Antenna cable for TV. Antenna coaxial cable for TV

Even in the age of digital technology and the total penetration of the Internet into all spheres of life, many apartments receive a television signal via cable. An incorrect attitude towards its installation can have a very negative impact on the quality of the received signal, even if you choose the most modern and expensive material. In this article we will tell you how to connect a television cable in different ways, we will give recommendations to beginners.

Features of cable routing

The television cable “comes” into the apartment from the floor panel and is routed through the television receivers available in the house. To correctly install a TV cable throughout your apartment, you should follow some recommendations.

The main elements of a TV cable in stripped and completely exposed form

To avoid signal interference, it is recommended to place the cable away from the electrical wiring. Telephone wire or Internet cable do not interfere with the normal passage of the TV signal, and therefore the general installation of these communications in one cable channel is allowed. If it is impossible to avoid placing an electrical cable together with a television cable, then you should purchase a TV cable with a core diameter of over 1 mm with a double protective screen.

Throughout the apartment, the cable should be pulled in one piece, avoiding any connections or twists that affect the quality of the picture. Crossing cables with electrical networks is not recommended, but if this cannot be avoided, then the intersection should be arranged strictly at an angle of 90°. Read also the article: → "".

Cable routing across rooms to ensure shielding and high quality contacts is carried out using factory-made splitters. Self-made devices are unlikely to be able to provide acceptable signal quality. You should also exclude the connection TV cable with sharp bends or in a bay - the quality of the picture on the screen can suffer greatly from this.

It is better to lay the section of the line going from the floor box to the apartment in a widened cable channel, taking into account possible inclusion alarm or additional telephone line. To facilitate maintenance, splitters should be placed in areas with easy access.

How to choose the right cable

Even the most modern television receiver and cable plugs are unable to produce an acceptable image if the cable is of insufficient quality. High-frequency TV signal currents flow somewhat differently than home electrical currents. The higher the frequency of the current, the closer to the edges of the main wire it flows, therefore, in cables used in the military or space industry, in order to avoid a critical reduction in the quality of the television signal, they are treated with a silver or gold compound.

Selecting a cable to connect

When selecting material, you must adhere to the following recommendations:

• all markings must be present on the outer shell;
• the resistance value of the product should be 75 Ohms, because all television receivers are designed for this value;
• the outer diameter must be more than or less than 6 mm;
• The main core and shielding braid must be made of copper.

In the latter case, manufacturers often sin by trying to reduce the cost of products as much as possible by making the central core from steel and simply covering it with copper plating, making braiding from copper alloys, and shielding from foil. Read also the article: → "".

Marking of television cables

Let's look at the marking using the example of the Chinese RG 6U television cable, the most common in our country.

How to connect a cable to a plug

You can connect the plug to the cable on our own, especially since the TV signal voltage is too low to cause any harm to health. Even an unplugged cable can be cut without fear of electric shock. A short-circuit between the braid and the main conductor also does not cause any harm. For different sizes Cables come in a variety of plugs, so when choosing a cable, you need to pay attention to its diameter. The most commonly used are F-plugs.

First you need to cut the cable, which can be done in two ways:

• with braid bend;
• without inversion.

The most reliable method is considered to be cutting with a twist, but if it is not possible to install the plug, then the second method is used. The cable is cut with a scalpel or a sharp knife: the outer sheath is carefully cut to length without damaging the screen. Once the cut is complete, the insulation is folded back and removed.

The copper braid and shielding foil are wrapped. In general, three types of shielding can be used in TV cables:

• aluminum foil;
• copper braid;
• aluminum foil with copper braid.

Aluminum foil for strengthening purposes inside often covered with polyethylene. It is unlikely that it will be possible to clean the film without damaging the foil, so to improve the contact of the screw-on plug with the foil, the bent part of it is slightly wrapped back so that the uninsulated piece of foil faces outward. If the cable diameter is too small, the end entering the plug is wrapped with electrical tape.

The insulation from the main core is removed in a manner familiar to many, similar to removing insulation from electrical wires, without damaging the core itself. Then the plug is screwed onto the foil, and the excess main core is bitten off with wire cutters or cut off with a knife, leaving a length of approximately 3 mm on the outside.

Connecting the cable to the antenna

Connecting the TV cable to the antenna must be carried out in compliance with the rules for switching electrical appliances, guided by the diagrams available in the technical data sheet of the TV. To complete the work you will need:

• splitter;
• antenna cable;
• antenna amplifier;
• wire cutters;
• sharpened knife or scalpel;
• soldering iron

An antenna amplifier is used when the signal is not strong enough or too weak. The splitter is useful for connecting several TVs to one antenna at once. Read also the article: → "".

The cable is connected directly to the TV antenna using screw terminals

The cable, splitter and amplifier must be installed next to the separated cable. In an individual house best place The attic is used to accommodate all appliances. The end of the cable coming from the antenna is connected to the amplifier through a special terminal. From the amplifier the signal goes to a splitter, to which the television receivers in the house are connected. When connecting to a satellite dish, you will need to use a receiver to which a cable is connected via the antenna connector. Preparing the cable is similar to cutting it before connecting it to the plug.

Tip #1. Before connecting the TV, you must carefully check all the connections of the switching devices and the reliability of the plugs in the appropriate sockets. If the image is noisy or the signal is too weak, you should adjust the antenna amplifier.

Connecting to a splitter

Nowadays, no one can be surprised by the presence of a TV in every room. A small problem is supplying a TV signal to all receivers, since in most cases there is only one signal source. The solution to this problem is to use an antenna splitter. The picture quality when connecting TV receivers through a splitter may deteriorate somewhat, but the connection process itself is not difficult and is completed in just a few minutes.

The connection diagram can be presented step by step as follows:

• choosing a location for the splitter and securing it there;
• removing plugs from used connectors;
• cutting and connecting TV cable.

Connecting the cable in the panel

When laying or connecting the cable, it is not allowed to twist it into knots and coils, bends or sharp bends, which sharply worsen the quality of the received television signal.

Tip No. 2: The section of cable that goes first from the panel to the apartment should be placed in a wide cable channel.

In the case when the cable connection in a staircase box must be performed by soldering, the length of unshielded sections should be minimized, since their presence and length directly affects the quality of the signal and image. After soldering is completed, it is recommended to cover each contact under a layer of varnish - it can prevent the occurrence of pockets of corrosion damage and the ingress of dust particles between the contacts. Dust adhering between the contacts causes signal deterioration when air humidity increases: the image reproduced by an analog TV will become very snowy, and when transmitted digital signal the image will simply disintegrate into pixels with an unpleasant squeaking sound.

Frequently Asked Questions

Question No. 1. Is the F-plug suitable for digital TV signal transmission, or only for analogue?

Despite the fact that this type of plug has been used for quite a long time, both its connector and characteristics allow you to fully enjoy not only analog (by the way, broadcasting will cease forever in the near future) television, but also digital and satellite television signals.

Question No. 2. What to do and what to do if the diameter of the cable is slightly smaller than the diameter of the internal thread of the plug? After all, in this case, reliable compression will not work.

Question No. 3. When installing the plug into the corresponding socket, the TV cannot be placed close to the wall. What is the way out of this situation?

In this case, you should use an angled plug, which can be purchased at almost any store that sells electrical household appliances.

Question No. 4. In old Soviet-made TVs, the cable was connected to the plug by soldering. How to connect to it modern type cable?

If the signal quality deteriorates or the cable needs to be replaced due to poor contact, the plug and cable can be connected, as before, by soldering.

Question No. 5. How can I connect to an antenna or network? cable television several TVs at once?

To connect several television receivers, you can use a special device - a splitter, also called a “divider” or “splitter”.

Typical connection errors

• Not everyone knows that some manufacturers coat the inside of the cable with polyethylene, which cannot be cleaned even with a scalpel. Plastic, even with the best cable stripping, will prevent the creation of high-quality contact with the plug. To avoid signal distortion, it is recommended to wrap part of the turned-off foil in reverse side so that the conductive side is on the outside.
• A typical mistake is getting the thinnest braided wires onto the main core of the cable when crimping it. This may result in poor quality or intermittent signal dropouts. A common mistake when installing and laying cables is placing them in the same baseboard as the electrical wiring. This cannot be done, otherwise the interference created can significantly spoil the mood when watching TV shows.

For quality television broadcasting What is important is not only the sufficient power of the incoming signal, but also the quality of the antenna wire. A high-quality television cable will ensure the transmission of a powerful signal without loss. It is necessary to choose the right wire for your TV to ensure that you receive a strong enough TV signal to enjoy your favorite TV programs without interference.
Almost any antenna wire has a special marking. Here you can find basic information about the product.

Almost all television wires have the same design. The basis is the internal conductor (central core), which is covered with an insulating layer. A shielding layer in the form of a braid is located on top of the insulation. The structure is protected by a hard shell of insulation.
Cables with this structure are called coaxial.

The high frequency current of the television signal flows through the central core. The higher the frequency of the signal, the closer to the surface it will flow. This means that when high frequencies The current loss for cables of different cross-sections will be the same. To reduce these losses in space technologies A gold surface layer is used to prevent signal loss.
For home use copper or steel conductors are used. To reduce signal attenuation, the steel core of the cable is coated with a thin layer of copper. A coaxial cable with a steel core is cheaper, but is unable to transmit a signal from satellite dish without big losses.
A copper vein can easily transmit a television signal of any nature, including a signal from a satellite dish.

A shielding layer or braid protects the cable from external electromagnetic interference. The quality of the TV signal directly depends on the strength of the interference.
The material for making the shielding layer is aluminum foil. The braid is made of thin copper or aluminum wire.

For a shielded wire, a value called the shielding coefficient is determined, which describes the degree of protection of the cable.

The inner insulating shell protects the inner conductor from damage and also insulates from contact with the shield. It is made of plastic. PTFE is used in especially high-quality wires.

The outer protective shell protects the structure from mechanical damage, dust, moisture, and other external influences. It is made from polyvinyl chloride, polyethylene, or other insulating materials.

Cable selection

When choosing a cable, you must follow some recommendations:

• Mandatory characteristic impedance television wire - 75 Ohm. Cables with a different characteristic impedance do not match the TV tuner and, as a result, cannot transmit high-quality images.
• Choose coaxial cable with a diameter of at least 6mm. Thinner cables are flimsy and can be easily damaged.
• The shielding coefficient of a high-quality shielded wire is at least 60 dB. To achieve the best degree of protection, it is better to choose a cable with a coefficient of at least 90dB.
• Study the cable carefully. If the product has an unpleasant odor or is missing markings, then this is most likely a fake.µ
• Try bending the cable. It should be easily deformed, but “wrinkles” should not appear on it. If they appear, then you do not have the highest quality cable in your hands.

We present to your attention some brands and models of coaxial cables:

It is recommended to buy DG 13 television cables - they are durable, reliable, and have many other advantages. If you are not able to buy such an expensive TV wire, then you can choose a cheaper option from the list.

For an overview of coaxial cables, see the video below:

Compound

After purchasing a suitable cable, you need to connect it to your TV.
This stage is no less important than the choice of wire, since even the most expensive and high-quality product will not transmit good signal if the connection is made incorrectly.
Plug installation
It is recommended to buy plugs from the same store where you buy the cables. Ask the seller to help you select the appropriate components.
The most common type of plug is the F-plug. It is designed to transmit both analogue and digital television signals.

Connecting the plug to the antenna wire is very simple:

1. Using a stationery knife, make a circular cut of the top protective layer up to the screen shell, a couple of centimeters long;
2. After removing the outer shell, carefully bend the shield or braid back. Fold part of the foil again so that not the inner, but the outer part of it contacts the plug;
3. Remove the insulating sheath of the center wire;
4. Place the plug on the cable and twist it clockwise until it stops;
5. Cut off any excess wire.

Plug installation is complete.

It’s also useful to watch the video on how to connect TV plug to coaxial cable:

Sometimes the quality of the TV signal suddenly decreases. In such cases, it is necessary to identify the causes of signal deterioration and eliminate them.

• If the cable is damaged, you first need to find the break point.
  Next, divide the cable into 2 parts and perform the same operation with each part as when putting on the plug. Buy special attachments that fit onto the cable and connect the damaged parts.
• You can extend the cable in the same way. It is recommended to use a cable of the same brand and model for extension.
• Signal quality may also decrease due to sharp turns of the television wire.
  Do not bend the cable sharply 90 degrees. Be sure to bend the cable within a certain radius.

Be sure to watch the video on how to connect a television cable:

Connecting multiple TVs

To connect several devices to one antenna at once, splitters are used, which are otherwise called “crabs”.

How to connect multiple TVs to one antenna via a video splitter:

Crabs are recommended for use in areas with strong television signals, i.e. close to TV towers, since when a crab is connected, the signal strength decreases sharply. For example, if you connect 2 TVs to one antenna, the signal loss will be about 30%.
The number of outputs on the crab must strictly equal the number of connected devices. If there is a free exit on the crab, the signal quality will still drop.

Amplifiers

To amplify the television signal, special devices are used - amplifiers.
The device should be close to the TV or antenna.
Most often, amplifiers are used to compensate for signal loss due to the use of crabs.

Connecting the TV to the antenna via a video amplifier:

As you can see, choosing and installing a good television wire for an antenna requires taking into account many nuances. But it's worth it, because making the right choice TV cable - broadcasting will proceed without interference. We hope that the article on television cables will help you make the right choice.

Buyers often complain about weak signal television in bad weather conditions. This may be due to poor quality TV cable. Vendors often assemble equipment from products that are no different high quality. This reduces the cost of equipment, and sellers can make a larger markup.

In order not to fall for tricks, you need to know which wire to choose. This is exactly what we will talk about in our article.

Types of cables

There are four types:

TV cable, which is better?

We'll sort it out the most common option television wire - coaxial. It is produced under different brands. But, they all have a wave impedance of 75 Ohms. Using such a television cable, you can connect several televisions. So, what brands are there:

• RG-6 cable. Produced under the Russian brand. Made in China. It has a copper or steel central core, the thickness of which is 1 mm. The central vein is in a shell made of polyethylene foam. The device itself consists of a screen made of foil, copper or aluminum braiding and a protective shell made of PVC. The thickness of the entire wire is 6–6.8 mm. This brand is used to connect digital, cable or regular television. The price for such a cable is low, only 10 rubles per meter. You can buy it in the online store.
• Cable PK-75. This brand is similar to the previous one. Produced in our country. Copper central core, the thickness of which is 1 mm. Screen made of copper or double aluminum lavsan and tinned copper. The cable has a single shield. Most often used for cable television. If there is a double screen, then you can connect satellite TV inside the building.
• RG-5 cable. This brand of cable is distinguished by its thickness, which is 0.58 mm. Outer diameter – 6 mm. The cable is designed to transmit any type of signal. Satellite television also transmits. Provided that the distance is no more than 190 m. Due to its thinness, the cable cannot pick up a signal at a distance of more than 190 m. The picture will be of poor quality, and the signal is weak.
• Worth noting: Model RG-5 and other similar options are used for the same device. Due to its thin structure, it breaks frequently. It is the most difficult to attach to sockets and connectors.

Foreign television wires

Let us highlight several options that are produced outside our country:

The coaxial version has many brands that differ not only in characteristics, but also in price.

How to choose the best TV cable

When choosing a cable for your TV, you need to decide which signal you need to catch. That is, what kind of television will be:

• Digital.
• Essential.

If you select a device for terrestrial television, then the digital one will work with interference or will not work at all. In this case need to pay attention for the following features:

So, we looked at which TV cable to choose. In order for the cable to work well, it is necessary to choose it correctly. You can select a cable for cable television according to the following criteria: 6.5 mm cross-section, with two screens and a well-known brand. You can buy the device in the online store.

In principle, it is not important for a person who is not strong in physics or electricians to know the features of a particular cable; it is better to entrust the choice to a professional. But this is if the matter is related to electricity. You can choose a television cable yourself.

The main thing is to understand that the cable from the TV to the antenna does not conduct current, so you can replace it yourself. But before starting work, you need to figure out how to choose the right antenna wire.

How does a television cable work?

In the store it is called "Coaxial". Inside he has:

• central vein;
• dielectric;
• outer conductor;
• shell.

This type of electrical cable is always round and is used for signal transmission. Due to its design, this type is used not only for connecting a TV, but in communication systems, connecting home and military equipment.

In special stores, a good and suitable wire for TV is marked:

• RG-6;
• RG-59;
• RG-11;
• RK-75.75.

IN latest marking the number 75 means characteristic impedance in Ohms. The greater the resistance, the less interference, however, there is no point in choosing an electrical wire larger than 75, but you should not take less either.

The signal attenuation indicator is as follows important characteristic, which is measured in dB/100m. Each TV channel broadcasts at its own frequency and the attenuation rate is also different. A good electrical cable should have a low rating.

When choosing, you should pay attention to the following indicators:

• type of television system;
• length from antenna to TV;
• places where the cable passes;
• presence of corners and turns;
• wiring selection;
• number of TVs.

Now let's talk about everything in order.

Video: “coaxial” for TV

How to choose the right one

First of all, you need to immediately think about where the entire system will go. If the antenna is located outside the house, and the wire will run along the street, then you need to choose one that is resistant to temperature changes and moisture. This depends on the density of the cable braid, its diameter, special impregnations and carbon layer. The thicker it is, the thicker the core (and the signal attenuation rate depends on this) and the more resistant it is to climatic and mechanical damage. If the antenna is located on a window or balcony, then there is no need to take the largest one - a cable with an outer diameter of 6–7 mm will be enough.

The wires for satellite and cable television are different. That is, in terms of structure they are completely identical - core, insulation, outer conductor and shell. Only now satellite signal Together with the power supply of the convectors, it passes through the conductor (most often copper), and the cable conductor passes along the surface of the conductor. Therefore, wires with a thin core (less than 1 mm in diameter) are not capable of transmitting a satellite signal without interference.

It is possible to mount the antenna wire next to the power wire only if their outer diameter is 6–10 mm and the protection against interference is enhanced. Thick electrical cables can be bent at an angle of no more than 90°.

You can summarize all of the above with one statement - the thicker the television wire, the better.

The dense braiding of the cable is an indicator of its durability. It should not come off easily; it cannot be scratched, for example, with a fingernail. However, too hard insulation will not allow the antenna wire to bend.

Today, foil or aluminum film is used as an external conductor. The absence of this usually indicates that the product in front of you is not of the best quality.

A good antenna wire usually consists of a copper core. There is no evidence that this particular material is better suited than other alloys. But, if you have a choice, it is better to buy an antenna cable with a copper core.

The color of the shell, despite the opinion prevailing in narrow circles, does not indicate anything. The wire can be any color - whatever you like. Manufacturers use special colors to distinguish television from power if they are mounted side by side.

You can find out the “composition” of an electrical cable by asking the seller to make a cut, so it is better to avoid packaged goods, even if everything is written on the packaging. Good option- copper core with a cross-section of 1 mm, dense insulation, a layer of foil and tin copper braiding and a dense sheath.

The length of the electrical cable is a purely individual matter. Before purchasing, you need to calculate not the minimum distance from the antenna to the TV, but take into account all the indentations along the bottom of the wall and turns. It is also necessary to take the antenna cable “with a reserve” in case in the future you want to move the TV to another location.

Cable components include connectors, adapters and splitters. It is better to choose them in the same place where the wire is purchased, so that the seller can help you select parts that are suitable in diameter. Also for satellite cables It is better to purchase corner adapters so as not to bend them.

Video: choosing a TV cable

Antenna connection

To connect the cable to the antenna or TV, you need to attach the plug.

First you need to do circular cut shells at a distance of one and a half centimeters from the edge. You only need to remove the shell without touching the hairs of the screen. The screen hairs and foil are folded back to expose the inner insulation layer. You need to bend it carefully so as not to tear or tear anything out. The layer of internal insulation is cut in a circle and removed. The distance between the bare core and the folded foil must be at least 2 mm.

Next, you need to screw the plug on, rotating it clockwise until it stops. Cut off the rest of the excess strand. Prepare the antenna wire on the other side in the same way. This must be done after it has been laid from the antenna to the TV, in order to shorten it if necessary.

The main thing is to choose good wire, which will meet all the parameters.

Video: preparing an antenna wire for satellite television

Video: connecting the wire to the antenna

Video: how to crimp and connect a TV cable

A necessary attribute of a modern apartment is not only electrical wiring. No less relevant is the cable network for connecting television equipment. Especially in light of the trend to install this equipment in all rooms of the apartment, so that each family member has the opportunity to watch programs independently of others. To implement this feature, you will first need to select an antenna cable for your TV.

This is not difficult to do. The choice of antenna cables is not as wide as the power ones used for laying electrical wiring. But it still doesn’t hurt to know something about them.

Coaxial cables

The main difference between cables used to transmit television signals and others is their design. Based on the location of the conductive parts, they are classified as coaxial. This means that the cable is symmetrical about the horizontal axis throughout its entire length. And the better this symmetry is observed, the better characteristics cable line.

In the center of the cable there is a current-carrying core covered with an insulating sheath. Monolithic copper core, sometimes made of twisted copper wires. Sometimes the wires are tinned.

In modern antenna cables I use only a monolithic core. The cable is not subject to mechanical deformation in operation; it is usually firmly fixed along the entire route. It is not economically feasible to make it flexible.

The same applies to tinning: such complications are relevant only for laying cable products in rooms with an aggressive environment, forcing copper to intensively oxidize at the joints.

On top of the central core insulation is a shielded sheath. It acts as the second conductor of the line, and current, as is known, flows through at least two wires. The screen is covered with an insulating shell that protects it from environmental influences and mechanical damage.

In Soviet-made coaxial cables, the screen was made of thin copper wires woven in a special way. Modern ones most often use thin aluminum foil. The disadvantage of the second method is the ease with which the foil can be torn. To maintain contact in cases of such damage, a thin tinned copper wire is laid parallel to it. It will maintain contact by closing the torn piece of foil. And they tin it so that a galvanic couple does not form between copper and aluminum, leading to oxidation of the metals in contact with each other.

But using foil for the screen shell solves two problems: the cables become thinner, and connecting them is easier. There is no need to unravel the intricate pattern of copper wires, twist, tin and solder. Everything is solved by using standard connectors, splitters or plugs. Although the wicker shell does not prevent this from happening.

Some cables combine the use of a tinned braided screen with aluminum foil underneath.

Features of coaxial cables

Why to transfer television signals Do you need coaxial cables? The signals that pass through them are high-frequency - tens and hundreds of megahertz. But this is not the only reason to use such a design. The power and amplitude of the signals are too low - from microvolts to millivolts.

If you run such a signal through ordinary wires or cables, then interference from neighboring power lines will be superimposed on the signal. Moreover, any click of the switch or plug at the moment of connection to the outlet, due to the creation of a small electromagnetic pulse, will cause interference in the cable. The pulse will arrive at the input of the TV receiving device. If its amplitude is too large, semiconductor devices input stage will fail.

Coaxial cable is protected from such interference. The high-frequency signal field is located only inside it, between the central core and the screen. It cannot get out, but it is also more difficult for interference to get inside.

Characteristics of coaxial cables

Of all the characteristics of a coaxial cable that makes it suitable for installation television network, you only need to know the wave impedance - 75 Ohms. More precisely, if a cable is sold in a store as a television cable, then its characteristic impedance is equal to exactly this value. Which is easy to check either by the inscriptions on the shell, or, having found out its type, look up the parameter in a reference book or on the Internet.

Why 75 Ohm? We are accustomed to the fact that the resistance of a cable line varies depending on its length, and its high value leads to negative consequences. And here - any television cable, regardless of the thickness of the central core or screen material, has the same resistance.

Attenuation (decrease in signal magnitude in terms of voltage and power) in any cable that carries a high-frequency signal depends on the frequency of that signal. To be able to calculate this attenuation using Ohm's law, we introduced its characteristic - wave impedance.

For a coaxial cable, the characteristic impedance depends on the geometric dimensions of the core and screen and the insulation material between them.

But this is not the determining factor in choosing a cable with a characteristic impedance of 75 Ohms for connecting television receivers. To keep attenuation in the line to a minimum, the output of the signal source and the input of the receiver must also have the same resistance as the line. If this is not done, then, in addition to reducing the level of the useful signal at the receiver input, multiple reflections of the signal from the ends of the line will be observed. This will appear on the TV screen as a multi-contour image.

Historically, at the beginning of the development of television, it was optimal to manufacture cables with a characteristic impedance of 75 Ohms. And now there is no turning back.

There is another factor for choosing a television cable. You should not choose it with a thickness of less than 3.5 mm. Here, the correctly selected wave impedance will not help - the attenuation will be large.

Connector selection

In ancient times, to connect coaxial cables to television receivers, plugs were used, to which the cores were connected only by soldering. Now the process has become more convenient, a soldering iron is no longer needed.

There are two types of modern plugs. In the first, the central core is connected to the corresponding terminal of the connector with a miniature screw. The screen is crimped using the connector grip. To connect, the end of the antenna wire is cut with a ladder so that when connecting the central core, the screen is exactly under the clamp, and a layer of insulation remains between them. Not a single wire from the screen should touch the central core.

The second type of plug is much more convenient. The central core is plugged into the central terminal or used instead of the central terminal of the plug; the screen is bent back and, when assembling the plug, is tightly pressed into it. Such a connector is called an F-connector, and the plug is called a “transition socket F - TV NB plug.”

If you need to connect the two ends of the cable to each other, you should also not rush and pick up a soldering iron. For this purpose, there are connectors - plugs F. Cables are connected to them according to the same principle as described above. And the plugs are connected to each other using special connectors that have threads on both sides.

F-connector connector, colloquially called a “barrel”

Plugs F – universal method connections. Some household equipment already contains connectors for connecting the antenna cable using them.

TV signal splitters

To connect multiple TVs to one cable, you must use splitters. For what? And all because of the same input and output impedances of signal sources and receivers. All of them must be consistent with each other and with the cables used to transmit signals. This role is performed by the splitter.

The splitter is a passive element. This means that part of the signal is lost. With high-quality splitters, the amount of attenuation introduced into the transmission path is small. You can expect anything from cheap crafts.