General Overview Of Satelite Television
It is normally achieved by means of communication satellite orbiting along the orbit of the earth. The antenna used to capture the channels is usually a round or parabolic outdoor mirror.
Such TV tuners can also be in form of a card or a box that is normally attached to a personal computer by means of a cable. This enables the user to access all channels via their computer instead of using a TV set; this is mainly for convenience especially when one is busy using the computer.
The major advantage of this kind of receiver is that it can deliver many channels unlike ordinary terrestrial providers. It can also deliver these services to areas where other ordinary providers cannot reach.
This comes in two major categories; analog and digital TVs, they require analog receiver and digital receivers respectively. However, digital ones seems to be dominating the market of late thus replacing the analog TVs. This is because of the high definitions and quality pictures associated with the digital receivers.
The dishes used are relatively large in diameter, this result to much accuracy and also increases signal strength. They are always pointed or faced to a particular signal transmitter that transmits signals at a certain frequency range so as to be received by the dish tuned to the same frequency.
Transmission is however affected by several factors among them; rain since water is known to absorb microwaves at certain frequency; terrestrial interference, ice crystals especially in thunder clouds, and also sun rays whose effects are experienced twice a year.
Most satelite television users prefer using direct broadcast satellite provider; this is because the provider selects programs for the consumer and broadcast them as a package. The other usage method is TV receives only though it is not common.