The Development of digital television - a necessity faced by all over the world. The analog signal is, of course, applies to large, in comparison with digital zoom, range but the image quality and sound with increasing distance to the transmitting antenna deteriorates. The way out was only one – to encrypt the signal so that it can accept and process tens of kilometers away from the broadcaster without any loss of quality. So the choice fell on the digital way of information transfer.
For more than 60 years of analogue television was the only means of delivery of news, movies, entertainment programs into the homes of millions of viewers around the world. If the receiver, ie the TV is close to the repeater, the signal and sound are of acceptable quality. When you remove the need for signal amplification of different antennas. The farther away the transponder, the greater must be the antenna. At a distance of 50 kilometers, these receiving antennas reach enormous proportions, as a multi-storey building. All for a few channels of mediocre quality.img alt="UHF antenna for digital TV dvb t2" height="337" src="/images/2018-Mar/22/da90b2efd6e230895ca40589c742c077/1.jpg" width="600" />
Finally, in 2009, after many experiments with different formats were launched in the ether of modern digital TV DVB-T2. Immediately, a number of questions. Users of cable and satellite television nothing's changed, but the recipients of the analog signal, a new problem arose. To decode the digital signal, a TV with integrated digital signal, or the console. The cost of the latter reaches $ 50, not everyone can afford.
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The Question is partially solved with the help of state subsidies, and perhaps in the next few years, digital television will completely replace analogue.
The Quality of digital TV signals, like analog, depends on the distance from the repeater. The difference is that an analog picture with bad reception of the signal will spread, and the sound sizzle. In digital television image is either completely lost, or will be displayed on the screen in rectangular blocks. That is for good reception of digital TV signals also need the antenna, but not as bulky as in the case of analog signal.
The Television signal is distributed in two ranges-metre (English designation VHF) and UHF (UHF). The first does not allow the signal to propagate over large distances, its waves do not cope with the obstacles in the form of buildings, walls inside the apartment. So most of the channels broadcast in the UHF band. Accordingly, for good reception you will need a UHF antenna for digital TV DVB-T2.
All antennas for the reception of digital television antennas are UHF, and VHF. Thus, they can be divided into the enlarged group – indoor and outdoor.
Both kinds of antennas can be both passive and active. The latter has a built-in amplifier that allows you to capture a weak signal. But it is more narrowly focused, it is necessary to send to the source. Passive amplifier does not have, but receives signals from all directions for subsequent feed to the signal amplifier in the TV.
Before you can configure the antenna, it is necessary to choose. The professional approach to installation is to measure the signal level using a portable sensor. It will be very useful in areas with dense buildings where the signal goes directly from the relay, but is reflected from the terrain or goes from multiple relays at once. After receiving the signal characteristics you need to study the manual to antenna to the reception quality was assured.
If it is not possible to use a portable gauge, it is possible, using General guidelines to select the antenna by trial. The recommendations are simple. For apartments in the area with sparse development would be a regular but high-quality indoor antenna for DVB-T2. In the area with dense buildings need to use a indoor antenna with signal amplifier. In an open area, that is, in cottage settlements, country houses, already requires the use of an outside antenna. Opportunity free replacement of goods in the store, you can customize several models of antennas until you find the right.
Before installing a UHF antenna for digital TV DVB-T2 should be setup to receive signal. Connecting the antenna output to the TV or the STB to decrypt the signal, you need to point the antenna in the direction where the repeater. Then you must perform the automatic channel tuning from the menu of the device. Will be checked the entire frequency range.
Turning on any channel, if the quality is insufficient, it is possible by slowly turning the antenna to find the ideal position where the signal is best. Usually the device for the reception displays the signal strength for each individual DVB-T2channel. Do not think that the position is ideal for a single channel all the others will be in sufficient quality. By setting one channel, you need to go to the next and so on until all the channels will not be broadcast.
If the receiver is in the automatic setup did not find any channel or found less than half, in this case how to set up the antenna? It should be rotated 180 degrees to receive the reflected signal. This often occurs in residential areas, where a large number of houses is interfering with my signal.
In an open area the antenna should just send to the repeater to automatically configure the DVB-T2 channels on the receiver of the signal.
After successful configuration of the channels, the result should be fixed, that is, to secure the antenna in that position where the signal reception was the best. Indoor antennas are usually installed on the cabinets, cabinets, but it's not aesthetically pleasing. Stand modern antennas provide space for fastening screws and bolts that can be installed directly on the wall.
Outdoor UHF antenna for digital TV DVB-T2 are mounted on brackets or supports. The supplied external antenna is usually a tool that will allow you to securely mount an outdoor antenna on the support. When exterior antennas are used in apartments, usually the connection is performed outside the accommodation, on balconies or external walls. Then, as in the case of indoor antenna, you will need to drill several holes in the wall for secure attachment.
A few More comments regarding the work of the UHF antennas for digital TV DVB-T2. Depending on weather conditions (even time of day) the reception quality of the signal may change. Therefore, the antenna mount must provide for the possibility of its rotation tuning for better signal reception.
Proper selection of the antenna will allow you to enjoy digital quality television signal. Network DVB-T2 is constantly evolving with new channels. This is a great alternative to cable or satellite television as it does not require a subscription fee.
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Alin Trodden - author of the article, editor
"Hi, I'm Alin Trodden. I write texts, read books, and look for impressions. And I'm not bad at telling you about it. I am always happy to participate in interesting projects."
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