Types of TV cables. TV cable: which one is better to choose?

When switching to digital TV broadcasting or installing a satellite dish, many of us are faced with problems that did not exist before. For example, the inability to tune the receiver to individual channels, ripples on the screen, unstable image.

As a rule, the root cause lies in the discrepancy between the parameters of the old line and the new operating conditions, namely, the discrepancy between the frequencies of the signal sources and its characteristics. Hence, tv cable needs to be changed. What you should buy, which type of television cable is better - the article will help you independently understand all the intricacies of the purchase issue.

Immediately choosing a television (coaxial) cable by color, thickness, examining its cut, trying to determine the structure of the product is a pointless and futile matter. Before going to the store, you need to clarify some features of the line laying and the TV broadcast itself. Only then will it become clear which products are for local conditions is the best.

General information about television cable

What is taken into account:

• Received format TV signal(digital or analog).
• Number of connected TV receivers.
• Cable laying diagram - route length, number of turns, presence of areas located outside the building, type of wiring (hidden or closed) and a number of other nuances in relation to your home (apartment).

Design features of coaxial cables

For all types of products, the structural composition is identical: outer shell - screen (usually two) - internal filling (dielectric) - central core.

Now, having decided on all the features of installation and signal reception, you can make a purchase quite consciously.

Criteria for choosing a television cable

The characteristic impedance of all cables (regardless of the manufacturer) for connecting TV receivers is 75 Ohms.

Outer shell

Either PE (white) or PVC (black). You need to see how dense it is. The greater its thickness, the stronger and more durable the cable. But there is also a disadvantage of this choice - the difficulty of bending the cable. Its radius will be limited, since it entirely depends on the size of the cable cross-section.

Screen (external conductor)

It can be either foil or aluminum film + braid. In older modifications of television cables there was only one screen, and was made only of braided wire. Similar products can still be found on street stalls and flea markets. The low price is, of course, attractive, but you need to understand that the cable in this design is definitely not designed to receive a television signal in digital format, especially with satellite dish.

Absence of a shielding layer of foil in the cable – a clear sign low-grade products. An abundance of interference on the receiver screen, TV broadcast failures, signal distortion and a number of other defects are guaranteed.

Central vein

It can be either copper or alloys (most often steel), but coated with this metal. The first option is preferable, since there is practically no signal distortion in such a cable. You need to pay attention to the thickness of the core (from 0.3 to 1 mm). IN in this case, the more, the better, since this parameter is associated with the attenuation coefficient of the electromagnetic waves (inverse relationship).

Cable thickness

The range of products is quite large. Experts note that you should not purchase a cable with a cross-section of less than 3.5 mm for household use. A TV connected to such a line will only receive signals in the meter range (ORT, RTR, NTV and a number of others). In fact, the choice of channels is sharply limited.

To watch programs broadcast via a satellite dish or in the UHF range, you will have to install additional equipment. It is unlikely that such expenses when organizing “household television” (and paying for the services of a specialist) can be called justified.

Manufacturer

There are quite a lot of them. The peculiarity of television cable products is (as experts note) that even the presence of a certificate for a product is not a guarantee of its high quality. The most common markings are: SAT 50 (703B), RG 6U, DG 113.

Examples include such manufacturers as Commscope, Mediaflex, Cavel, Belden. Today, their cables are the best, and if you have a choice, it is advisable to purchase from this list.

Price

Here it is briefly - high-quality television cable for less than 10 rubles per pip. m. cannot cost.

The longer the television cable route, the thicker it should be (due, as already noted, to the attenuation of the TV signal). For example, if the antenna is installed directly outside the window, on a loggia, then 6 mm is sufficient. When connecting the cable to the roof of the house, you should purchase products with a larger cross-section.

When choosing a cable, you need to take into account the features of its installation. If there is an engineering communication next to it that creates an EM background (electrical wiring, powerful signal lines), then it is advisable to purchase a cable of greater thickness (at least 10 mm), and with the most reliable protective sheath. Otherwise, failures in signal reception, interference, and interference cannot be avoided.

Since the times of the “land of Soviets”, a cable under such a popular brand has been known (and before it was the only one in retail sales), like RK-75. Home craftsmen, often out of habit, focus on it. It is worth saying that this is not best solution, especially since there is now a choice.

Reason – great value attenuation coefficient. It can provide a good image on the TV screen and sound only if the reception is organized at indoor antenna, that is, with a short line length. In other cases - output to a balcony, roof - problems will constantly arise with the stability of the TV signal, especially when switching channels.

The television cable should always be taken with a small margin in length. There are plenty of reasons. Firstly, sometimes the signal disappears if there is damage at the points where the line is connected to the splitter (when connecting several TV receivers), and you have to re-cut the cable.

Secondly, often updating the interior consists only of reinstalling the furniture, including the TV receiver. In this case, the extra length will definitely not be superfluous.

There are cables on sale that are specially impregnated during the production process. They are ideal for installation outside buildings ( air lines, buried routes). When planning a purchase, it is worth considering this feature of this modification.

If you look at the materials posted on thematic forums, most positive feedback falls on cable brand CAVEL (Italy). This is not an advertisement, but a statement of fact. Many users note a number of advantages of this product, which position it favorably against the background of analogues.

• Higher quality internal filling (foamed dielectric).
• In the production of coaxial cables under this brand, only pure copper is used.
• Increased moisture protection.
• Large selection of products.
• The minimum attenuation coefficient that does not change under the influence of external factors(humidity, temperature).
• Service life (guaranteed by the manufacturer) is at least 15 years.

Conclusion

To connect television receivers in a house (apartment), you need to choose a cable:

• cross-section – within 6.5 ± 0.5 mm;
• by the number of screens – two;
• by manufacturer.

Buying a TV for your home is a very serious matter for which you need to seriously prepare. If you have an expensive screen in your home, you should ensure that the equipment is equipped with the best components. Coaxial cable for TV - which one to choose? If you are interested in repairs and at the same time the question of buying TV equipment is brewing, then you should choose the best antenna cable for TV. Obviously, there are thousands of different variations of this equipment on sale, which differ in name, parameters, markings and colors. And different types of television offer the user “their own” components, but this is not always the best option.

We will not hide the fact that such an abundance of technology can baffle even a qualified specialist, so today we will talk about the most good models, which you should pay attention to.

Important! If you have at least a general understanding of the topic that is on at the moment in question, you might be interested to know:

Basic concepts and parameters

Before you start looking for an answer to the question of which antenna cable is best to use for a TV, you should understand the main nuances of the device.

Device

The principle of operation and manufacturing are not much different. There are main cores that are hidden in insulation, and a screen and braid are laid on top of this material. The “cherry” on this “cake” is the protective shell.

Important! You should know that conductors of this type are called coaxial.

Materials

Good coaxial cable for TV will include such materials.

The internal conductor is capable of transmitting data in all forms known to television and powering the satellite converter. That is why the materials contain copper and steel, or more precisely:

• the central core itself is made of steel;
• A small layer of copper material is applied on top of it.

Important! The copper core itself is needed only by the satellite, and everything else is done by a steel component with a copper layer applied.

The braid and shield are designed to provide protection against a wide variety of interference. The higher quality these parts are, the better the quality of the television signal itself will be:

• To create a screen, aluminum or lavsan foil is used.
• Copper or aluminum wires are suitable for braiding.

Important! There is a value that characterizes the level of protection. It is best to give to those devices for which this value varies from 60 to 80 decibels.

Inside there is a plastic dielectric that reliably hides the central conductor, protecting it from various types of damage and isolating it from contact with the screen or braid. The outer shell hides all the filling and helps to avoid mechanical stress. At the end of the work, all installed cords can be hidden in

Marking

TV antenna cable - how to choose? The product labeling should also be taken into account. Most often, the following brands of coaxial conductors for antennas are used:

Important! Each of them has characteristic impedance at 75 Ohm and is only suitable for one TV.

Review of popular models

In order to find the best antenna cable for your TV, we have compiled small rating popular devices.

RG-6

This model was provided to the market by a manufacturer from Russia, but the production, oddly enough, is Chinese:

• The central core (central core) is made of copper and has a thickness of 1 millimeter.
• This component is hidden inside a shell made of classic polyethylene foam.
• The conductor is equipped with a foil shield, aluminum or copper braiding and protective material.
• The average wire thickness is approximately 7 millimeters.

Important! This brand is perfect for cable, classic and digital television. A meter of this product will cost 6 cents.

RK 75

Analogue to the previous product, which is also produced in Russia:

• A copper core with a thickness of 1 millimeter, a PE dielectric and a copper screen.
• The single screen allows the use of a conductor for playback and transmission of on-air, as well as cable television.
• Dual screen of this type Suitable for a satellite dish installed inside the building.

Important! A meter of this product costs about 9 cents.

RG 59

A small-sized version of the first representative of the family with a thickness of 0.57 millimeters and an outer diameter of 5.5 millimeters. Copes with all known types of signal transmission. It can work with satellite data at a distance of about 200 meters.

Unfortunately, the small thickness causes increased attenuation, which negatively affects image quality with every meter of distance.

Important! This model can only be used for one TV set. The product is very fragile and can easily break under external mechanical influence. Despite this, such a purchase will cost 16 cents per meter.

SAT 50

Italian products from the manufacturer Cavel:

• The central fluid is made of copper and has a thickness of 1 millimeter.
• The screen of the product is reinforced and has two layers of foil and braid.
• The shielding factor is about 60 decibels.
• The shell material is a PEG dielectric.
• There is a PVC outer sheath and the cable diameter is 6.6 millimeters.

Important! Works with all types of TV signals. A meter of this product costs around 17 cents.

Still haven't decided which coaxial cable to choose for your TV? Then we move on with our rating.

SAT 703

The brainchild of the previous manufacturer:

• The conductor is made of copper and has a thickness of 1.13 mm.
• The screen, again, consists of two layers of material (aluminum + plastic).
• The copper-tin braid provides a good shielding factor of 80 decibels.
• The shell is the same as that of SAT 50, which makes this option recommended for purchase by those people who are interested in watching satellite television.
• The quality of the materials allows installation on the street.

Important! A meter of such a conductor costs about 24 cents.

Are you still interested in the question: antenna cables for TV - how to choose? You will be able to think rationally if you evaluate the quality of the next product.

We connect, change, install, repair antenna cable for TV.
The antenna cable laid around the apartment is checked for weakening of the television signal and shielding of radio-electronic interference.

The "Parameters and Specifications" section provides the necessary information for the right choice and shopping.

We provide service to all areas of Moscow and the surrounding Moscow region. on the use of cables and connectors to obtain high-quality television images.

Depending on the place where it is laid antenna cable for tv(small apartment or large country house), as well as from the source of the antenna signal (panel on the staircase, external terrestrial passive or active television antenna, or satellite dish), as well as the number of connected TVs, make different demands on the “stream” through which our favorite TV shows will flow into our home. The quality of the transmitted antenna signal is significantly influenced by several basic characteristics of the antenna television cable.

Which TV antenna cable is better?

The table below shows the characteristics and comparative parameters - antenna cable for tv:
Sat 703. TV cable manufacturer Cavel, diameter 6 mm, copper central core, double shield with copper braid.
Sat 50. Manufacturer Cavel, cable diameter 6 mm, copper central core, double shield with copper braid.
RG-6. Manufacturer Rexant, diameter 6 mm, copper-plated steel central core of the cable, double screen.
RG-59+CU. Manufacturer Rexant, diameter 5 mm, copper central core, cable with double shield and copper stranded braid.

As can be seen from the table: antenna cable for a TV - characteristics and parameters, the main difference appears at high frequencies in the decimeter range television channels. It is better to use a Cavel cable for a TV antenna for satellite television signals with a frequency of 1750 MHz.

Answer questions which tv cable is better And how to choose an antenna cable for a TV Labeling it helps. You should find out the specific operating conditions and the devices connected to it. It is also important to know the source of the television signal - terrestrial or satellite antenna, the climatic conditions of the cable, the total length of the installation, the number of connected TVs, the presence of powerful sources of electrical interference, the diameter of the outer insulating layer and even the color of the television cable should be taken into account when ordering.

1. Diameter - a television antenna cable with a smaller diameter is easier to lay around the apartment, mask, and has a smaller bending radius. But in all other characteristics it loses, and most importantly, it has not only a smaller overall size, but also a smaller central core diameter: 0.5 mm. Therefore, the connection and connection of such a cable will not be good in standard connectors and splitters designed for a center conductor diameter of 1 mm.
2. Shielding - A modern television cable has a main metal foil shield and an additional metal braided shield, which reduce the level of interference from sources such as electric motors and transformers household appliances, radiotelephones. Replacing an old single-screen cable with a dual-screen cable often improves picture quality: ripples from interference on the TV screen disappear.
3. Protective carbon layer- the presence of a protective carbon layer in the television cable implies its connection outdoors. Operating conditions, whether the product will experience temperature changes from + 40 in the summer to - 30 in the winter, determine the service life.
4. Composition of the central core and braid- it is believed that TV wire with a copper central core it is better. This opinion is not always true. A cable with a copper core is used in installation satellite systems, where direct current flows through the central core, together with the high-frequency television signal, to power the converter. In the case of cable and terrestrial television, the radio frequency signal - that is, essentially high-frequency currents - flows exclusively along the surface of the conductor. Thus, when transferring antenna signals, a cable with a copper-clad steel core will not lose in attenuation characteristics.
5. TV cable length- the overall attenuation of the signal, that is, a decrease in the level of the television signal, is a multiple of its total length, and when installed inside an apartment, when about 30 meters are spent through a splitter, it has no practical significance.
6. TV cable color coding- there is an opinion that by the color of the external insulation, or the stripes applied to it, we can talk about its quality. It is believed that black cable is intended for outdoor use, and white cable is intended for indoor installation, that longitudinal color stripes indicate its quality, and green is the best. However, the properties can only be judged by the technical characteristics, in which there is no color marking. The choice of color depends on the preferences of the buyer, and the presence of stripes on the cables different colors simplifies installation cable systems with lots of wires.

REXANT TV cable marking

REXANT brand products appeared on Russian market not so long ago. The company's production facilities are located in China. TV cables, as well as F-connectors, plugs, lugs, adapters produced by REXANT are in mass demand thanks to good ratio prices and quality.

RG is produced by REXANT. The most widely used types of television coaxial cables are: RG-6U+CU; RG-6U; RG-59; RG-59+CU; 3C-2V and RG-58A/L.

REXANT RG-6U+CU wave impedance 75 Ohm, consists of a coaxially placed central single-core copper conductor with a diameter of 1 mm; screen consisting of aluminum foil and 48 copper threads. The internal solid conductor is made of copper, ensuring simultaneous signal transmission high frequency And DC With minimal losses, and is enclosed in a polyethylene dielectric, which maintains the coaxial location of the conductor and the screen. The outer sheath of the cable is made of PVC and has a diameter of 6.8 mm, which ensures reliable fastening of the F-connector to it. The REXANT RG-6U+CU antenna cable is suitable for transmitting signals from satellite and terrestrial antennas, as well as cable television signals.

REXANT RG-6U wave impedance 75 Ohm, consists of a coaxially placed central single-core copper-plated steel conductor with a diameter of 1 mm; screen consisting of aluminum foil and 48 steel threads. The internal solid conductor is made of copper-plated steel, which provides high-frequency signal transmission with minimal loss, but is not intended for direct current transmission, and is enclosed in a polyethylene dielectric that maintains the coaxial location of the conductor and shield. The outer shell of the television cable is made of PVC and has a diameter of 6.8 mm, which ensures reliable fastening of the F-connector to it. The REXANT RG-6U antenna cable is suitable for transmitting signals from over-the-air antennas, as well as cable television signals.

REXANT RG-59+CU characteristic impedance 75 Ohm, consists of a coaxially placed central single-core copper conductor with a diameter of 0.58 mm; screen consisting of aluminum foil and 48 copper threads. The internal solid conductor is made of copper, allowing simultaneous transmission of high frequency and direct current signals with minimal loss, and is enclosed in a polyethylene dielectric that maintains the coaxial location of the conductor and shield. The outer sheath of the cable is made of PVC and has a diameter of 5.4 mm, which ensures reliable fastening of the RG-59 F-connector for 5 mm cable. The REXANT RG-59+CU antenna cable is suitable for transmitting signals from satellite and terrestrial antennas, as well as cable television signals over short distances.

REXANT RG-59 characteristic impedance 75 Ohm, consists of a coaxially placed central single-core copper-plated steel conductor with a diameter of 0.5 mm; screen consisting of aluminum foil and 32 steel threads. The internal single-core conductor is enclosed in a polyethylene dielectric, which maintains the coaxial location of the conductor and the screen. The outer shell of the television cable is made of PVC and has a diameter of 6 mm, which ensures reliable fastening of the RG-59 F-connector for a 5 mm cable. The REXANT RG-59 antenna cable is suitable for transmitting signals from terrestrial television antennas, as well as cable television signals over short distances.

REXANT 3C-2V characteristic impedance 75 Ohm, consists of a coaxially placed central single-core copper-plated steel conductor with a diameter of 0.5 mm; screen consisting of aluminum foil and 32 steel threads. The internal solid conductor is made of copper-plated steel, providing high-frequency signal transmission, and is enclosed in a 3 mm diameter FPE polyethylene dielectric, which maintains the coaxial location of the conductor and shield. The outer shell is made of PVC and has a diameter of 5 mm, which ensures reliable fastening of the RG-58 F-connector on it. The REXANT 3C2V antenna cable is suitable for transmitting signals from over-the-air antennas, as well as cable television signals over short distances.

Options TV cable.

Total length from the signal source to the TV.
With a total cable length of less than 20 m, the practical impact is not noticeable. (Defining parameter: attenuation per meter of length)

Frequency range television signal carrier. The table of terrestrial analogue and digital channels, as well as the frequencies of cable television channels, are in the same range, and the carrier frequency of the television signal from the satellite antenna is much higher (the defining parameter is the frequency dependence of the attenuation).

Presence of electronic interference.
Modern tv cable protected by two shielding layers: foil and braid, the density of which significantly affects the effectiveness of the shielding factor. (parameter: shield efficiency)

Installation location- an antenna television cable laid outdoors is exposed to ultraviolet radiation, significant changes in temperature and humidity. (Determining parameter: aging coefficient. The presence of an external protective carbon layer significantly reduces the impact of the environment)

TV cable thickness, which is measured by external insulation (defining parameter: diameter). The ease of laying and masking depends on the diameter. Most often, a wire with a diameter of the outer insulating layer of 6 mm is used. Sometimes a thinner one with a diameter of 5 mm is used.

I wonder how many people know how to choose an antenna cable for a TV on their own? It would seem that there is nothing difficult in buying a regular wire in order to connect the antenna to the TV. In fact, some characteristics of the TV cable can affect the quality of the transmitted signal, which directly affects the image quality. Therefore, before you go shopping, it is better to ask what parameters of the wire you need to pay attention to.

Antenna cable: structure, characteristics

The cable used to connect the television receiver and antenna is called coaxial or coaxial.

Coaxial (coaxial) cable is used to transmit electrical television and radio frequency signals. This wire provides signal transmission excellent quality due to the structural features.

A quality coaxial cable should have the following components:

1. The outer insulating layer or shell. This layer is necessary to insulate conductors from mechanical damage and external environmental influences, such as moisture, dust, sun rays, temperature changes. Special durable polyethylene, polyvinyl chloride or fluoroplastic tape are used as raw materials for the manufacture of the shell.
2. A layer of outer conductor. The first level of the outer conductor layer is a braid of tightly woven aluminum or copper wires.
3. Screen. The second level of shield or outer conductor consists of foil.
4. Dielectric layer. It is designed to isolate external conductors from the central core. Made from foamed polyethylene or solid fluoroplastic tape.
5. Internal main conductor or core. It is a wire that can be single-component or twisted from several thin wires into a spiral. The main conductor is made of copper or steel, but at the same time covering the outer part with copper.

This wire structure protects the transmitted signal from external electromagnetic radiation that may cause interference or be absorbed by it.

There are several types of coaxial wires that differ in characteristics.

According to the size of the outer insulating layer:

• super thin with a diameter of up to 1 mm;
• thin: the insulation diameter of such cables is from one and a half to three millimeters;
• medium: from 3.7 to 11 mm;
• large: the insulation diameter of large cables exceeds 11 mm.

If cable bending (flexibility) is possible:

• rigid, practically unbending. Thanks to the dense layer of insulating material, they have high resistance to mechanical stress, including bending;
• medium hard - bending up to 90 degrees is allowed;
• flexible cable. A type of cable whose structure allows bending;
• very flexible. This type of insulation is made of soft raw materials with low resistance to cable bending.

Nuances when choosing a coaxial cable

In order to purchase a quality cable that will last for a long time, some points need to be taken into account. Namely:

1. In what environment will the cable be laid? This refers to the environmental conditions under which the conductor will be used. It’s one thing if the connected antenna is on the balcony and the main part of the conductor will run indoors. In this case, you can purchase a cable with a small diameter insulating layer, moderately flexible, so that it can be bent when laying. If most of the conductor will be laid outside, then you need to choose a model with insulation that can withstand temperature changes and precipitation.
2. It is better to think in advance where to buy an antenna cable for your TV.
3. Calculate the required length of the wire, taking into account turns and bends during installation, as well as the number of connected television receivers.
4. Take into account the type of signal transmission depending on the type of broadcasting: satellite, terrestrial or cable television. Of course, there is no need to buy several different types conductors for different broadcast signals. But it will be useful to know that a wire with a central core less than 1 mm in diameter transmits very poorly satellite signal. Therefore, it is better to purchase a conductor with a core diameter of more than 1 mm.
5. For high-quality transmission of radio frequency waves, the screen under the braided layer must be made of foil or aluminum. In low-quality models, this layer may be made of cellophane, which does not contribute to the transmission good signal without interference.
6. It is imperative to pay attention to the quality of the outer insulating layer. It should not be easily subject to mechanical stress, but it should be flexible enough for ease of installation.
7. It is also important not to forget to purchase the accessories that will be needed for installation and connection.

Review of antenna wires of different brands

We present an overview of models that will allow you to quickly select an antenna cable for your TV and decide which is better.

A number of models from the Russian manufacturer Rexant, presented in the table, are notable for their low cost and quite good quality signal transmission. The cost ranges from 10 to 20 rubles per meter. Models RG 6 and RG 59 are ideal for indoor installation due to their sufficient flexibility and small outer diameter.

Conductors from the Italian manufacturer Cavel are more expensive, while providing high quality wiring and signal transmission. The cost per meter of cable from Cavel averages about 30 rubles per meter and more. The Sat 50 model is considered the most optimal in terms of price/quality ratio. Due to its versatility, Sat 50 is most often used for installation both indoors and outdoors. Moreover, it can be connected to transmit signals for both satellite, terrestrial, cable, and digital broadcasting.

Thus, deciding which coaxial cable to choose for your TV is quite simple, knowing the necessary parameters and characteristics.

Satellite and digital television appeared a long time ago, high-quality television broadcasting in every home is no longer a rarity, but nevertheless, few people know which cable is best for a TV. It is this that ensures the quality of the received signal. If you switched from analogue television to satellite or digital, you may have noticed that often the channels were not received at all, the image became blurry, and various sound and visual interference arose. The reason for this is most often an incorrectly selected cable that does not meet the new signal requirements. Therefore, you will have to change the cable.

To carry modern television broadcasting into homes, it is used coaxial tv cable b, however, choosing the right one is not so easy. First of all, it is necessary to determine what requirements are put forward for the cable network, namely:

• type of TV signal received (analogue, digital TV broadcasting);
• number and type of televisions;
• place of use: TV cable in the apartment or in a big house;
• location of the TV signal source (dish, panel or antenna);
• system length.

TV broadcast cable structure

At the moment there are quite a lot of television cable models, however internal structure they have identical:

• the inner central conductor is made of single or stranded wire or copper tube; the conductor material ensures the range of the telesignal and the possibility of deformation;
• the dielectric layer (insulation) is designed to ensure the immobility of the conductors; most often made from various polymers; signal attenuation and characteristic impedance depend on the interlayer material;
• braid - outer conductor; made from foil, aluminum film or metal wire; provides protection from external electromagnetic influences;
• the outer sheath is designed to protect the entire cable structure from various external influences;

Television cable - which one to choose

The modern format of television broadcasting involves the use of a cable with a resistance of more than 75 Ohms. This is a universal requirement for all television cables, however, in each specific case other criteria should also be taken into account.

Outer shell structure

The cable can be black or white. This depends on the material of the outer shell. Polyvinyl chloride (black) or polyethylene ( white). Previously, there was an opinion that for external television it was necessary to use a black cable so that it could be clearly visible on a white wall, but now this is not at all important, therefore cables with a protective sheath made of polyethylene are used both for internal and external use. external works. More important is the thickness of the protective shell: the thicker it is, the better. But if the cable is too thick, the bending of the structure will be significantly limited - sometimes this is important, so this also needs to be taken into account.

Characteristics of the external conductor

The outer conductor must have two shielding layers - one layer does not meet the transmission requirements of modern television broadcasting. Previously, simple braided wire was used as a material, but such a cable will not be able to provide a high-quality satellite or digital television signal. To do this you need to take a cable, home screen which is made of metal foil and which has an additional braid. It is made from an alloy of various metals to reduce possible interference from household appliances.

Characteristics of the central core

The central core is most often made of copper or an alloy of other durable metals, which is necessarily clad with copper to ensure high strength. Experts recommend using cables with a copper core, although there is no evidence that copper transmits signals better than alloys of other metals. However, metal alloys significantly increase the diameter of the cable, which is not noticeable when using copper. For a television cable, the smallest possible diameter is important because it is convenient to lay. For home use A cable with a core diameter of 3.5 mm is quite suitable. More is possible, but not less.

You can choose an inexpensive cable with a core diameter of less than 3.5 mm, but then you will have to buy special equipment to improve the signal quality, so you need to take the choice of core cross-section very seriously.

Manufacturer

At the moment, the market is crowded with various manufacturers of television cables, since it is very profitable, but not everyone produces a cable that conducts the signal without interference. Before buying a television cable, read reviews about each manufacturer on the Internet, and also consult with sellers.

Cable length

It is impossible to predict in advance all possible interference when laying the cable, so it is necessary to take it with a reserve. It is best to take a cable twice as long as the expected installation length, since some section of the cable may be damaged and will need to be replaced. But mechanical damage occurs rarely, but rearranging furniture is much more common. If the cable does not have a reserve in length, then the TV will be chained to one place, and there can be no talk of any rearrangement.

The thickness of the cable itself also depends on the length. The longer the network, the thicker the cable should be so that there are no external influences on it. In addition, you should remember that the antenna cable needs a larger cross-section to prevent interference. Some cable models require certain installation conditions, which is very important to consider if you decide to install television yourself.

Can't be named best tv cable, although one common marketing ploy is the so-called “digital special” cable, which supposedly only receives digital television broadcasts. Satellite and digital television operates at frequencies from 5 to 3 thousand MHz - it is the frequency that determines whether the cable will receive the signal, and not the “specialty” of the cable itself.

Where to buy television cable in Moscow wholesale

AVS Electronics is a manufacturer itself coaxial television cable, at the same time, a partner and official distributor of famous brands this range of cable products. For example, you can always order in bulk from us and buy television cable SAT 703. There is always a large assortment of RG 6 television cables, which you can buy in bulk at favorable and cheap prices.

More detailed information O technical specifications TV cable, its analogues and availability can be obtained from specialists at AVS Electronics.

We invite you to cooperate!