Everything about satellite TV in detail. All about satellite television

Denisova Ksenia Sergeevna 103

Equipment prices have fallen, and digital broadcasting has replaced analogue technologies. High precision settings and excellent quality have become the determining factors. Satellite signal Excellent reception with a properly installed antenna. If the setup was done by a professional, then there will be no distortion or other interference.

If you have the time and desire, you can do without a specialist by installing the antenna yourself; this will save a considerable amount of money. The algorithm is simple; first you need to install a bracket with a satellite dish on the facade of the house. The next step is to pull the cable to the decoder. When everything is ready, all that remains is to connect the equipment to the TV and the network and scan. Let's take a closer look at the antennas themselves.

There are 2 types of satellite antennas most often found on sale. These are offset and direct focus. Offset antennas have many more advantages than direct-focus antennas, they have optimal characteristics for receiving signals, direct-focus antennas are the opposite - the main task is not receiving information, but transmitting data to a satellite - this type of antenna is suitable for satellite Internet, the diameter varies from half a meter to five meters.

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Next we will talk about receivers. There are three types of receivers, the first is the simplest; with such a device you can only watch unencrypted TV programs and nothing else. The second type has the Common Interface function; using a subscriber card, you can view encrypted channels and also record broadcasts. The third type is designated Common interface+; receivers of this type do not have a recording function. Paid channels The receiver can decrypt only if it has a Cl card installed, or if it has a C1 decoding module.

The receiver, decoder and card must be purchased from the supplier, otherwise problems may arise because the equipment is incompatible. By installing a subscriber card into the receiver, the receiver is able to decrypt encrypted channels. It is also worth noting that recently a signal has appeared that transmits information in HD high definition mode. Ordinary receivers cannot decode such a signal.

To view HD channels, you must purchase a receiver with HD capability. There are also provider versions of receivers that interact only with certain frequencies and are tuned to certain ranges. Most often, they cost less and lose almost all of their functions. The technical revolution, the transition from radio to digital signal, passed quickly, increasing the quality of our life. Now every resident of our country has the opportunity to watch television programs in good quality. Now you can watch television anywhere in our country.

In addition to broadcasting TV shows, you can receive Internet services. It is very pleasant that in our state they care about the quality of our life.

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We all understand perfectly well what terrestrial television is.

Each city has one large transmitting antenna, it is usually higher than all the buildings and on a special tower. From it, radio waves are received by our stationary antennas, connected by cable directly to televisions. Which, thanks to their equipment, decrypt the signal. This way we get a picture on our screen.

Satellite television works according to the same scheme, but there are significant differences.

First, a satellite is launched into geostationary orbit, which must always be in one place relative to the earth in order to transmit a signal to a certain area. I call its transmission beams that way, relative to the territory - European beam, Russian beam, Asian beam. The satellite broadcasts to the earth like a flashlight shining on a ball in the dark. Therefore, the signal from it is not the same everywhere and to receive it in different places you need a different antenna size.

Since the signal on the ground is very weak, they use it to strengthen it satellite dish or as it is also popularly called - satellite dish. Due to its geometry, such an antenna collects all the useful signal into one point - the focus, thus amplifying it.

A converter of the desired frequency range is placed at the focus, connected by a cable to the tuner. The most common KU, but there are also SI and KA. Now you can buy a universal KU converter everywhere, since the main broadcast is carried out in this range.