Digital DVB-T2 Antenna do it yourself

Digital television steps around the country, many buy TVs that already support this format. And who has the technique of the previous generation, you can buy a digital prefix () and connect it to your old TV that does not support. In general, the standing format allows you to watch television in digital format. But many sellers together with consoles and TVs, "hit" the so-called digital antennas, sometimes in price antenna reaches 3000 rubles. Although you can guys yourself with your own hands, make an antenna for digital television, and very cheap ...

Tip! Guys, by the way, television can be viewed at all without an antenna via the Internet, but for this you need another prefix -, read a really cool topic.

We continue the article ...

To make a digital signal, the so-called decimeter antenna is required. It is possible to make it literally from an antenna cable. However, it needs to be correctly calculated. If you do not want to read the article fully, you can find the right item in the table of contents.

What do you need for the production of antenna

1) We need a piece of an antenna cable, about 30 cm long.

2) Antenna connectors, the so-called F - the connector and the dad connector - mom.

F - connector and "Dad-Mom"

3) Tools: Knife, plumbing Calculator and necessarily a tape measure (well or a ruler).

Payment

On the main page, looking for a tab - "CETTV coverage map" and go to it.

tab "Capitu Caption Map"

Before us opened a digital television coverage map. We are looking for a nearest station for your city (I have Ulyanovsk, you score your city).

As you can see in my city, it is 56 channels - 754 MHz and 59 channels - 778 MHz.

Now calculate the length of the antenna. I will not go into complex technical formulas and terms, they do not quite need us. But to calculate the antenna, you need 7500 to divide into our frequencies.

That is: 7500/754 \u003d 9.94 cm, this is for 56 channels.

7500/778 \u003d 9.64 cm, this is for 59 channels.

Our antenna must be about 10 cm, and accurately - ((9.94 + 9.64) / 2 \u003d 9.79 cm)

For your city, you also need to withdraw the average length for your stations if you have several of them in the city. In the video, an article calculated an antenna for Ulyanovsk, and for Kazan.

Manufacture

1) Take a piece of the antenna wire and to start, we attach a F-connector at the end. We simply clean the cable and screw the connector so that the central wire is in the middle, and the screen (wiring and foil was in the mount), detailed (useful).

2) We postpone from our connector a couple of centimeters (it will be a kind of indent), then measure 10 cm and cut off the unnecessary cable.

3) Now from these 10 cm, we need to remove the plastic insulator and remove the "screen" (foil and minor wiring). You do not need to touch further, leave the cable in the insulator.

4) All our antenna is ready. You can try to connect.

Connection

You need to catch a good point of reception in the apartment, and not always enough to be inserted into the TV or the console. I have such a place near the window, so I inserted an extension cord into the prefix and inserted an antenna into an extension. So far, all this is not cleaned with me, for an example of work (therefore, the cable weighs), and the antenna itself is inserted into it.