Satellite dish: what it is, what it consists of, types, choice

The first and most important advantage of using satellite dishes is the ability to view a large number of channels in high quality in the most remote corners of the country. Also, the advantages of choosing a so-called dish antenna include the possibility of an extensive selection of different channels, but on-air or
cable television broadcast only what the majority of viewers watch.

What is a satellite dish and how does it work

A satellite television dish is a special device that is used to be able to receive signals that come from a satellite. Today, such devices are often found in everyday life, because with the help of a satellite dish you can watch television channels in any corner of the world. Everyone can buy a dish for
satellite TV at the present time, but the main thing here is to make the right choice of product, since they come in different types.

The principle of operation of a satellite dish and the device of an antenna for broadcasting satellite television

Receiving a signal from a satellite dish occurs in two stages. First, the TV signal is caught and focused at one point. In this case, it is necessary that it has a sufficiently large amplitude. Further, the signal begins to be amplified and processed. The TV plate consists of 2 main elements. These include
a converter and a deflector. The first serves to reflect and focus the radiation at a high frequency, and the second converts the wave signal into voltage fluctuations that are understandable for household appliances. Other components of satellite dishes for TV are auxiliary. Their list is indicated in the instruction manual.

offset plates

Offset type satellite dishes have an oval deflector. Such a reflector makes it possible, subject to certain criteria, to receive a signal from two or more sources. According to user reviews, we can say that the output wave of such a dish under the same conditions is lower than that of round models, because the reflective coating is smaller in an oval deflector. As a result, the flow of the received signal to the converter is also less.

Multifocal

Multi-focus satellite dishes receive a wave from several satellites. In such devices, more than one converter is mounted. The indicators are calculated individually. Sometimes they put a classic deflector and a group of resonant reflectors.

Mesh satellite dishes

These antennas look like curved grids, to which supports and a converter are attached. Such designs work on two principles at once, reflecting the signal and generating it due to the occurrence of resonance. In fact, these are transmitting and receiving satellite dishes in which the wave resonance effect is applied. Compact models are popular for amplifying the power of a wi-fi signal. There are also designs that consist of small portable antennas installed at the client and ground stations for receiving the signal. This is a T2 broadcast format.

How to choose the right satellite dish

The dimensions of the antennas receiving the signal from the satellite can be different. Broadcast operators offer users almost similar conditions. Some providers, such as, for example,
MTS , implement different antenna units in different areas.
According to the principle of operation of the system, it is clear what role the dimensions of satellite dishes play. The larger the reflective surface of the deflector, the more wave energy it collects and directs to the converter. Satellite broadcast channels are usually calculated according to average parameters. Thus, in the territory of optimal reception, the user can install a classic dish with a diameter of 60 cm. In regions where the signal is low, it is preferable to use an antenna with a deflector with a diameter of 90 cm or more.

Choosing an antenna for the Internet

After choosing a satellite Internet operator, you must select the appropriate “dish”. Actually, it’s easy. To do this, you do not need to know physics or formulas, and there is no need to calculate anything. Sellers will be able to choose a suitable antenna with a kit for satellite Internet.

Choosing an antenna for TV

If you want to buy a satellite dish for your TV, then you need to consider its size. This parameter is directly related to the gain of the device. The larger its size, the larger the gain parameter will be. In the event that the dish size is less than the one allowed for receiving the desired transponder, the message “no signal” will appear on the screen. The image will fall apart “into squares”, and the same will happen if the antenna is not properly tuned to the satellite. For different satellite signal reception power, different dish diameters are required (53 dbW – 0.6 m, 48 dbW – 0.8 m, 45 dbW – 1.0 m, 40 dbW – 1.5 m).

Which satellite dish is better to choose for the Internet and television

Offset antennas are most suitable for receiving satellite TV and the Internet. Offset plates are asymmetric cutouts from a paraboloid of revolution, in which there is an irradiator. The focus of this element is located lower than the geometric center of the antenna itself. This location removes the shadow from the useful surface of the antenna feed, as well as its support posts. This increases the useful operation index with an equal mirror area. The irradiator in such designs is located lower than the center of gravity of the plate. Thus, it increases the stability of the antenna in gusts of wind.

Choosing an antenna for giving

Antennas that receive a signal from a satellite, like their analog versions, are dependent on the wave that comes from ground towers. If it is weak, then the broadcast will be of poor quality. For this reason, you should consider the distance to the repeater and buy special amplifiers. Also, do not forget about the weather conditions. In order to avoid errors, the antenna for giving should be selected, taking into account the following rules:

• the design must operate in the received frequency range of 300 – 3000 MHz;
• the boom must be proportional to the distance to the ground tower;
• power indicators must be tuned to capture the wave;
• for an open or forest area, various products are bought.

Note! Choosing an antenna relative to the diameter of the deflector is quite simple. It is preferable to buy a product with the following grid dimensions: if the operator recommends 90 cm, the installed antenna of 1.2 meters will give excellent reception even in bad weather conditions.

How to hang and set up a satellite dish?

To
install a satellite dish at home, you will need the following tools:

• extension cord for 3 sockets;
• puncher or drill with a drill of the required diameter for fixing the bracket with anchors or with dowels;
• wrenches 13 mm and 10 mm in size (preferably two);
• Phillips screwdriver;
• a hammer;
• adhesive tape or plastic ties.

When you assemble the antenna, carefully tighten the bolts, also do not forget about the washers. You need to screw 2
multifeeds to the converter holder . One is screwed on the right side, the second – on the left along with the converter. It’s not worth pulling too hard. The same applies to the antenna mount itself.
A popular use of multifeed when installing a satellite dish for three satellites [/ caption] The bracket should be fixed on the wall. Next, you should hang the antenna so that it is directed to the south or southeast side. After that, you need to stretch the extension cord and connect the TV directly to the tuner or receiver. Everything, this is the end of the matter. In conclusion, we can say that the cost of satellite dishes is falling. Soon everyone will be able to afford such a “luxury” and watch many channels to choose from. From the client only one thing is required – to choose the right product.