Analog antenna connection diagram. Do-it-yourself over-the-air antenna for TV

High-quality antennas have always been difficult to obtain - the Soviet industry practically did not produce them, so people made them themselves from improvised materials. Today the situation has not changed much - in stores you can only find lightweight aluminum Chinese crafts, which do not show good results and rarely last more than a year. What to do if you like to watch TV, but there is no quality reception? The answer is simple -Given free time and a pair of skillful hands, anyone can handle this.

More recently, analogue television operated in Russia, but now almost the entire country has switched to digital broadcasting. Its main difference is that it operates in the decimeter range.

You can create a homemade antenna for the digital range at home

This was done for reasons of economy and safety - maintenance of transmitting antenna-feeder stations is virtually not required, their maintenance is reduced to a minimum, and the harm from contact with powerful transmitters for masters is minimal. But such stations have one serious drawback - low power. And if in a big city the signal can often be caught even on a piece of copper wire, then far from the transmitter, reception may be difficult. If you live outside the city, in remote areas or villages, you will have to assemble your own antenna and take it outside to catch the desired signal.

Attention:Signal problems can occur even in the city center. Decimeter waves are practically not dampened by other sources, but are reflected from thick reinforced concrete walls. In modern high-rise buildings there are many places where they are completely attenuated before reaching the TV receiver.

It's also worth noting that DVB-T2 (the new TV standard) offers a fairly constant but weak signal. When the noise level is one and a half to two units higher than normal, the TV reproduces the broadcast quite clearly, but as soon as the noise exceeds 2 dB, the signal disappears completely. Digital television is not sensitive to electromagnetic interference - it is not knocked down by a running refrigerator or microwave. But if a mismatch occurs anywhere in the system, the picture stops or falls apart. High qualitywill solve this problem, but in some cases it will have to be taken outside or onto the roof.

Basic requirements for antennas

The current television standards in the USSR do not fit modern realities - the protective and directional coefficients today have practically no effect on the signals. The airwaves in cities are clogged and contain a lot of dirt, so you shouldn’t pay attention to these coefficients. You are guaranteed to get interference on any antennas, so there is no need to reduce the efficiency factor and efficiency factor. It is better to improve the antenna gain so that it receives a wide range of airwaves and selects the desired stream, rather than focusing on a specific signal. The processor of the set-top box or TV itself will isolate the necessary signals and create a normal picture.

Classic Polish antenna with amplifier

So, Experienced engineers recommend building band antennas. They must be correctly calculated, receiving signals in a classical way, and not through engineering “optimizations” and traps. The ideal option is that the device fully complies with theoretical calculations and geometry. Also, the constructed antenna must be consistent with the cable at operating ranges without the use of matching devices. In this case, it is best to create a frequency response that is smooth and even, since phase distortions appear when the amplitude-frequency response dips or jumps.

Attention: analog Antennas with ferrite USS, which provide full reception of the old signal, practically do not work with DVB. What you need to build is a “digital” antenna.

In the article we will analyze modern types of antennas that work with new digital broadcasting.

Antenna types

DIY antennas for digital TV Can you assemble it at home? There are three most common options:

1. All-wave, or as radio amateurs call it, frequency-independent. It is assembled very quickly and does not require high knowledge or specialized tools. Well suited for the private sector, villages, dacha cooperatives - where the airwaves are not clogged with garbage, but not too far from the transmitter.
2. Log-periodic range. It has a simple design and receives the signal well at close and medium distances from the transmitter. Can be used as a remote antenna if the transmitter is located far away, or as a home wall antenna.
3. Z-antenna and its variations. Many radio amateurs are familiar with meter-long “zeshki” - they are quite large and require a lot of effort to assemble. But in the decimeter range they are quite compact and do their job well.

Nuances of construction

If you want to build a quality antenna, you must master the art of soldering. You cannot twist the contacts and guides - during operation they oxidize, the signal is lost, and the picture quality deteriorates. Therefore, all connections are soldered.

Such connections are unacceptable - be sure to solder them

You also need to deal with points of zero potential, where currents arise even in the absence of voltage. Experts recommend making them from a single piece of metal, without using welding at all. Even well-welded pieces can make noise at the boundary values, while a solid strip will “pull out” the signal.

Also when creating homemade antenna for digital TV you need to figure out how to solder cables. Today, copper is practically not used for braiding, since it is expensive and quickly oxidizes. Modern braiding is made of steel, which is not afraid of corrosion, but it is very difficult to solder. It should not be overheated or squeezed. For connections, use 36-40 watt soldering irons, flux and light solders. Dip the winding well into the flux and apply solder - it takes up perfectly with this method of application.

All-wave antenna

The all-wave antenna has a fairly simple design. It consists of triangles, copper wire and wooden slats. You can study the design in more detail in the picture - it does not represent anything supernatural.

The thickness of the wire can be any, the distance between adjacent wires is 25-30 mm, the distance between the plates is no more than 10 mm. The design can be improved by eliminating plates and using PCB. It needs to be given the appropriate shape or simply remove the copper foil in the shape of a triangle.

The remaining proportions are standard - the height of the device must match the width, the plates diverge at right angles. Zero potential is on the extreme line home antenna for tv , just at the intersection of the cable with the vertical guide. To avoid loss of quality, the cable must be tied to it with a tie - this is enough for coordination. Such an antenna, hung outside or directed at a window, receives virtually the entire frequency range, but has a slight dip, so you need to set the correct angle when fixing the antenna.

By the way, this design can be modernized using ordinary aluminum beer and cola cans. The principle of its operation is as follows: as the shoulder span increases, the working band expands, although other indicators remain within the original limits. The Nadenenko dipole, often used in military developments, works on the same principle. Aluminum cans are ideal in shape and size, creating vibrator arms in the decimeter range.

Two-can antenna for TV

You can create a simple can antenna by simply soldering two cans to a cable. This DIY indoor TV antenna Suitable for viewing channels at a short to medium distance from transmitters. There is no need to coordinate anything in this scheme, especially if the cable length is less than 2 meters.

You can complicate the design by assembling a full-fledged array from eight cans and using an amplifier from a regular Polish antenna. This design is perfect for hanging outdoors in areas remote from the transmitter. To enhance the signal, a metal mesh can be placed at the back of the structure.

Z antenna

Complex Z-antenna designs with multiple loops exist, but in most cases they are not needed. You can easily assemble a structure from ordinary copper wire 3 mm thick. If you don’t have one, then just buy a 3 mm single-core copper wire 120 mm long - this will be enough for your work. This design consists of two segments. We bend the wire according to this pattern:

1. The starting section is 14 centimeters long. Its edge is bent into a loop to connect with the last one (the loop is 1 cm, the total length of the first piece is 13 cm).
2. The second piece is bent at 90 degrees (it is better to bend it with pliers to maintain the angles). Its length is 14 cm.
3. The third piece is bent 90 degrees parallel to the first, length 14 cm.
4. The fourth and fifth pieces are 13 cm each, the bend does not reach the loop by 2 cm.
5. The sixth and seventh pieces are 14 cm each, bent at 90 degrees.
6. Eighth - returns to the loop, length 14, 1 cm goes to a new loop.

Next, you need to thoroughly strip the two loops and solder them. The opposite corner is also cleaned. The cable contacts are soldered to them - one is central, the other is braided. There is no difference which contact to solder to.. It is advisable to insulate the soldered areas; for this you can use sealants or hot-melt adhesive. The ends of the cable are soldered to the plug and also insulated with cambric.

You can assemble such an antenna in half an hour.

To avoid displacement of segments, the edges can be strengthened. To do this, take a regular plastic cap from a five-liter bottle, cut 4 slits in it so that the wire is recessed to the base. Cut the fifth hole for the cable. Then place the antenna in the cover (after checking the quality and reliability of the soldering), and fill it with hot-melt adhesive. The resulting design will be practically eternal - it is capable of receiving a stable signal at a distance of up to 10 km from the source.

So you already know What can be used instead of an antenna for a TV. In fact, the structures are much larger than those we described, but even these will be quite enough for you. If you live far from the signal source, then you will need amplifying antennas - you can get by with a classic “polka” with amplification. Well, if everything is bad with the airwaves, then use satellites.

Gradually, everyone is abandoning analogue television, giving preference to digital broadcasting. The largest providers are also restructuring to work with a newer, modern format. The era of analog TV is gradually coming to an end.

In order for previously installed home antenna devices to complete their resource, it is enough to connect a DVB-T receiver to the TV, as a result, digital signals will be received correctly.

You can make an antenna for digital television with your own hands, so there is absolutely no need to go to the store and spend extra money. You don’t need any special skills or equipment; you can create the necessary design using available tools.

Now we will answer in detail the question of how to make an antenna for digital TV. We will carefully analyze the process, select the optimal material, and also carry out all the necessary calculations. Nevertheless, first we will deal with the theoretical nuances.

Regardless of the signal format, it is transmitted from the tower emitters. Reception of the wave channel is provided by the antenna device. To receive a digital signal, you will need a sinusoidal device with the highest possible frequency, which is measured in MHz.

When an electromagnetic wave passes through the surface of the receiving beams of the antenna, a V-voltage is induced in it. Each wave contributes to the formation of a different potential, marking it with its characteristic sign.

Under the influence of an induced voltage, an electrical current flows in a closed receiving circuit with resistance R. It is gradually growing. Processing is carried out by the TV circuit, the picture is displayed on the monitor, and the sound is broadcast through the speakers.

You won't be able to connect digital broadcasting using a regular indoor antenna. Firstly, you will need an intermediate link that will provide decoding of information - a DVB-T receiver. Secondly, you should use a UHF antenna or Turkin antenna for DVB.

Antenna figure eight

How to make such an antenna with your own hands? First you need to prepare the material. Then carry out the appropriate calculations. At the final stage, assemble the structure and connect it to the TV. Nothing complicated. Every user can cope with this task.

Materials for antenna assembly

Making an antenna for digital television is not difficult. The list of materials used will vary depending on the type of antenna device. For example, if you wish, you can make it even from the most ordinary beer cans.

To produce a good and simple TV antenna for digital channels, you will need copper or aluminum wire with a thickness of 2 to 5 millimeters. In general, it will take only 1 hour to create such a design. You also need to use:

• handset;
• corner;
• copper or aluminum strip.

You will definitely need a tool that will allow you to bend the frames to the required shape. To bend the wire, use a hammer after securing the material in a vice.

You can make your own antenna not only from wire, but also from cable (coaxial). Choose a plug that matches the connector on your TV. Naturally, you also need to fix the structure; the bracket is made from scrap materials.

As for the cable, it must be taken with a resistance in the range of 50-75 Ohms. Particular attention should be paid to insulation if the device will be placed outdoors.

The specifics of fastening are determined in accordance with where the structure will be located. For example, residents of multi-storey buildings will be able to make their own antenna for digital TV and hang it like a home antenna, i.e. on the curtains. To do this, you will need large pins that will serve as a fastening element.

However, if you want to place the created device on the roof, then you need to make a bracket. To do this you will need a file, a soldering iron and a needle file.

We've sorted out the spiral antenna, but you can also make another design - a double square. It is made from copper, brass or aluminum tubes. Wire 3-6 mm thick is less commonly used. In general, the choice of material is determined in accordance with the MF band and the number of channels.

Double square - two frames that are connected by an upper and lower arrow. The small frame is a vibrator, and the large one is a reflector. To achieve maximum gain, increase the number of frames to three. The third square is the director.

The mast must be made of wood. At least its upper part. Please note that it should start at a distance of one and a half meters from the level of the frames.

So, step by step instructions:

1. Take the coaxial cable and strip it from both ends.
2. One end will be attached to the antenna, the wire should stick out 2 cm.
3. The screen and braid are twisted into a bundle.
4. We get two conductors.
5. Solder the plug to the second edge of the cable. A distance of 1 cm is sufficient. If you use a crimp metal plug, you can skip further steps.
6. Tin and make 2 more conductors.
7. Wipe the solder joints of the plug with alcohol.
8. Place the plastic part of the plug onto the wire.
9. A single core is soldered to the central input of the plug.
10. A multi-core harness is soldered to the side entrance of the plug.
11. Crimp the grip around the insulation.
12. Screw on the plastic tip or fill it with glue.

Calculation

To set up digital television reception, it is absolutely not necessary to calculate the wavelength. Just try to make a broadband design. As a result, you will be able to receive the maximum number of signals. To achieve this result, add additional elements to the T2 antenna with your own hands. It is about them that will be discussed further.

The calculation of an antenna for digital TV is based on determining the signal transmission wave. Divide this value by 4 to get the required side of the square. To determine the distance between the two components of the device, make the outer sides of the rhombuses a little longer, therefore, the inner sides, on the contrary, should be shorter.

If you don’t want to calculate the dimensions of the antenna yourself, use ready-made drawings:

• The inner side of the rectangle is 13 cm.
• The outer side of the rectangle is 14 cm.

The difference is the distance between the squares; by the way, they should not be connected under any circumstances; the extreme sections provide the necessary maneuver for folding the loop. It is to this that the coaxial antenna wire is attached.

Antenna manufacturing

If we calculate the entire length, we will end up with a value of 112 centimeters. Cut the wire or any other material that you plan to use, take a ruler and pliers, and begin to bend the structure. The angle should be 90 degrees. If the sides do not match in length, it’s okay, a small error is acceptable.

Initial data for making an antenna for digital TV:

1. The first element is 13 centimeters and 1 centimeter per loop, by the way, it can be bent right away.
2. Two elements of 14 centimeters each.
3. Two are 13 centimeters each, but there must be a turn in the opposite direction; here a bend is created to another square.
4. Two more sections of 14 centimeters each.
5. The last one is identical to the first one.

The antenna frame for digital TV is ready. If you did everything correctly, then between the 2 halves there is a gap of several centimeters in the middle. Naturally, there may be minor differences. After this, the loops and bend areas must be cleaned until no metal is visible. Processing is carried out with fine-grain sandpaper. We connect the loops and crimp them with pliers to fix their position.

The design itself is ready, but in order for the antenna made for T2 to function correctly, the cable must be processed. We start with double-sided stripping of the wire. One edge will connect directly to the antenna. You need to strip the cable in this area so that the cord sticks out about two centimeters. If you get a little more, you can simply cut off the rest later.

We twist the screen and cable braid into a bundle, as a result we get 2 conductors - a central core and a twisted element of several braided wires. All this needs to be tinned.

Using a soldering station, solder the plug to the second edge of the cable. A centimeter length is quite enough, small errors are acceptable. According to the principle described earlier, you need to make a pair of conductors and tin them.

The plug is placed in those areas where soldering will be carried out in the future; first wipe it with alcohol or a special solvent. Then, using a file or emery, we clean it. Place the plastic plug element onto the cord. Now start soldering. Attach a core to the central entrance, and a multi-core braid to the side entrance. Crimp the grip around the insulation.

Screw on the plastic tip; some experts even fill it with glue or a special sealant to strengthen the fixation. While the fixing base is still wet, quickly assemble the plug by screwing on the plastic part, and then remove excess glue or sealant. As a result, it will be possible to maximize the service life of the plug. The homemade product has been created, it's time to connect it.

Connection

Connect the cable and the frame of the homemade DVB T2 antenna. It is absolutely not necessary to bind to any specific channel, so solder the cord in the middle. As a result, a broadband antenna will be created that will receive the maximum number of TV channels. Solder the second split end of the wire to the other two sides again in the middle, previously you stripped them and also tinned them. To extend the reception range, do not solder the cable from the bottom.

When the structure is assembled, it must be checked. We connect the tuner and turn on the TV. If digital television receives, for example, you managed to set up 20 channels, you need to finally complete the assembly. Fill the areas where soldering was carried out with sealant.

However, if there are very few active channels or there is some interference, then you need to find a place where there will be an optimal signal. If there are no positive changes, change the antenna cable. To simplify the testing process as much as possible, use telephone wire, it is quite cheap. Solder the plug and frames to it. If the signal quality has improved, then the problem is really in the cable. A digital set-top box will broadcast channels even if noodles are used, but as practice shows, its service life is extremely limited.

To protect the cable connection areas and antenna frames from precipitation and other atmospheric influences, wrap the solder joints with ordinary insulating tape. However, this is not a permanent solution. A more effective option is to install heat-shrinkable tubing on the soldering areas, which will ensure proper insulation.

An alternative option with maximum reliability is glue or sealant. The fact is that these substances do not conduct current. Be sure to make a housing for the antenna; an ordinary plastic cover will do for this. If necessary, make indentations so that the frame “settles down”; do not forget about the cord outlet. Pour in the sealant and wait for it to dry. Everything is ready, we connect the equipment and enjoy digital TV.

Double or triple square for weaker signal

The TV antenna is used in villages, dachas and in areas that are located on the border of the coverage area of ​​television towers. The device allows you to receive even a very weak signal. If you do everything correctly, the power of the TV signal will increase noticeably.

A double or triple square has only one drawback - you need to direct the structure to the signal source with maximum accuracy. Therefore, if you do not know where exactly the tower is, difficulties will arise.

The number of frames determines the quality of the signal. Therefore, if you are outside the coverage area, you don’t have to limit yourself to 2-3 frames, you can do 5. Do not open the antenna with varnish or paint it. This negatively affects the quality of signal reception.

What are the strengths of the design? First of all, the quality of reception. Even if you are far from the repeater, the signal will be clear. However, it will be possible to achieve a positive result only if the user correctly determines the dimensions of the frames and matching device.

Materials

To make an antenna for digital TV yourself, you need to prepare materials that will later be used to make the structure. The antenna is made from metal tubes or wire:

• 1-5 meter channel - copper, brass, aluminum tubes 10-20 millimeters thick;
• 6-12 meter channel channel - copper, brass, aluminum tubes 8-15 millimeters thick;
• decimeter range - copper, brass wire with a thickness of 3 to 5 millimeters.

Double square - 2 frames, which are connected by a pair of arrows (upper and lower). The smallest frame is the so-called vibrator, and the largest is the reflector. A device with three frames will have a higher TV signal gain. The third square is usually called the director.

Instructions for creating a T2 antenna:

1. The top arrow (made of metal) must connect the middles of all frames.
2. The lower boom is made using electrically insulating materials: wood, textolite.
3. Arrange all the frames so that their centers are on the same line.
4. The direct line should be sent to the repeater.
5. The vibrator must be open circuit. Its edges are fixed to a PCB plate.
6. If you made frames from metal tubes, then the edges should be flattened and holes should be made in them to fix the lower boom.
7. The mast must be made of wood, or at least its upper part.

Size calculation

The calculation of an antenna for digital TV will directly depend on the range - meter or decimeter. The dimensions of the antenna with three frames are characterized by a large distance between the ends of the vibrator. You need to leave more distance - 50 millimeters.

The tables show the dimensions of two-element loop antennas. Meter range:

Channel numbers

UHF:

Size of three-element antennas. Meter range:

Channel numbers

UHF:

Vibrator connection

Considering the fact that the frame is symmetrical, and the connection is made to an asymmetrical antenna cable, you need to use a matching device. The best option is a short-circuited loop. It is made from pieces of coaxial cable. The left segment is a feeder, and the right one is usually called a train. In the place where the feeder and cable will be connected, we fix the cable, which is subsequently connected to the TV.

What should be the length of these segments? The calculation is carried out in accordance with the wavelength of the received TV signal.

At one end you need to cut the cable, removing the aluminum screen. The braid must be twisted into a tight rope. We cut off the central conductor down to the insulation. The feeder also needs to be cut. Remove the screen, made of aluminum, and then twist the braid. However, we leave the central conductor.

The further assembly process is carried out as follows:

1. Solder the cable braid and feeder conductor to the left edge of the vibrator.
2. The feeder braid needs to be soldered to the right edge of the vibrator.
3. A metal jumper connects the cable braid to the lower end of the feeder. These elements can also be fastened with metal wire. The main thing is that there is proper contact with the braid.
4. The braid determines not only the electrical connection, but also the distance between the sections of the matching device.
5. If there is no metal wire and jumper, then twist the braided lower part of the cable into a bundle, after first removing the screen and removing the insulation. To ensure proper contact, you need to solder the wire harnesses using solder that melts easily.
6. The cable pieces should be parallel to each other. Distance – 50 millimeters (small error is acceptable). To secure the distance, special clamps made of electrical insulating materials are used. You can also attach the matching device to the textolite plate.
7. The cable that is inserted into the TV socket should be soldered to the feeder (to the bottom). The braids are connected to each other, like the central conductors.

To reduce the number of connecting elements, the feeder and cable connected to the TV can be made one. Remove the insulation where the feeder ends. This is done in order to install the jumper.

A matching device is a mandatory element that helps prevent interference. It will be especially useful if the signal transmitter (TV tower) is located at a great distance.

Butterfly antenna

The TV antenna can also be made in the shape of a butterfly. Such a device will be in no way inferior to a decimeter antenna. There is absolutely no need to do everything from scratch. It is much easier to convert a regular grille into a digital one for T2 tuning. To make it yourself, follow these simple instructions:

1. Take a small board that will become the basis of the future antenna.
2. Cut 8 wires, each 37.5 centimeters long.
3. The middle of all wires must be stripped about 2 centimeters.
4. Bend the wires until they form a V shape. The distance between the wires should be 7.5 centimeters.
5. Cut 2 more wires, each of them should be 22 centimeters long.
6. Strip the wires where they will be attached to the antenna base (board).
7. Place the screws along the base of the antenna, and then connect the V-shaped elements with two wires.
8. Connect the antenna and cable using the special plug.

Every user can create such a device. You don't have to buy anything. The antenna is made from improvised materials.

From coaxial cable

You can actually make a TV antenna manually using a cable:

1. Cut approximately 530 millimeters of cable.
2. Strip the cable on both sides, fastening the braid into a bundle and exposing the central core.
3. Twist the cable into a ring or diamond shape and secure it with tape to the plywood. The distance between the cable rings should be 2 centimeters.
4. Cut a piece of coaxial cable - 175 centimeters. Make a horseshoe-shaped matching device out of it. To do this, you need to strip the wire from both ends, as you did in the process of making rings.
5. Prepare the antenna cable. The plug is put on one side, and the other is stripped. It is necessary to remove the central core and braid.
6. Align the ring and matching device with the antenna cable.

As a base, you can use not only plywood, but also plexiglass.

Antenna made from tin cans

To make a simple TV antenna for digital channels you will need a cable, a couple of aluminum or tin cans, and a small plastic pipe. A wooden plank can also be used as a base.

Remember that the antenna can only be created from aluminum or tin cans. Plastic or glass will not work. The main requirement is smooth, not ribbed, internal walls. Anyone can install such a device with their own hands in just a few minutes.

1. Rinse well and then dry the jars.
2. The end of the coaxial cable must be cut.
3. Remove the insulation from the center core.
4. Twist the braid.
5. Once you have 2 wires, attach them to the jars.
6. If you have a soldering iron on hand, solder the conductors. They can also be secured with self-tapping screws with flat heads. Twist a loop at the ends of the conductors, and insert a self-tapping screw with a washer into it, then secure it to the can.
7. Pre-clean the metal, you need to take fine-grained sandpaper and remove plaque, as well as paint.
8. Attach the jars to a plastic pipe or wooden strip.
9. The distance is calculated individually.
10. Connect the cable to the TV and try tuning the channels.

This is an emergency solution to the problem. Don’t be under any illusions; at best, several channels will be available in good quality. The final result directly depends on how far away the TV tower is, how “clean” the corridor is, and also how well the antenna is made.

Now you know how to make an antenna for tuning digital channels using improvised means.

Note.

Landscaping of a suburban area involves increasing the living comfort of summer residents. One of the constant attributes of passive entertainment is the television.

Far from the city, problems often arise with the signal and broadcast quality. A self-made antenna for a dacha allows you to solve this issue by spending a minimum of money and time. There are a lot of options for homemade devices, their choice is determined by the distance from the TV tower and the type of signal.

In this material we will look at assembling the simplest homemade models - the article provides detailed manufacturing instructions with diagrams and drawings. There is also a list of materials and tools necessary for the work.

When starting to make a homemade device, you need to have an idea of ​​the possible design options and the rules for their assembly.

The entire variety of television antennas is usually divided into several types:

1. All-wave. A frequency-independent antenna is the cheapest and easiest to manufacture. The base is a metal frame, and tin containers or beer cans are used as receivers. The design does not have high performance parameters, but it is quite suitable for a summer residence if the broadcast tower is located nearby.
2. Log-periodic. The principle of operation is comparable to a fishing net that sorts prey during catching. The device is easy to manufacture, and its parameters exceed those of all-wave models. The antennas are consistent with the feeder in any range.
3. decimeter. Designs that function well regardless of reception conditions. Various designs are possible: zigzag, diamonds, circle, etc.

The antenna parts through which the useful signal currents run are joined or soldered. However, when placing the device on the roof of a house, such contacts will be corroded over time by corrosion.

In addition to this norm, when creating an antenna for a summer residence with your own hands, it is advisable to adhere to the following rules:

1. The central core and braid are made of inexpensive alloys that are resistant to corrosion processes. However, they are difficult to solder - work is carried out with extreme caution so as not to burn the wire.
2. To connect elements, you need to use a 40 W soldering iron, flux paste, and low-melting solder.
3. It is not advisable to use aluminum wire to create structural parts. The material quickly oxidizes, losing its ability to conduct a signal. The best option is copper, an affordable alternative is brass.

The receiving area of ​​the catcher must be large. In order to increase it, metal rods can be symmetrically attached to the frame that filters out ethereal noise.

Connecting the simplest signal amplifier to the antenna will significantly improve the quality of broadcast transmission. Factory products are already equipped with this element

The tandem homemade antenna will provide the necessary receiving power. It is enough to take the structure onto the roof and install it in the direction of a nearby television tower.

Instructions for assembling the best antennas

You can assemble many interesting and effective antennas with your own hands. Let's look at detailed instructions for making the best and easiest to make models.

Homemade #1 - simple TV antenna

If the repeater is located within 30 km from the dacha, then the most common design, assembled from two tubes and a cable, will do. The wire is connected to the corresponding TV input socket.

Layout and selection of materials

A typical device for a primitive country antenna is shown in the figure below. It can be seen that two tubes of the same length are joined on a plate, which in turn is fixed to the mast.

The first thing you need to do is find out the broadcast frequency of the local TV tower - the length of the pipes depends on the parameter.

Broadcast band range – 50-230 MHz. Each channel requires its own length of antenna “whiskers”.

Pipes made of duralumin, steel, and brass are suitable for making the antenna. Their diameter can vary between 8-24 mm, most often they take 16 mm. The main condition is that the sections must be equivalent, prepared from pipes with the same properties.

Necessary materials:

• metal pipe– the cut is 6 cm shorter than the length determined from the table values;
• wire with a resistance of 75 ohms, the required length is the distance from the TV to the antenna plus 2 m for sagging and matching loop;
• thick electrical insulating getinax– thickness from 4 mm;
• metal strips, on the plate;
• antenna mast– this can be a corner; if the height is small, it is permissible to use a wooden block.

For work, it is advisable to stock up on a soldering iron, solder, and flux. It is recommended to solder the connections of the central conductors - this will extend the life of the device and improve image quality.

To protect against oxidation, the joint areas must be filled with silicone or epoxy resin. An affordable, but not reliable way is to wrap it with electrical tape.

Assembly and configuration of the invention

First, cut the required size of the pipe and saw it into two equal parts. You can use metal cutters.

The distance between the inner ends of the tubes is 6 cm, between the outer ends - the distance indicated in the table.

Subsequent progress of work:

1. Secure the antenna whiskers to the holder with clamps, and fix the getinax plate itself on the mast.
2. Connect the pipes through a matching device - cable loop type RK-1,3,4. The element parameters are displayed in the right column of the table, the manufacturing principle is shown in the antenna design diagram.
3. Solder the central cores to the ends of the tubes, connect the braid with a piece of a similar conductor.
4. Connect the central conductors of the ends of the matching loop to the television cable. Connect the braid with copper wire.
5. Fix the loop and the downward wire on the rod.
6. Raise the mast to the roof of the country house and adjust the antenna.

Two people are needed to determine the optimal position of the device. The first rotates the antenna on the street, and the second monitors the change in the image on TV.

Having detected good signal quality, the structure is fixed in the selected position.

Homemade #2 - loop antenna made from pipe

The module is a little more difficult to create, but it expands the reception radius to 40 km. The main difficulty lies in the need to bend the pipe.

The braid and foil must be twisted into a bundle. You should get two conductors: a central monocore and a twist. Both elements must be tinned. The wire should stick out 2 cm, cut off the excess

Solder the plug on the other side of the cable. The wire must be cleaned to 1 cm, the conductors must be formed and tinned.

In areas where soldering is performed, clean the plug with sandpaper and wipe with alcohol. Solder a monocore to the central output, and a twist to the side output. Crimp the grip around the insulation, screw on the plastic tip, or alternatively, fill it with non-conductive sealant. Before the composition dries, assemble the plug.

The order of connecting elements

The final stage of assembly is joining the frame and cable. If there is no connection to a specific channel, then it is better to do the soldering at the midpoint to expand signal capture.

The cut end of the cable is connected to the two sides of the square in the center. Before final fixation, you can check the performance of the antenna. If everything is normal, then seal the soldering area.

Holes are made in the mini-container for the square elements, a frame with a wire is placed and filled with a sealing compound.

Homemade #4 - “double square” antenna

The narrowband design will solve the problem of a weak signal or clogging of the broadcast with a stronger broadcast. The antenna is also suitable for receiving digital television. The main condition for operation is a clear orientation towards the signal distributor.

Device diagram and dimensions

Structurally, the TV antenna is presented in the form of two frames connected at the top and bottom by arrows. The large square is a reflector, the smaller one is a vibrator.

The upper boom is made of metal, and the lower one is made of getinax, textolite or other insulating material.

Requirements for the TV antenna device:

• the centers of the squares must be on the same line, this straight line faces the transmitter;
• the smaller frame has an open contour, the ends are fixed to the textolite plate;
• The upper part of the mast for the antennas is made of wood.

The parameters for the manufacture of two-element frame television antennas are taken from the table. The dimensions of the working elements depend on the type of waves: decimeter or meter.

Explanations for the table: B – side length of the smaller square, P – value of the larger frame, A – distance between two elements, W – loop in a short-circuited bridge

In a three-frame design, the distance between the ends of the middle frame is increased to 5 cm.

Assembly and connection

To connect the frame to the antenna cable, you will need a balun short-circuited cable. The device is constructed from sections of antenna wire.

The right element is a cable, the shortened left one is a feeder. A television cable is attached to the place where they are connected. The length of the segments is determined from the table, taking into account the wavelength of the signal.

The same actions are performed with the feeder, leaving the cable core.

Further sequence of work:

1. Solder the central core of the feeder and the cable braid to the left end of the vibrator.
2. Attach the feeder twist to the right end of the active frame.
3. Connect the bottom of the cable to the feeder braid with a metal jumper. Solder the harnesses with low-melting solder.
4. The cable sections must run parallel, the distance is 5 cm. To fix the distance, dielectric material is used. The matching device is mounted on a textolite plate.
5. Solder the television cable to the bottom of the feeder, joining the corresponding elements - braid to braid, rod to rod.

The use of a matching device reduces the likelihood of interference and eliminates the double image effect. You can’t do without it if you are at a significant distance from the transmitter.

Homemade #5 - TV antenna made from tin cans

The original design of the antenna using improvised means significantly improves the signal quality. This option is suitable for a dacha in the suburbs, not far from a TV tower.

To create a primitive device you will need: 2 beer cans of 0.5 or 0.75 liters, self-tapping screws, a 3-5 m television cable, a screwdriver, a soldering iron, tin, a wooden pin or hanger, and electrical tape.

Subsequent actions can be divided into several stages.

Preparing the cable and making contacts

When preparing the cable, step back 10 cm. Divide the cable into two conductors - the central core and the braided twist. At the other end of the cable you need to install a regular plug.

When making contacts, the twisted cable screen is fastened to one can, and the copper core to the other. Self-tapping screws are suitable for fixing.

Assembling a homemade structure

During assembly, it is necessary to make a supporting structure for the signal receiver. In the simplest version, you can use ordinary clothes hangers. A wooden stick will also work.

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If you comply with a number of standards, assembly and connection technologies, you will be able to make an effective device to replace the standard TV antenna.

Do you have a homemade antenna installed at your dacha? Please share with other users a unique photo of your homemade product, tell us what materials you needed and how much time it took you to assemble.

Or maybe you assembled a TV antenna according to one of the schemes discussed in this material? Tell us about your experience using this model, add photos in the comments section.

Content:

It’s not worth talking about how firmly television has entered our lives; this is already well known. But sometimes it can happen that a television antenna becomes unusable. And it’s good if the store where you can buy a new one is within walking distance. What to do if this happened in a country house or in a village where it is simply impossible to find a similar outlet nearby.

But your favorite movie or show will not wait until there is an opportunity to get to the place where it is possible to purchase a new device. That’s when it’s worth thinking about the possibility of making a TV antenna with your own hands to be able to watch TV shows.

In fact, such work is not too complicated or requires any specific skills and knowledge (although a small amount of them will still be useful) - making a TV antenna is quite simple.

Now let’s try to understand what is needed to make a television antenna, what materials and tools will be useful, and what type of device can be assembled at home.

Types of antennas

Making an antenna with your own hands is quite simple. Such a homemade antenna for a TV will be quite good at receiving a television signal. The antenna design can be absolutely anything - from the simplest one, which will pick up 2-3 channels, to a complex HD or even satellite antenna. Or perhaps it will be a homemade antenna for digital television or a decimeter antenna. But it makes sense to start with something simpler.

Of course, there is an option in which you can make your own TV antenna using only a single-core copper wire. In this case, having stripped both ends, one needs to be attached to the central part of the TV socket, and the other must be attached to the battery. But such a receiving device will not provide more than one or two channels, and therefore it is not worth focusing on it, although such a DIY indoor antenna also has a right to exist.

Aluminum cans

How to make an antenna for a TV from a similar material? Yes, very simple. This simplest option allows you to view several channels in good quality, of course, subject to proper assembly and installation.

Such material will probably be found in almost any home - it could be aluminum beer or soda cans. Of course, as a last resort, you can use cans, but the quality of the signal will greatly decrease. The best option for making television antennas with your own hands is an aluminum container with a volume of 1 liter, and the minimum is 0.5 liters.

For production you will need:

• A cable of sufficient length to reach from the TV to the antenna location;
• Two (minimum) aluminum cans;
• TV plug;
• Two self-tapping screws with press washers;
• Electrical tape;
• Wooden clothes hanger. Instead, it is possible to use a wooden beam or plank, at least 25–30 cm long;
• Tools (screwdriver, pliers, knife);
• Also, if available, a soldering iron will be useful.

Having dealt with the material and auxiliary parts, let's proceed to the main explanation of how to make a television antenna. First, you need to strip the end of the cable by about 15 cm, twisting the screen wires into one core. In the same way, remove the central core from the shell, which must be secured to the upper parts of the cans using self-tapping screws - the screen on one, and the central core on the other. For tighter contact, you can additionally solder the connections. The other end of the cable should end in a plug.

Aluminum cans must be secured to a wooden base (on a beam or hanger), at a distance of approximately 74-76 mm. In addition, it makes sense to make them move, since by moving them closer and further away from each other, you can adjust the antenna for clearer signal reception. By installing a similar device on the TV, you can adjust this parameter. It is important that the metal parts are strictly at the same level. Otherwise, the device will not work correctly.

Well, making a simple antenna with your own hands is finished. Now we should consider more complex options.

Steel wire

For the manufacture of this device, wire rod is suitable - steel wire with a cross-section of 6 square meters. mm. You will also need to have:

• Amplifier (it can be removed from the old TV antenna). You can make an antenna amplifier with your own hands, but this will require additional parts;
• Two pieces of wire rod, about 2 m long;
• A piece of plywood, size 20x20cm;
• Electric drill;
• Small bolts;
• Hammer;
• Metal pipe;
• Cable of the required length.

Now let’s figure out how to make a homemade antenna from such a simple material as steel. First you need to bend diamonds from wire rod with a side length of 45 cm. The excess can be chopped off. After this, using a hammer, you need to slightly flatten the wire so that you can, after drilling, secure the resulting diamonds to the plywood base using bolts. An amplifier also joins them. After this, all that remains is to fix the device on the pipe and, raising it to the required height, adjust the direction to the place of the best signal.

Such devices, during normal operation of the amplifier, provide a completely acceptable image and at the same time a fairly wide range of channels. The main thing is the correct setting. By the way, if the resulting picture is not satisfactory, you can connect an amplifier with a separate power supply, but, of course, you will have to purchase it in advance.

It is advisable to coat all resulting parts of the device with paint to avoid corrosion and oxidation.

HDTV at home

This option is suitable only for those who have a stable signal that is received directly from the apartment. The fact is that the basis for this device is cardboard, and if it gets wet, if such an antenna is placed outside, it will simply fall apart. In addition, for its manufacture it is necessary to have a matching transformer from 300 to 75 Ohms, and such devices are unlikely to be found on the farm. This means that it must be purchased in advance.

You also need a powerful magnet in the shape of a ring, which may also not be available at home, and therefore, probably, you should not dwell on such an option now, since it is in no way suitable as a method for giving in the event of a sudden failure of the old signal receiving device. Although such a DIY digital antenna receives an excellent signal, an easier-to-manufacture option can also serve the same purpose.

Butterfly or antenna made of copper wire

Such a TV antenna is called all-wave, which means that, with a working amplifier from the old antenna, it will allow you to receive more channels than previous options, and, moreover, in better quality. No complex devices are required to manufacture such a device, and therefore this option is perfect for unplanned production.

For production you need:

• Boards or a piece of plywood no thinner than 5 mm, size 55x7 cm;
• Copper wire, cross section 4 or 6 sq. mm;
• KG cable, no more than a meter;
• Drill, soldering iron and plug.

It makes sense to understand in more detail how to make an antenna for digital TV from these materials. It is necessary to drill small holes in the wooden base, according to the picture above. Cut copper wire into 8 pieces, 37.5 cm long, in the center of which remove the insulation to a length of 2.5–3 cm.

Bend the wire pieces into a V-shape with the expectation that there should be a distance of 7.5 cm between the ends, as this is optimal for this type of antenna. After the work has been done, it is necessary to secure all the parts on a wooden or plywood base using self-tapping screws, connect them together with the cores of the KG cable, solder the parts to each other and place the manufactured antenna in the right place. You can use both an indoor antenna and as an outdoor antenna. The result should be the device shown in the photo below.

Such an antenna, if you connect an amplifier to it, will delight you with an excellent picture and a variety of received channels. This type of antenna is called a “butterfly”.

Satellite dish

Now it makes sense to understand how to make an antenna with your own hands from an ordinary umbrella. Such a device is suitable for those whose housing is located no further than 30 km from a TV tower or any other repeater. Well, if there is a high-rise building nearby or something similar on which the product can be installed, this will be absolutely ideal.

To make it, in addition to the amplifier unit and the required amount of cable, you will need an old umbrella and aluminum foil, as well as a can of soda water or beer.

You should start by covering the inside of the umbrella in the open position or covering it with foil. The umbrella handle itself is not needed, and therefore it can simply be broken off. The receiver must be located in the center. Of course, there are no such devices in the household, and therefore an ordinary television cable, stripped to the central core of 3.5–4 cm, connected through an amplifier from an old antenna, will work perfectly in this capacity. From an aluminum can, cut out a part in the shape of an oval, with a hole for the cable in the middle and pass it there, solder it. As a result, you will get a signal receiver from an improvised plate. The main thing is that the manufactured receiver does not come into contact with the metal parts of the umbrella. For insulation, the use of plasticine is quite acceptable.

By the way, as amplification for the antenna, it is quite possible to use a UHF unit, without which almost no TV could do before. If you install such a unit on any television antenna, made with your own hands from scrap materials, the device will be many times more powerful than factory devices.

After all the work has been done, all that remains is to install the dish, point it towards the repeater and adjust the direction, turning it to the sides until a clear signal appears.

general information

In general, there are a great many options for making TV antennas with your own hands and at home. After all, what is the advantage of such devices? Firstly, this is a minimum of costs, and at the same time, if everything is done correctly, the device is in no way inferior to factory products. And secondly, this is experience that can always come in handy. After all, it is unknown when and what kind of situation may occur, and therefore such knowledge will definitely not be superfluous.

Of course, the household does not always have the necessary devices for such work, and therefore, in places where it is not possible to buy them at any time, it is better to take them and put them in reserve.

Well, for those who can say that it is easier to buy such devices for receiving a TV signal, you can object. After all, when making any device, a person experiences greater satisfaction not from the fact that the device works, but from the realization that this device was made with his own hands.

Besides, if a TV antenna made at home works great and is not inferior in image quality to a store-bought one, then why overpay? These funds can be spent on something more necessary or necessary.

Therefore, homemade antennas made at home have a right to exist.

In summer cottages, a television signal can rarely be received without amplification: it is too far from the repeater, the terrain is usually non-uniform, and trees get in the way. For normal “picture” quality, antennas are needed. Anyone who knows at least a little how to handle a soldering iron can make an antenna for their dacha with their own hands. Outside the city, aesthetics are not given so much importance; the main thing is quality of reception, simple design, low cost and reliability. You can experiment and do it yourself.

Simple TV antenna

If the repeater is located within 30 km from your dacha, you can make the simplest receiving part in design. These are two identical tubes connected to each other by a cable. The cable output is fed to the corresponding TV input.

The design of an antenna for a TV in the country: it’s very easy to do it yourself (to enlarge the size of the picture, click on it with the left mouse button)

What is needed to make this TV antenna?

First of all, you need to find out what frequency the nearest TV tower is broadcasting on. The length of the “whiskers” depends on the frequency. The broadcast band is in the range of 50-230 MHz. It is divided into 12 channels. Each requires its own length of tubes. A list of terrestrial television channels, their frequencies and parameters of a television antenna for self-production is given in the table.

Channel number	Channel frequency	Vibrator length - from one end to the other end of the tubes, cm	Cable length for matching device, L1/L2 cm
1	50 MHz	271-276 cm	286 cm / 95 cm
2	59.25 MHz	229-234 cm	242 cm / 80 cm
3	77.25 MHz	177-179 cm	187 cm / 62 cm
4	85.25 MHz	162-163 cm	170 cm / 57 cm
5	93.25 MHz	147-150 cm	166 cm / 52 cm
6	175.25 MHz	85 cm	84 cm / 28 cm
7	183.25 MHz	80 cm	80 cm / 27 cm
8	191.25 MHz	77 cm	77 cm / 26 cm
9	199.25 MHz	75 cm	74 cm / 25 cm
10	207.25 MHz	71 cm	71 cm / 24 cm
11	215.25 MHz	69 cm	68 cm / 23 cm
12	223.25 MHz	66 cm	66 cm / 22 cm

So, in order to make a TV antenna with your own hands, you need the following materials:

It would be nice to have a soldering iron, flux for soldering copper and solder on hand: it is advisable to solder all connections of the central conductors: the image quality will be better and the antenna will work longer. The soldering areas then need to be protected from oxidation: it is best to fill it with a layer of silicone, or you can use epoxy resin, etc. As a last resort, seal it with electrical tape, but this is very unreliable.

Even a child can make this homemade antenna for a TV, even at home. You need to cut the tube to the length that corresponds to the broadcast frequency of a nearby repeater, then saw it exactly in half.

Assembly order

The resulting tubes are flattened on one side. With these ends they are attached to a holder - a piece of getinax or textolite 4-6 mm thick (see picture). The tubes are placed at a distance of 6-7 cm from each other, their far ends should be at the distance indicated in the table. They are secured to the holder with clamps; they must hold firmly.

The installed vibrator is fixed to the mast. Now you need to connect the two “whiskers” through a matching device. This is a cable loop with a resistance of 75 Ohms (type RK-1, 3, 4). Its parameters are indicated in the far right column of the table, and how it is done is on the right side of the photo.

The middle cores of the cable are screwed (soldered) to the flattened ends of the tubes, and their braid is connected with a piece of the same conductor. Getting the wire is simple: cut a piece from the cable slightly larger than the required size and remove all the sheaths. Clean the ends and screw them to the cable conductors (it’s better to solder them).

Then the central conductors from two pieces of the matching loop and the cable that goes to the TV are connected. Their braid is also connected with copper wire.

The last step: the loop in the middle is attached to the rod, and the cable going down is screwed to it. The barbell is raised to the required height and “adjusted” there. To set up, you need two people: one turns the antenna, the second watches TV and evaluates the picture quality. Having determined where the signal is best received from, the home-made antenna is fixed in this position. To avoid having to struggle with “tuning” for a long time, take a look at where your neighbors’ receivers (over-the-air antennas) are pointing. The simplest antenna for a summer residence is made with your own hands. Set and “catch” the direction by turning it along its axis.

Watch the video on how to cut a coaxial cable.

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Loop from a pipe

This do-it-yourself antenna for a summer residence is a little more difficult to manufacture: you need a pipe bender, but the reception radius is larger - up to 40 km. The starting materials are almost the same: metal tube, cable and rod.

The bend radius of the pipe is not important. It is necessary that the pipe has the required length, and the distance between the ends is 65-70 mm. Both “wings” should be the same length, and the ends should be symmetrical about the center.

Homemade antenna for a TV: a TV signal receiver with a reception radius of up to 40 km is made from a piece of pipe and cable (to increase the size of the picture, click on it with the left mouse button)

The length of the pipe and cable is indicated in the table. Find out what frequency the repeater closest to you is broadcasting on, select the appropriate line. Saw off a pipe of the required size (diameter is preferably 12-18 mm, the parameters of the matching loop are given for them).

Channel number	Channel frequency	Vibrator length - from one end to the other, cm	Cable length for matching device, cm
1	50 MHz	276 cm	190 cm
2	59.25 MHz	234 cm	160 cm
3	77.25 MHz	178 cm	125 cm
4	85.25 MHz	163 cm	113 cm
5	93.25 MHz	151 cm	104 cm
6	175.25 MHz	81 cm	56 cm
7	183.25 MHz	77 cm	53 cm
8	191.25 MHz	74 cm	51 cm
9	199.25 MHz	71 cm	49 cm
10	207.25 MHz	69 cm	47 cm
11	215.25 MHz	66 cm	45 cm
12	223.25 MHz	66 cm	44 cm

Assembly

The tube of the required length is bent, making it absolutely symmetrical relative to the center. One edge is flattened and welded/sealed. Fill with sand and seal the other side. If there is no welding, you can plug the ends, just attach the plugs to good glue or silicone.

The resulting vibrator is mounted on a mast (rod). The central conductors of the matching loop and the cable that goes to the TV are screwed to the ends of the pipe, and then soldered. The next step is to connect a piece of copper wire without insulation to the braided cables. The assembly is completed - you can start “setting up”.

Beer can antenna

Even though it doesn't look serious, the image becomes much better. Tested many times. Try it!

Outdoor antenna made from beer cans

We collect it like this:

1. We drill a hole (5-6 mm in diameter) in the bottom of the jar strictly in the center.
2. We pull the cable through this hole and take it out through the hole in the cover.
3. We fix this can on the left on the holder so that the cable is directed to the middle.
4. We pull the cable out of the can by about 5-6 cm, remove the insulation by about 3 cm, and disassemble the braid.
5. We trim the braid, its length should be about 1.5 cm.
6. We distribute it over the surface of the can and solder it.
7. The central conductor sticking out 3 cm needs to be soldered to the bottom of the second can.
8. The distance between the two banks must be made as small as possible and fixed in some way. One option is duct tape or duct tape.
9. That's it, the homemade UHF antenna is ready.

Terminate the second end of the cable with a suitable plug and plug it into the required socket on the TV. This design, by the way, can be used to receive digital television. If your TV supports this signal format (DVB T2) or has a special set-top box for your old TV, you can receive a signal from the nearest repeater. You just need to find out where it is and point your television antenna there, made with your own hands from tin cans.

Simple homemade antennas can be made from tin cans (beer or beverage cans). Despite the frivolity of the “components,” it works very well and is very easy to manufacture

The same design can be adapted to receive VHF channels. Instead of 0.5 liter jars, use 1 liter jars. Will receive MV band.

Another option: if you don’t have a soldering iron, or you don’t know how to solder, you can do it easier. Tie two cans at a distance of several centimeters to the holder. Strip the end of the cable by 4-5 centimeters (carefully remove the insulation). You separate the braid, twist it into a bundle, and make a ring out of it, into which you insert a self-tapping screw. Make a second ring from the central conductor and thread a second screw through it. Now at the bottom of one can you clean out (with sandpaper) a spot to which you screw the screws.

In fact, for better contact, soldering is needed: it is better to tin and solder the braid ring, as well as the point of contact with the metal of the can. But it also works well with self-tapping screws, however, the contact periodically oxidizes and needs to be cleaned. When it starts snowing you will know why...

DIY digital TV antenna

The antenna design is frame. For this version of the receiving device you will need a cross made of wooden boards and a television cable. You will also need electrical tape and a few nails. All.

We have already said that to receive a digital signal you only need a decimeter terrestrial antenna and a corresponding decoder. It can be built into televisions (new generation) or made as a separate device. If the TV has the function of receiving a signal in the DVB T2 code, connect the antenna output directly to the TV. If your TV does not have a decoder, you will need to purchase a digital set-top box and connect the antenna output to it, and connect it to the TV.

How to decide on a channel and calculate the perimeter of the frames

Russia has adopted a program according to which towers are constantly being built. By the end of 2015, the entire territory should be covered by repeaters. On the official website http://xn--p1aadc.xn--p1ai/when/ find the tower closest to you. The broadcast frequency and channel number are indicated there. The perimeter of the antenna frame depends on the channel number.

For example, channel 37 broadcasts at a frequency of 602 MHz. The wavelength is calculated as follows: 300 / 602 = 50 cm. This will be the perimeter of the frame. Let's calculate the other channel in the same way. Let it be channel 22. Frequency 482 MHz, wavelength 300 / 482 = 62 cm.

Since this antenna consists of two frames, the length of the conductor should be equal to twice the wavelength, plus 5 cm for the connection:

• for channel 37 we take 105 cm of copper wire (50 cm * 2 + 5 cm = 105 cm);
• for channel 22 you need 129 cm (62 cm * 2 + 5 cm = 129 cm).

Assembly

It is best to use copper wire from the cable that will then go to the receiver. That is, you take the cable and remove the sheath and braid from it, freeing the central conductor of the required length. Be careful not to damage it.

• for channel 37: 50 cm / 4 = 12.5 cm;
• for channel 22: 62 cm / 4 = 15.5 cm.

The distance from one nail to another must correspond to these parameters. Laying copper wire begins on the right, from the middle, moving down and further to all points. Only in the place where the frames come close to each other, do not short-circuit the conductors. They should be at some distance (2-4 cm).

When the entire perimeter is laid, the braid from a cable several centimeters long is twisted into a bundle and soldered (wound if soldering is not possible) to the opposite edge of the frame. Next, the cable is laid as shown in the figure, wrapping it with electrical tape (more often, but the laying route cannot be changed). The cable then goes to the decoder (separate or built-in). The do-it-yourself antenna for receiving digital television is ready.

How to make an antenna for digital television with your own hands - another design - is shown in the video.