Today, it is digital television that is the best in terms of its quality indicators. However, the digital format is not a guarantee that there will be no failures. Antenna for digital television broadcasting helps to avoid technical problems related to picture quality. But first you need to figure out which antenna to choose for digital television.

Antennas for digital broadcasting - classification

There are several criteria for classifying devices. All devices for digital television are presented in several categories:

  • in accordance with the place of attachment;
  • technical ability to amplify the signal;
  • by the frequency range that the model can accept.

indoor antenna

The device is indoors. The use of a room-type model is possible provided that the TV receives a high-quality, good signal. The house should be located in close proximity to the tower. There are few such places, because buildings, power lines and much more interfere with the signal. Also ineffective indoor antenna at the cottage and settlements away from the city.

Two conditions necessary for the quality operation of a room-type device:

  • the distance for the nearest television tower is no more than 20 km;
  • low building density.

The statement that an indoor antenna can be installed in any room and the signal will be of the same quality is erroneous. For each room, it is necessary to select a model individually.

Outdoor devices.

They are considered universal and are used in any geographical location, including outside the city. Installation should be carried out by a specialist, since certain knowledge must be applied. Proper installation will allow you to receive a reliable and high-quality signal, regardless of the distance from the television tower and the presence of obstacles.

Before buying an antenna, it is important to consider a few basic criteria:

  • remoteness from the TV tower;
  • power;
  • the presence of buildings in the immediate vicinity;
  • degree of interference;
  • where do the windows go?
  • number of storeys of residence;
  • landscape features.

Technical ability to amplify the signal

passive antennas.

Features of operational characteristics and design:

  • amplifies the television signal due to the technical design features of the device;
  • work without a network connection;
  • there are no active elements in the design that can amplify the signal - transistors or microcircuits;
  • a passive device is not able to influence the signal with its interference;
  • often the power of such a device is not enough for a good image.

The passive type model is sufficient for rooms located in the immediate vicinity of the television tower, provided that there are no high-rise buildings around, and the device will be located at a height of more than ten meters.

active antennas.

The signal is amplified by technical features design and with the help of a built-in amplifier, which is mounted inside the device or located separately. The equipment is powered by electrical network through the power supply.

High gain directional antennas.

Sometimes the device creates interference and noise in the received signal. There may be several reasons:

  • the antenna for the digital signal is used in the zone of a stable digital signal
  • the equipment is chosen incorrectly - you should not choose a model with a gain that is more than necessary;
  • low quality goods.

By received frequencies

channel devices.

They are used to broadcast specific channels with a certain frequency, as a rule, ordinary viewers do not need to use models of this type.

Range antennas.

Used where it is necessary to receive waves in a certain range. In particular, for broadcasting channels in digital format, a device that operates in the decimeter range is sufficient.

All-wave antennas.

Capture channels in two ranges. Experts recommend choosing this type of device, because in Russia the channels are broadcast in the meter and decimeter ranges.

Specifications

In spite of great amount numbers indicated in the product passport, only one parameter is important for a simple consumer - the gain factor.

The unit of measure for performance is decibels, with the higher the number, the higher the efficiency of the antenna and the higher the device's ability to amplify the signal. However, not in all cases, excessive force will provide a high-quality picture. It is important that the amplification of the device corresponds to the place of its installation. If the product is of poor quality, it is likely that in technical description non-existent coefficient will be specified.

All figures above 45 dB must be carefully checked, and values ​​​​from 80 to 120 dB are a clear deception.

Very often, buyers find it difficult which antenna is better, given the huge variety of models and device selection criteria. Before buying, ask yourself the following questions:

  • for what purposes the device is purchased;
  • in what area the antenna will operate.

Of course, it is important to correctly install the device, otherwise even the right device does not guarantee a good signal:

  • the device must be directed strictly towards the television tower;
  • for situations where the room overlooks the TV tower, a window antenna is enough, this device is attached to the window frame and in terms of its performance is in no way inferior to an outdoor device, although it is considered a room model;
  • to provide Good work several TVs in the house, you need to buy an outdoor type device with the best performance;
  • do not install the device in close proximity to objects and surfaces that actively generate interference, for example, near metal tiles, power lines, and other transmitting objects.

The first time you need to turn on the antenna without an amplifier, if the image is of poor quality, connect the amplifier. Numerous positive reviews professionals and ordinary consumers confirm the effectiveness of outdoor models.

Which antenna to choose - overview of models

indoor antenna «Blackmore DVB– T2- T5207"

Room type device with amplifier. Captures a signal in two formats in the decimeter range. The gain is 28 dB. The device cable must be purchased separately.

Indoor antenna "Delta K 132 A"

Room type device with amplifier. Power comes from the injector or directly from the set-top box. The gain varies from 20.5 to 25.0 dB. Device dimensions: length - 22 cm; width - 33.6 cm; height - 83 cm. Weight no more than 250 gr.

Antenna

A versatile device that can be installed indoors and outdoors. Suitable for receiving channels in two formats - digital and analog. The kit includes a special bracket for fixing the device, a power supply, a cable and a stand for installation on a horizontal surface. The gain depends on the number of received channels: from 6 to 12 channels - 30 dB; from 21 to 60 - 36 dB.

AntennaAU-13

Small-sized model of the outdoor type, which is attached to the wall or to the balcony grille. The manufacturer of the device is a trademark of DSR. The gain is 13.5 dB. Device dimensions: length - 60 cm; width - 30 cm; height - 20 cm. The weight of the product is 900 grams.

AntennaANT-507 S

Small-sized outdoor type device that can be fixed to a wall or balcony frame. Producer - trademark "Fuba". The gain varies from 5.8 to 7.2 dB. Device dimensions: length - 41 cm; width - 42 cm; height - 29 cm. Weight approximately 450 grams.

AntennaANT-512 S

Small-sized outdoor type device, fixed to a window or balcony grill, you can also fix the device to the wall. Producer - trademark "Fuba". The gain is between 10 and 12 dB. Device dimensions: length - 60 cm; width - 42 cm; height - 36 cm. The mass of the antenna is a little more than one kilogram.

All presented models of outdoor devices can be equipped with an additional amplifier by selecting the appropriate gain.

After watching the video, you can learn more about the main types of television antennas for digital television, as well as get recommendations for setting up equipment.

When choosing an antenna, do not purchase too expensive models. It is better to dwell on outdoor models with average performance, which will be quite enough to view the transmitted channels.

In contact with

How to make a TV antenna for receiving in the decimeter wave range with your own hands? This question is asked by those who like to make everything with their own hands. Both at home and in the country, the antenna will allow you to watch digital TV without resorting to buying a factory-made antenna.

Antenna for digital TV

Digital terrestrial television is the transmission of a television signal using digital coding, which ensures its delivery to the receiving device with the most minimal losses. Accordingly, the TV must support a technology called DVB-T2. For reliable reception, you need a special antenna, which you can buy, or you can make yourself.

There are currently a large number of ways to make antennas with your own hands. Consider the most simple and common.

From beer cans

A simple decimeter indoor TV antenna can be made from beer cans.

For the manufacture of an all-wave home-made antenna of this design, the following materials, components and tools will be needed:

  • 2 cans with a volume of 750 or 1000 ml;
  • coaxial television cable (RK75);
  • antenna plug;
  • electrical tape or tape;
  • self-tapping screws for metal;
  • polypropylene pipe or wooden stick for attaching cans to it;
  • screwdriver;
  • wire cutters;
  • file;
  • ruler.

Antenna for TV from beer cans

How to make an antenna out of beer cans? The manufacturing algorithm is as follows:

  • using a screwdriver, make 1 hole in the neck of each can, making sure that it does not deform;
  • screw the screws into these holes with a screwdriver;
  • clean the ends of the cable with a knife, remembering to clean the copper wire from varnish with a file;
  • screw the wire twisted into a ring and the cable braid to the screws (it will be more reliable if it is welded or soldered, but this is with the appropriate tool);
  • securely fasten the cans to the pipe or stick, using electrical tape or adhesive tape for this purpose, maintaining the distance between the banks (it empirically has long been established, and this size is 7.5 cm);
  • put a plug on the other end of the cable, which will connect the cable to the receiving device.
  • place the antenna in the desired location, i.e. where signal reception would be ideal.

The most painstaking work is the preparation of the PK75 cable. One end must be cleaned from the upper shell at a distance of 10-12 cm with a knife, without damaging the copper braid. Next, you need to twist this braid into a pigtail and remove the aluminum screen. After that, cut off the polyethylene sheath by 6-7 cm and expose the central core. The resulting copper twist and bare core is then attached to the banks.

The second end of the cable must also be stripped and a plug consisting of 2 halves connected to it. The central core of the cable passes through the hole in one half of the plug, and the braid is connected to the plug body. Both halves are wound one on one, and a reliable device is obtained for connecting to the antenna jack of the TV.

If the antenna from cans is planned to be placed on the street, then it must be reliably protected from external weather influences. fit plastic bottles, in which it is necessary to cut off the neck and bottom and place antenna elements in them. Under such conditions, it will reliably carry out the functions assigned to it.

This is the simplest broadband antenna, made from improvised materials without the use of special tools, it is done quickly. It can be made by hand and installed in 20-30 minutes. You can make sure that the homemade antenna receives most satellite TV channels, including TVB-T2. At least it receives up to 15 channels.

in the shape of a figure eight

Home satellite antenna may be in the form of eight. It can also be used for outdoor installation. Works without an amplifier.

Figure eight TV antenna

To make an antenna in the form of a figure eight, you will need:

  • copper or aluminum wire Ø 3-5 mm;
  • coaxial television cable RK75 (can be replaced with a densely braided cable with a resistance of 50 ohms);
  • antenna F-plug;
  • screwdriver;
  • knife or scalpel;
  • glue gun;
  • soldering iron;
  • solder;
  • flux paste;
  • ruler;
  • wire cutters;
  • pliers;
  • file;
  • a solid base (a plastic cover will do).

The production order is as follows:

  • cut 2 pieces of wire 56 cm each;
  • at each end after stripping central vein make a loop (approximately 1 cm on each side will be spent on its manufacture);
  • bend the wire in the form of a square with pliers, connecting the loops;
  • put on the antenna plug on one side of the coaxial cable, before that, carefully twisting the braid and exposing the central core;
  • solder the second side of the cable to 2 squares as follows: the central core to one square, and the braid to the other at a distance of 2 cm;
  • place everything in a lid and pour glue.

The figure shows how to do it correctly.

Making an antenna in the form of a figure eight

Such an antenna can be placed anywhere, and this is its main advantage, you just need to choose the right cable dimensions. You need to know that an amplifier is not needed for its operation. It makes sense to install it on the antenna, with a cable that has a significant length to compensate for losses.

From a cardboard box

A simple satellite dish for TVB-T2 is made using cardboard box. For its manufacture you will need:

  • cardboard box (can be from under shoes);
  • foil;
  • antenna F-plug;
  • screwdriver;
  • knife or scalpel;
  • glue;
  • ruler or tape measure;
  • wire cutters;
  • file.

Such a simple homemade indoor antenna will provide high-quality TVB-T2 reception.

Butterfly

Do-it-yourself all-wave television antenna can be like a butterfly. Such an antenna is no different from a conventional decimeter one. It is easier to convert a simple array antenna, which can be bought at a low price in a retail chain, into a digital one that will receive satellite (T2) channels. To make it yourself, you will need the following materials, components and tools:

  • plank or plywood measuring 550x70x5 mm;
  • copper wire with a central core Ø 4 mm;
  • self-tapping screws for metal;
  • cable coaxial television RK75;
  • antenna F-plug;
  • screwdriver;
  • knife or scalpel;
  • soldering iron;
  • solder;
  • flux paste;
  • ruler or tape measure;
  • wire cutters;
  • pencil.

Butterfly TV Antenna

Manufacturing steps:

  • mark the board as shown in the figure:

Butterfly Antenna Board

To convert measurements in inches to cm, remember that 1 inch equals 2.5 cm.

  • cut 8 wires 37.5 cm long;
  • strip the middle of each wire by 2 cm;
  • bend each wire with the letter V so that the distance between the wires is 7.5 cm;
  • cut 2 wires 22 cm long;
  • strip these 2 wires at the points of attachment to the plank or plywood;
  • collect all the wires with self-tapping screws, as shown in the figure;

Making an antenna in the form of a butterfly

  • connect the antenna with the cable using a special plug.

Antenna plug connection with cable

From coaxial cable

There is a do-it-yourself dmv antenna made of coaxial cable. To make such a simple antenna you will need:

  • coaxial cable PK75;
  • plexiglass or plywood;
  • matching device;
  • antenna plug;
  • pliers;
  • wire cutters;
  • scotch;
  • ruler;
  • pencil.

Antenna for TV from a coaxial cable

Manufacturing steps:

  • cut a piece of cable 530 mm long;
  • strip the pieces of the cable from both sides, exposing the central core and connecting the braid into a pigtail;
  • twist into a ring (it can be in the form of a rhombus) and fix it on a piece of plexiglass or plywood with adhesive tape, leaving a distance between the ends of the cable of about 2 cm;
  • from a piece of coaxial cable 175 cm long, make a horseshoe-shaped matching device. To do this, it is necessary to strip the ends of the cable in the same way as in the manufacture of the ring;
  • prepare the antenna cable. Put on a plug on one side, and strip the other side until the central core and braid are exposed;
  • match the ends of the ring wire with the matching device and the cable going to the antenna, which will then be connected to the television receiver using a plug.

Homemade antenna. Video

A visual aid on how to make a homemade digital TV antenna is presented in this video.

Do-it-yourself antennas for receiving a digital signal are easy to make. In terms of reception quality, they are no worse than factory antennas with an amplifier, and their cost is much lower. They can be used in apartments, private houses and cottages. Everyone can make them from improvised materials, you just have to delve into the manufacturing technology.

Today, almost all homes are connected to cable or satellite TV, and almost all channels go to good quality. But what if you just rent an apartment? Here a homemade antenna for digital television will come to the rescue - as a reliable and inexpensive alternative to the factory one. How it is done, read on.

To make this device, you will have to use plywood 550 by 70 mm, several self-tapping screws, and a forty-centimeter copper wire 40 cm long (the central core is 4 mm in diameter).

The basis of the product is a board. Next, cut 8 pieces of wire, the length of which is 375 mm, while they should be stripped in the center by 20-30 mm. This is necessary to ensure good contact in signal transmission.

Now, cut out 2 wires, the length of which is 220 mm and, based on the size of the plank, they should be stripped where the connections will be. After that, the remaining wires (eight pieces) must be bent so that they acquire a “V” shape.

An antenna for digital television is absolutely no different from a conventional decimeter antenna.

First, you should start buying a special plug, after which the antenna and cable should be connected to it. This is easy enough. With a desktop soldering iron, the plug is attached to the wire. This cable is installed over the bottom connection of the instrument. At this stage, the production of the antenna can be considered completed. She's ready to be turned on.

an antenna for digital television is absolutely no different from a conventional decimeter one.

The second method of making a digital television antenna from cans

Here, we will not use the finished device as a basis. The device will be completely assembled from improvised means. Homemade antenna for digital television is made using:

  • wooden trempel;
  • adhesive tape or electrical tape;
  • soldering iron;
  • two tin cans;
  • several meters of wire (about 3-5 m);
  • plugs.

First, you need to refine the standard television cable. To do this, you need to slightly incise its soft shell. Under the shell, you will see a silvery "foil". This material covers the cable with several layers. For this reason, in order to see the wire itself, you will need to cut off about 10 cm from the edge. After that, the foil layer should be twisted in order to make a cut of its middle layer by about 10 mm. The reverse end of the cord is equipped with a plug used to connect to a TV.

Finished with the cable, banks are next in line. If we talk about dimensions, then a tin container with a volume of 750-1000 mm is enough to receive a digital signal. The end of the wire that is with the “foil” is attached to one bank (otherwise, the channel display will be incorrect). The core of the cable is screwed onto the second can. It is preferable to connect the cable and cans by soldering. If the wire is fixed with adhesive tape, most likely the product will not work.

The only use case for this material is when cans are placed on top of the trempel. However, even here it is impossible to deviate from the technology of application. Namely, the location of the cans should form a straight line. Tin containers should be located at a distance of about 7-8 cm from one another.

That's all, a homemade antenna for digital television is ready. Now you can start searching for a suitable signal and fixing your device. Such an antenna will allow you to view several channels, up to 10-15, if the signal is not password protected.

Video: homemade antenna for digital television

Digital signals are already known to everyone for a long time. All TV organizations switched to the new format. Analog television devices stepped aside. But despite this, quite a few are in working order and can last more than one year. In order for outdated equipment to complete the allotted operational period, while there was the possibility of watching digital broadcasting, you will need to connect DVB-T to a television receiver and catch wave signals with a zigzag antenna.

For those who want to save family budget and at the same time get high-quality television broadcasting, you need to pay attention to the Kharchenko antenna for digital TV with your own hands.

This unique design has been known for a long time, but found itself relatively recently.

The principle of operation of the antenna for digital television

After radio communication appeared, the relevance of the use of the antenna device increased. Since the 60s of the twentieth century, at that time, the recognizable engineer Kharchenko flaunted a design of 2 rhombuses. Such a device allowed him to catch the air of the United States.

This is a double square of thick copper wire. The squares are connected by open corners to each other, in this place the cable from the TV is connected. To increase directivity, a grating made of a material capable of conducting current is mounted at the back.

The perimeter of the squares is equal to the wavelength to which the reception is tuned. About 12 cm should be the diameter of the wire for broadcasting from 1 to 5 TV channels. The design turns out to be far from compact, in the case of assembly for radio communication and TV of the meter range up to 12 channels.

To facilitate the device, a gasket with 3 wires of a smaller cross section was used. Despite this, the size and weight remained impressive.

The antenna in question received a second wind when broadcasting appeared in the UHF range. Most people know rhombuses, triangles and other home-made figures in the form of antenna devices for receiving a decimeter wave signal. Such an antenna plan was fun on balconies, windows of both private houses and multi-storey buildings.

At the beginning of the 2000s, American professor Trevor Marshall proposed using this design in Bluetooth and Wi-Fi networks.

The biquad antenna is also the antenna device of a Soviet engineer. This option is created according to the same principles as the usual biquadrate. hallmark is that at the vertices of the squares, instead of the corners, there are additional squares.

As for the size of these squares, they are identical to the usual ones. This avoids additional calculations. It is enough to use the calculation of the standard biquadrate.

Recall that the wires in the place where they intersect require insulation from each other.

Necessary materials and tools

Do-it-yourself television antenna Kharchenko for DVB T2 is quite economical. In order to assemble the structure, you will need such details as:

  • Wire;
  • Coaxial cable;
  • Wooden rail.

As for tools: pliers, hammer, sharp knife. If you plan to attach the antenna device to a wall or other surface, you will most likely need a drill to mount it.

Antenna calculation

Before proceeding with the creation of the structure, it will be necessary to calculate the Kharchenko antenna. This will allow you to assemble an effective device with maximum accuracy. The dimensions of the zigzag DVB T2 antenna play a significant role in increasing signal reception.

Since technology has stepped forward, there is now no need to leaf through reference books, look for formulas for calculating dimensions. And even more so to carry out complex mathematical calculations in order to correctly develop a sketch or a future drawing.

After that, you get information: about the required length of the copper wire, its sides, diameter.

Assembling the Kharchenko antenna for digital TV

Step-by-step instructions that will allow you to quickly assemble the Kharchenko antenna for digital television with your own hands:

  1. Determine the polarization and frequency of the wave. The device must be linear.
  2. The bi-square type of the antenna device in the form of a zigzag is made of copper. All elements are located at the corners, one of them touches. For horizontal type polarization, the figure eight must stand upright. If you do vertical polarization, then the design lies on its side.

  1. The side of the square is calculated using a special formula - the wavelength, which is divided by four.
  2. Imagine the design, it should be oval in shape, while being pulled in the center across the larger side. The sides do not touch, but are in close proximity to each other.
  3. We bring the antenna cable to the approach points on both sides. It will be necessary to block one direction of the diagram, for this a fetal screen made of copper is mounted, it will be located at a distance of 0.175 from the operating wavelength. It should be put on the cable sheath.

As for the reflector, it was previously made from textolite boards, which were coated with copper. Today, this component is made from metal plates. It is on this principle that the design for receiving digital television is made. Nothing complicated. Everything you need is at hand.

Antenna testing

The device has been created, it's time to check the effectiveness of the work done. To test the reception quality of the wave channel, you need to connect to the receiver. Turn on the TV and receiver.

Open the main menu of the set-top box, select automatic channel search. On average, this process will take only a few minutes. You can also find channels manually, but for this you will have to enter their frequency. To test Kharchenko's design for a TV, it is enough to simply evaluate the quality of the broadcast. If the channels show well, then the work is done correctly.

What if interference is visible? Rotate the TV antenna and see if the picture quality improves. When the optimal location is determined, simply fix the device. Naturally, it should be directed towards the TV tower.

In the days of huge tube TVs, a good antenna for high-quality analog TV reception was in short supply. Those that could be bought in stores were not of high quality. So people made television antennas DMV with your own hands. Today, many are interested in homemade devices. And even when all the time digital technologies, this interest does not fade away.

Digital era

This era also affected television. Today, T2 broadcasting is developing especially widely. It has its own characteristics. In those places where the signal level slightly exceeds the interference, a fairly high-quality reception is obtained. There is simply no further signal. digital signal no interference, however, in a situation of cable mismatch or various phase distortions, almost anywhere in the transmitting or receiving path, the picture can go in squares even with a strong signal level.

In modern television, other changes have taken place. So, all broadcasting is carried out in the UHF band, transmitters have good coverage. The conditions under which radio waves propagate through cities have changed dramatically.

Antenna parameters

Before you start manufacturing, you need to determine some parameters of these structures. They, of course, require in-depth knowledge of various areas mathematics and the laws of electrodynamics.

So, the gain is the ratio of the input power reference system to the input power of the antenna used. All this will work if each of the antennas creates the values ​​of the intensity and flux density with the same parameters. The value of this coefficient is dimensionless.

The directional factor is the ratio of the field strength that the antenna produces to the field strength in any direction.

It must be remembered that parameters such as KU and KND are not interconnected. Exists UHF antenna for digital TV, which has a very high directivity. However, its enhancement is small. These designs are directed into the distance. There are also designs with high directivity. Here it comes in combination with a very powerful level of amplification.

Today you can not look for formulas, but use special programs. They already take into account all the necessary parameters. You just have to enter some conditions - and you will receive a complete calculation of the UHF antenna, so that you can then assemble it.

Manufacturing nuances

Any structural element in which signal currents flow must be connected using a soldering iron or a welding machine. Such a node, if it is in the open air, suffers from a breakdown in contact. From this, various antenna parameters and the reception level can become significantly worse.

This is especially true for points with zero potentials. According to experts, voltage can be observed in them, as well as current antinode. To be more precise, this is the maximum current value. Is it available at zero voltages? This is not surprising.

Such places are best made from solid metal. Creeping currents are unlikely to affect the picture if the connections are made by welding. However, due to their presence, the signal may disappear.

How and what to solder?

Do-it-yourself UHF antenna is not very easy to make. This involves working with a soldering iron. Modern television cable manufacturers no longer make it copper. Now there is an inexpensive alloy that is resistant to corrosion. These materials are difficult to solder. And if they are heated long enough, there is a risk of burning the cable.

Experts recommend using low-power soldering irons, low-melting solders, and fluxes. Do not spare the paste when soldering. The solder will lie correctly only if it is under a layer of boiled flux.

Catch T2

In order to enjoy digital TV, it is enough to purchase a special tuner. But it does not have a built-in antenna. And those that are offered as special digital ones are too expensive and meaningless.

Now we will learn how to catch T2 on a completely homemade design. Homemade UHF antenna - it's simple, cheap, high quality. Try it yourself.

The simplest antenna

To assemble this design, you will not even need to go to the store. For its manufacture, a conventional antenna cable is sufficient. You need 530 mm of wire for the ring and 175 mm from which the loop will be made.

The TV antenna itself is a ring of cable. The ends must be stripped, and then connected to the loop. And to the latter you need to solder a cable that connects to the T2 tuner. So, on the ring, the screen and the central core are connected to the screens of the loop. At the last, the central veins are also connected. And the cable to the tuner is soldered as standard to the screen and the central core.

So we got the UHF antenna, made with our own hands. Its construction turned out to be very cheap and practical. And it works no worse than expensive store options. It must be fixed on plywood or plexiglass. For this, construction clamps are perfect.

"People's" antenna

This design is an aluminum disc. The outer diameter of the element should be 365 mm and the inner diameter 170 mm. The disc must be 1 mm thick. First you need to make a cut in the disk (10 mm wide). In the place where he drank, you should install a printed circuit board made of textolite. It should be 1 mm thick.

The board must have holes for the M3 screws. The board must be glued to the disk. Then you need to solder the cable leads to it. The central core should be soldered to one side of the disk, the screen to the other. In terms of quality, such a TV antenna will receive better with two discs, especially if it is far from the TV repeater.

Universal Antenna

Nothing supernatural will be used to make this design. We will make it from various improvised materials. However, although it is homemade, it will work perfectly in the entire decimeter range. So, this UHF antenna, quickly made with your own hands, is in no way inferior to store-bought, more expensive designs. To receive T2, it will be enough completely.

So, to assemble this design, you will need empty cans of canned food or beer. You need 2 cans with a diameter of 7.5 cm. The length of each is 9.5 cm. You also need to stock up on strips of textolite or getinax, always with foil.

Our cans need to be connected to the textolite strips using a soldering iron. The plate of this material, which will connect the containers at the top, must be completely covered with copper foil. On the bottom plate, the foil should be cut. This is done for easy cable connection.

It is necessary to assemble the structure in such a way that the total length is not less than 25 cm. This antenna (UHF band) is a broadband symmetrical vibrator. Due to its surface area, it has large gains.

If suddenly you cannot find suitable jars, then you can use containers with a smaller diameter. However, then the foil will have to be cut on the upper connecting plate as well.

"Beer" antenna

Love to drink beer? Don't throw away cans. You can make a good antenna out of them. To do this, you need to fix two beer cans on any dielectric material.

First you need to choose the right cable, and then bring it to mind. To do this, the cable must be stripped. You will see shielding foil. There will be a protective layer underneath. But under it, you can directly observe the cable.

For our antenna, you need to strip the top layer of this wire by about 10 cm. The foil must be carefully twisted to end up with a branch. The protective layer for the central core must be cleaned by 1 cm.

On the other hand, you need to solder the plug for the TV to the cable. If you were a subscriber of cable networks, then this part and cable will not even have to be purchased separately.

Now for the cans. It is advisable to use beer containers with a volume of 1 liter. However, good German beer in such cans is expensive, and domestic beer is not sold.

Banks must be opened very carefully. Then you need to free the container from the contents, and then dry it well. Next, use a self-tapping screw to connect our screen on the cable and the jar. To the second you need to fasten the central core.

For more High Quality images, it is better to connect the containers and the cable with a soldering iron.

It is necessary to fix the banks on some dielectric material. It should be noted that they should be located on the same straight line. The distance between them depends on the capacity. All this is selected only by experience.

Zigzag

The UHF zigzag antenna has the simplest possible design. The item itself is broadband. Its device allows you to allow various deviations from the original design parameters. At the same time, its electrical parameters are almost not violated.

Its input resistance in a certain range depends on the size of the conductors that will form the basis of the web. There is a dependency here. The greater the width or thickness of the conductors, the better the antenna will be matched to the feeder. In general, any conductors can be used to make a web. For this, plates, tubes, corners, and much more are suitable.

In order to increase the directivity of such an antenna, it is permissible to use a flat screen, which will play the role of a reflector. The latter will reflect high-frequency energy towards the antenna. Such screens are often large, and the phase depends mainly on the distance.

FROM practical side the reflector is only rarely made from a single sheet of metal. More often it is made in the form of conductors that are connected in the same plane. For design reasons, it is not necessary to make a screen that is too dense. The conductors from which the screen itself will be made are attached by welding or soldering to a metal frame.

Manufactured this design very simple. It works well in the UHF range. In the USSR, it was a real folk irreplaceable model. It has a small size, so it can be used as a UHF indoor antenna.

The material will be copper tubes or aluminum sheet. The side parts can be made of solid metal. Often they are tightened with a net or covered with a tin. If one of the indicated methods is used, then the structure should be soldered along the contour.

The cable must not be bent sharply. How to carry out this element, you can see in the pictures presented.

It must be guided in such a way that it reaches the side corner, but does not go beyond the antenna or side square.

Indoor antenna MV UHF

This design is designed for easy and reliable reception of digital television signals. It can be made easily and very quickly. To do this, you need an aluminum or copper bar. Its length should be up to 1800 mm. This antenna can also be used as an outdoor antenna.

The design is a frame in the form of a rhombus. There should be two. One acts as a vibrator, the second works as a reflector. To receive T2, it is necessary that the side of our rhombus is approximately 140 mm, and the distance between them is 100 mm.

After the frame is made and the structure becomes rigid, a dielectric is mounted between the two ends of our rod. It could be anything. Shape and size are completely irrelevant. The distance between two points of the bars should be approximately 20 mm. The upper parts of our rhombuses need to be connected.

The feeder can be made from a cable. It must be connected to brass or copper petals, which should already be fixed on the antenna output.

If the resulting design does not meet your expectations, for example, poor quality reception or the repeater is far away, you can equip the antenna with an amplifier, and as a result you will get an active UHF antenna. It is used both in the city and in the country.

The simplest UHF loop antenna

This design resembles the number "zero". By the way, this is the coefficient of its amplification. It is ideal for T2 reception. This part is able to work better than the products that are offered in stores.

It is also called digital, because with it you can perfectly catch digital broadcasts. It is narrowband, and this is a significant advantage. It works on the principle of a selective valve, which allows us to talk about reliable protection against interference.

For assembly, you will need an ordinary coaxial cable with a resistance of 75 ohms, as well as a regular TV plug. It is better to choose a cable with a large diameter of all options. As a stand, you can use a cardboard box or something else.

How long the frame will be, we determine using programs for calculating antenna parameters. The material for the manufacture of the frame can be used the same as in the cable. By the way, for calculations you need to know the frequencies of digital broadcasting in your city.

The central core of the cable in the frame design is not needed. The stripped wire is twisted together with the core and braid of the frame. Then this connection must be soldered.

The structure must be placed on a dielectric base. Better to keep it away from your tuner. It is important that there is no voltage at the antenna input.

So, we found out how the UHF antenna is made with our own hands. As you can see, this is not such a difficult task. But now you can watch your favorite TV shows in digital quality. And such a design is installed in the same way as a regular store - on the roof. You can use screws or bolted connection. It should be installed in a safe place so that during gusts of wind it does not fly off along with a piece of slate. It is desirable that the antenna be attached to the maximum high altitude. Thus, you will exclude the appearance of interference during the display of cable or digital television.