TV amplifier for 2 TVs. Connecting one digital set-top box to two TVs. How long do we connect TV?

15.04.2020 Windows and disks

You can connect three TVs to one antenna different ways. For this, it is also recommended to use special set-top boxes that digitize an analog signal.

Necessary equipment and devices

What is needed to connect three TVs to one antenna?

  1. Antenna.
  2. TVs.
  3. Cable splitter for household use. Or, as it is simply called, CRAB. It has three outputs (which will be used to connect TVs), as well as one input - for connecting an antenna or other intermediate set-top boxes.

Choice of CRAB

First of all, it must be said that CRAB must also be chosen correctly. Thus, most modern cable operators use high-frequency channels (they are located in the UHF range). But not every splitter can connect to them independently. Therefore, you first need to find out what frequency range this device supports and buy the device depending on this.

Connection methods

Let's look at the most common way to connect 3 TVs.

We use the following order: antenna - splitter - TVs. First, the antenna itself is installed, then a splitter is installed near it (it is important that the cable is long enough for connection). Already from it you need to connect TVs using cables (antenna plugs are first installed on the cables).

Attention! There is no need to connect the plugs to the TVs yet, otherwise you may get an electric shock!

Connecting cables to CRAB

It is necessary to connect cables to the CRAB depending on what connectors its design provides.

  1. Cables can be connected using regular plugs.
  2. Cables can be soldered. For this purpose it is removed top cover KRAB, the central conductors of the cable and braids are soldered to special contact pads.
  3. If the CRAB is German, the connection occurs through a screw socket. This means that in this case the nut is first put on the cable, then the connection is made and only now the nut is tightened.

Other connection options

There are several more ways to connect 3 TVs to one antenna.

  1. If you want to connect an analogue to digital channel converter in parallel, to do this you need to connect two TVs according to the standard circuit, and connect another splitter to the third connector of the CRAB. One TV and a converter (which also connects to one of the TVs) will already be connected to it. Read our article about how to connect a second TV.
  2. If you want the digital signal to go to only one TV, you need to use a set-top box with a built-in RF modulator. The set-top box is connected to the antenna, to which there is a splitter for all TVs. A digital signal will be supplied to one TV via a set-top box using HDMI.

Of course, such a task will require an additional design, namely a splitter or a special digital signal divider. This is a special device intended for these purposes.

Cable or antenna splitter for 2 TVs

A splitter is a device consisting of a set of resistances that are designed to match, to be precise, the wave reactance of the antenna feeders and several television receivers at once. The splitter provides a stable connection, and it also guarantees a transmitted signal with the least attenuation. Today you can buy a television divider for two televisions (2TV), or even for three (3TV).


An antenna splitter for 2 TVs can be purchased at any specialized store.

The design of the splitter itself, which is popularly called a crab, is enclosed in a durable brass or silumin housing. It is not afraid of corrosion, and is lighter than stainless steel. On the outside you can see the connections of F-plugs, for the antenna on one side, two or three on the other - for TVs. The circuitry of the splitter is quite simple, most often a transformer one. Typically one turn of wire is threaded through rings or ferrite tubes. The case itself is closed with a lid, which is fixed with very strong glue or sealed for tightness.

How to make the connection: antenna splitter for 3 TVs

When you use a splitter with 3 outputs (popularly called a tee), then 3 TVs need to be connected to it. That is, there should be no free exit. If there is one, then you need to connect a ballast resistor (75 Ohm) to the two occupied outputs. This must be done to ensure active operation of the splitter.

You can consider the connection using the example of two TVs to one antenna, acting on the principle “from simple to complex.” Of course, when connected, the devices are disconnected from the network. And they will only connect when both TVs are connected to the cable.

Buy a special coaxial cable with a length of at least 12 m, as well as a splitter with two outputs;


When the antenna is connected to both TVs, you need to check whether you are satisfied with the picture quality. If there are any distortions, you need to check the connections; you may need to redo the cable crimp. Usually graphic diagram puts everything in its place: it shows how to connect two TVs at once, and how to connect three.

Amplifier antennas: how to connect a second TV to cable TV

An active antenna is one that has an amplifier that needs power. If such an amplifier is used, the supply voltage to it should not be interrupted. Then the connection diagram will be slightly different. The divider in it is ordinary, but the task is this: power needs to be supplied to the antenna, only this is done at the cable gap between the antenna itself and the divider.

You will need a special element with a needle and thread on one side, and this connector is screwed into the input of the divider. The other side of this connector will be the antenna socket; connect the power supply separator there. It turns out that the antenna is provided with power even with a conventional divider.

Signal boosting: how to connect multiple TVs to cable TV

How many posts on thematic forums are devoted to the same topic - two TVs are connected to one antenna, and this affects the image quality. What's the matter? There is nothing surprising, since the splitter only divides the signal. To ensure clear image quality, use a special television amplifier. It is designed almost like a crab adapter, only with resistors and a microcircuit.


The cable splitter is inexpensive, so everyone can afford it

How else can you get rid of interference:

  • You can put special ferrite rings on the connection cable - this is done on the non-visible part of the cable, next to the antenna input connection to the TV;
  • Similar noise cutters are found on the laptop adapter wire - this is a cylinder-like device on the cord, next to the plug where the cord connects to the computer;
  • Well, remember that the quality of the signal depends on the antenna itself - therefore it is very important to choose the right antenna.

When choosing a splitter in a store, ask your consultant about the frequency range it allows. Otherwise, when installing on three TVs at once, problems with the signal may arise. When installing on three TVs, it is necessary to install an amplifier.

Today, fortunately, there are many similar devices in stores that allow you to install cable TV in literally every room. If there are two of them, then it’s two, or even more! Then the family will not quarrel among themselves about who should watch what. You can simply, relatively speaking, divide the TV into TVs - mom watches a cooking show, daughter watches a channel with Polish music, and dad watches sports competitions.

As you can see, there is nothing complicated. You buy a splitter, insert everything according to the instructions, and check the signal. Even a technology novice can handle this.

Tricolor TV has become so widespread among Russian residents that it can be compared to dishes or an iron, since these items are necessary for humanity every day. The system has a number of advantages: high quality and protection from interference - this is the motto of Tricolor TV. Even schoolchildren know that to receive satellite digital television this is the best variant.

Residents have no questions about the quality of the system, but everyone wants to expand the potential and improve the quality of the signal depicting pictures on the device screen. A small part of the Russian population has old television receivers, while others have modernized analogues.

One receiver - two TVs

The latest Tricolor kits allow you to connect more than one TV to one antenna. However, there are several cases to consider:

  • Two TVs can watch the same channels;
  • And in the case of different programs, you need financial expenses, but there is a possibility of implementation.

Watching the same channels on two devices requires a signal divider and a long cable. If the receiver has a multi-output function, then there is no need for a divider.

Implement one device using HDMI, and the second through the antenna connector. It is important to consider the functions of the second TV; it may not provide these requirements. You can watch different channels on two units only if you purchase a new client and a second receiver. It will now include two tuners and LNB connections. It will act as a server and its client as a receiver on the resulting local network.

You can also organize communication thanks to wireless network, that is, a router and Wi-Fi. TVs will become independent from each other, as they will have remote controls remote control. However, there is one thing - high cost. Here you need to think about how simple it is - choose two sets or one with the ability to connect to two or more devices.

Receiver GS E501/GS C591 on multiple devices

For the connection process to be successful, you should configure an antenna that has a converter with a pair of outputs. The coaxial cable allows you to mount the GS E501 (server) connectors with the converter together. The equipment set usually includes twisted pair cable. In case of absence, pinout is done manually.

Then the SIM card is inserted into the card reader accordingly. All actions are performed exclusively on a de-energized device. The setup is as follows:



Thanks to Tricolor TV, residents of Russia will be able to watch different programs on several units simultaneously, using only one Tricolor MultiStart card.

Very often, a second TV appears in one family. In this case, there is only one antenna. The question arises: how to connect two TVs to one antenna? There are ways to use one antenna on two or more TVs.

What you need

To connect, you will need several parts:

  • two-output splitter (splitter). This is a device that allows you to divide the signal from the antenna into two or more streams. It has an input on one side and two or more outputs on the other - for connecting television receivers.

  • 5 connectors corresponding to the splitter;
  • 2 adapter plugs;

  • antenna cable.

Important: When purchasing a splitter, do not confuse the number of outputs! A three-way (three-output) splitter is used to connect three receivers, but not two! If you still have a three-output one at hand, you can solve the problem by connecting a ballast resistor (resistance 75 Ohms) to the free output. And if there is a plan in the future to install and connect several TVs to this antenna, then it is better to immediately buy a splitter with several outputs and temporarily drown out the empty outputs with the same resistance.

Work progress

We will try to talk about the connection in such a way that even someone who does not understand radio engineering at all can cope with the task. This is done step by step like this:

  • Selecting details. The first thing you need to do is buy a splitter. They come in a variety of varieties, including those that require soldering and those that do not. If you know how to solder, then it is better to take those that involve soldering. This connection is always more reliable than any other, it produces less signal loss and preserves its quality.

If you do not have soldering skills, then you need to choose an appropriate splitter, as well as one suitable for a specific type of cable. A win-win option would be a splitter with built-in sockets for coaxial cables.

Having chosen a splitter, select the appropriate connectors. F-connectors are now very popular due to the fact that they are reliable and easy to install.

  • Choosing a location for the splitter. It is optimal to position the device so that the antenna cable can easily reach it and, if possible, have the shortest distance to both TVs.
  • Cutting the existing antenna cable. It is necessary to cut so that the cable can freely reach the splitter. The old plug is cut off along with a piece of cable.
  • Cable stripping and installationF– connector.

For those who know how to solder, there is no point in telling them how to cut a cable and solder it to a splitter - they know it themselves. What follows is written for the average user who is not familiar with the radio business.

So, we cut the cut end of the wire, as shown in the figure: we strip the edge, wrap the braid. The middle core insulator should protrude slightly, and the middle core itself should protrude by at least 5 mm. The tool for removing insulation from a coaxial cable at home is an ordinary kitchen knife.

Important: The cable must be standard; DG 113 or SAT 703B are more often used. Under no circumstances should the cable braid be connected to the central core, otherwise the signal will not pass through at all.

Install the F-connector. It is also called wrap-on because the connector is wound onto a soft wire. The connector for connecting the cable and splitter is ready.

  • Cut two pieces of wire with the expectation that the length would be enough for each TV.
  • We mountF- connectors similarly for connecting TV cables and splitter outputs. We do the same at the other ends of the cables.

As a result, we use all five connectors, including:

  1. one from the antenna, to enter the splitter;
  2. two televisions, for exiting from it;
  3. two televisions free.
  • We connect the connectors to the splitter.

  • We connect two free connectors with adapters. An adapter is a device with an F-connector attached at one end and a coaxial plug at the other for connecting to television receivers. Typically this device is generally referred to as a plug.
  • We turn on the television receivers. Let's check how both receivers work. If everything is done correctly, the image should be normal. Now you can easily enjoy an excellent picture on two receivers at once, without interfering with each other.

Using the diagram below you can see the path along which you need to connect 2 TVs to one antenna:

How to install an antenna with an amplifier

But what if after connecting the splitter the image quality deteriorates? This may mean that the antenna on two TVs does not provide the required signal, while the separating device also takes over some of its share. The solution can be an antenna with an amplifier, it is also called a Polish one. Such an antenna for two TV receivers connected to the device will improve the signal quality in both TVs. To do this you need:

  1. In an existing circuit with a splitter put awayF- connector from the entrance to it.
  2. In his place connect the plug to the power supply from the antenna kit with amplifier.
  3. At the entrance install an adapter with an antenna socket(the so-called “mother”) and insert the plug from the antenna with an amplifier there.

This should improve the signal quality.

Splitter with amplifier

There is a second option - look for a splitter with a built-in signal amplifier. This method is good when the TV initially showed well and a new antenna is not required. However, before purchasing a new device, discuss your specific case with a specialist.

Amplifiers, including those on the antenna, have different gains, and too much signal is just as bad as a weak one, and can also cause distortion. The telemaster will measure the signal level and give advice on purchasing an amplifier.

By the way, the problem with signal attenuation can even arise if you connect several TVs to one antenna. The more receivers, the more the signal attenuates. Therefore, when planning to connect several television receivers, weigh all the pros and cons.

Below are video instructions for connecting an antenna to two television receivers:

In contact with

A family dinner while watching the evening news broadcast - such a picture can be seen in almost every kitchen window of an apartment building. It is no longer a luxury to have a TV in the kitchen. Watching your favorite TV series and talk shows can brighten up the routine kitchen chores of every housewife. Progress has confidently crossed the threshold of every home and apartment, and now instead of a black-and-white large-scale TV, in many houses you can see a flat TV panel on the wall in every room.

Every owner of a second, or even a third TV, naturally faced the question of how to connect two TVs to one antenna? If this circumstance puzzles you, then read this article. It contains the solution to this simple problem.

Some useful information

Firstly, this is the power of the television signal that comes from the antenna. Its level can be checked using a signal meter or assessed using the level indication in the menu on the TV screen (Fig. 1).

But it would be nice to know at what frequency you can receive Current Package(multiplex) in your region. When tuning your TV manually, you must find the desired frequency (channel) and position the antenna in such a way as to receive the best signal. Make sure that the achieved signal level is high enough to obtain acceptable broadcast quality after dividing it into two TV receivers.

Cable length and number of cable connections

Perhaps not everyone knows, but the length of the cable wiring can affect the quality of the “picture” on your TV. If the signal path from the antenna to the television receiver is no more than 20 - 30 m, then you probably won’t notice anything. But each subsequent meter of cable causes a drop in signal strength. This parameter is measured as attenuation per meter of length. So plan your cable runs wisely, even if you don't skimp on cables.

And those who were “greedy” and assembled a cable from fragments, and even more so saved on special sealed adapters, should understand that this will not have the best effect on the final result. Like water flowing through a leaky pipeline, the TV signal will be lost, attenuated with each twist, and noise may appear on the screen. Avoid unnecessary turns of cable in your home and take care of its integrity.

Signal dividers

In order not to install your own antenna for each TV, they come to the rescue (Fig. 2). They have other names, depending on their characteristics, which can also often be heard: . What are we dealing with? The hint in the name itself is a telecommunications element through which you can distribute a signal received by one antenna to several television receivers or, simply, divide it.

It is good because it does not require a power source. But, dividing into two streams in a passive mode, the TV signal in a certain way weakens by almost half, and if the divider has three outputs, then three times, etc. This circumstance is almost not noticeable in large cities with high TV broadcast power, but if your antenna is located at a considerable distance from the repeater or you use a long cable, then you should install an active type splitter.

Active divider

This electronic device works without signal loss and even amplifies it, thanks to the built-in transistor amplifier, which has a positive effect on its function:

  • active divider output connectors provide undistorted voltage;
  • he has low level own noise;
  • there is no cross signal distortion;
  • The device has a wide dynamic range.

The active type CRAB must be powered from a stabilized source of electricity. The current consumption of the splitter - about 60 mA - can be provided from a power outlet nearby or via a high-frequency cable.

How to connect two TVs to one antenna cable

It all starts with choosing the place where you want to split the signal in two. This is the place where you should cut the cable that ran from your antenna to your existing TV and where it is convenient to install the divider. This is especially true for an active splitter (remember that it needs to be powered by something).

Let's say that you've already bought an additional cable and that's it. necessary tools already at your fingertips (divider, mounting brackets, knife, tape measure and two antenna connectors for the first and second TVs). You should install the antenna plug that you had on the end of the antenna cable that will go into the divider. This is done using a knife; you will use it to remove excess cable insulation. Make sure that the outer cable braid does not touch the central core anywhere. After the divider is connected to the antenna cable, you can begin to distribute the signal.

Using a tape measure, measure the distance from the divider to each TV and cut two pieces of cable to the appropriate length. Install antenna connectors at the ends of the cable. Connect the cable to the divider outputs. You should have a parallel connection. You will use the principle of parallel signal distribution if one day you want to connect several TVs in your home at once.

Carefully secure the cable using compact fasteners along the baseboard or lay it in a cable channel so that no one in the household trips over it and damages the wiring. Check what you got. The ideal result is equal, stable broadcast quality on the screens of both TVs.

Connecting three or more TVs

As already mentioned, the circuit for connecting TVs to the divider is parallel. It would be worth noting that each subsequent TV included in this circuit reduces the reception quality to a certain extent. If installing a separate antenna is still not part of your plans, but you want to connect three TVs (Fig. 6), then the same three-output divider will help you out. True, it will be much more effective to install an active splitter with three or more outputs, depending on the number of receivers.

Before purchasing a splitter, do not forget to check for which frequency range your splitter is suitable. The connection algorithm is identical to the scheme with two TVs, but there are also variations. For example, if you want to connect an analogue to digital signal converter (DVB-T2) in parallel, then connect two TVs according to the classical scheme, and insert another CRAB into the remaining third output of the divider. You can connect a third TV and decoder to it, or use the loop output on the set-top box (not all set-top boxes have a loop output).