TV program to watch on the TV. The receiver can be an external set-top box or a built-in TV tuner. Satellite TV provides a wide range of channels and services. It is usually the only television in many remote geographic areas that does not have terrestrial or cable services.<br>Modern systems use X-band (8-12 GHz) or Ku band (12-18 GHz) frequencies to relay signals from communication satellites. Only a dish antenna less than one meter in diameter is needed. The first satellite television system was an obsolete type, now known as receiver only television. These systems receive weak analog signals in the C-band (4-8 GHz) from FSS satellites, and require the use of 2-3m large dish antennas. As a result, these systems are called "big cap" systems, and are more expensive and less popular.<br>The early system used analog signal, but the modern system used digital signal. Because the spectrum efficiency of digital broadcasting has been greatly improved, it can transmit high-definition TV (Modern TV standard). As of 2018, Brazil's star one C2 is the only remaining analog broadcasting satellite, while the United States has only one channel (C-SPAN) on amc-11. The two satellite TV is a kind of service that relays TV programs directly from the communication satellites around the earth to the viewer's location. The signal is received by an outdoor parabolic antenna (usually called a satellite antenna and a low noise shielded down converter). The satellite receiver then decodes the required TV program to watch on the TV. The receiver can be an external set-top box or a built-in TV tuner. Satellite TV provides a variety of channels and services. In many remote areas where there is no terrestrial or cable service, television is usually the only television available.<br>