Which TV antenna cable to choose? How to choose your own antenna cable for your TV

A necessary attribute of a modern apartment is not only electrical wiring. No less relevant 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 antenna cable for 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 the cables used for transmission TV signal, from the rest, 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 influences environment 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 or 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 do we need coaxial cables to transmit television signals? 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 installing a television network, you only need to know the characteristic 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 - anyone tv cable, regardless of the thickness of the central core or screen material, it 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 contains connectors in advance 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.

Even in this century digital technologies 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 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 avoid connecting a television cable with sharp bends or in a coil - the quality of the picture on the screen may 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.

TV cable models may vary, but general principle connecting them is unchanged

How to choose the right cable

Even the most modern television receiver and cable plugs are unable to produce an acceptable image with insufficient high quality cable. 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.

Example of cable marking Russian production indicating the main characteristics and technical conditions

How to connect a cable to a plug

You can connect the plug to the cable yourself, 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.

Step-by-step diagram of crimping a television cable with bending the braid and releasing the main core by 3-5 mm

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

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

Aluminum foil is often coated with polyethylene on the inside for strengthening purposes. 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 should 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

The antenna amplifier is used when the weak signal. 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 the best place The attic is where all the equipment is located. 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 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 sticking between the contacts causes the signal to deteriorate when air humidity increases: the image reproduced by an analog TV will become very snowy, and when transmitting a digital signal, the image will simply disintegrate into pixels with an unpleasant squeaking sound.

Connecting a television cable in the entrance panel is not difficult

FAQ

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 bad 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”.

Using splitters to connect several TVs to one TV cable

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 quality contact with 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 main vein 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.

Where are we today without TV? In many houses this electrical appliance became practically a member of the family. We enjoy watching colorful TV shows, documentaries about nature or science, music concerts, box-office films and much, much more. Naturally, we want the picture our pet produces to be as beautiful and high-quality as the one we saw when purchasing it in the store.

But often the image of the house is strikingly different for the worse, and many users simply do not realize that it is simply enough to do correct connection, and the picture will “come to life”. The article will tell uninitiated people which television cable is better, how to choose it correctly, and how to connect.

Of course, we twisted our hearts a little when we said that for good image All you need to do is choose the right cable. In fact, the quality of the received image—its resolution—plays a more important role.

But, nevertheless, this does not detract from the merits of the wires, since, if high quality signal install a cable that does not match it, all you will see is the maximum bandwidth of the selected option, that is, the image will become worse. We will reveal this dependence in more detail throughout the article.

Today there are two types of broadcast signals: analog and digital. We won’t go into physics and just outline the main difference.

Their transmission principle is similar, and some cables are capable of transmitting both signals. The main difference is that digital signal is rectangular, and conveys only two possible values: one of them corresponds to zero, and the second to one.

That is, all information is transmitted in the form binary code, like in a computer. Thanks to this, it is possible to cut off all the interference that abounds analog signal, and transmit the picture with sound to original quality. In addition, the analog signal transmits a lot unnecessary information, which reduces throughput cable data.

All this does not mean that an analog connection cannot transmit a high-quality signal. In some situations, the use of such wires is preferable to their modern competitor. Let's list all the analog cables used so far and figure out how to connect them

Coaxial cable

Here is a standard television cable, which everyone, without exception, is probably familiar with.

It is made in the form of a round elastic wire, which consists of:

• Central vein;
• A dielectric, which acts as an internal insulator and envelops the central core along its entire length;
• Shielded interlayer - not all cables have it, as this increases the price per linear meter of the product.
• External conductor;
• An insulating sheath that protects the cable from damage.

This cable is used not only in television equipment, but also in communications, and even for military equipment. It can transmit both types of signals and has not lost its relevance for many years in a row.

In modern television systems, in addition to connecting remote antennas, used: when connecting satellite dish to the receiver; when connecting several receivers in series; on cable television. Consequently, the picture quality in all these cases will depend entirely on the coaxial cable.

Which coaxial cable is worthy of the end consumer's attention? To answer this question, you need to know all the basic specifications this product, and what external factors worth considering when choosing.

From this video you will learn how to choose the right TV cable.

Let's outline the main points:

• Cable resistance - as we remember from school physics course, resistance is measured in Ohms. For a good home cable, this parameter should be at least 75 Ohms. This value is marked on the cable itself, and can simply indicate a specific number, or be encrypted, for example, RK - 75.75.

Advice! If you see a cable with one of the following markings - RG -6, RG -59, RG -11 - then you can safely purchase them, as they meet all the requirements for home television systems.

• Signal attenuation rate – any TV channel broadcasts on its own non-repeating frequency. Accordingly, each of them has its own level of signal attenuation - for some it is higher, for others it is the opposite. Therefore, you should purchase a cable with the lowest loss level, which is measured in dB/100m.
• Next, you should think about where the TV will be located and what route you are going to take to connect the wires to it. If a significant part of the cable (outside the window does not count) runs along the street, then it is worth choosing an option that is resistant to changes in temperature and humidity. To avoid mistakes, choose thicker wires with dense braiding, a powerful core, layers of carbon and various impregnations.
• Not every coaxial cable is suitable for transmitting a satellite signal. If your version has a central core less than 1 mm in diameter, then interference is inevitable. And all due to the fact that in addition to the signal, power for the convectors passes through it.
• It is better if the cable cores are made of copper.
• Choose options with a durable shell. Color doesn't matter.
• A layer of foil and dense braiding is required.

Now, regarding cable routing:

• It is possible to lay a coaxial cable next to power lines only if its thickness is at least 6 mm;
• The cable must not be bent more than 90 degrees, otherwise the dielectric shells may be damaged;
• The length is selected individually, depending on current needs;
• Use connectors and splitters to route the cable. Don't make homemade connections.

These tips will be useful to you to answer the question of how to improve your cable television signal. Now let's figure out how to mount a connector on a cable with your own hands. Here are instructions and photos on the topic.

• To begin, remove about two centimeters of the outer insulator;
• Then cut off the braid and internal dielectric, leaving about 5 mm at the base;
• Take a connector - in our case this is an option designed for satellite receiver, which has a screw thread for connection.

• Place the connector on the end of the cable;

• The connector will be tight, so use some force to get it snug;

Well, to make the connection stronger and not fall apart during operation (the receiver can be moved to another place), reinforce it with regular electrical tape.

Perhaps we have allocated too much space for of this cable, but it is still the most universal of all solutions.

Tulips are not only flowers

All the cables that we will consider below are used to connect equipment indoors. It is impossible to purchase them as moldings and mount the connector yourself. And the first on our list will be, perhaps, the most popular option - a composite RCA jack cable. In Russia it is better known as “tulip” or “bell”.

The cable has three cores, each containing a standard RCA male plug at the end, which looks like a contact pin protruding forward, surrounded by a round rim of metal. The mating connector (“female”) is located on the contact panel of the connected equipment and has a diameter of 8 mm.

One core is intended for transmitting a video signal, and the remaining two are for stereophonic.

The image quality that this connector is capable of transmitting is quite good - it is quite capable of handling a 480p signal with minor losses in quality. The disadvantage is that the composite mixes signals together thanks to multiplexing technology, which is why the quality of the restored image deteriorates compared to the original. Such signals, when mixed, create the effect of blurring shades and primary colors along the boundaries of objects - the picture turns out to be slightly blurry.

Installation TV antenna can be done at home independently, without the involvement of expensive specialists. For this procedure you will need a coaxial cable with the necessary components. How to choose a high-quality and optimal cable so that it will last for many years, and what parameters should you pay attention to when purchasing?

We offer expert advice and a selection of the most popular cable brands with descriptions, price categories and user ratings.

When choosing a coaxial cable, you need to consider a number of parameters:

Temperature resistance

Before choosing a cable, you need to consider where the cable will run. If the antenna will be placed somewhere behind the house or on its roof, then preference should be given to a cable that is resistant to temperature changes. The resistance of the wire to high moisture is also important. Best used for street wiring thick cable with a thickened central core. Such a cable must be framed in dense top insulation.

Diameter

• To place the antenna on a window or balcony, a cable with an outer diameter of 6-8 millimeters will be sufficient.
• For street wiring, a thicker cable is suitable - 10 millimeters in diameter or more.
• If we proceed from durability indicators, then it is better to immediately purchase a thick television wire.

Braid density

The density of the cable is an indicator of its long service life, but during installation sometimes you have to bend the wire in several places, so you should not take a cable with the most rigid insulation. A conductor in thin rubber, aluminum film or polyethylene dielectric, PVC is ideal. Good braiding should not be easily peeled or pulled off the wire, and it will not be easily scratched.

Copper core

The priority is for cables with a copper core. There is no evidence that other alloys are worse or unreliable, but according to the advice of electricians, it is better to buy a copper product.

There are also copper-plated steel conductors, most often their production is based in China, you should not be afraid of this, the service life of such wires is in no way inferior to copper ones.

Good composition

You can determine the composition of a coaxial television cable by asking the seller to make a cut on the wire. Ideally, in a cross-section, the buyer should view a copper core with a cross-section of at least 1 millimeter in diameter, dense insulation, a layer of dense foil and braided copper or tin, a screen made of aluminum or copper wire, dense outer shell made of PVC foam polyethylene.

Length of cable

This indicator should be purely individual. Before purchasing, you need to measure the distance from the TV to the proposed antenna. IN given distance All possible turns, nicks and bends must be included. The wire should not be close to both installations, it should not be stretched; a minimum reserve is required in case of reinstallation or stripping.

Cable accessories

When purchasing a cable, you must immediately buy splitters, connectors, plugs and adapters. Before purchasing, ask the seller to try them on the selected wire so that they fit exactly in diameter. Ideally, you should immediately stock up on corner adapters so that the bending of the coaxial cable is minimal.

How to connect the cable

Connecting the cable to a TV or antenna follows the following algorithm:

• You need to screw the plugs on both sides of the cable. To do this, you need to make a circular cut at the end of the wire, retreating 1.5-2 centimeters from the edge. You only need to cut off the top sheath of the wire without damaging the braid;
• Carefully bend back the foil and screen hairs. This method will release the inner layer of insulation. A circular cut is also made on this layer and the core is released from the protection. The distance from the bare core and the folded foil must be at least 2 millimeters;
• the last step is to screw the plug clockwise onto the wire until it stops, the remainder extra core cutting down.

Do everything again on the other edge of the cable.

Popular brands

3C-2V

Resistance 75 Ohm.

• copper-plated steel core 0.5 millimeters in diameter;
• second screen-braid of 32 steel threads;
• internal insulation - polyethylene dielectric with a diameter of 3 millimeters;
• The outer insulation shell is PVC with a diameter of 5 millimeters.

The cable is excellent for installing terrestrial and cable television over short distances.

The price of the wire varies from 10 rubles per 1 meter. User rating −9.6.

DG 113

• copper core 1.13 mm thick;
• double reinforced braid made of combined aluminum and plastic foil;
• a second layer of braid made of a combined material of tin and copper;
• inner insulation shell made of polyethylene dielectric;
• external insulation - PVC with a diameter of 6.6 millimeters.

The cable is practical, suitable for installing all types of antennas. Provides high quality transmission of high-frequency signal data without interference.

Price: from 65 rubles per 1 meter. Score: 9.9.

RG-58A/L

Characteristic impedance 50 Ohm.

• multi-core base of 19 copper wires with a diameter of 0.12 millimeters;
• first braided aluminum foil;
• second braid of 48 copper threads;
• internal insulating coating made of dielectric.
• external insulation - PVC with a diameter of 5 millimeters.

Price: from 50 rubles per 1 meter. Score: 8.7.

RG 59

Cable resistance 75 Ohm.

• copper-plated steel core 0.5 millimeters in diameter;
• the first braid is made of thin aluminum foil;
• screen made of 32 tinned copper threads;

The wire is suitable for transmitting signals from satellite and terrestrial antennas over long distances. It is possible to mount satellite antennas over short distances.

Price: from 20 rubles per 1 meter. User rating: 9.4.

RG-59+CU

Cable resistance 75 Ohm.

• copper-plated steel core 0.58 millimeters in diameter;
• the first layer of aluminum foil braid;
• second screen-braid of 48 copper threads;
• The external insulating coating of the cable is PVC with a diameter of 5.4 millimeters.

Price: from 25 rubles per 1 meter. Score: 9.1.

RG-6

Resistance 75 Ohm.

• single-core copper base 1 millimeter thick;
• the first braided screen is made of aluminum foil;
• braided screen made of 48 copper threads;
• internal insulation - foamed polyethylene;
• outer insulating shell – PVC with a diameter of 6 millimeters.

This brand of cable serves well when installing cable, terrestrial and digital television.

Price: from 10 rubles per 1 meter. Score: 9.6.

RG-6U

Characteristic impedance 75 Ohm.

• copper-plated steel core with a diameter of 1 millimeter;
• the first layer of aluminum foil braid;
• the second braid consists of 48 copper threads;
• internal insulation - polyethylene dielectric;
• outer shell - PVC with a diameter of 6.8 millimeters.

The cable is designed to receive signals from high frequency, but not suitable for constant current supply.

RG-6U+CU

Cable resistance 75 Ohm.

• copper core 1 millimeter thick;
• aluminum foil braid;
• braid of 48 copper threads;
• insulation from the inside - polyethylene dielectric;
• external insulation - PVC with a diameter of 6.8 millimeters.

Universal model. It simultaneously transmits high-frequency signals and direct current. Transmission occurs with minimal current losses.

Price: from 15 rubles per 1 meter. Score: 9.8.

SAT 50

Cable resistance 50 Ohm.

• copper wire with a diameter of 1 millimeter;
• reinforced double braid made of combined foil, aluminum and plastic;
• the second layer consists of a combined material: tin and copper;
• internal insulation - polyethylene dielectric;

The cable performed well in installation both outdoors and indoors. The wire is suitable for any antennas and does not distort the transmission of high-frequency signals.

Price: from 30 rubles per 1 meter. Score: 9.8.

SAT 703

The characteristic impedance of the cable is 75 Ohms.

• copper base 1.13 mm thick;
• screen made of two layers of aluminum-plastic foil;
• a second layer of braided tin and copper;
• insulation from the inside made of polyethylene dielectric;
• external insulation - PVC with a diameter of 6.6 millimeters.

This coaxial cable qualitatively transmits all television signals both on the street and in buildings

The cost of the cable is from 40 rubles per 1 meter. Score: 9.7.

RK 75

Cable resistance 75 Ohm.

• copper base with a diameter of 1 millimeter;
• the first braid is made of foil (thin aluminum);
• screen made of 48 tinned copper threads;
• Insulation from the inside is made of non-conductive polyethylene;
• insulation on the outside - PVC shell with a diameter of 6 millimeters.

They use wire to install terrestrial and cable television on the street. Suitable for installation satellite dish over short distances and during interior work.

The cost of the cable ranges from 12 rubles per 1 meter. User rating: 9.4.

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 not able to transmit the signal from a satellite dish without large losses.
A copper vein can easily transmit a television signal of any nature, including a signal from a satellite dish.

The 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 internal insulating shell protects the internal conductor from damage and also insulates from contact with the shield. It is made of plastic. In particular quality wires fluoroplastic is used.

The outer protective shell protects the structure from mechanical damage, dust, moisture, and others 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 wave impedance TV 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 a 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 television cable, then you can choose a cheaper option from the list.

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

Compound

After the purchase 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 a 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.

Connect the plug to antenna wire very simple:

1. Using a utility knife, make a circular cut of the top protective layer up to the screen shell, a couple of centimeters long;
2. After removal outer shell Carefully bend the screen 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 television 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.