TV Satellite Dish - The revolution of the satellite dish
Television broadcasting has gone far from the days when signals towards the TV was transmitted through land based television stations and received by aerials perched atop a TV. Today's advanced technology has changed the way that TV operates. While traditional ground based TV broadcasting still exists, nowadays, you can get TV programs from an outer space satellite.
In this type of TV broadcast, the signal is sent from the satellite and is then received through a TV satellite Dish. In this type of TV signal broadcasting, the TV satellite dish is an absolute necessity.
The TV satellite dish is typically a parabolic antenna type of radio wave receiver. A typical TV satellite dish is able to accept signals from a satellite and is also capable of sending signals towards that satellite. The TV satellite dish is optimized for accepting microwave signals which is how satellite television signals are sent. A TV satellite dish come in a number of sizes and designs, both of which is often dictated by the type of microwave signal they are made to cater to.
A TV satellite dish is well known for its distinctive parabolic shape. This parabolic shape of the TV satellite dish is a design necessity. This enables the signals from the satellite to be reflected off the parabolic shape and focused towards the TV satellite dish's focal point. This focal point is basically a waveguide positioned a s short distance away from the TV satellite dish's parabolic shape, facing the concave face.
The purpose of the waveguide is to gather the signals reflected from the parabola of the TV satellite dish. This signal is then sent to an LND or low-noise block converter which is responsible for converting the received signal so that it can be shown in the TV.
Formerly, TV satellite dishes had to be huge devices in order to be able to function properly. However, advances in communications technology served to trim down the size of the TV satellite dish so that, when before a satellite dish needed to be installed in the grounds, it can now be attached to the siding of the house or atop its roof. These modern TV satellite dishes often measure at a diameter of anywhere between 18 inches to 31 inches. This is usually for TV satellite dishes that use the Ku-Band electromagnetic wavelength.
Some TV satellite dishes are motorized so that they follow the path of the satellite automatically. These types of TV satellite dishes are slowly becoming rare and are popular among enthusiasts.
There have been a lot of misconceptions about the TV satellite dish. One common misconception is to think that the waveguide is the actual device which will receive the signal from the satellite. Actually, the signal sent by the satellite is primarily received by the parabolic dish. Due to its particular design, the parabola of the TV satellite dish concentrates the signal towards the waveguide.
There have been many interesting practices revolving around the TV satellite dish. One of the most entertaining and innovative is making the parabolic dish out of dustbin lids. Some even claim to get a higher signal from a TV satellite dish made of this type of material.