Signal splitter from television antenna. Equipment for digital television is something that can be bought in our store. The best characteristics of splitters depending on the number of connected TV

Hello!

In your question, you did not indicate the way to connect the group of TVs (four pieces) to one antenna. And this is very important, since the power of the received TV signal depends on this. There may be three options here. The simplest lies in the connection of the antenna cables coming from televisions to each other. but similar method Highly weakens the signal and can contribute to the appearance of interference in the form of a "grid" due to the mutual influence of TV devices on each other. Therefore, more often you can meet two other methods of connecting several television receivers to one antenna.

With the help of passive splitters

These are devices that are small boxes with input and output contacts for connecting TV and antenna. Below in the photo is such a device calculated just on 4 TVs.

Detail can be purchased in the store household appliances or electronics

But the use of these products is appropriate only with a sufficiently strong signal (for example, if you live near the TV / TV /) or when used cable television. This is due to the fact that when connecting two TV, the signal is weakened by 2 times, and three - in 3, etc. It is also worth remembering that the reason low quality Reception can be bad cables. Here you need to look at:

  • resistance (should be 75 ohms);
  • the attenuation of the signal (indicated in dB than the value is less, the better);
  • frequency range (enough to 1 kHz).

If normal cables, but the signal is excessively weak, it makes sense to use other devices that are described below.

Active splitters

There are two types of these products: with separate power and its feed over an antenna cable.

The second option was greatest distribution. What is his essence? Here the device is connected to several TVs, while the power of the active splitter is supplied from the voltage source, which can be installed next to one of the TV. In this case, the signal level on all television receivers will be the same and will be 1.1-1.3 from the input. In the photo below you can see that the antenna cable is connected directly to the power supply (BP): the signal is further distributed through the splitter.


Typical connection diagram

Power supply can be carried out separately from the antenna cable, as shown in the figure.

Selection of the connection scheme remains for the user

There is an important point: BP may be usual or adjustable. In the latter case, it is possible to configure the level of the resulting signal. The fact is that if it is excessively strong, it can lead to a distortion of the picture on the TV (such a situation is characteristic of antennas, which are not far from the repeater tower).

Currently, the family often has two or more TVs, each of which needs to be connected to the outerman.

In the presence of television antenna Collective use is the easiest way to make an order for connecting a second or third subscriber removal from a standard branching box installed on a staircase. This eliminates the mutual influence between the TVs, is ensured by good, the coordination of the input resistance television receiver With the feeder and the signal level at the television inputs does not decrease.

However, this requires a significant consumption of a coaxial cable. If, individual is used outdoor antenna, then the branching box is missing. However, a split box can be made independently.

Fig. 1. Branch boxes on resistors.

In fig. 1, and gives schematic scheme branching box for two taps from the subscriber cable of the collective antenna, A.Nes. 1, 6. - For three removal.

The box is installed, in a convenient location of the apartment, its entrance is connected to the already existing cable from a splitting box of a collective antenna, and the outputs are connected by television cables with TVs. One TV is connected to each output.

If for some reasons to one of the outputs, the TV will not be connected (for example, it was taken to the cottage or sent to the repair), to the plug intended for connecting to the antenna jack of the TV, you need to connect a resistor with a resistance of 75 ohms. Otherwise, mismatch will occur, and the images on the screens of other TVs will start bother. For the same reason, it should not be made in a box of excess taps, and if they are available, a 75 ohm resistor must be connected to each of them.

As can be seen from the scheme, the box for two exits contains three resistors, a box for three outputs is four resistors. The number of resistors will always be one more outputs. All resistors in the box have the same resistance, which depends on the number of outputs and is determined by the formula:

where n is the number of extends of a splitting box. The exact values \u200b\u200bof resistance resistors found in this formula should not be selected, you can take the nearest standard nominal value: 24 Ohm for two outputs, 36 ohms for three, 43 Ohm for four, etc.

The design of the splitting box is quite simple. The case of the box is performed from sheet copper, brass or even white tinge from tin can. Braids of all cables are soldered to the case of the box, and central veins - to resistors. Resistors can be the type of omlt with a power of 0.25 watts.

The box is closed with a lid made of the same metal, which at several points solder to the box of the box. After that, the box is attached to the wall.

The disadvantage of this method of branching the signal is to reduce the voltage of the signal at the input of each TV in the same time how many devices are connected to the box, due to the loss of signal energy in the box resistors. Usually collective use antennas ensure a completely sufficient level of the signal on the subscriber discharges of the staircase branching box of about 1 mV. Therefore, with a decrease in this voltage of the signal, a sufficient level remains several times to get a good image on the TV screen.

The question often arises: why do the resistors in the box, leading to a decrease in the signal level at its outputs. If, for example, the antenna jacks of three TVs were directly connected to the feeder, it would be strongly mismatched with the load: After all, the input resistance of each TV in the antenna input is 75 ohms, the input resistance of the three parallel connected - 25 Ohm or three times the resistance required for Fider coordination.

As a result, a significant part of the signal energy will be reflected back to the feeder and does not fall to the input of televisions. Moreover, with an inaccurate coordination of the feeder with the antenna, which is usually inevitable, the reflected signal will re-reflected from the antenna and will go to the inputs of TVs with a delay, which will lead to two and multi-component of the image. If there are resistors in the box it is easy to calculate that with any number of taps with TV connected to them, the feeder remains consistent with the load.

It happens that when using an individual antenna, a single TV connected to it works well, but when a branching box with two or three TVs is attached to it, the signal level on their inputs is already insufficient, the image contrast on the screens becomes weak and noise. In such conditions, it follows between antenna feeder and splitter

include box antenna amplifier. It should be reminded that in the case when the signal level is insufficient even. To work one TV, you need to use a more efficient antenna, and with a long feeder, the antenna amplifier must be installed on the mast near the antenna.

Fig. 2. Option of a splitting box.

Another option of a branching box similar to those used in the networks of collective use antennas are shown in Fig. 2. This box can be used to connect two TVs to an individual outdoor antenna.

The box of this type provides a feeder coordination with the load, regardless of whether the TVs are connected to both outputs, and also slightly loosens the signal at the outputs relative to the signal level at the box input. The box contains two identical coils of copper naked silver plated wire with a diameter of 1 mm.

The coils are wound on the mandrel "with a diameter of 4 mm and contain 3 turns. After winding, the coil is removed from the mandrel and stretched into a spiral with a step of 2 mm (the distance between the turns is equal to the wire diameter).

Nikitin V.A., Sokolov B.B., Shcherbakov V.B. - 100 and one design of the antennas.

In order to correctly select a splitter for a satellite antenna, you need to pay attention to the following aspects: the frequency of received channels, the number of signal reception points, high-quality and operational characteristics of the antenna cable.

The advantages of the satellite splitter consists in its ability to maintain a qualitative level of the incoming signal for several translators at the same time.

Splitter is especially relevant for residential apartment buildings, cottages, hotels, sports complexes, where the connection is carried out to two, three and more broadcast points at the same time.

Due to the small size, install splitters anywhere: in a niche of plasterboard, a metal panel box, a built-in wardrobe.

The satellite television includes the following devices:

  1. Satellite antenna;
  2. Tuner;
  3. Signal amplifier;
  4. Convector;
  5. Bulletshit;
  6. Coaxial cable;
  7. F-connector adapter.

Principle of satellite system

The antenna is established in accordance with the requirements of the operator and the manufacturer, as well as taking into account the satellite coating zone. All information can be found on the operator's website, in the "Satellites" tab.

In order to configure, you need to know the exact coordinates of the signal access point.

After setting up the satellite, an antenna mirror convector is fixed in such a way that the resulting signal is concentrated in the center. To connect the satellite antenna to the receiver, it is permissible to use only television cable with F-connector.

Optionally, you can install good threat. This device has a budget price, but it is capable of protecting equipment from powerful lightning and electromagnetic impact strikes. Ground protection is installed in the gap of the coaxial cable, closer to the receiving.

If the power grid on your site is weak, and you plan to install an extensive satellite system with a crab (hotel, school, hospital, etc.), it is better to purchase a voltage stabilizer with an external power supply.

How to choose a splitter

Before you purchase crab, you need to know the boundaries of the frequencies of all received channels. To do this, log in to the "Menu" of the TV and find the "Frequency Range" tab, then select the largest indicator. The antenna splitter must have a range of readable frequencies more than the TV operator declared.

Important! Splitter must be selected based on the number of transmission points. The number of outputs must correspond to the number of host devices. For example, 2 TVs must be purchased by a splitter consisting of two outputs, and 3 TVs are from three.

The device designed for 4 TVs will cost cheaper than one point of reception, so it makes sense to purchase a crab having a large number of plugs and connect to it as needed.

Each transmitting device has such a characteristic as a signal attenuation. The smaller the value in the decibels, the better the picture on the screen. You can see the indicators on the package or in the instructions.

Crab mount options for TV antenna

Place a bundle of splitters in the following ways:

  1. In the wall, wagging the highway. In this case, it is necessary in advance, at the stage of repair, we think about the arrangement of television and cable;
  2. Secure on the wall. This option Suitable if you install equipment in a non-residential room;
  3. Close the tape to the cable. The option is temporary and not particularly reliable, but is suitable if you are planning a global repairs in the future;
  4. In a plastic outdoor box. Splitter per one or two TVs, due to its small dimensions, can be fixed in the box. Installation is carried out very conveniently, it is also easy to replace such a system or repaired.

The difference between the splitter, the uniform, separator

When buying, pay attention to similar equipment:

  1. The splitter is a device by which the incoming signal from one point is evenly distributed into several TVs;
  2. The unifier - one, but qualitative; one, but high-quality;
  3. The separator is designed to separate the signal of different ranges for several subscribers. Of the disadvantages - shuffling and reduces output power Signal.

In order to make a signal more powerful, use the satellite system with an amplifier, which is installed at the input of the splitter. The more subscribers, the more powerful the amplifier should be.

Helpful information. Connecting an antenna cable to a TV of an old sample is carried out using a signal separator having two inputs: with a meter and decimeter range. At the same time, find out what television format is supported by your old TV.

Connection method

For a different type of cable, there are installation methods - with soldering or screw clamps.

If you do not have soldering experience, it is better to purchase a set of screw clamps for a cable of any diameter.

Choosing a small diameter of the cable, remember that only thread crab is suitable for it, and the mount is carried out with the help of screws.

The most convenient to operate is a crab with coaxial inputs / outputs, which can be connected using a television plug. If you have minimal soldering skills, then buy plugs with screws.

In order to choose a high-quality cable, you need to pay attention to its operational time. Also importantly take into account the resistance and indicators of the attenuation of the signal.

The wizard professionally engaged in the installation of satellite antennas, the eye will be able to determine the quality of the wires - they must have polyethylene or polyvinyl chloride external insulation, and more dear models - moisture protection filler. The cable translating on the DMW and microwave bands is equipped with a foil that protects the signal from electromagnetic effects and interference.

Consider the instructions, how to correctly select the cable:

  1. Take a sample of the cord and read the marking applied to the outer isolation. It is best to purchase a cable with copper central residential (copper steel). Copper is an excellent conductor and decent tolerate temperature differences;
  2. External isolation should be tough, but at the same time not to smoke on bending. If when twisting the cord you saw that the outer sheath is scattered, then this suggests that the cable is poor quality. Most likely, the outer shell is made of rubber, which over time turns into a duch;
  3. Evaluate the braid density under external insulation. The high screen density guarantees high-quality transmission not only images, but also sound. In the standard cable there are three or four types of different layers, each of which has its own functions: protective, transit, water-repellent, isolating, etc.;
  4. Before checking the level of attenuation of the signal, you need to know the final length of the cable and the frequency on which the channels work. Based on this data, you should select a cable. But the principle remains the same - the smaller the damage level, the better the channels are broadcast.

Additional Information. Each cable model has its own working resource at which all its operational properties are saved. If when checking technical characteristics The level of signal attenuation by 70% has emerged, it means that the service life of the cord has expired and it is time to replace it.

To date, the cords of the RG-6 brand are most in demand, they are distinguished by durability, durability and versatility. The old model PK-76 is so outdated that hardly supports digital TV standards.

How to connect crab

In order to get high-quality television, you need to correctly implement the satellite system.

The course of work can be divided into the following points:

  1. First of all, you need to choose a place to install and fastened the splitter, as well as the future location of the TV. For clarity, draw a scheme on paper;
  2. Next, you need to measure the distance from the installation point of the splitter to each TV. Consider corners, slopes, thresholds, etc. Mark on paper results, after which fold the distance to get total length cable. Push up and add a few extra cable meters;
  3. Go to shopping store: You will need splitter, plastic boxes (come different kinds Fasteners, for example, mounting brackets), plugs suitable for diameter to the cable, and the cable itself. The number of plugs should be equal to the number of TVs;
  4. Cut the cable of the required sizes and remove the outer insulating layer using the knife. After that, move the foil and move back, and then cut the circular movement to the winding of the central core;
  5. Clean the central rod from the garbage and put on the metal nut from the plug. Press it tightly to the end so that top part The plug fully entered the thread;
  6. Having received a monolithic design, you must stick the plug into the splitter and tighten to the end. Connect all cords and secure the crab;
  7. Connect the cable with access to the TV. After you have seen that there is a signal, tighten the television plug to the end.

Safety in the operation of electrical equipment

Before a long trip, you must perform the following fire actions:

  1. Disable the cable from the receiver, just driving the plug;
  2. Turn off the receiver;
  3. Disable a television cable.

In order to get a high-quality image, you do not need to have a lot of money, it is enough to purchase the equipment of the average price range for an acceptable cost. After time, you can buy "modules" individually or improve the system, for example, to purchase a memory card.

Kit, including satellite antenna, cable, operator sim card, costs about $ 100, but you will get high-quality satellite TV for many years. You can enjoy interactive TV, as well as study foreign languages \u200b\u200babsolutely free.

For those who live in the country, a variant with a simple antenna and inexpensive amplifier. A set of a simple antenna, cable and receiver will cost about $ 30, but this budget option is perfect for periodic viewing of the TV shows.

Video

For many families, it became familiar to have several TVs in the apartment. Delete the signal received from the television antenna to several TVs allows a device called a splitter of a television cable.

With it, you can watch several programs at the same time, while the quality of the signal remains at the proper level. Before buying such a device, we recommend to familiarize yourself with information from this article.

There are several types of devices, each of which is responsible for certain splitter capabilities.

Depending on the tasks set:

  • splitter;
  • diplexer;
  • answer.

It should be familiar with each of them in more detail.
Splitter, he is a television divider between multiple devices. By the way, the people call him television crab . Depending on the number of connectors, the splitter divides on 2, 3 and 4 TVs.

In the latter case, it is necessary to preserve an amplifier, otherwise the signal will be weak.
The diplexer has another more clear title - adder. In other words, the splitter combines several signals from different antennas and gives one more powerful.

It can be used in the house where there is satellite television And the usual television antenna. Also used to combine frequencies from different ranges.

Modern splitters in most cases are universal and can work both in the adder and divider.
Answerler for TV is used in apartment buildings. Part of the signal from the overall antenna goes to one of the apartments, and the other passes through the coupler further.

One of its varieties is the block. It is used to limit paid channels.

How much you connect tv

In any specialized store, the sales assistant will select a good antenna splitter for 2 devices.

A good level of signal on 3 TV will give a divider or an adder from well-known brands, so it is not worth saving on it.

In order to achieve good quality Images for a splitter on 4 TVs and more, an amplifier is needed (active splitter).

Depending on the number of connected monitors, the minimum required power changes.

How to choose a TV signal divider for 2 TVs

When choosing the equipment, first of all, you need to find out what frequencies the television channels are broadcast. You can get this information using a TV with a function of determining the frequency or apparatus that captures the signals of different ranges.

Also, it is necessary to consider the number of connected TVs and the diameter of the cross section of the antenna cable.

One of the important parameters is attenuation, which is expressed in decibels. It is possible to find its value on the housing. The less its value will, the better it will affect the quality when watching television programs.

Preference should be given to devices, in the design of which are provided by mounting holes. The device hanging on one only cable bets the TV signal worse than fixed on the wall.

If there is a cable wiring and box, a compact size splitter is used.
Depending on the type of cable, you should buy a splitter with a threaded connection or screw clamps. In stores there are devices designed to connect them with a cable using soldering.

They give a television signal better, but require special skills.

How to connect a television divider to tv

It is necessary to calculate how long the cable is needed. It is recommended to take a distance with a margin. Measurement should be taken from the place where the central wire ends.
If you need to combine signals from multiple antennas, you need to connect the antenna cables to the adolesters of the television signal. Then, through an adapter, you need to install a divider.

If the antenna is one, then only the last apparatus is used.

Installing a television crab

In places of connecting cables and a branching machine, fixation is carried out by special nuts that are included with a divider or adder.
For other ends of the cables you need to wear plugs. To do this, each wire must be cleared of insulation, so that the central cable wire spoke from it.

Then you can connect it to the TV. Turning it on, you must search for channels and check the quality of the resulting sound and the image for noise.

If the state is satisfactory or bad, then you need to install the amplifier. In century digital technologyMore often the question is how to connect the TVs to a computer or other device.

This will allow you to view photos, videos, site pages on a large television screen. Passing by the shelves with monitors in a computer store, you can see that the same video or image is played on all of them.

For this purpose, a HDMI splitter is used.
We will analyze how to connect an active splitter HDMI signal to 2 TVs.

This will require a device with two outputs (OUT). If it is necessary to connect more Monitors, you should purchase an HDMI splitter on 4, 8 or 16 outputs (OUT).

Connection is performed quite simple. From the computer or laptop HDMI cable you need to attach to the input (in), and connect the cables from the monitors to the outputs (OUT).

Antenna splitter with his own hands

Alone to make a splitter can each. But before proceeding with the development, it is important to know what the device is applicable to an antenna analog television.

For digital TV, such a divider or adder cannot be done.

Cheap Chinese devices have large loss of transmission quality, so it will be reasonable to finalize them. To do this, you will need a cable and a ferrite ring.

You can collect an antenna splitter in a small box of small size, while you should pay attention to the place of each connector.

In addition, a poor plug connection with the socket may affect the quality of the transmitted signal of the self-made splitter. Also, it is worth paying attention to the resistance of cables.

It will not be superfluous homemade device And cable insulation.

How to strengthen the signal

For a TV with a bad image and sound, an excellent solution will be the use of an amplifier. Thanks to him, you can significantly improve the quality of the transmitted image and sound.

It is necessary to establish it in close proximity to the splitter or antenna. When buying an amplifier, you should pay attention to the gain values \u200b\u200bin dB, an acceptable noise level, signal attenuation, the presence of a power supply.

Depending on the required ranges, amplifiers are used. different types. Not every frequency can be qualitatively caught using one or another amplifier.
Device Connection Scheme also affects the signal.

The following schemes are used:

  • with an amplifier before entering the splitter;
  • with several at each entrance;
  • combination.

The antenna amplifiers are meter and decimeter. A specific model is suitable for a specific situation. Therefore, before purchasing it is recommended to consult with the seller or master of television equipment.

The latter, has the necessary equipment, with which it is possible to accurately determine which the power of the antenna, divider or adder should be.
IN modern societyWhen in most apartments there are several TVs, do not do without a splitter. Each can independently connect the devices, but before that it is recommended to consult with a specialist.

When buying a splitter, you need to be attentive and explore its characteristics.

Two TVs in the apartment surprise someone now difficult. Technologies, and the signal reception devices themselves, in our rapid century are constantly developing, which inevitably affects the decline in prices for older models. And this, in turn, leads to the fact that the second TV, and the third, can afford almost every family. Agree, because it's still convenient when you can watch your favorite programs in the kitchen or in your room, without interfering with your family. And in this case, we will necessarily need an antenna splitter.

Active or passive: How to make a sure choice?

Do not even think about simply in parallel to connect a pair of wires to the antenna and thus get another source of the signal. The quality of the picture as a result of such an operation will be very bad - multi-component will appear, contrast will decrease, etc. Therefore, it is necessary to use an antenna splitter, or, as it is also called, "crab".

If the source of the signal is good, which can be determined visually, and before that in the house there was only one TV, it is quite suitable for the model collected on the basis of resistive divisors. Such an antenna splitter is considered passive and, although it provides good signal harmonization, still contributes to it a certain attenuation proportional to the amount of outputs. This type Well established in itself in the conditions of a major city or near the megapolis, where the broadcast power is quite high.

Accordingly, for bad reception Or a large number of receivers will be better to use an antenna splitter of active type. Such a device not only shares the incoming television signal, but also enhances its power.

When buying a splitter, pay attention to the attenuation level, which is indicated in the decibels both on the labeling of the device and in the concomitant instruction. The smaller the value of this indicator, the better. If you can see the frequencies of the received channels in the TV menu, then remember the most of them and check that it is included in the selected device.

How to connect an antenna splitter

All that will be needed to connect the second TV except the device itself is the mounting brackets (if the cable will be attached to the wall), a sharp knife, a common roulette and antenna plugs (by the number of additional TVs). First, I choose the place where an antenna splitter will be placed. It is best to use special sockets mounted on the wall of the room. Then, measure the number of meters from this point to each of the two TVs, we summarize, add a couple of meters to the stock and buy the desired length. Now it is necessary to cut it into the required pieces, with the ends of which the outer shell is removed, and the braid is bent out on the crude part.

After that, instead of a plug, which is located at the end of the old, the splitter for an antenna is connected, and to it - in advance prepared pieces of cables to all television receivers. Then all these wires are fixed motionless with the help of a bracket or cable channel of the plinth. The last thing remains to do is turn on all the instruments and check the quality of the received signal.