Technical characteristics of SWA boosters Satellite ownership and Digital broadcasting station T2 Antenna booster swa 14

In the article published here, our current author analyzes the circuit design of antenna boosters of the Polish manufacturer and provides information on the approach to their selection from the point of view of the coefficient And the noise is louder. He also gives recommendations for the repair of such devices, so that lightning discharges often go out of order, and self-awakening decreases. To allow you to use a large number of radio amators, not only select the necessary booster, but also paint your robot.

Active antennas from the Polish company ANPREL and many others have become widespread in Russia and SND countries. With slight power enhancement, especially in the MB range, the parameters of such antennas are largely considered to be a boosted antenna. This power block itself has a number of shortcomings: it is strong until awakening, can tolerate a high level of heavy noise, is easily overwhelmed by heavy signals in the MB range, and is often overwhelmed by lightning discharges. These problems are known to many owners of such antennas.

The power operation of SWA antenna boosters and similar edges is poorly covered in the literature. You can only mean publication, where the re-intensification of power by MB signals is indicated. The owners of antennas have to deal with the shortcomings in a familiar way: replacing the boosters, choosing the best one. However, this method requires a lot of strength, and requires a lot of support, which is usually very accessible - to be pulled out at once with the antenna on a high ground.

Based on the analysis of circuit design, complete evidence and materials from ANPREL, we provide an informed approach to the selection of boosters, as well as a repair method that allows you to update the defective unit , and in a number of drops and populate your parameters.

The market for replacements of non-interchangeable models of antenna boosters produced by ANPREL, TELTAD and others under different brands and numbers. Regardless of such diversity, most of them are collected behind a standard circuit and with a double-stage aperiodic boost on bipolar low-frequency transistors connected behind the OE circuit. To confirm this, we will look at models from different companies: a simple booster SWA-36 from TELTAD, the principle diagram of which is shown in Fig. 1, and extensions of the booster SWA-49 (analogous to SWA-9) from ANPREL - Fig. 2.

The SWA-36 booster contains two wide-angle power stages on transistors VT1 and VT2. The signal from the antenna goes through a narrow transformer (not shown on the diagram) and capacitor C1 to the base of transistor VT1, connected behind the OE circuit. The operating point of the transistor is set by the voltage, which is indicated by resistor R1. In this case, the negative feedback loop (OCC) directly linearizes the characteristic of the first cascade, stabilizes the position of the operating point, and changes its strengthening. Frequency correction in the first cascade is daily.

Another cascade of connections on the transistor behind the circuit with OE and OOS behind the voltage through resistors R2 and R3, and also Strum OOS through resistor R4 in the emitter circuit, rigidly stabilizes the mode of transistor VT2. To eliminate the high loss of amplification, resistor R4 is shunted across the exchangeable circuit by capacitor SZ, the capacitance of which is designed to be extremely small (10 pF). As a result, at the lower frequencies in the range, the amnesic support of the capacitor SZ appears to be adequate and the OOS of the alternating stream changes intensification, thereby corriging the frequency response of the booster itself.

Up to a small amount of booster SWA-36, you can add passive losses to the output voltage on resistors R5, which is switched on so that both the constant voltage and the signal voltage drop.

The SWA-49 booster (Fig. 2) is similar, which also has two cascades, assembled behind the OE circuit. The wine is separated from SWA-36 by a short separation through the life lanks through L-like filters L1C6, R5C4 and with a higher coefficient of reinforcement for the visibility of the capacitor C5 of the OOS lanks (R3C5R6) of another cascade and transition capacitor C7 at the output.

Similar circuitry is used in most other SWA boosters (for example, the SWA-3 booster circuit is shown in). Minor differences are most often found in another cascade, which can provide different levels of frequency correction, varying the depth of feedback and, therefore, the amplification factor. In some models, for example SWA-7, the first and other cascades are connected directly to the base transistor VT2. This allows the cascade to flow through an OOS loop through a steady stream and thereby improve the thermal stability of the booster.

Cascades on transistors connected behind the OE circuit have the greatest inflow of internal connections and transistor junction capacities. It manifests itself in the limited intensity of transmission and the strength of the stimulus to self-awakening, the reliability of which is greater than the greater coefficient of strength. For this assessment, we need to understand the stability threshold - the limit value of the amplification factor, when any power is transferred, it turns into a generator. Most SWA antennas operate at high strengths beyond the resistance threshold, which explains their frequent self-excitation.

To increase the resistance of the power supply, the ANPREL company creates a different topology of other circuit boards (which fits into the installation space), the surface and volume of the coil, chokes, etc. . With an unchanged circuit for switching on transistors with OE-OE, the company is free to release regulating life blocks to solve stability problems. Changes in your voltage allow you to put in self-awakening power to save enough power.

The main parameters (noise coefficient Ksh and power coefficient K) of the basic models of SWA boosters according to the ANPREL catalog are shown in the table. 1.

Let's take a look at the interconnections of the main parameters with the circuitry of the boosters and their flow into the receiver voltage.

Apparently, the amplification factor at high frequencies in OE cascades is critical to the parameters of the transistors that are being adjusted, especially to the cutoff frequency frp. The SWA boosters have bipolar low-frequency transistors of the p-p-p structure, marked as T-67, and up to 415, which means the maximum achievable gain coefficient Ku of the double-stage booster is about 40 dB. Obviously, in such a wide operating mixture of frequencies, the amplification factor is not deprived of a constant one - its changes reach 10...15 dB due to the unevenness of the frequency response at the highest frequencies in the range and correction at the bottom sneeze At maximum values ​​of the boost factor, it is important to ensure the stability of the boosters; a number of models have values ​​up to 10...30 dB, which is often completely sufficient (div. Table 1).

If you think broadly, it should be noted that the amplification factor cannot be influenced by the head parameter of the antenna booster. Even though the televisions themselves have a great supply of power, they also have a high sensitivity, surrounded by power. Their greatest sensitivity is surrounded by synchronization. I find, at the bottom – sensitivity, surrounded by noise. Therefore, the official, the initial long-distance reception, is to accept the level of high-volume noise in the electronic path, and this is not a factor of amplification. In other words, the reduction in the ability to receive the first word occurs through the influx of noise transcodes, and not through a lack of signal strength.

The influx of noise is assessed by the signal-to-noise ratio, the minimum value of which is accepted to be 20. In this case, they indicate sensitivity, surrounded by noise, which is similar to the voltage of the input signal, 20 times greater than the voltage of noise.

For third- to fifth-generation TVs, sensitivity, surrounded by noise, reaches 50...100 µV. However, even if the signal/noise level is higher than 20, the image clarity and detail of only great details are reduced. To capture the image of a burnt-out signal, the red signal is approximately 5 times larger at the input of the TV, in order to ensure a signal-to-noise ratio of approximately 100.

The antenna booster is responsible for increasing the signal-to-noise ratio, and for this purpose it is necessary to enhance the signal rather than the noise. However, any electronic booster will inevitably generate noise, which will interfere with the original signal and absorb the signal/noise ratio. Therefore, the most important parameter of the antenna booster is its noise coefficient Ksh. If the signal is not small enough, the coefficient gain is increased slightly, and both the signal and the noise are increased, however, and the result is not improved. As a result, if the signal at the antenna input of the TV is sufficiently equal, the images will be affected by intense noise distortion (the familiar “snow”).

For a unified assessment of the noise of a multi-cascade tract, we use the indicator of the noise coefficient Ksh induced at the input, which is equal to the noise at the output, divided by the external amplification factor, so that Ksh = Ksh.vih/K. So, since the output noise level of the outputs is greater than the noise level of the first transistor, which is present in all subsequent cascades, the noise of other cascades can be extracted. Todi Ksh.out = Ksh1Ku, de Ksh, is the noise coefficient of the first transistor. Therefore, we reject Ksh = Ksh1, i.e., the induction coefficient for the noise of the subsiluvial tract lies in the number of cascades and the primary coefficient of amplification, and the corresponding coefficient for the noise of the first transistor.

This brings up an important practical point - the use of the antenna booster can give a positive result if the noise ratio of the first booster transistor is less than the noise ratio of the first stage of the TV. The fifth-generation TV channel selectors have a KP327A field-effect transistor with a noise coefficient of 4.5 dB at a frequency of 800 MHz [Z]. Also, in the first cascade of the antenna booster, the transistor from KSh1 is to blame<4,5 дБ на той же частоте. Причем, чем меньше это значение по сравнению с коэффициентом Кш1 телевизора, тем эффективнее применение усилителя и тем выше качество приема.

The noise coefficient also depends on the temperature at the input of the booster and the mode of the first transistor. For SWA boosters, the type of transistor VT1, the operating mode and the brightness of the device mean the induction coefficient Ksh = 1.7...3.1 dB (div. Table 1).

From the above it is clear that the choice of antenna booster based on the principle - the greater the strength coefficient, or in short - is incorrect. Moreover, many rulers, changing forces, cannot achieve a good result. The reason for this seemingly paradoxical fact lies in the fact that the noise coefficient is, as a rule, unknown (it is not found in the sales information of companies), but in reality it is less than a little different in rich models with different powers (div. Table 1). ). A higher amplification factor with a constant noise ratio does not allow for a gain in signal/noise and, therefore, an increase in the quality of the reception. Rare success can only be achieved if the low-noise booster is gradually carried out.

Also, when choosing an antenna booster, you must first focus on the minimum level of noise. You can really pay a premium for Ksh<2 дБ. Из табл. 1 лучшими можно считать модели SWA-7, SWA-9, имеющие Кш=1,7 дБ. Информацию о коэффициенте шума новых усилителей можно найти в каталогах фирмы ANPREL или в сети Интернет.

As far as the amplification factor is concerned, it is obviously also important, not for the maximum amplification of weak signals, but, first of all, to compensate for the costs of a reliable cable, devices that are in good condition, etc. spend If the signal at the TV input is not sufficiently strong, it may fall below the threshold of sensitivity, synchronization may be impaired, or it may become too strong to interfere with reception. Therefore, in order to correctly select the amplification factor, it is necessary to know the signal attenuation in the given path. And it doesn’t matter how important it is to unravel these orients.

The signal attenuation in the wide cable brand RK-75-4-11 is 0.07 dB/m on the first-fifth, 0.13 dB/m on the sixth-twelfth and 0.25...0.37 dB/ m on TV channels 21-60. With a feeder increase of 50 m, the attenuation on 21-60 channels is 12.5 ... 17.5 dB. In accordance with the regulations of the industry, a passive disintegrator must make additional expenses at the skin outlet, the values ​​of which are usually indicated on the body.

Having released the extinction in the cable and added to a new weakening in the wires (as it is), maintain a minimum coefficient of amplification of the antenna booster. Add a margin of 12...14 dB to strengthen weak signals, which is necessary due to the low efficiency of wide-black, small-sized receiving antennas. Based on the required values, select the antenna booster. There has been a significant reduction in the significance of the coefficient of strengthening, since there is a greater likelihood of self-awakening and re-influence by the pressure of signals from nearby stations.

Repair of booster antennas mainly involves replacing active elements damaged by lightning discharges. It should be noted that the presence of a diode at the input in some models does not guarantee complete protection from the spark: with a strong atmospheric discharge, both a dry diode breaks through and, as a rule, damages the transistor.

The SWA power antennas are assembled using the technology of automatic surface assembly on microelements, which requires care during repairs. Solder the trace using a small-sized soldering iron with a highly sharpened tip. In a booster that does not work, be careful not to damage the thin conductors, connect microtransistors VT1, VT2 and the dry diode (as it is).

The main parameters of the external transistors required for installing the SWA booster are shown in table. 2 [Z]. It shows that the viscosity in the first cascade of transistors KT391A-2, KT3101A-2, KT3115A-2, KT3115B-2, KT3115V-2, the noise characteristics of most models of boosters do not suffer, but the transistors stagnate sistors 2T3123-22 2, KT3132A-2 lowers Ksh up to 1.5 dB, which improves the parameters of the booster. This situation allows us to recommend replacing the first transistor of the booster with the remaining ones in the reference, or “noisy” boosters, using the method of increasing the brilliance of their work. Slide indicate what is in the table. 2 gives the limit values, typical parameters, as a rule, shorter than [3].

Low-noise low-frequency transistors of the 2T3124, KT3132 series are expensive and low-current, so it is better to install them only in the first stage, and in the other case, the cheaper and tighter transistors KT391A-2, KT3101A-2 (div. table. 2) and enter the table. , KT382, KT399 and others with a cutoff frequency of close to 2 GHz [Z]. However, in the remaining case there will be a slightly smaller gain coefficient at the upper frequencies of the range.

The dimensions of the housing of imported microtransistors will increase to 1.2 x 2.8 mm with an increase of 1 ... 1.5 mm. There are also connections on the board between the other mounts for connecting small transistors. Installing hard transistors with a housing diameter of 2 mm from the side of surface mounting, although possible, is not twisted: when soldering them, they can be damaged. New transistors can be easily installed from the side of the board, having drilled the front openings for leads with a drilled diameter of 0.5...0.8 mm. It is better to drill not into the conductor itself, but so that it opens to the edge of the maidan. If there is a ball of foil on the side opposite to the surface mounting, then open a hole in the new slot with a drill diameter of 2...2.5 mm (the opening is for removing the emitter of transistor VT1).

Then new transistors are installed so that the crystal trimmer or the housing is attached to the torquing plate. As the pins significantly protrude from the other side, after soldering they are slightly sweet. Low-frequency transistors are sensitive to static electricity, so when working, you need to ensure that there are no inputs to the protection. Hour of singing - a little more than 3 z [Z].

The dry diode does not need to be installed. The best protection for atmospheric electricity is to use a grounded antenna.

In the SWA modules, the transistors operate with a 10...12 mA collector circuit. After replacing such a string is acceptable for another transistor (for example, KT3101A-2), it remains permanently acceptable for the first one, if transistors of the KT3115, KT3124 and KT3132A-2 series are installed (div. Table 2). The collector circuit is located under the h21e parameter, which is where the transistors produce a significant distribution. Therefore, after installing a specific instance, it is necessary to install the operating point of transistor VT1. For this purpose, microresistor R1 is used and instead of this, an adjusting resistor (SPZ-23, SPZ-27, etc.) is connected with a support of 68 ... 100 kOhm. Before increasing the motor voltage, the resistor must be placed in the maximum support position so as not to damage the transistor.

A voltage of 12 is supplied to the booster through the life block 8 and the voltage drop across resistor R2 is observed (div. Fig. 1 and 2). Having divided the voltage to the support of resistor R2, the collector string is detected. The regulating support of the tuning resistor at b_k is changed to reach the collector flow of about 5 mA, which indicates a minimum of noise behind the characteristics of the transistors [Z]. At this point, the adjustment is completed and instead of the tuning resistor, a constant one of the same support (MLT-0.125 or imported) is soldered in, first shorting it to the minimum of its connection.

After this, cover the wooden board and unpackaged transistors with a ball of radio-technical varnish or compound. The external appearance of the updated booster SWA-36 is shown in Fig. 3. The new vikoristan has transistors (Fig. 3, a) 2T3124B-2 (VT1) and KT3101A-2 (VT2). In connection with the simplest design of the booster, self-excitation is eliminated: a ferite microcircuit is placed on the output of the collector of transistor VT1 (which is installed at the channel selectors of SK-M TVs ZUSTs T ta 4USTST). The collector string of transistor VT1 is set by resistor R1 (Fig. 3.6) with a nominal value of 51 kΩ (it was 33 kΩ).

Fig.3

In another cascade, transistors of the KT372, KT399 series were tested, which preserved stability and a sufficient enhancement factor. In this case, the possibility of installing an additional capacitor Z with a capacity of 150 pF was verified (Fig. 3.6), which shunts resistor R5 (div. Fig. 1), to increase the amplification factor. When a self-excitation capacitor is installed, the power supply voltage is reduced.

In the main version (with transistors 2T3124B-2 and KT3101A-2), the booster ensures repair, even before repair, as it is visually assessed approximately with the new booster SWA-9.

LITERATURE:
1. Tuzhilin S. Pidsilyuvach UHF from wide-smooth. - Radio, 1997, N 7, p. 15.
2. Nikitin V. For the sake of long-distance TV lovers. Sat.: "To help the radioamator", VIP. 103. - M.: DTSAAF, 1989.
3. Pipeline devices. Low pressure transistors. Dovidnik For ed. A. V. Golomedova. - M: Radio and connections, 1989.

Radio 1-99

The SWA and LSA booster antennas are not independent devices, replacing existing boosters such as Alcad. The stinks are an electronic power board and require a life-saving device and a dry casing.
Use antennas of the same type ASP-4, ASP-8, which are often called Polish antennas. The gain coefficient of such antennas without booster is small, and their additional power is important to be determined by the installation of booster.
The power antennas have an input support, which is indicated by the antenna design of 300 Ohm, an output support of 75 Ohm for connection to a TV receiver, and a power supply voltage of 9 to 15 V. Designed for increasing frequencies 49 - 790 MHz.

Subscribers swa

So what? grid antenna? The parts of the antenna, sometimes called a mesh antenna or a screen antenna, are a flat vibrator structure with a flat mesh screen, which is a reflector. The booster antennas are installed directly onto such an antenna and are supplied with constant voltage through the antenna cable. Structurally suitable for multi-part antennas that are produced by different transmitters, Vikonani, however, has a small board measuring 60 x 40 mm with surface-mounted SMD elements.

Pidsiluvach swa It is installed on existing antennas, antennas, networks or, as it were, “Polish antennas”. It is important to go to the television center to stagnate, to stagnate various models of payment for support workers, which may have a different strength factor and allow you to receive television programs on a substation from 0 to 150 kilometers per transfer.

Antenna power characteristics

What parameters influence the power of boosters? To assess the amplification factor swa, such as the picture quality on the TV screen, the parameters of the amplification factor and the noise factor are also important. The noise coefficient is the least important, and the amplification coefficient is not the maximum, and its value is no greater than that to bring the signal to the TV input to the normal level.

The table contains technical parameters and characteristics of antenna boosters swa, their modifications and analogues sym, lux, turbo, aws, wa, s&a, pa, gps, pae, ts. Noise coefficient and induction amplification coefficient in dB, it is recommended to travel to the television center in km.

Purpose of the antenna booster lsa

Antennas LSA are produced for the repair of popular active television antennas Locus, which came out well. Active antennas go out of order as a result of a strong electromagnetic discharge when a spark is hit, a malfunction of the power adapter, due to old elements, due to broken sealing of a dry mounting box and wetness of circuit elements .

Replacing the regular booster Locus with booster lsa

Antenna booster LSA 417(LSA 020) is installed to replace the booster of models L 025.09, L025.12, L025.62 and other models of the Locus 25 series antenna, which is best. Valid for models released after 2007. A characteristic feature is the presence of plastic straight lines in the fastening of the reinforcement. The Locus 025 series of antennas is equipped with one booster and one board made of LSS-422, which does not have active elements, and it is practically impossible to go wrong.
Older models of Locus L 025 antennas are supported by LSA 417 reinforcements with a different method of mechanical fastening and are not affected by circuit design.

Antenna booster LSA 421(LSA-071) for wide-range amplification of television signals and is installed in the Locus L012.20, L023.09, L023.12, L024.09, L108.00 antennas.
The booster has a noise coefficient of a little more than 2 dB, with a power supply of 20 mA at a power supply voltage of 12 V.

Antenna booster LSA 416 is installed for replacement in room antennas Locus L405.05

For television antennas Locus 024.09 and Locus 024.12, instead of two LSA 419 boosters, an LSA 839 booster board is available.

Feedback for SWA and LSA boosters

How to properly connect a “Polish” antenna

Please show me how to set up the TV and how to properly connect the Polish antenna (support required). Therefore, upon purchase, it was said that T2 is on the TV. However, when adjusted, there is no water channel. 12/14/2018, Ukraine, Dubensky district, village. Tarakanov.

To operate the antenna, it is necessary to select the correct model of the SWA booster, attach it to the antenna and connect it to the intermediate life block through a separator. In addition, the antenna design must be designed to ensure the shortest possible reception and is directed to the local TV channel that is transmitting.

Swa 49, which is good for practical noise displays.

Wide range antenna booster SWA- 555/LUX Eurosky It is installed in external antennas, antennas, networks or, as it seems, (Polish antennas), to strengthen the TV signal. It is important to use different models from the distance to the television center, which have a different strength factor and allow you to receive TV programs at a distance of 0 to 150 km from the television center. Wide range antennas S.W.A. The input support, which is indicated by the antenna design, is 300 ohms, the output support is 75 ohms, and the supply voltage is adjusted from 9 to 15 V and is designed to enhance the frequency range 49 MHz - 790 MHz. The supply of voltage to the wide-angle boosters is provided by adapters that are separated from each other to the housing, with a voltage at the output of 12V. Wide range antennas S.W.A. Designed to improve the level of the signal and compensate for losses in transmission lines. Such devices are produced using SMD technology with the latest low-noise transistors, which are manufactured by leading foreign companies - ITT, Siemens, Philips, etc. Stinks can occur in different designs of wide-angle antennas. However, under automated high-pressure control, broad-spectrum boosters have good reliability, and are always resistant to the influx of atmospheric agents.

At this time, the widest range of antennas includes SWA, WS, RA, RAE, GPS and others. There are different schemes of solutions that allow the simplest selection to achieve the necessary results in areas with different signal levels. In areas with a clearly good signal, use boosters with one amplification cascade (single-stage) SWA-1, SWA-1 /LUX, PA-2, S&A-110. In areas with insufficient signal strength, two-stage (two-stage) boosters WS-2, SWA-3, SWA-4/LUX, SWA-5 (SWA-6), SWA-7, SWA-8, SWA-9, PA-5 are used. , S&A-130, PA-9, S&A-140, PA-10, S&A-120, PAE-14, PAE-42, PAE-43, PAE-44, PAE-45, PAE-65, PAE-65TS, WA -031, WA-032, WA-041, WA-042, WA501S-1.

The table shows the technical parameters and characteristics of antenna boosters S.W.A. and their analogues pa, gps, pae. The noise coefficient and amplification coefficient are indicated in dB, the recommended distance to the television center is indicated in km.

Price for broad-skinned antenna SWA-555/LUX Eurosky

Upgrade of T2 transmitters in Ukraine.

The table contains information:

• Place of refurbishment of T2 transmissions.
• the average radius covered by the signal.
• numbers of TV channels of digital packages (multiplexes)

Digital TV tower to DVB-T2 standard.

Until June 17, 2015, internationally (Geneva 2006), Ukraine is required to switch completely to digital communication to the DVB-T standard DVB-T2. This is a plan for the development of the national television and radio information space. In our region, communications in analogue format are beginning to be connected. For a long time now in Ukraine they have been conducting communications in test mode DVB-T and DVB-T2 Digital standards. Standard DVB-T2 becomes the basis for the development and development of digital television in Ukraine.

DVB-T2 This is a different generation European terrestrial standard for digital terrestrial television. Ether is a hypothetical all-pervasive middle (the upper sphere of the wind). In addition to the first generation standard DVB-T, standard DVB-T2 divisions increase the capacity of the network by 30-50%, saving the main infrastructure and frequency resources.

Crimea, the middle of the transition to DVB-T2 you can see these:

• an increase in the number of channels of the broadcast package.
• the possibility of organizing regional (local) communication.
• Possibility of developing high-definition television
• variation of air frequencies.
• Available in all corners of Ukraine (covers 95% of the territory)
• It’s so easy to connect
• Vivid picture and sound quality
• All popular national TV channels are available
• Hope there is no monthly fee

Digital TV format DVB-T2- The most important of all today, until the very near future the whole world will come, since its capabilities are much wider than that of standard DVB-T. The main and unstoppable advancement of technology DVB-T2 This means that its functionality does not interfere with the broadcast of cost-free digital TV channels. In addition to watching 32 digital TV channels at high speed, you can immediately record your favorite programs for time-lapse viewing, stream movies from online servers, watch online TV, and listen to digital radio. U DVB-T2 The possibility of transferring a number of independent factors depends on the nature and structure of transport flows. The digital flow of the skin is located at its main flow - this is the name of the channel of the physical level of PLP. For this purpose, the function of forward processing of input data has been introduced. Standard DVB-T2 is fundamentally challenged by both the architecture of the system level and the authorities of the physical level, the legacy of which the adoption of DVB-T is absurd DVB-T2.

DVB-T2 characteristics:

• OFDM modulation using OPSK, 16-QAM, 64-QAM or 256-QAM groups.
• OFDM modes 1k, 2k, 4k, 8k, 16k, 32k and “32k ext”. The symbol time for 32k is around 4 ms.
• Everyday dry intervals: 1/128, 1/32, 1/16, 19/256, 1/8, 19/128 and 1/4. (For 32k mode maximum 1/8).
• Direct correction of errors (FEC) with cascading correction of LDPC and BCH codes (like DVB-S2 and DVB-C2).
• DVB-T2 supports different channel frequencies: 1.7, 5, 6, 7, 8 and 10 MHz. Moreover, 1.7 MHz is designated for mobile television.
  
• transmission in MISO mode using Alamouti circuits, so that the receiver combines the signal from two transmitting antennas.

DVB-T2 service capabilities:

• Rich channel multiplex.
• Standard definition SDTV television for 4:3 and 16:9 screen formats.
• Standard definition HDTV television station.
• UHDTV high definition television station.
• 3D television station in the DVB 3D-TV standard.
• Interactive hybrid television station in the Hbb TV standard.
  
• Video on demand.
• Teletext.
• TV Guide.
• Subtitle.
• Stereo sound.
• Dolby Digital sound.
• Volumetric sound.
• Multisound (vib_movie-movie).
• Digital radio.
• Synchronization of time and date with digital television broadcasts.
• Data transmission using the DVB-DATA standard.
• Direct and return channels link for interactive services in DVB-RCS and DVB-RCT standards.
• Broadband Internet access.
• Alert system.

Reception of digital DVB-T2 signal:

Reception of the digital signal can be achieved by a collective terrestrial or individual (outdoor or room) television antenna, UHF, which is connected to various receivers:

• LCD/LED TV with built-in DVB-T2 tuner.
• TV set-top box (receiver, tuner, receiver) DVB-T2.
• DVB-T2 TV tuner for computer.

Advantage of the digital signal DVB-T2 This means that the digital signal from the TV station is received by the UHF antenna and is transmitted without interruption, which improves the stability of the image and sound on TV receivers. Another advantage is the presence of image distortions associated with atmospheric phenomena. The digital signal of theft from this, and on the TV on the TV, you see images that are very hot. Despite the clear picture, you will receive five-channel sound. Plus, you will receive additional information EPG (electronic TV program) - it gives information about the streaming program and TV guide for 7 days. The broadcast is broadcast in multiple channels, which consist of five multiplexes, up to them: 32 standard channels DVB-T2(MPEG-4), doctors, 28 national and 4 regional TV channels. Further, we have plans to significantly expand the number of TV channels for the paid market; So, otherwise 32 channels will no longer be available without any subscription fee.

Infection with the digital standard DVB-T2 in Ukraine, 32 TV channels are available to viewers .

* TV channels whose broadcasts are planned to be transferred to high definition format ( HD).

** Regional TV channels: vary depending on the area and specific region.

Price for equipment for broadcasting in DVB-T2 standard