The antenna is decimeter. Antennas for television
The purpose of television antennas has long been known to everyone - these are devices designed to receive and transmit digital or analog signals to TV equipment. Traditionally, antennas are divided into three types: indoor, outdoor and hybrid, combining features of both types at the same time.
Initially, when television broadcasting was just beginning to develop, and televisions did not have such multifaceted functionality, the quality of the signal (especially at a significant distance from the source) left much to be desired. Passive antennas, serving only as a receiver, could not provide pictures and sound of adequate quality, which left a strong imprint on the popularization of media technology and television broadcasting in general. It was then that antennas began to be equipped with special amplifiers that greatly increased the quality of the signal entering the TV receiver.
Today, a huge number of companies around the world are developing antennas, but not all of them meet domestic data transmission standards and requirements for perceived frequency ranges. As a purchase recommendation, we have selected seven of the best TV antennas in three main categories that received the highest ratings from consumers.
The selection of devices was made taking into account:
- Technical specifications
- Customer reviews
- Antenna cost (price-quality ratio)
- Opinions of electronics market experts
- User voting results
The best indoor antennas for digital television
Indoor antennas operate in the UHF or meter range, receiving signals at a distance of up to 30 km. Such devices have some limitations on the quality of TV waves and require careful configuration. However, they are compact, inexpensive and can be moved anywhere without any problems. The leader in the market for indoor digital television antennas is considered to be the manufacturer Remo.
5 Remo Inter 2.0
Best desktop antenna
Country: Russia
Average price: 870 rub.
Rating (2018): 4.5
The top four best indoor antennas for digital television are closed by Remo Inter 2.0. The device has a fairly affordable price, while possessing good functionality, which makes it one of the best on the market. The receiver is capable of working with 20 digital, 10 analog and 3 radio signals, unlike competitors that work only with digital. Convenient antenna control will allow you to set the required signal amplification level and achieve maximum quality.
Among the strengths of this device in reviews, buyers highlight low cost, excellent design and ease of installation. The antenna housing itself is collapsible, but can be assembled literally in no time. Separately, it should be said about the power and antenna cables - they not only have high-quality insulation, but also the same length, thanks to which the device can be installed in the right place. Weaknesses include not always stable signal reception and low-quality plastic housing.
4 RA-A30
A good indoor antenna with balanced characteristics
Country: China
Average price: 990 rub.
Rating (2018): 4.6
One of the typical representatives of Chinese indoor digital signal reception antennas, showing good results in the picture stability component. Despite the poor-looking “pin”, which strongly resembles the antennas of standard portable tape recorders, the reception quality remains at a high level. The reason for this is a good standard amplifier (with a coefficient of about 28-30 decibels), closed in a sealed plastic case.
As for the aesthetic component, consumers, in general, are satisfied with the external data of the RA-A30, noting only the strong soiling of the front panel. The reliability parameters here are not the most optimal, but for stable operation for several (and with proper care - for 5-7) years. Thus, this antenna is an excellent option for those who are looking for an inexpensive solution for the home coupled with good performance parameters.
3 Hyundai H-TAI320
Excellent adaptability to customization of structural elements
Country:
Average price: 680 rub.
Rating (2018): 4.8
An interesting example of a home antenna for analogue and digital television, showing generally similar results with models like the HARPER ADVB-2120. The closed circuit of the original shape is combined here with two “horn” antennas (articulated with the body), which provides extensive customization options for normal signal reception. By the way, the Hyundai H-TAI320 is capable of operating both in the VHF frequency range (87.5-230 MHz) and in the UHF range (470-862 MHz), and with a sufficient degree of picture quality.
Good quality is achieved, first of all, due to the presence of a built-in amplifier, the gain of which is a good 30 dB. It is possible to receive digital signals in DVB-T and DVB-T2 formats, as well as FM and DAB. The key advantage of the Hyundai H-TAI320 can be considered the ratio of cost to quality. Having identical performance indicators to competitors, this model has a disproportionately large tuning radius of receiving elements, which is especially important in conditions of concentrated interference.
2 HARPER ADVB-2120
Optimal price-quality ratio
Country: China
Average price: 570 rub.
Rating (2018): 4.8
The second place in the ranking of the best indoor digital television broadcasting antennas goes to the HARPER ADVB-2120. This model has a whole range of optimal characteristics, supported by a huge number of complementary reviews from domestic consumers. A wide range of captured frequencies (from 87.5 to 862 MHz) and the ability to amplify not only digital but also analogue channels (FM, VHF and UHF) are part of a pleasant “synthesis” with an original design, thanks to which the antenna can fit into any interior. It is also important that the signal amplifier is powered directly from the receiver or TV, since it does not have an external network adapter. This imposes some restrictions on the use of the antenna (since not all models of digital equipment support the possibility of direct power supply), but has a positive effect on its compactness.
The ergonomic characteristics of the HARPER ADVB-2120 are also excellent: the antenna can be easily placed on a plane if there is sufficient free space. Otherwise, the shape of the closed ring makes it possible to simply and without problems hang it on any convenient hook. As a result, taking into account the low cost, all of the above characteristics make this model one of the best in its category.
1 Remo BAS-5310USB Horizon
Best price
Country: Russia
Average price: 850 rub.
Rating (2018): 4.7
The high-quality Remo BAS-5310USB Horizon receiver takes first place in the ranking of the best indoor antennas for digital television. The model has an original appearance, and this is not its only advantage. It has relatively small dimensions and convenient mounting, which allows you to install it directly on the TV. When properly configured, the device is capable of receiving waves from 21-69 different channels. The antenna has a built-in amplifier, which qualitatively affects the signal level.
In reviews, buyers talk about excellent reception quality, convenient connection of an amplifier via USB and the ability to work with reflected signals as the strengths of the model. The antenna has a fairly durable case that will save the insides in case of a fall. There are no problems connecting the device. The weight of the receiver is only 230 grams. Power is supplied from a 5 volt power supply, which is supplied in the kit. The disadvantages include a short cable and unreliable fastening.
The best outdoor antennas for digital television
Outdoor antennas for digital television have high power, thanks to their special design, and can receive a signal at a distance of up to 50 km. In this case, it is worth considering the presence of large obstacles in the transmission path, which may interfere with the passage of television waves. Devices are capable of receiving signals at greater distances, but in this case you should pay attention to models with an amplifier.
5 Remo "Dvina-DX"
Best value for money (signal reception)
Country: Russia
Average price: 510 rub.
Rating (2018): 4.5
The next place in the ranking of the best outdoor antennas for digital television is occupied by Remo "Dvina-DX". Despite the low cost, the device has a decent signal reception level, so it can be used to operate at a distance of about 60 km. For better reception of digital and analog waves, the model is equipped with an amplifier. The package includes a 12 volt power supply.
The advantages of this model in reviews from buyers include good signal reception, low cost and ease of use. In addition, when developing the antenna, special attention was paid to the quality of the materials used. The supporting rod is made of durable and lightweight aluminum, and the receiving parts are powder coated to prevent premature failure. Powerful mounting bolts will securely fix the structure to the rod. The disadvantages of this antenna include some installation difficulties and the need to independently modernize the separator for better performance.
4 HYUNDAI H-TAE100
The cheapest digital outdoor antenna
Country: South Korea (made in China)
Average price: 520 rub.
Rating (2018): 4.6
A simple and unpretentious outdoor TV antenna to ensure a stable TV signal at short distances (up to 8-10 kilometers) from relay towers. It has the ability to capture not only analog, but also digital signals in DVB-T and DVB-T2 formats, for which it often becomes the first choice of city residents. It has a modest, by market competitiveness standards, gain factor of only 5 dB. Which, however, is quite enough for comfortable work from high masts.
As a fastening element, the HYUNDAI H-TAE100 is equipped with a bracket with wing nuts, thanks to which the antenna can be easily dismantled without the use of keys or other tools. Judging by consumer reviews, the most controversial characteristic of this model is the reliability parameter, namely resistance to wind loads. This fact quite strictly limits the possible placement height, but is compensated by the cost of the antenna at the level of standard indoor samples.
3 REXANT DVB-T2 RX-411 34-0411
High degree of structural reliability
Country: China
Average price: 1279 rub.
Rating (2018): 4.8
An eight-element outdoor receiver for digital and analogue TV signals, which is a bright representative of the middle peasants with an optimal balance of price and quality. The built-in amplifier REXANT DVB-T2 RX-411 34-0411 has a gain of 34 dB, due to which it provides excellent picture quality even with weak satellite broadcasting. As for the “ground” performance characteristics, for urban realities they are more than reasonable, without claims to outstanding performance. It is advisable to install the model on masts with a total height from the ground to 7 meters. If the antenna is lowered (in an apartment placement option “near the window”), there is a possibility of encountering the problem of interference, which leads to periodic failure and “shattering” of the picture. From the standpoint of structural reliability, REXANT DVB-T2 RX-411 34-0411 performs very well, and, according to user reviews, can operate properly even in the harshest climatic conditions for 7 years.
2 BBK DA32
The most powerful digital antenna
Country: Japan (made in China)
Average price: 2000 rub.
Rating (2018): 4.9
An outdoor TV antenna made in Japan, the main feature of which is excellent signal reception at a distance of up to 50 kilometers from the nearest repeaters. It has an increased gain (32 decibels), which allows it to easily provide adequate picture quality even with a weak signal from satellites. According to user reviews, the BBK DA32 provides excellent functionality in the DVB-T (DVB-T2), ATSC and less sophisticated DSB radio frequencies.
The entire set of “stuffing” of the digital antenna is hidden inside a sealed plastic case, which has good mechanical strength and high impact resistance. It comes complete with a factory-made bracket with universal-type fasteners suitable for any installation conditions. The cost of the BBK DA32 is slightly beyond the segment average, but is fully justified by its performance characteristics and practical functionality.
1 Remo Kolibri-A-DX Deluxe
Popular outdoor antenna
Country: Russia
Average price: 1299 rub.
Rating (2018): 4.9
In first place in the ranking of the best outdoor antennas for digital television is Remo Kolibri-A-DX Deluxe. The device is placed on a special mast for better signal reception. As an addition, an amplifier is provided, which helps to receive channels over longer distances. The model has a successful design, thanks to which it is able to easily perceive a signal even in areas where there is no direct visibility of the source.
In numerous positive reviews, buyers talk about high-quality and stable reception, ease of installation and configuration. At the same time, the metal parts of the antenna are coated with powder paint, which protects them from corrosion and meteorological influences. The kit includes a ready-made cable 6 meters long and an amplifier power supply. Among the disadvantages are the unreliability of the power supply and the inconvenience of adjusting the amplifier.
The best satellite antennas (dishes)
Satellite dishes (or simply dishes) are the most modern of all types of antennas. They boast a wide range of received signals and good quality. However, their cost is an order of magnitude higher than other types.
2 Lans-65 MS6506
Good signal even in bad weather
Country: China
Average price: 2500 rub.
Rating (2018): 4.6
In second place in the ranking of the best satellite antennas is the Lans-65 MS6506 model. This plate has a rather unusual design with parabola geometry and special perforation. This combination allows the antenna to clean itself, which has a positive effect on the quality of the received signal. In addition, perforation significantly reduces the wind load of the entire structure and makes it lighter.
Among the advantages in reviews, buyers point to a pleasant appearance, excellent reception quality and ease of setup. A special powder coating protects the plate from premature failure, and reinforced fastening allows you to smoothly adjust the elevation angle. The disadvantages of using it include periodic signal surges.
1 AUM CTB-0.6 DF - 1.1
Best signal quality for NTV+ and Tricolor TV
Country: Belarus
Average price: 1150 rub.
Rating (2018): 4.7
The first place in the ranking of the best satellite dish antennas is occupied by the AUM CTB-0.6 DF - 1.1 model. The product from the Belarusian manufacturer is recognized as one of the most suitable for working with NTV+ and Tricolor TV. The device has a good gain, which allows it to function in cities even with dense buildings. A distinctive feature of this antenna is not a round, but an ovoid shape, which was done to improve reception.
In reviews, users talk about high quality manufacturing, low cost and ease of setup. For quick installation, all necessary fasteners are included in the kit. If necessary, the standard rod can be easily replaced with a longer one to improve the quality of reception. The only disadvantages include poor quality packaging of additional components.
How to choose a good antenna
The choice of television antennas, like many other devices, is accompanied by some nuances that should be discussed in advance. We strongly recommend that you pay attention to the following parameters:
Antenna type. Depending on the place of application, antennas are divided into indoor, outdoor and hybrid, which can be placed in both conditions. If the received signal is sufficiently stable and reliable, you can get by with a simple indoor antenna. Otherwise, you should give preference to hybrid or full-fledged street options.
Antenna range. In this case, antennas are divided into two types: broadband and narrowband. The first option is advisable to use when the frequency of television broadcasting is unknown in advance. This option is suitable for thrifty owners, in case new channels appear on television. Narrowband antennas are oriented to a specific frequency and it is impossible to adjust them to other bands without losing the current one.
Signal amplification. This function is inherent exclusively to active antennas, the design of which includes an additional module. This design option is suitable when the received signal requires amplification to generate a clear and high-quality image on the TV screen.
Directivity of antennas. A simple and unpretentious way to improve signal quality by shifting the radiation pattern allows antennas to provide focused reception only at a strictly defined azimuth. This effect allows you to avoid interference caused by the reflection of various signals from the walls of residential buildings and other “initiating” objects.
Antenna internal resistance. It is very important that this parameter matches the resistance of the cable connected to the device. The standard resistance of equipment for receiving a television signal is 75 Ohms, and for a radio signal - 50 Ohms.
Design. The aesthetic side of the issue when buying a television antenna should also not be left aside. Often, a pleasant appearance indirectly affects the improvement of the quality of the signal used, since the correct geometry and rational arrangement of additional elements are reflected in the physical parameters.
Digital television is sweeping the country; many people are buying TVs that already support this format. And for those who have previous generation equipment, you can buy a digital set-top box () and connect it to your old TV, which does not support . In general, a worthwhile format allows you to watch television in digital format. BUT many sellers, along with set-top boxes and TVs, “sell” so-called digital antennas, sometimes the price of an antenna reaches 3,000 rubles. Although guys, you can make an antenna for digital television yourself, and very cheaply...
ADVICE! Guys, by the way, you can watch television without an antenna at all via the Internet, but for this you need another set-top box - read this really cool topic.
We continue the article...
To receive a digital signal, a so-called decimeter antenna is required. You can literally make it from an antenna cable. However, it needs to be calculated correctly. If you do not want to read the entire article, you can find the desired item in the table of contents
What you need to make an antenna
1) We need a piece of antenna cable, about 30 cm long.
2) Antenna connectors, the so-called F - connector and male - female connector.
F - connector and male-female
3) Tools: a knife, wire cutters, a calculator and, of course, a tape measure (or a ruler).
Calculation
On the main page, look for the tab “CETV coverage map” and go to it.
“CETV coverage map” tab
A map of digital television coverage opened before us. We are looking for the nearest station for our city (I have Ulyanovsk, you are forgetting your city).
As you can see in my city, this is channel 56 - 754 MHz and channel 59 - 778 MHz.
Now we calculate the length of the antenna. I won’t go into complex technical formulas and terms; we don’t really need them. But to calculate the antenna, we need to divide 7500 by our frequencies.
That is: 7500/754=9.94 cm, this is for channel 56.
7500/778=9.64 cm, this is for channel 59.
Our antenna should be approximately 10 cm, and exactly - ((9.94 + 9.64)/2 = 9.79 cm)
For your city, you also need to display the average length for your stations, if you have several of them in the city. In the video below the article I calculated the antenna for Ulyanovsk and for Kazan.
Manufacturing
1) Take a piece of antenna wire and first attach an F-connector to the end. We simply strip the cable and screw on the connector so that the central wire is in the middle, and the screen (the wires and foil are in the mount), detailed (useful).
2) Set aside a couple of centimeters from our connector (this will be a kind of indent), then measure 10 cm and cut off the unnecessary cable.
3) Now from this 10 cm, we need to remove the plastic insulator and remove the “screen” (foil and small wires). There is no need to touch it further; we leave the cable in the insulator.
4) Our antenna is ready. You can try to connect.
Connection
You need to get a good reception point in your apartment, and it’s not always enough to just insert it into a TV or set-top box. I have such a place near the window, so I inserted an extension cord into the console and inserted the antenna into the extension cord. So far, I have not removed all this improvisedly, for an example of work (that’s why the cable weighs), and the antenna itself is inserted into it.
Well, as you can see, all channels are working normally, “first”, and “Russia”, and NTV, etc.
"First"
Thus, if you have 80 - 100 rubles, you can make an antenna for digital television (DVB-T2 standard) with your own hands, easily and simply.
Now video version
For those who do not show it - - MANDATORY! There's a solution to the problem!
That's all, I think my article is very useful and relevant. Read our construction site.
Today, almost all homes are connected to cable or satellite television, and almost all channels are in good quality. But what to do if you are just renting an apartment? This is where a homemade antenna for digital television will come to the rescue - as a reliable and inexpensive alternative to the factory one. Read on to see how it is done.
To make this device, you will have to use 550 by 70 mm plywood, several self-tapping screws, and a forty-centimeter copper wire 40 cm long (the central core is 4 mm in diameter).
The base 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 dimensions of the board, they should be cleaned where the connections will be. After this, the remaining wires (eight pieces) need to be bent so that they acquire a “V” shape.
An antenna for digital television is absolutely no different from a regular decimeter antenna.
First, you should start purchasing a special plug, after which it should connect the antenna and cable. This is easy enough. Using a benchtop 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. It is already ready to be turned on.
An antenna for digital television is absolutely no different from a regular decimeter antenna.
The second method of making a digital television antenna from cans
Here, we will not use a ready-made device as a basis. The device will be completely assembled from available materials. A homemade antenna for digital television is made using:
- wooden trempel;
- adhesive tape or tape;
- soldering iron;
- two tin cans;
- several meters of wire (about 3-5 m);
- plugs.
First, you need to modify the standard television cable. To do this, you need to slightly cut its soft shell. Under the shell you will see a silvery “foil”. This material covers the cable in several layers. For this reason, in order to see the wire itself, you will have to cut about 10 cm from the edge. After this, you should twist the foil layer in order to make a sample of its middle layer by about 10 mm. The reverse end of the cord is equipped with a plug used to connect to the TV.
We're done with the cable, the banks are next. If we talk about sizes, then a tin container with a volume of 750-1000 mm is enough to receive a digital signal. The end of the wire with the “foil” is attached to one can (otherwise, the display of channels will be incorrect). The cable core is screwed onto the second can. It is preferable to connect the cable and cans by soldering. If the wire is secured with tape, most likely the product will not work.
The only option for using such material is when the cans are installed on top of the trempel. However, here too one cannot deviate from the technology of application. Namely, the arrangement 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, the homemade antenna for digital television is ready. Now you can start searching for a suitable signal and securing 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 television these days continues to spread every day. Providers offer their services in this area by selling expensive devices. However, you can “catch” terrestrial digital television using a homemade antenna.
We invite you to watch a video on making an antenna:
So, we need:
- decimeter antenna;
- calculator;
- antenna cable;
- cable connector;
- ruler
The first thing to note is that to receive digital TV channels you need a TV that supports the DVB-T2 format, otherwise the antenna will not fulfill its purpose. It should also be clarified that providers often advertise so-called digital antennas, which are allegedly created specifically for receiving digital TV channels. This is not true, since you can catch such channels even with a wire. Now that you've sorted out the materials and the introductory part, you can get to work.
Next, we find our district or city on the website to find out the advisory support center or, more simply put, the broadcasting center. The next thing is to call the support center and find out on which channel the digital television is broadcast. The author, for example, broadcasts on channel 27. At the end of this stage, we find out the channel frequency.
Now, using a calculator and a special formula, we have to find out the required length of our antenna. The formula is extremely simple: 7500 must be divided by the number of channel frequencies. The author’s channel frequency is exactly 522000 kHz, that is, you need to divide 7500 by 522. It turns out to be approximately 14.3. We round the result obtained after division and get the length of the antenna in centimeters.
Next, take a regular antenna cable, strip it on one side and insert the connector.
The next thing is to take a ruler and measure the result obtained by dividing, leaving 2 centimeters at the base. That is, if the author needs a cable 14 centimeters long, he measures 2+14 cm.
Cut off the end. After this, we make a cut on the base line and clean it to the edge. We remove the cable protection because we don’t need it. We also cut off the foil.
After this, we bend the cable at the base line at a right angle. The antenna is ready. All that remains is to install it outside so that it faces the transmitting antenna. It is worth noting here that if the distance from the transmitting antenna is more than 15 km, then you will have to use an antenna amplifier.
Buying a good antenna for your dacha is not always advisable. Especially if she is visited from time to time. The point is not so much the cost, but the fact that after a while it may not be there. Therefore, many people prefer to make an antenna for their dacha themselves. Costs are minimal, quality is good. And the most important point is that a TV antenna can be made with your own hands in half an hour or an hour and then, if necessary, can be easily repeated...
Digital television in the DVB-T2 format is transmitted in the UHF range, and there is either a digital signal or it is not. If the signal is received, the picture is of good quality. Due to this. Any decimeter antenna is suitable for receiving digital television. Many radio amateurs are familiar with the TV antenna, which is called “zigzag” or “figure eight”. This DIY TV antenna can be assembled literally in a matter of minutes.
To reduce the amount of interference, a reflector is placed behind the antenna. The distance between the antenna and the reflector is selected experimentally - according to the “purity” of the picture 
You can attach foil to the glass and get a good signal... 
Copper tube or wire is the best option; it bends well and is easy to bend.
It is very simple to make; the material is any conductive metal: tube, rod, wire, strip, corner. Despite its simplicity, she accepts it well. It looks like two squares (rhombuses) connected to each other. In the original, there is a reflector behind the square for more reliable signal reception. But it is more needed for analog signals. To receive digital television, you can do without it or install it later if the reception is too weak.
Materials
Copper or aluminum wire with a diameter of 2-5 mm is optimal for this homemade TV antenna. In this case, everything can be done in literally an hour. You can also use a tube, corner, strip of copper or aluminum, but you will need some kind of device to bend the frames to the desired shape. The wire can be bent with a hammer, securing it in a vice.
You will also need a coaxial antenna cable of the required length, a plug suitable for the connector on your TV, and some kind of mount for the antenna itself. The cable can be taken with a resistance of 75 Ohms and 50 Ohms (the second option is worse). If you are making a TV antenna with your own hands for installation on the street, pay attention to the quality of the insulation.
The mounting depends on where you are going to hang your homemade antenna for digital television. On the upper floors, you can try to use it as a home decoration and hang it on curtains. Then you need large pins. At the dacha or if you take a homemade TV antenna to the roof, you will need to attach it to a pole. For this case, look for suitable fasteners. To work, you will also need a soldering iron, sandpaper and/or a file, a needle file.
Do you need a calculation?
To receive a digital signal, there is no need to count the wavelength. It is simply advisable to make the antenna more broadband in order to receive as many signals as possible. To do this, some changes were made to the original design (pictured above) (further in the text).
If you wish, you can make a calculation. To do this, you need to find out what wavelength the signal is broadcast on, divide by 4 and get the required side of the square. To obtain the required distance between the two parts of the antenna, make the outer sides of the diamonds slightly longer and the inner ones shorter.
Drawing of a figure-of-eight antenna for receiving digital TV
- The length of the “inner” side of the rectangle (B2) is 13 cm,
- “external” (B1) - 14 cm.
Due to the difference in lengths, a distance is formed between the squares (they should not be connected). The two extreme sections are made 1 cm longer so that you can fold the loop to which the coaxial antenna cable is soldered.
Making a frame
If you count all the lengths, you get 112 cm. Cut off the wire or whatever material you have, take pliers and a ruler, and start bending. The angles should be 90° or so. You can make a little mistake with the lengths of the sides - this is not fatal. It turns out like this:
- The first section is 13 cm + 1 cm per loop. The loop can be bent immediately.
- Two sections of 14 cm each.
- Two 13 cm each, but with a turn in the opposite direction - this is the point of inflection onto the second square.
- Again two 14 cm each.
- The last one is 13 cm + 1 cm per loop.
The antenna frame itself is ready. If everything was done correctly, there will be a distance of 1.5-2 cm between the two halves in the middle. There may be small discrepancies. Next, we clean the loops and the bend point to bare metal (treat it with fine-grain sandpaper), and tin it. Connect the two loops and crimp them with pliers to hold them tightly.
Cable preparation
We take the antenna cable and carefully clean it. How to do this is shown in the step-by-step photo. The cable must be stripped on both sides. One edge will be attached to the antenna. Here we strip it so that the wire sticks out 2 cm. If it turns out more, the excess (later) can be cut off. Twist the screen (foil) and braid into a bundle. It turned out to be two conductors. One is the central monocore of the cable, the second is twisted from many braided wires. Both are needed and need to be tinned.
We solder the plug to the second edge. A length of 1 cm or so is sufficient here. Also form two conductors and tin them.
Wipe the plug in the places where we will solder with alcohol or solvent, and clean it with emery (you can use a needle file). Place the plastic part of the plug on the cable, now you can start soldering. We solder a monocore to the central output of the plug, and a multicore twist to the side output. The last thing is to crimp the grip around the insulation.
Then you can simply screw on the plastic tip and fill it with glue or non-conductive sealant (this is important). While the glue/sealant has not hardened, quickly assemble the plug (screw on the plastic part) and remove the excess compound. So the plug will be almost eternal.
DIY DVB-T2 TV antenna: assembly
Now all that remains is to connect the cable and the frame. Since we were not tied to a specific channel, we will solder the cable to the middle point. This will increase the broadband of the antenna - more channels will be received. Therefore, we solder the second cut end of the cable to the two sides in the middle (those that were stripped and tinned). Another difference from the “original version” is that the cable does not need to be routed around the frame and soldered at the bottom. This will also expand the reception range.
The assembled antenna can be checked. If the reception is normal, you can finish the assembly - fill the solder joints with sealant. If the reception is poor, try first to find a place where the fishing is better. If there are no positive changes, you can try replacing the cable. To simplify the experiment, you can use regular telephone noodles. It costs a penny. Solder the plug and frame to it. Try it with her. If it catches better, it’s a bad cable. In principle, you can work on “noodles”, but not for long - they will quickly become unusable. It is better, of course, to install a normal antenna cable.
To protect the junction of the cable and the antenna frame from atmospheric influences, the soldering points can be wrapped with ordinary electrical tape. But this method is unreliable. If you remember, you can put on several heat-shrinkable tubes before soldering to insulate them. But the most reliable way is to fill everything with glue or sealant (they should not conduct current). As a “case” you can use lids for 5-6 liter water cylinders, ordinary plastic lids for jars, etc. We make indentations in the right places - so that the frame “sits” in them, do not forget about the cable outlet. Fill it with a sealing compound and wait until it sets. That's it, your DIY TV antenna for receiving digital television is ready.
Homemade double and triple square antenna
This is a narrowband antenna, which is used if you need to receive a weak signal. It can even help if a weaker signal is “clogged” by a stronger one. The only drawback is that you need precise orientation to the source. The same design can be made to receive digital television.
You can also make five frames - for a more confident reception 
It is not advisable to paint or varnish - reception deteriorates. This is only possible in close proximity to the transmitter 
The advantages of this design are that reception will be reliable even at a considerable distance from the repeater. You just need to specifically find out the broadcast frequency, maintain the dimensions of the frames and the matching device.
Construction and materials
It is made from tubes or wire:
- 1-5 TV channel MV range - tubes (copper, brass, aluminum) with a diameter of 10-20 mm;
- 6-12 TV channel MV range - tubes (copper, brass, aluminum) 8-15 mm;
- UHF range - copper or brass wire with a diameter of 3-6 mm.
The double square antenna consists of two frames connected by two arrows - upper and lower. The smaller frame is a vibrator, the larger one is a reflector. An antenna consisting of three frames gives a higher gain. The third, smallest square is called the director.
The upper boom connects the middle of the frames and can be made of metal. The lower one is made of insulating material (textolite, gettinax, wooden plank). The frames must be installed so that their centers (the points of intersection of the diagonals) are on the same straight line. And this straight line should be directed towards the transmitter.
The active frame - the vibrator - has an open circuit. Its ends are screwed to a textolite plate measuring 30*60 mm. If the frames are made from a tube, the edges are flattened, holes are made in them and the lower arrow is attached through them.
The mast for this antenna must be wooden. At least the upper part of it. Moreover, the wooden part should start at a distance of at least 1.5 meters from the level of the antenna frames.
Dimensions
All dimensions for making this TV antenna with your own hands are given in the tables. The first table is for the meter range, the second is for the decimeter range.
In three-frame antennas, the distance between the ends of the vibrator (middle) frame is larger - 50 mm. Other sizes are given in the tables.
Connecting an active frame (vibrator) via a short-circuited cable
Since the frame is a symmetrical device, and it must be connected to an asymmetrical coaxial antenna cable, a matching device is required. In this case, a balancing short-circuited loop is usually used. It is made from pieces of antenna cable. The right segment is called the “loop”, the left one is called the “feeder”. A cable is attached to the junction of the feeder and the cable, which goes to the TV. The length of the segments is selected based on the wavelength of the received signal (see table).
A short piece of wire (loop) is cut at one end by removing the aluminum screen and twisting the braid into a tight bundle. Its central conductor can be cut down to insulation, since it does not matter. The feeder is also cut. Here, too, the aluminum screen is removed and the braid is twisted into a bundle, but the central conductor remains.
Further assembly proceeds like this:
- The braid of the cable and the central conductor of the feeder are soldered to the left end of the active frame (vibrator).
- The feeder braid is soldered to the right end of the vibrator.
- The lower end of the cable (braid) is connected to the feeder braid using a rigid metal jumper (you can use wire, just make sure there is good contact with the braid). In addition to the electrical connection, it also sets the distance between sections of the matching device. Instead of a metal jumper, you can twist the braid of the lower part of the cable into a bundle (remove the insulation in this area, remove the screen, roll it into a bundle). To ensure good contact, solder the bundles together with low-melting solder.
- The cable pieces must be parallel. The distance between them is about 50 mm (some deviations are possible). To fix the distance, clamps made of dielectric material are used. You can also attach a matching device to a textolite plate, for example.
- The cable going to the TV is soldered to the bottom of the feeder. Braid is connected to braid, center conductor to center conductor. To reduce the number of connections, the feeder and cable to the TV can be made single. Only in the place where the feeder should end must the insulation be removed so that the jumper can be installed.
This matching device allows you to get rid of noise, blurry contours, and a second blurry image. It is especially useful at a great distance from the transmitter, when the signal is clogged with interference.
Another variation of the triple square
In order not to connect a short-circuited loop, the triple square antenna vibrator is made elongated. In this case, you can connect the cable directly to the frame as shown in the figure. Only the height at which the antenna wire is soldered is determined in each case individually. After the antenna is assembled, “testing” is carried out. The cable is connected to the TV, the central conductor and braid are moved up/down, achieving a better image. In the position where the picture will be clearest, the antenna cable branches are soldered, and the soldering points are insulated. The position can be any - from the bottom jumper to the transition point to the frame.
Sometimes one antenna does not give the desired effect. The signal turns out to be a weak image - black and white. In this case, the standard solution is to install a television signal amplifier.
The simplest antenna for a summer residence is made from metal cans
To make this television antenna, in addition to the cable, you will only need two aluminum or tin cans and a piece of wooden plank or plastic pipe. Cans must be metal. You can take aluminum beer beers, or you can take tin ones. The main condition is that the walls are smooth (not ribbed).
The jars are washed and dried. The end of the coaxial wire is cut - by twisting the braided strands and clearing the central core of insulation, two conductors are obtained. They are attached to banks. If you know how, you can solder it. No - take two small self-tapping screws with flat heads (you can use “fleas” for drywall), twist a loop at the ends of the conductors, thread a self-tapping screw with a washer installed on it through it, and screw it to the can. Just before this you need to clean the metal of the can by removing the deposits using fine-grain sandpaper.
The cans are secured to the bar. The distance between them is selected individually - according to the best picture. You shouldn’t hope for a miracle - there will be one or two channels in normal quality, but maybe not... It depends on the position of the repeater, the “cleanliness” of the corridor, how correctly the antenna is oriented... But as a way out in an emergency, this is an excellent option.
A simple Wi-Fi antenna made from a metal can
An antenna for receiving a Wi-Fi signal can also be made from improvised means - from a tin can. This DIY TV antenna can be assembled in half an hour. This is if you do everything slowly. The jar should be made of metal, with smooth walls. Tall and narrow canning jars work great. If you will be installing a homemade antenna on the street, find a jar with a plastic lid (as in the photo). The cable is an antenna, coaxial, with a resistance of 75 Ohms.
In addition to the can and cable, you will also need:
- RF-N connector;
- a piece of copper or brass wire with a diameter of 2 mm and a length of 40 mm;
- cable with a socket suitable for a Wi-Fi card or adapter.
Wi-Fi transmitters operate at a frequency of 2.4 GHz with a wavelength of 124 mm. So, it is advisable to choose a jar such that its height is at least 3/4 of the wavelength. For this case, it is better that it be more than 93 mm. The diameter of the can should be as close as possible to half the wavelength - 62 mm for a given channel. There may be some deviations, but the closer to the ideal, the better.
Dimensions and assembly
When assembling, a hole is made in the jar. It must be placed strictly at the desired point. Then the signal will be amplified several times. It depends on the diameter of the selected jar. All parameters are shown in the table. You measure the exact diameter of your can, find the right stitch, and have all the right dimensions.
| D - diameter | Lower limit of attenuation | Upper limit of attenuation | Lg | 1/4 Lg | 3/4 Lg |
|---|---|---|---|---|---|
| 73 mm | 2407.236 | 3144.522 | 752.281 | 188.070 | 564.211 |
| 74 mm | 2374.706 | 3102.028 | 534.688 | 133.672 | 401.016 |
| 75 mm | 2343.043 | 3060.668 | 440.231 | 110.057 | 330.173 |
| 76 mm | 2312.214 | 3020.396 | 384.708 | 96.177 | 288.531 |
| 77 mm | 2282.185 | 2981.170 | 347.276 | 86.819 | 260.457 |
| 78 mm | 2252.926 | 2942.950 | 319.958 | 79.989 | 239.968 |
| 79 mm | 2224.408 | 2905.697 | 298.955 | 74.738 | 224.216 |
| 80 mm | 2196.603 | 2869.376 | 282.204 | 070.551 | 211.653 |
| 81 mm | 2169.485 | 2833.952 | 268.471 | 67.117 | 201.353 |
| 82 mm | 2143.027 | 2799.391 | 256.972 | 64.243 | 192.729 |
| 83 mm | 2117.208 | 2765.664 | 247.178 | 61.794 | 185.383 |
| 84 mm | 2092.003 | 2732.739 | 238.719 | 59.679 | 179.039 |
| 85 mm | 2067.391 | 2700.589 | 231.329 | 57.832 | 173.497 |
| 86 mm | 2043.352 | 2669.187 | 224.810 | 56.202 | 168.607 |
| 87 mm | 2019.865 | 2638.507 | 219.010 | 54.752 | 164.258 |
| 88 mm | 1996.912 | 2608.524 | 213.813 | 53.453 | 160.360 |
| 89 mm | 1974.475 | 2579.214 | 209.126 | 52.281 | 156.845 |
| 90 mm | 1952.536 | 2550.556 | 204.876 | 51.219 | 153.657 |
| 91 mm | 1931.080 | 2522.528 | 201.002 | 50.250 | 150.751 |
| 92 mm | 1910.090 | 2495.110 | 197.456 | 49.364 | 148.092 |
| 93 mm | 1889.551 | 2468.280 | 194.196 | 48.549 | 145.647 |
| 94 mm | 1869.449 | 2442.022 | 191.188 | 47.797 | 143.391 |
| 95 mm | 1849.771 | 2416.317 | 188.405 | 47.101 | 141.304 |
| 96 mm | 1830.502 | 2391.147 | 185.821 | 46.455 | 139.365 |
| 97 mm | 1811.631 | 2366.496 | 183.415 | 45.853 | 137.561 |
| 98 mm | 1793.145 | 2342.348 | 181.169 | 45.292 | 135.877 |
| 99 mm | 1775.033 | 2318.688 | 179.068 | 44.767 | 134.301 |
The procedure is as follows:
You can do without an RF connector, but with it everything is much simpler - it’s easier to position the emitter vertically upward, connect the cable going to the router or Wi-Fi card.