Active antenna. Antenna active television

To date, one of the sources of information is television. Of course, it is not as popular as the Internet, but it is used by many people. In every house there is a TV, not always one. With the help of it, everyone can watch news, exciting movies or exciting TV shows. In order to view them, you must achieve a good signal. For this purpose, an active TV antenna is suitable.

Kinds

They are divided into three types:

1. Radio antenna. It is intended only for car receivers.
2. Television. Serves for watching analogue or digital television.
3. Combined. Such models accept all types of signals, starting from the radio receiver and ending with navigators.

There is also another type of active antenna - satellite. This type is not very common among motorists because of the difficult tuning and high cost of equipment.

In addition, active car components are subdivided in the place of installation. It can be either external or internal. The first type is installed on the roof, luggage compartment or on the side doors. The main advantage is the quality signal. However, there are also drawbacks: they have large dimensions, low life, because they are subjected to mechanical and climatic influences. They are also difficult to install. To do this, you need to make additional holes in the body of the car, which spoils its appearance. Internal models are installed on the rear or windshield. They can have a different design and shape. Antennas are characterized by small overall dimensions. They are not subjected to external mechanical influences, as well as to climatic conditions. Therefore, the car retains its pleasant appearance for a long time.

Installation locations

The active antenna can be outdoor or indoor. The first type is installed on the roof of houses, so that the quality of the television picture is at the highest level. An active indoor antenna is used in a specific range, that is, not all locations will work the same way. Most users note this drawback: the detail is unevenly catching the signal, that is, outside the other room the TV will not show. Before installing it, you need to make sure that the apartment is in the area where there is a good TV signal.

What is the difference between the passive and the active?

So, all indoor antennas are divided into two types: passive and active. Representatives of the first type capture the signal with the help of its design. Their main advantage is that they do not need to be connected to the mains, and also to provide additional amplifying equipment. Many users note that when using passive elements there is no signal interference.

But not always such models can cope with their task. In this case, a room active antenna is installed. A better signal reception is achieved with the help of an additional electronic amplifier. Such a device can be installed in the body of the element or go separately. In this case, the active antenna is powered by an electrical network.

Like every device, the active part has its drawbacks. One of the main negative sides is a substandard signal. It is due to a substandard amplifier. Such cheap Chinese models are widely distributed in the market. The signal can also be distorted from a very sensitive amplifier. Distortion occurs in the zone of confident reception, where the use of an additional amplifier is not required.

Range of action

An active antenna can perceive both special ranges and capture any types of signals. Among consumers, all-wave devices are widely used, since they are convenient and capable of capturing a sufficiently large number of channels.

When using a indoor antenna for digital television, you need to purchase those models that capture specific ranges. In this case, each person will save significantly.

Recommendations for selection

Acquiring active TV antennas, it is necessary to pay attention to such criteria:

• Before choosing a model, you should evaluate the signal level in the apartment. Do not buy a device just because of the beautiful appearance.
• If the windows in the apartment go to the TV center, then you can install the antenna on the glass. In this case, the signal will be much better. Although these models are mounted on the glass, they perform the same job as external devices.
• If the distance to the repeater is more than ten kilometers, then it is not recommended to use active antennas. The signal will be weak, and the image and sound with interference. In this case, it is better to purchase an external structure.

Antenna active car

Standard built-in car antennas are characterized by low sensitivity. It decreases when exposed to mechanical damage. Such processes can lead to its antenna building. First, each driver does not pay attention to the antenna, as he listens to music, which is recorded on different carriers. However, she begins to bore. Therefore, there is a need to purchase a new part.

Antenna active car is used not only for radio tape recorder. Many drivers use it to watch movies or TV shows. In this case, you should buy a portable TV in the car , as well as a special TV antenna.

Features

This type of parts is used for those vehicles that make long trips. In large cities, the signal is good. It will deteriorate with distance from the radio tower. Even if the distance is small, the signal can be distorted due to uneven terrain, that is, mountains, hills, etc. Therefore, such a device as a TV-active antenna is sure to come in handy.

When the vehicle is moving along uneven terrain, the radio recorder captures the signal not from the radio tower, but from the distorted relief. He is not strong enough. To capture it, you need an additional amplifier, which is already built into the active part.

To counteract interference both in the city and outside it, such antennas can operate in two modes:

• For urban areas;
• For country roads.

In the first case, they can work without an amplifier, since its presence will create signal interference.

Connecting an active antenna

As it was said before, for the functioning of the mechanism it is necessary to connect it to the power network. This is one of the drawbacks. So, first you need to determine the connection point. Some motorists connect the device to the battery. However, this is not justified. In this case, the structure is permanently on. That is, when the car is idle, some amount of energy of the car battery will be consumed. Accordingly, it takes more time to recharge it than usual.

How do you still connect? To do this, there is a special connector for the car radio. This is the best option, since the antenna will function together with the receiver. In this case, the consumption of electric current will be moderately. There is another option. The antenna is connected to the ignition switch. The voltage is supplied when the ignition key is turned. Disconnection of the device occurs when the owner leaves his vehicle.

It is worth noting that the installation methods and procedures can be specified in the instructions. In order to be secure, it is necessary to check the structural details.

Manufacturers

After making the connection, it is necessary to check the operation of the antenna. Both options are suitable for all types of devices. The most popular manufacturers of active antennas are Alpine, Supra, Bosch. Thanks to an affordable price, it can be purchased by any motorist. The cost of an active antenna is in the range from three hundred to one and a half thousand rubles.

The purchase of this part is a rather troublesome process. The wrong model will not catch the signal, and the quality of the sound or image will suffer. Therefore, the choice of this element should be taken responsibly.

So, we found out what an active TV antenna is.