How to improve your television signal

Cable and broadcast television broadcasting systems are developing everywhere every year. However, despite the rapid growth of the network and the expanded capabilities of television equipment, the quality of the image on the TV screen is low. This is due to the fact that the reception of the TV signal of the antenna depends on various factors: proper installation, construction and shape of the device, distance to the repeater. Improve the quality of the image will help autonomous amplifying device or replacement of the receiver with a more powerful device. In this review, we will look at how to amplify the weak, unstable signal of a TV antenna.

What factors affect the deterioration of the television signal

Before studying radio innovations, it is necessary to analyze why the level of functioning of the receiver is low. Causes of interference and poor image quality can be:

• significant removal of the dwelling from the repeater;
• wrong television antenna selection;
• high level of natural noise;
• external obstacles for signal reception: high-rise buildings, trees, industrial buildings;
• cable failure;
• wrong transmitter orientation;
• the presence of metal objects near the antenna that can conduct electricity;
• TV signal distribution to multiple receivers;
• outdated technology.

Ways to increase the power of the teleantenna

1. Change the location of the antenna. As a rule, it is directed towards transmission tower.
2. Acquisition of an antenna amplifier. They are electrical devices that connect directly to the antenna and give impetus to the improvement of the received signal.
3. Expand the number of antennas for a clearer image installed at the highest point.
4. Change the device to a more powerful antenna for the TV.
5. Remove all objects and metal objectsthat may interfere with the reception of a TV signal.
6. Check TV cable for integrity. In case of short circuits or breaks, change it to a new one. For signal quality is important choose the right cable.
7. Create effect common-mode antenna array (SAR). It consists in the fact that identical receivers make up a complex system that operates on a common matched load so that the phases of the signal turn out to be the same.

Knowing how to improve the television signal, you can minimize the noise of the image on the screen and enjoy high-quality viewing, regardless of the distance from the television center.

Antenna booster

Advantages and disadvantages of antenna amplifiers

Like all radio devices, devices have their own advantages and disadvantages. The advantages of antenna amplifiers include:

• due to the operation of the device, even a weak television signal is received;
• minimum noise figure;
• Improved signal in a wide frequency band of several wave bands.

The main disadvantages that users may encounter are:

• overload of the device from powerful signals in the meter range of MV (49-230 MHz);
• self-excitation of the amplifier;
• the device is susceptible to lightning current currents;
• passive losses occur at the output.

DIY Amplifier

You can design a simple device that amplifies your TV signal for a TV with your own hands. Such a device has low power consumption, does not create significant interference, and has a frequency range up to 900 MHz. Low-voltage amplifier with a power of 2.7-5.5 V consumes 3 mA of current, it works very quietly.

The principle of operation is as follows. The input "1", which is shown on the chip, voltage is applied. Thanks to the resistor R1, an offset to the work zone is created. It is connected to the input "2". The output signal “6” comes in, while the amplified signal is removed from the node “3” and sent to the receiver. If the chip is correctly assembled, there is no need to configure it. By the way, the antenna for the TV can also do it yourself.

How to choose an antenna amplifier

For the right choice of antenna booster, pay attention to the following parameters.

1. Distance from repeater.This indicator should be in the range of 10-150 km.
2. Frequency range
3. The signal level at the output of the device. The best option is 100 dB per microvolt.
4. Device gain This indicator should be no less than 40 dB.
5. The type of device for which you want to amplify the TV signal.
6. Noise figure It is recommended not to exceed this parameter more than 3 dB.
7. Consumption current. The optimal value is 30-60 mA.
8. Location: on the receiver or near the device.

Note! For digital television, it is preferable to have a device with an indicator in the supply voltage of 5 V. If choose digital prefix DVD-T2 with this option, do not need to buy a power supply for the antenna amplifier.

Popular Amplifiers

To improve the quality of the image on the market of radio devices, various amplifiers are sold. In devices, you can adjust the gain. Most appliances have multiple outputs for connecting to multiple televisions.

TV amplification models

1. Televes 5523. The Italian company presented an improved device with 5 outputs. Due to the high gain of 16 dB, the radio engineering device reduces the level of steady noise, television interference.The device operates from a separate power source, which is included in the instrument package.
   
2. Terra HA123. The device guarantees a stable signal reception in a country or multi-storey building. An instrument with a gain of 28 dB effectively operates at different frequencies. The compact device of the Lithuanian company has a weight of 600 g. The noise factor is up to 30 dB.
   

Models for amplification of air and satellite signals

1. Gecen A05-02. The device increases the signal level to 19-21 dB. The operating frequency ranges for satellite TV are within 950-2400 MHz, terrestrial - 5-950 MHz. The power supply to the Gecen A05-02 broadband amplifier comes through a coaxial cable from a satellite receiver (read more about installing satellite TV). To receive the strengthened signal of radio TV, the additional power source is got.
   

2. Polish series amplifiers SWA. They are installed mainly on the "lattice" of antennas and have different amplifying factors. The frequency range varies from 49 to 790 megahertz. The supply voltage is 9 volts. Installation is carried out using a stud or threaded connection.
   

Various factors can negatively affect the level of the television signal. Modern radio-technological devices help to increase it.They have several advantages: mobility, high gain and a large selection of models. Thanks to the joint operation of the antenna and amplifier, you can watch TV in good quality.

The best TVs in 2018 according to buyers

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