When moving video surveillance systems, we are faced with the fact that the current wire is not enough and it needs to be lengthened. Let's consider how to increase it without losing the quality of the video image. As we already know, a central conductor (usually a monocore) and a braid (stranded) are used to transmit a signal over a coaxial cable.
The method of connection may depend on the type of coaxial cable and on the environment in which the junction will be located.
We extend the outdoor coaxial video surveillance cable or twisted pair cable.
The joint is located outdoors, in the ground, or in other harsh environments. Provide a sealed protective box by placing the docking point in it. For reliable fixation and for better tightness, we use heat shrink tubing. Under the influence of temperature, it shrinks and securely fits the junction of our wires. When using plastic junction boxes and the absence of pressure seals in them, the sealing gums can be additionally smeared with sealant.
The center core of a coaxial cable can be solid or stranded.
To extend (connect) a solid cable:
- One way is to wrap two threaded coaxial F connectors on the end of each cable and connect them to each other with an F socket. The advantages of such switching are that the central core of the conductor plays the role of a plug, and this will help to avoid additional signal losses. Crimping F connectors does not require special tools, and the connection is resistant to mechanical stress.
- Connection or extension using coaxial connectors: two BNC video surveillance connectors (preferably crimped) on each side of the joint. They are connected to each other by the I connector (mother-mother).
To extend (connect) a multicore cable:
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The central vein consists of many thin soft interlaced threads. We clean and twist all the hairs of the central core together, dip in neutral soldering fat, and then, thanks to the soldering iron, in molten solder. As a result, the central core will become tinned and hard. Next, we connect the two wires in the same way as in the case of a monocore: using two F connectors and an F socket (barrel).
- Using coaxial connectors: two BNC video surveillance connectors (preferably crimped) on each side. They are connected to each other by the I connector (mother-mother). The stranded cable will first need to be tinned, as in the previous case.
Other ways to lengthen the CCTV coaxial cable:
- Twisting is not the most the best option increase the wire, as the reliability of such a connection suffers. After building up the coaxial, try to move the junction, the image should not double and there should be no interference. Over time, the twist can oxidize, this will affect the image quality.
- Cable soldering. This method is not suitable always and not everywhere. Since characteristic impedance is important for video signal transmission, it is not enough to simply make contact between two conductors.
We build up a video surveillance cable based on a twisted pair.
How to lengthen a twisted pair cable?
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It is best to extend a twisted pair cable with a connector and connectors: "pass-through modules". First you need to crimp the two ends of the wire with rj-45 connectors (8P8C) with a crimper. Next, they need to be connected by a "pass-through module".
- As an alternative, there are pass-through adapters (utp extension cable), for terminating crosses.
- Stranding is not the best option to build up the wire, the reliability of the connection suffers, the twists are oxidized. You can use this splicing method if you do not have another tool at hand.
- Extending utp wire by soldering. A long, difficult option, moreover, not always possible.
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Hello dear readers of the blog site. V Lately I wrote several articles regarding the installation of digital television in the country. Today I want to talk about how to lengthen the antenna cable if you need to move it for better reception, or the TV installation location is not suitable for comfortable TV viewing.
In the article about, I already managed to touch on the topic of the need to purchase a high-quality coaxial cable in order to avoid the occurrence of possible problems with signal reception. But I will tell you below about what to do and what tool you need to purchase and I really hope that everything will be as accessible and clear as possible.
Properly done work will not affect the quality of the received signal. If malfunctions occur or quality deteriorates after work, then it is worth checking all connections and assessing how quality materials have been purchased.
Necessary tools and materials for extending the antenna cable
If you need to move the TV to another room, or to the corner of the room, there is a shortage of wire length and the question arises of buying an additional segment. Before you go to the store, be sure to inspect the existing one, evaluate the thickness of the central core, rewrite the marking, and it is best to cut off a small piece for a good example when buying.
In my opinion there are only two best way lengthen the TV cable. The first using "F" connectors, and the second using a "splitter" for possible further wiring to several devices.
I will not talk about soldering, since this is a rather complicated matter. When building up a television cable by soldering, it is difficult to achieve the proper wave resistance. And the junction itself will be very fragile.
So let's take a look at both options one by one.
How to extend a TV cable using "F" connectors
For this method, we need two f connectors and one f connection. Before proceeding with the build-up, the wire must be properly “cut”. To do this, the top shell is carefully removed without damaging the screen. We twist the shielded braid and bend it in the direction of the cable. We remove the foam insulation, thereby exposing the central core. The approximate length of the released core should be about one and a half centimeters.
Such an operation must be carried out on both ends that you want to splice. After the performed operations, we take f connectors and carefully wind them onto the wire. Follow that so that the center wire does not come into contact with the outer shield.
For better fixation, the junction can be wrapped with electrical tape. This fixation will not allow your product to crumble when bent and deformed.
This was the first way to lengthen a coaxial cable. Now I propose to consider the second option and, in my opinion, more practical.
How to extend a coaxial cable using a splitter
Let's first understand what a splitter is and what it is for.
The splitter is a small box with one input and several outputs. The splitter is intended for branching the connected antenna to several TVs, or to one cable. When choosing a suitable device, you should immediately determine the number of connected TVs. This is necessary for right choice divider.
To begin with, such a device should be rigidly fixed on a flat vertical or horizontal surface. Only then proceed to direct installation. In fact, this method of building an antenna cable is similar to the previous one. As in the first case, it is necessary to use two f connectors wound on the ends. After that, we connect the wire coming from the antenna to the input of the splitter, and connect the piece with which we are going to extend the line to the output. In fact, this is the same f connector only with the possibility of further branching.
That's actually all the information on how to extend the antenna cable. If, in your opinion, the article seemed incomplete and you are looking for other solutions to the problem, then I can easily supplement it, it’s just that in my opinion these are the main and most simple ways problem solving. In addition to all that has been said, I propose, for general self-development, to read an article about, since this question arises quite often when rearranging furniture in an apartment or moving. For clarity and consolidation of the material, I suggest watching the corresponding video.
The process of building a wire is not an easy procedure, but at the same time everyone can deal with it. There are rules to follow. The sequence of all actions must occur with accuracy, because we are talking about an electrician. Can wires be extended? Experts give a positive answer.
Which method to choose?
Wires and cables are various designs and interior filling. The cores can be made of copper and aluminum. Winding - in one or several layers. This depends on the scale of the work performed. Before building a wire, these nuances are taken into account. Experts say that it is theoretically possible to connect even cores from different metal but this is for those who have experience.
Options
If access is good and the connection must be made from the same material, then it is important to apply the following options:
If you want to build up components from different materials, one of better ways- apply clamp.
What do you need to have on hand?
In each work, a tool is required, including for building wires. There is no need to tell how a simple twist is made, which is simply fixed with electrical tape, because this method is not useful and short-lived. You don't have to do everything in a hurry. You can get an electric shock, and the appliance will not work as it should.
For work you will need:
- sharp knife, side cutters. With this, it will be necessary to remove the winding in order to obtain the main cores to lengthen the entire structure. Before you increase the wire in the shield, you need to turn off the current supply. Otherwise, it will not be possible to avoid injury or breakage of the main core.
- Pliers or screwdriver. Thanks to them, it is easier to connect, move, attach.
- insulating material.
Depending on the chosen method, everyone has the right to supplement this list. Experts say that in the process of lengthening, problem situations always occur. If you know how to get out of them, it is easier to work.
What can happen?
Before building up the wire, everything is prepared - the winding is removed, and there it is already clear that the core itself is made of such metal. At the same time, non-standard situations occur even at the level of analysis of the structure.
DIY work
It should be understood that any independent work, which is performed illiterately, leads to fire hazard situations. If you perform elementary twisting, oxidation will occur after a while, and then heating. It's not worth the risk and splicing aluminum and copper wire. Only the terminal block allows you to create a high-quality connection and exclude the connection of different wires.
Heat shrink tubing is effective insulation. But it cannot be used everywhere, because it is necessary to produce a slight heating so that it sits tightly on the bare cores.
Sequence
The work process is simple.
As a result, the insulation is made qualitatively and without spending a long period of time.
Difficult cases
Before you build up or copper, you should understand how long it is. It is clear that when it is short, you will have to hammer the wall, but not everyone is ready for this. If you decide to break through the wall, then you will have to clean everything up after, and when the repair was completed not so long ago, it is difficult to go for it. Soldering and twisting are completely eliminated.
But in stores there are special connecting blocks. You can use such a system even on wires made of different materials. Works have their stages of execution:
Both wires should be fixed as tightly as possible, there should be no flying out. This option is simple and affordable for every person, even a beginner. The store has a lot of different pads from manufacturers from many countries. It is clear that products from China will not be of a high degree of quality.
Conclusion
So, we found out how you can connect the wires with your own hands. When performing such operations, you should always remember that working with electricity is unsafe. It is worth checking that the wire requiring increase is de-energized and is not capable of hitting. Doing soldering with your own hands is not as easy as already noted. In this situation, it is important to choose the right soldering iron. It must be thin, otherwise nothing will come of it. The substance with which the process of riveting and elongation will be carried out should also be chosen, taking into account what material the core itself is made of.
There are several reasons for lengthening or building up a television cable. More often than others, there is such a reason as moving the TV from one room to another. Probably, during the initial installation of the television cable, the possibility of rearranging the interior in the room was not taken into account, and as a result, there was a shortage of cable length. In addition, pets like to gnaw on the cable in places where it is openly laid. Changing the cable along the entire length is a costly job, you can get out of this situation by extending the cable, having essential tool and material for television to work in the house.
How to lengthen a TV cable
How to connect a television cable with another piece of coaxial wire due to lack of standard length in the process of redevelopment in the room? This can be done in 4 ways:
- a regular coaxial cable extension, which is sold in different lengths, from 2.5 meters to two dozen, is not a cheap option when saving money is required during the repair process;
- buy special F sockets and use them to make a connection;
- use a "splitter" to connect the TV wire segments;
- use the soldering of the television wire.
If you do not have an additional piece of wire for TV, experts recommend making the right choice of coaxial cable in the store.
Important! When choosing a television cable, it must be remembered that in Russia RK 75 is considered standard (impedance 75 ohm), imported RG6 and RG59 cables are often used. Pay attention to the quality of the external insulation, it must be elastic, withstand repeated bending.
According to the manufacture of the inner braid, it can be rare or dense, one can judge the quality of the product. If it is rare, then you are offered a low-quality product, only a dense braid does not let through multiple TV signal interference. Ask the seller for a passport for the proposed product. It is necessary to pay attention to the signal attenuation parameters: in length and frequency. The lower these values, the better the cable.
Tools and materials
The connection of a television cable with another segment of a similar cable or its complete replacement occurs as a result of the causes of exposure to it (damage by impact, friction) in the process of repairing an apartment, when furniture is being rearranged, the initial laying of the TV cable becomes obsolete.
To extend the television cable, you must have:
- coaxial cable;
- F socket, adapter, "splitter";
- cable cutting tool, knife;
- crimping tool, pliers.
TV cable extension with F connectors
Considering the question of how to connect the antenna cable to each other using "F» connectors, it is necessary to carry out preparatory actions:
- Shop for one connection: two F connectors and one F connector, adapter;
- It is necessary to cut the wire of one and the second segment.
Important! Shop F connector, adapter sold different sizes, for the right choice you need to take a piece of TV cable, it is easier to select a connector according to the diameter of the cable.
We do the cable cutting, for this:
- applying a slight pressure, we cut through the main sheath of the television wire a few centimeters in length;
- wrap the cut shell in reverse side and delete it at the starting point of the notch;
- in the direction of the uncut part of the cable, the cable screen is folded (aluminum foil or braided braid, there is a screen made of steel braid);
Note! The cable screen, foil, is given strength when a thin layer of polyethylene is applied to its reverse side, which can give poor contact in the connector. It is impossible to remove a thin layer of contact-insulating material, you just need to return half of the unfolded screen to its original position. Then, when the connector is twisted, contact will occur along the outer part of the screen.
Important! If, by some chance, your cable diameter is smaller than the inner diameter of the connector, you must put several layers of insulating tape on the cable before returning the unfolded shield to achieve a tight connection.
- the next step after processing the cable screen will be the stripping of the main core, it is necessary to carefully remove the insulation, avoiding damage to the central core and the formation of notches on it from the cutting tool, which can lead to a decrease in its strength and rapid breakage where the notch is made.
After preparing two pieces of television wire (cutting the cable), F adapters are wound onto it. The plug must fit snugly on the cable, the central core is shortened so that no more than 5 millimeters of the main core comes out of the F plane of the connector, in other words, the adapter must be with a central core sticking out.
Cable extension with splitter
Studying the question of how to extend a television cable using a "splitter", consider what kind of device it is. A splitter is a small box that has a cable entry and several exits. The purpose of this device is to branch a single television antenna into several television receivers (TVs), or to connect receivers to a single television cable.
The requirement that applies to this type of cable extension is that the device is rigidly fixed on a plane (vertically or horizontally).
We prepare the TV cable by cutting both of its ends to be connected for the f plug, the same method as cutting for an adapter.
The wire that comes from the TV antenna must be connected to the input of the device, and the second piece of cable that comes from the side of the television receiver must be connected to the output of the splitter.
Building a television cable using a "splitter" implies a further possibility of branching a television signal around the apartment.
How to lengthen a TV wire by soldering
Connecting the antenna cable in case of breakage by soldering is the least expensive of all methods for extending antenna wires, you only need to have basic working skills, a soldering iron and solder. Using soldering, you can lengthen the cable without signal loss, in addition, you can connect cables of different diameters and with different wave impedance.
It is possible that you only have the right piece of television wire at hand, but its main core is stranded, and your cable has a monolithic central core, this issue is solved by soldering, you can also solder the screen from a braid of copper wires and aluminum foil. Procedure:
- We separate the outer sheath of television wires on both sides by six centimeters;
- We release from the screen by turning it in the opposite direction from the connection, the internal insulation of the main core. We carry out a shortening of up to two centimeters;
- The main core with the insulation of the extendable television wire is located in relation to each other at 45 degrees;
- We carry out tinning of the main cores, then we connect them with a thin tinned wire, solder the connection completely;
Note! Soldering should be accurate, without bumps and sharp solder growths.
- The place of the connected central wire is insulated with the existing insulation, the excess can be removed. It is recommended to cover the junction for strength with a coil of electrical tape;
- We return the screens of the spliced cables to their original position;
Important! If one of the screens is foil, take into account its non-contact inner part when connected to another screen. In this case, it is necessary to deploy it correctly so that there is full contact of one screen with another. For reliability, the screens can be soldered through a copper wire wrapped around the diameter of the cable.
- We restore the outer insulation of television wires.
TV antenna
When the television signal disappears, many owners of "blue screens" consider the antenna for the TV to be the culprit of this event. There are two troubleshooting solutions:
- turn to professional antenna tuners;
- repair the cable connection of the television wire.
Visual antenna malfunctions can be seen on the TV screen when:
- interference occurs,
- TV picture disappears
- the image breaks up into colored squares (satellite dish).
How to lay the cable correctly
For a television cable, after its lengthening, the question of its fastening always arises. Building a TV cable, according to many TV owners, is not difficult, but you must comply with the requirement, which experts attribute to an additional requirement in the laying process - the cable bending angle should not be sharp and not straight.
This is not allowed due to the design of the cable, as the main core can push through the inner insulation and dangerously approach the shielding braid or, in the worst case, touch it.
In the first case, there will be a noticeable weakening of the television signal, and if the main core touches the screen, it may disappear altogether. You must always adhere to the rule that says that the bend of the cable should not be less than 5 of its diameters.
V modern design apartments use skirting boards with cable channels, in which the television cable is laid. Television cords are also laid in plastic boxes, they have different overall dimensions, the cable fits into a P. shaped profile and snaps into place with a lid. In such boxes, it is allowed to lay Internet and communication cables together with television wires. The power wires of the electrical wiring are laid separately.
Experts in the described ways recommend how to repair a TV cable, and talk about the need for proper installation. When it is laid in the skirting channel, it is advisable to use a construction stapler to create a fastening for the inner wall of the skirting board.
Important! When making repairs in an apartment, always leave a supply of television wire, based on half the perimeter of the room, in case you are rearranging furniture interior items, a TV.
Note! Modern television receivers use, in addition to the antenna cable, additional adapters that connect to the TV wire to connect.
The quality of the image is also affected by the expiration date (workability of the TV cable), the reason for this is a qualitative change in television broadcasting stations, improved technologies. For this reason, in search of a malfunction or a bad television picture on the screen, one must start from the parameters of the laid TV wire.
Additional Information. In order to simplify the work of extending the television wire, experts recommend F connectors to choose threaded, without soldering. There are plugs with screen soldering, then, before soldering the screen, it must be half-finished and quickly soldered to the plug without melting the internal insulation.
In the event that you connect a TV extension cable to an antenna with an amplifier, you must use only the plug that is included with the antenna. It has a decoupling device, a power supply with connection.
- during the repair process, lay a television cable in each room of the apartment;
- try to install television wires with a hidden laying in a protected version: a corrugated sleeve or a plastic box;
- the cable is recommended to be used with a lower attenuation coefficient, but not less than 22 decibels;
- the distance between the power electrical wiring on one side and the antenna cable with Internet wires on the other side must be at least 150 millimeters.
When choosing a method for extending a television wire, one must understand that this violates its integrity and the quality of the resulting image on the television receiver always decreases - it is advisable to change the cable completely, from the splitter to the TV signal receiver. The connection using F connectors is considered the simplest and most affordable for cable extension, in addition, the reliability of the connection is maintained.
When choosing soldering in wire extensions, one must remember about the temperature heating of surfaces, carry out all operations without melting the insulation, check the reliability and quality of soldering, do not make poor-quality twists, it is better to solder the bandage on the central cores.
Video
Recently, providers are increasingly using to connect to the Internet. It's simple and reliable way connection to the World Wide Web. What is especially important, when using a local network, the user does not need to install any programs, drivers or additional equipment (like an ADSL modem).
Your Internet cable must be connected to the WAN port (Internet port) of the router, and the compressed twisted pair cable to the regular LAN port of the router and to your computer. After a simple router setup, you can use the Internet as before.
Method number 3. To lengthen the Internet cable, you can make a twist.
The easiest way. All you need is a piece of twisted pair cable of the length you need. It is not difficult to buy an uncompressed twisted pair cable.
After that, you need to cut your Internet cable in any convenient place and wedge in the purchased piece of twisted pair cable. To do this is quite simple. In order to connect a twisted pair cable, you do not need to solder anything. All that needs to be done is to strip the conductors and carefully twist the twisted pair by color. Naturally, everything needs to be insulated with high quality electrical tape. You can see how to twist a twisted pair cable in the video.
