What you need
To make the TV antenna, you will need:
- aluminium or copper wire;
- antenna connector;
- tree;
- 2 Bicycle rim;
Board;
plastic sewer pipe;
- plastic pipes;
- carpenter or locksmith tools.
The wire should be solid, but quite thick. Ideal TV cable but it is not always at hand.
If the television station close
In exceptional cases where the telecentre is located close to the reception site, to receive the signal can be just a piece of wire. Take a 1.5 m thick aluminum wire, strip one end about 1 cm, with a file will adjust the thickness under the Central socket of the antenna connector on the TV. Plug the wire into the connector. Turning the wire vertically or horizontally, bending it at different points, and empirically adjusting the length, adjust the antenna to a television station. This method is suitable when the distance to the television station does not exceed 1 km.
Universal antenna
In other cases you will need to make a special antenna. One of the main requirements for the TV antenna is its broadband. To make a broadband antenna of the "dipole" can be improvised. The antenna will consist of two vibrators. She was broadband, their area needs to be large. Take 2 of the rim from a Bicycle wheel with spokes and secure them in the insulating beam so that the distance between the edges of the rim was about 50 cm as a beam it is possible to use a piece of sewer of plastic pipe (preferably made of light plastic, it has better insulation properties), wooden Board (in this case, take care of the insulation, as wet wood can conduct current), any other insulating material of sufficient size and strength.
With screws or rivets make taps from each of the rims. Connect the taps to the TV via the two-wire line. This method is suitable for TVs with high-resistance input (200 Ohm). But most often the TV has a coaxial input on the 75-50 Ohm, to connect your antenna to this TV you will need a matching transformer. It is made from segments of coaxial cable. Connect it to the TV is also via coaxial cable. As vibrators dipole will fit not only the wheels from the old bike. Can be used, for example, aluminum sport hoops and any other items of suitable shape and size. Such an antenna has directivity, so it needs to direct at the television station.
