Instructions

Pay attention to the location of the antenna. Important role in signal reception, the height at which the antenna is located plays. It does not matter at all whether it is about radio or television. To strengthen the indoor antenna, place it as high as possible. If the antenna is telescopic, for best reception signal, it must be fully disclosed.

See where the antenna is pointing. If there are obstacles between it and the signal source, the reception will naturally be poor. Try to position the antenna so that there is no large tree, tall building, power line, or any other structure in its path that could seriously interfere with signal reception. This way you can amplify the antenna.

Use an antenna booster to make the indoor antenna more powerful. This is a special device that facilitates signal reception. Also try using additional grounding. The antenna power will hardly change from this, but the signal will be clearer. Any antenna is an open oscillating circuit. The larger the area oscillatory circuit, the greater the ability to receive a signal it has. Any long wire can serve as an antenna. Clip it to your indoor antenna... This will increase its area and, consequently, power.

Use last resort if none of the above methods helped. Replace the indoor antenna with an outdoor antenna. An external antenna is much better suited to quality reception signal, especially since there is much more possibilities its settings. Aim the outdoor antenna in the direction optimal for signal reception. This saves you the hassle of constantly adjusting it, as is often the case with indoor antennas.

The quality of TV and radio signals does not always suit viewers and listeners. Moreover, there can be interference even when there is a seemingly powerful antenna. In order to improve the quality reception, the antenna needs to be tuned correctly.

You will need

• coaxial cable, portable radios or mobile phones.

Instructions

If the antenna is directional, try re-positioning it so that there are no obstacles between it and the signal source. Such obstacles can be high-rise buildings or other structures, power lines, and so on. You can try the exact direction to the signal source. To do this, you can use the help of an observer who monitors the signal at the receiver. To communicate with him, you can use portable radio stations or.

If you have a directional antenna with flat polarization (like "Wave channel" and similar), check the polarization of the received signal. Adjust it according to the received data. To do this, you need to rotate the antenna about the axis directed to the signal source. Most often, simply trying to rotate the antenna 90 ° is sufficient.

Efficiency antennas can be enhanced by an antenna amplifier. But in this case, the gain limit is set according to the noise level. To reduce their level, use a shielded reduction, that is, the antenna is best with the help of coaxial cable.

Efficiency antennas, especially when taken on long, medium and short waves ah, can be increased by installing additional grounding. It should also be borne in mind that the antenna must be matched in impedance with the input circuit of the radio receiver. That is, it must be connected with the type and cable recommended in the instructions for the receiver or.

note

Long, medium and short wave antennas can be long wire lengths. It is also recommended to set the suspension points of such antennas based on the highest volume the desired stations. That is, it is necessary to change the position of the antenna.

Helpful advice

If it comes about indoor antenna, then the best solution there will be an installation of a stationary external antenna. This will dramatically improve the reception quality. It is also recommended to connect portable mobile receivers and TVs during their operation in stationary conditions.

An ultrashort wave receiver has become commonplace for a long time. We use the radio at home, in the country, and even in the car. But with distance from the broadcasting station, the signal quality deteriorates noticeably. It is not always possible to install an effective receiving antenna, so the solution to the problem may be to use an antenna amplifier. If you know how to handle a soldering iron and understand the fundamental electronic circuits, you can make such amplifier do it yourself.

Instructions

Check out schematic diagram antenna amplifier. It is made on a low-noise transistor providing a gain of about 20 dB. At the input, low-pass filters with a cut-off frequency of 115 ... 120 MHz and a high-pass filter with a cut-off frequency of 60 ... 65 MHz are connected in series. This allows you to amplify the signals of broadcasting stations operating in the VHF range.

List the required parts. In addition to the transistor, you will need several resistors and capacitors, as well as inductors. The parameters of the elements are shown in the figure for step 1.

Take the transistor type KT3120A or KT368A (the second option is less preferable). It is advisable to use imported capacitors in the device, similar in parameters to domestic K10-17. Resistors of MLT and C2-33 types will be quite suitable for the amplifier. Wrap the coils from the PEV wire using a mandrel with a diameter of 4 mm. Coil L1 contains 3.5 turns and L2 contains 4.5 turns of wire.

If you plan to use amplifier in the car receiver, add two relays and an additional power filter to the circuit. When power is applied, both relays turn on amplifier between the antenna and the receiver. When the power is turned off, the input of the receiver is connected to the antenna. Car amplifier option be sure to provide metal case.

Prepare for mounting device elements printed circuit board made of fiberglass, foil-clad on both sides. The pattern of the printed tracks can be different (depending on the layout of the parts you choose). Leave the other side of the board metallized and connect with foil along the contour to the common conductor of the upper side. Make the board for the automotive version of the amplifier more elongated so that you can easily place the power filter and relay on it.

Assembled amplifier connect between the input of the receiver and the antenna socket, making the connection as short as possible with a shielded cable. When installing the device in a car, place it near the receiver in a shielded casing.

Check how effectively the device amplifies the signal. If necessary, reduce the capacitance of the capacitors and increase the inductance of the coils (but not more than one and a half times). Please note that in an urban environment where the signal strength of radio stations is high, the antenna amplifier should be turned off to avoid signal distortion.

Sources:

• antenna amplifier make

To improve the quality of the received image and "catch" previously unavailable channels, it is not necessary to buy a new one powerful antenna... Antenna reception capacity depends on different external factors, from the form and design, changing which, you can adjust the image quality.

Antenna location

The quality of the TV signal directly depends on the location of the antenna. Concrete walls, metal fences and structures greatly interfere with the signal transmission, therefore, most often it is located outside the house, on the wall or. If you know where the nearest transmitting tower is, the antenna should be turned in its direction.

Antenna redesign

A special TV signal amplifier can be connected to almost any antenna. It operates on a 220 V network; you can buy an amplifier in most electronics stores. For the right choice it is important to know some parameters: the noise figure (it should be as low as possible, preferably no more than 2 dB), the gain Ku (calculated based on the presence of branches and its length).

Most often, the antenna design is thought out taking into account standard search broadcast signal... It can be changed with any conductive metal object: wire, cable, balcony dryer, central heating radiators, etc. Aluminum and copper items with a large surface area are best suited. On the other hand, metal objects not in contact with the antenna interrupt the signal.

Some antennas require special setting before use. You should check if the correct frequency range is set to receive this or that signal.

In-phase lattice effect

If you take several identical antennas and space them horizontally and in such a way that the phases of the signal are the same in them, then you can achieve its significant amplification. For example, if a single antenna gives a factor of 7 dB, then a double one - up to 10 dB, consisting of four parts - up to 12 dB, etc.

Basic rules of the in-phase lattice: parts can be purchased or made independently, but they must be the same. It is important that the "floors" and "rows" are completely symmetrical, with the same length of lines, cable jumpers. For fixing, frames made of insulating materials, such as wood or plastic, are used.

For watching television in the country or in small settlements usually use a TV or satellite dish. Satellite allow you to view a large number of channels in digital and HD quality, and conventional televisions receive terrestrial digital TV. As a rule, these are 20 digital channels.

But sometimes it happens that the signal is interrupted, the image is distorted and noise on the screen. This can be due to various reasons:

• problems of broadcasting itself;
• problems with the receiving equipment;
• weak signal.

V the latter case can you try your television antenna... However, remember that doing this will also increase noise and interference. Therefore, you can first try to improve the signal by reducing losses.

Varieties

Satellite dishes, also called dishes, vary in diameter. The larger it is, the better quality reception. A converter is installed on the plate itself, which transmits the signal to the receiver. And there are also signal amplifiers.

Varieties of satellite dishes:

TV antennas are:

1. Indoor and outdoor, depending on the place of installation. Indoor rooms are suitable only for areas of reliable reception and in the absence of significant obstacles in the signal path.
2. Active and passive. In the first case, we use active amplifier signal connected to the electrical network.
3. According to the range of received waves, all-wave, meter (MW) and decimeter (UHF) are distinguished. Digital broadcasting in Russia it is conducted at decimeter frequencies, so the UHF antenna is enough.

How much quality signal at the TV, the following factors affect:

• remoteness from the broadcasting tower;
• construction and material;
• active or passive amplification;
• connection loss.

Reduction of losses

To improve the signal from a television or satellite dish you can try to reduce losses in the system:

Signal amplification

You can amplify the TV signal as follows:

1. In the case of a room, place it as close to the window as possible and preferably higher. Make sure there are no obstacles in the signal path.
2. Raise the external antenna to the roof or higher to the facade so that reception is not hampered by buildings or terrain.
3. Aim the outdoor antenna correctly. This recommendation is also valid for a satellite dish. Signal problems are often simply due to incorrect positioning.
4. You can try extending the antenna with a piece of wire.
5. Create an in-phase array design from several identical antennas, placing them horizontally and vertically so that the signal phases in them are the same.
6. Replace the antenna with a more suitable design and type.
7. Install a signal amplifier.

To decide how to amplify the signal, refer to simple rule: if the tower is less than 30 kilometers away, then any external passive antenna will do. If the signal is bad, then the problem is within the system, hardware, connections, or improper wiring. If the distance to the repeater is more than 30 km, then use an active amplifier:

• The further the distance, the more gain you will need.
• Choose with the lowest noise figure, more precisely, it is better to pay attention to the "gain / noise" ratio.
• Pay attention to the voltage of the device. If you increase it, then you can increase the gain.

In the same way, you can strengthen the signal and the satellite dish. There are also combined amplifiers that work both non-terrestrial television and satellite antennas. If you are familiar with the theory and practice of radio electronics, then you can assemble an amplifier for a satellite or television antenna with your own hands; there are many schemes on the Internet and special manuals for this.

Install the amplifier as close to the antenna as possible. But remember that if you install it outside the room, then it will not last long, most likely no more than a year. Due to unfavorable weather conditions it can oxidize and stop functioning properly.

If your satellite dish used to work normally and suddenly there was interference, then you can improve the signal with your own hands in the following ways:

1. Check the serviceability of all elements of the system, perhaps some equipment or part has mechanical damage, dirty or rusted.
2. The location and direction of the antenna may have been lost. In this case, it must be redirected as it was before.
3. Check for obstructions in the signal path. It can be stuck snow, leaves, branches of a grown tree, or a new tall building.

If you initially have problems with image quality, replace the plate with one with a larger diameter. Consult your TV operator about compatible equipment and correct installation.

Thus, most of the methods and recommendations are universal and can improve the signal of both satellite and television antennas. When satellite TV such a concept as the distance to the source of the broadcast is not used, but the correct orientation, diameter and absence of obstructions are decisive. You can buy an amplifier or make it yourself, but remember that it is itself a source of noise and interference. And it is desirable to minimize the use of such devices. Share your experience in the comments if you have encountered problems with signal reception in the countryside, how and by what means did you manage to improve the quality of television reception.

Today it is difficult to imagine our life without television. We watch our favorite programs, films, news on TV. But the quality of the TV signal does not always satisfy our desires. What can be done to improve it?

First of all, of course, you can install satellite or digital television, but if this is not possible, then you can use the following tips.

What is needed

In order to improve the picture quality when watching TV with a conventional common antenna you may need a soldering iron and an alcohol-based cleaner, and you will most likely need a new cable. If you watch TV on a computer, you may also need programs to improve the signal quality.

What to do

Today, for those who want to watch television in high quality there are many possibilities. This can be the installation of a satellite dish, and connection digital television... You can also watch TV online here. But if you are not willing to spend on an antenna and pay a monthly subscription fee, but you prefer to watch programs on TV,
and not on a computer, then there is still a way out.

First of all, you need to examine the cable through which the TV is connected to the antenna. You need to make sure that there is not the slightest damage to the protective layer of the cable, and, of course, there are no breaks. If damage is found, as well as if the cable is already old enough, it must be replaced, because over time, it loses its properties. If the cable was already damaged earlier, and not replaced with a new one, but in the place of damage it was done additional connection, then it is better to completely replace it, because. any additional connection will degrade the signal quality. A soldering iron is useful if the cable is too short and needs to be extended. Of course, it is better not to do this, but simply buy and stretch the cable of the required length.

To improve the signal quality, you can also purchase and install an antenna amplifier. It is better to connect it via network filter to avoid the influence of power surges. The picture quality will be better if the amplifier is powered separately.

If you did not install additional antenna in the house, and you only receive a signal using a common external antenna, then buy and install it. To do this, you need to find out where the TV tower closest to your house is located and install the antenna on the side of the house that is closer to the tower.

Of course, if you live in multi-storey building then the signal quality will be better on higher floors. Therefore, the higher you can set your antenna, the better. You may need to ask your neighbors to help you to do this. If the antenna is already installed, then you can change its direction. Of course, the picture quality depends a lot on the TV as well.

If you prefer to watch TV online, then the picture quality can also be improved by using various programs... Of course, whichever antenna you install, this will only allow you to watch limited quantity channels. So if you want watch trk ukraine online television would be the best choice.

Good transmission quality makes watching TV an enjoyable pastime. There are many ways to improve your viewing experience. The choice is yours!

http://tvgold-online.ru/49-trk-ukraina.html

Noise at your favorite radio station, poor reception of TV channels in the country, or the disappearing voice of a friend in the speaker of the phone - all this is the result of a weak signal from the transmitter. An antenna amplifier is the solution to each of these problems.

The need to use a TV amplifier usually arises when the length from source to receiver is too long. Its use can also be caused by large quantity antenna connectors in the apartment, because each division of the antenna signal leads to its weakening. The purpose of installing an amplifier is simple - to improve the quality of the transmitted television signal. And if we are talking about digital signal? You probably already know that in order to receive digital TV in the most remote regions, as a rule, you need to use a good narrow beam antenna... And in order to preserve the quality of the signal before it gets into digital receiver, you need to align and strengthen it. This function is perfectly handled by a modern digital amplifier for the antenna. Such an amplifier, in addition to a high gain, is characterized by high resistance to external disturbances. A modern amplifier for DVB-T2 can serve both to amplify the reception from a conventional antenna, and to branch it into several outputs, or summarize signals from several antennas.

When should this device be used and what should be guided by when buying it? You will learn this from this guide.

What factors influence the deterioration of the TV signal

Symptoms of poor analog TV reception are not difficult to notice - the picture is distorted and disappears. As for the weakening of digital television, it is also easy to detect, but the only difference is that we are not dealing with ripples (snow) on the screen, but with breaks in the video stream. With weak broadcasting, the image can freeze, crumble into pixels or change color (usually green).

Signal degradation reasons

Each reason for the deterioration of the broadcast should be analyzed individually, since its reception depends on local conditions: from the direction in which the signal travels, what obstacles are in its path, from the presence of hills, tall buildings in your area.

Before you make the final decision to use an amplifier for your TV, let's get to know the most probable reasons deterioration of the TV signal.

• Maintenance of transmitters

In almost all cases of problems with TV display, their cause is on the user's side - incidents on the part of the sender are usually a break in the service of the transmitter, which sometimes takes several hours.

• Hardware malfunction

Outdoor antennas are exposed to external natural influences from day to day. Frost, heat, snowstorms and rain - all this the antenna can endure for years. If it is installed correctly. And if not, then one day moisture will penetrate the wires, splitters, amplifiers, and the problem will arise at the least expected moment.

• Wrong antenna

The most common reason for poor reception is too low level signal that comes from the antenna. The only one the right decision will use the best model of it - preferably directional, not necessarily with an amplifier. But the situation can be partially improved by installing the antenna higher.

• Too much high power signal

Excessive intake can also be a common cause of problems. Living next to a TV tower and using a high gain antenna, we can overload the signal at the tuner's input.

• Cables

Has a significant impact on the quality of the reception. An old one with tattered insulation, bought at a flea market, or even worse - from pieces that you scraped "over barns and bottom sections", can cause such a strong attenuation that it will absorb the signal from even a very good antenna even before it reaches the TV.

• Separators and connectors

The properties and number of used splitters also affect the quality of the picture. Each such passive element (i.e., one that is not an amplifier) ​​reduces the reception level. Careless installation of connectors, especially outside housing, can lead to rapid oxidation of the connections and, as a result, to significant attenuation of the TV signal.

• Noises

We are surrounded by a multitude of transmitting devices - relay stations, mobile phones, modems, routers, radios, alarms, etc. Radio waves from different frequency ranges are capable of interfering with TV reception. Even devices without antennas, such as microwave ovens, fluorescent lights, electric vehicles, are interfering.

Between the devil and the deep sea

Problems with TV reception are also overtaking people living on the border of signals received from two transmitters. In this case, it is necessary to find out which transmitter is stronger, and in which direction the antenna should be directed. A directional antenna will work best in these locations.

TV signal amplifiers

Check whether the antenna amplifier will help to "squeeze" more strong signal can be pretty in a simple way... You can connect any TV as close to the antenna as possible, and if the signal does not improve, this may mean that something is wrong with the antenna. However, if the picture on the screen improves, then you should think about buying an amplifier. But what is it?

Another feature is the way the amplifying circuit is powered. If your amplifier for a DVB-T2 digital television antenna requires a 5 volt power supply, then it is better to supply them via a cable from the tuner itself. It is worse when the amplifier "asks" for 12 volts. There are two possibilities here, both with future problems:

1. its power supply unit with a low-frequency transformer for a 50 Hz power supply network. The block is not as light as pulse blocks for recharging mobile phone, this unit does not give high-frequency interference, but produces low-frequency ripple, which over time can degrade the operation of the antenna amplifier;
2. power supply with pulse conversion, very light, practically does not heat up, does not give low-frequency ripple, but it is guaranteed to give high frequency interference which are not at all useful to the amplifier.

Choosing an amplifier for your TV

Not every antenna amplifier works perfectly, some of them have a lot of their own noises, others - even worse, are easily excited. Therefore, if you get a bad result with one antenna amplifier, you can try choosing a TV amplifier of a different model or with a different power supply method. For example, experiment to see if the antenna will work better if you apply voltage not from the "native" power supply, but from a digital tuner.

Antenna amplifier will not be able to help or even harm if:

• the reception level goes off scale beyond the limiting parameters of the amplifier;
• the antenna, in addition to the main signal, catches strong interference which the amplifier will increase;
• signal strength is extremely weak.

Amplification of an analog signal

The golden rule of good TV reception is that in order to receive good, it is advisable not to degrade it. To prevent this from happening, lay it correctly, monitor the health of the antenna and diagnose any depressurization in your apartment television network in time.

If the distance to the transmitting transmitter is long and the reception is very weak, then an additional signal amplifier must be installed.

If you receive analogue broadcasts on passive antenna, and distribute a signal to several receivers, then first you need to amplify it, and only then divide it according to directions. An active antenna splitter can do this.

Amplification of cable TV

Since its inception cable networks have not changed much. The local service provider receives quite a lot from the satellite television channels, forms a television package from them, and distributes it to our homes, taking payment from each subscriber. To reach our house, the signal passes through the intermediate trunk amplifier of the TV signal several times, enters the amplifier of the TV signal apartment building, once again intensifies in it, and is distributed to apartments. And yet, while this signal went from the premises of the provider company to our house, it weakened a little.

Methods for ensuring reliable TV signal reception

There is no ready-made recipe. Each case is specific and requires an individual approach. What to do in this situation? In many cases, the signal does not require maximum amplification, just as it is not required to amplify the entire "bunch" of signals.

To be sure which case we are really dealing with, it is necessary to accurately measure the signal level from the receiving antenna. This is necessary in order to understand whether we are receiving a direct or reflected signal (or even several), and to determine further steps.

One way to get reliable reception is to correct the direction of the antenna or its location in height, and often both. Sometimes it is enough to move the antenna mast a meter or two to get much better broadcast quality.

It is worth having a level meter on hand even when you need to make sure that the broadcast quality is sufficient and requires only additional amplification, or maybe you are receiving a strong but excessive signal? When strong signal you can choose the right antenna. It may also be enough to deliberately change the direction of reception or the location of the antenna to attenuate the signal while eliminating its reflected beams.

When receiving digital TV, it should be remembered that when strong radio frequency vibrations are superimposed on each other, you need to make a choice in favor of a passive directional antenna without using any amplifying elements. In this case, the amplifier to the TV antenna will contribute to intermodulation, which will lead to malfunctions and instability of the digital decoder.

Ways to amplify the power of a TV antenna

In fact, the ways to increase the power of a TV antenna can be correlated with medical approaches: apply "therapy" or go immediately "surgically". As for drastic measures, here the very first step is to change the antenna itself to a stronger and more expensive one. This can also include the purchase active antenna instead of passive.

But you can act more gently, especially if your antenna has served you the honor of honor for more than one year:

• experiment with the direction of admission;
• raise the antenna higher;
• if possible, clear the path for the signal;
• eliminate all "non-contacts", replace the cable;
• equip the antenna with a signal amplifier. Many external antennas have the technological ability to install an amplifying board, if it turns out that it is needed.

Using the antenna amplifier

Amplifiers of the TV antenna signal are the very first, after the antenna, to perform the initial correction of its level.

The type of device that is right for you depends on the reception conditions in your area and on the specific needs of the entire television set... If you need to amplify the entire RF bandwidth, you can use a fixed gain wideband amplifier. If, on the contrary, in your region on correct reception frequencies from the upper UHF band are significantly affected by high-frequency transmitters and there is interference caused, for example, by passing cars or a neighbor's lawnmower, then you will need a different amplifier model - with a fixed gain, but with a limited operating frequency range.
Modern amplifiers from different manufacturers have a fairly ergonomic shape, which, in fact, allows them to be mounted anywhere. This means you can use the amplifier in an existing antenna installation without having to disassemble the antenna. However, it should be remembered that due to the disturbance of the signal-to-noise ratio with increasing distance from the antenna, it is recommended to install it as close to the antenna as possible.

Criteria for the right choice

The selection procedure for an amplifying device is not particularly difficult. This equipment is designed to improve the quality broadcast reception, therefore, its choice will be determined, first of all, by the quality of the input signal, which will guide you to connect a device with a suitable gain.

But do not forget that when weak signal in your area, it is important to consider the antenna's own gain as well as its height. And the amplifier will be useful when the distance from the antenna to the decoder is significant, and you have to amplify the signal in order to reduce its loss in the cable.

When choosing a signal amplifier for an antenna, it is also important to be guided not only by its amplifying capabilities. The parameters of the internal noise of the device are equally involved here. Both the signal level and its quality at the very beginning of your home network will have a decisive influence on the correct functioning of the entire installation, ensuring clear and flawless broadcasting on your TV.

A good amplifier for a TV antenna can be powered by the voltage generated by the tuner itself - this gives a good chance for the final video quality. Therefore, it is better to purchase devices in which the microcircuit is powered by 5 volts.

Reception of digital TV signal (DVB-T2) in ultra-harsh environments.
In connection with the greyhound Tricolor decided to "finish off" the digital terrestrial TV in his country house.
The first (winter) attempt failed: it worked in cold weather, but at zero and above the signal was not enough. Reasons: in summer, the absolute humidity is much higher than in winter, a lowland near the river and a nearby forest. Let me remind you that the relief of the direction to the repeater gives a completely "closed interval", i.e. the signal should not pass the type... Relief with refractive ellipse attached. A
I bought a highly sensitive receiver (-82dBm), moved the antenna away from the house away from the forest (to the summer kitchen). Now it is 100 meters to the forest, but it was probably 20 m (an acute angle towards the repeater).
I bought and connected / extended 23-25 ​​meters of RG-6U cable.
I installed an antenna lightning arrestor at the receiver input. It would probably be necessary to put it at the output of the amplifier, but until the hands reach it. And at the input, the antenna amplifier has short circuit on direct current, therefore, I think it is well protected.
Result, in general, positive (compared to what it was before): at 650 MHz the signal strength is 80%, and at 722 MHz - 48%. On both "quality" - 100%, which - I do not believe. Of course, 48% is not enough, but it works. On the edge. When the receiver warms up and during the play, there are signal breakdowns ... Moreover, the antenna had to be very precisely aligned in the direction.
I did not like it, I decided to "finish off" further.
I put a second amplifier (ancient, from an old antenna) in front of the receiver in the house.
At the same time, it was necessary to defeat the excitation of the amplifier and the too strong signal.
A strong signal won with splitters, which is just right for me, since I want to multiply DVB-T2 around the house.
Both multiplexes now have signal levels above 90%. And the quality ... - see Note-3.
Liked.
Lightning protection:
Attached a meter thick aluminum lightning rod to the antenna mast from above, organized through an aluminum-copper adapter With his lower part(and not from the bottom of the mast!) a copper descent to the ground, as which I bought and hammered a galvanized pipe 1.6 meters under the antenna. A steel cable was welded to the same ground, to which it is tied antenna cable going from the summer kitchen to the house. Copper to steel pipe - through stainless washers.
Note-1:
It is assumed that the TV (at least) and the rest are grounded, otherwise there may be a pickup at the receiver input (up to 100-150 Volts), which, when the antenna is grounded and the antenna input is temporarily open, can (when connected) break through the mast antenna amplifier at the output. And this is not a theory, but the cruel truth of life.
Note-2:
It's strange that my signal quality indicator is almost always 100%. I do not believe!

Update as of July 11, 2015:
For the information of those who insist that the reception does not deteriorate in the rain.
The other day we had the wildest downpour. So, during it, the signal at 722 MHz completely disintegrated, and fell on 650 ...
It is clear, since I have a signal-to-noise ratio on the verge. And the antenna is not the most long-range ...
I scratched my turnip, knocked out the old antenna lying around, made 6 directors about 14.5 cm long (this is the length of the directors of the purchased part of the antenna), screwed it to the main antenna. After that, the signal level, deliberately roughened to 50%, rose to 65% (compared to the purchased antenna). How many in decibels, of course, is unknown ...
We are waiting, from the downpour!
Update as of July 21, 2015:
Antenna modification result:
Today we again had a very heavy downpour, both of my Tricolors (I temporarily have two antennas looking at 36E) turned off for 5-10 minutes, and my DTV TV did not for a second ...
Here, due to the amplification of the antenna itself, I raised the signal-to-noise ratio and therefore the signal ceased to be "on the edge" and the effect ceased to be noticeable. However, the signal level in the shower decreased from 91% to 72% (at the minimum point).

Now the antenna looks like this:

Supplement to the results of the finalization of the antenna:
There were heavy rains with thunderstorms. I noticed that at the moment of a distant lightning discharge, the image breaks down for 2-3 seconds ...
Note-3:
I bought a slightly different receiver of the same company for a friend and additionally made sure that the almost constant 100% signal quality on my receiver is a fiction. This new receiver"measures" is more or less normal. The quality on it (from the same antenna-feeder system) is 60-70%. By the way, he has different soft menus and controls.
Apparently, I will shake the manufacturer / representative to provide a software update, which is much better in terms of convenience.
Note-4:
Forum member about static electricity during a snowfall from the antenna to the 27 MHz band ( copper wire vertically):
Note-5: