How does the umbrella of dish tv work? 99% people do not know the technology behind it

The main task of dish TV umbrella is to catch the signal coming from the satellite. The telecast of TV channels is first sent to the geostationary satellites present thousands of kilometers above the ground. These satellites revolve around the earth at the same speed that they always appear in one place. The dish antenna captures the microwave frequency coming from this satellite.

Have you noticed that the dish antenna is round and depth? This is called parabolic shape. The specialty of this shape is that it focuses the weak signals coming from far and wide at the same point. This point is called a focal point, and it is here that the LNB (low noise block converter) in the dish receives the signal.

LNB is the most important part of the dish. Its job is to catch the high-frequency waves coming from the satellite. Turn these signals into low noise and low frequency signals. Sending the changed signals to your set-top box through coexial cable.

They are still in the form of digital code when signals reach the set-top box. The set-top box decodes them and converts your TV into audio-video signals. That is, the umbrella of the dish + LNB + set-top box is the real reason for every picture and voice on TV.

You must have seen many times that TV signals disappear during rain or storm. The reason for this is that water drops and clouds absorb microwave signals. This weakens the signals coming from the satellite and the dish is not able to hold them properly.

Today, HD and 4K broadcasting in Dish TV are also possible through this technology. In the coming time and advanced satellites and IPTV (Internet Protocol TV) technology together will make it faster, stable and better. The umbrella of Dish TV is not just a round plate, but it is part of the state -of -the -art satellite communication system. Its parabolic design, LNB and set-top boxes together bring hundreds of channels to our TV.