You will need
- - ski poles;
- plastic tube;
- - the screws M3;
- - nut;
- - washers
- - plastic clip;
- - dowels;
- - drill with drill bits;
- - screwdriver;
- - pliers;
- - wrench;
- coaxial cable;
- connector for your TV;
- - hacksaw;
- accessories for soldering.
Take the metal ski poles – aluminum or titanium. Make vibrators for a future antenna. Vibrators should be two, they have the same length. Decide what channel you watch. Length of vibrator depends on it. For 1-3 channels, it is 1000-1100 mm, 4-6 – 750 mm, 7-9 – 360 mm, 10-12 – 310 mm. If the length of ski poles is not enough, crystite tube of several pieces, connecting them with a metal tube of larger diameter. Suitable, for example, tubes of old cots. You can seal the vibrators and otherwise putting them on metal rods. But be sure to provide reliable contact.
Connect the vibrators with each other with the insulating tube. As such the tube can be used, for example, a piece of gymnastic Hoop. Suit and white plumbing pipe (black is not suitable, because it contains graphite, and accordingly, is a poor insulator). You can take a wooden tube, made of well dried or boiled in paraffin wood. The distance between the ends of metal tubes should be 6-8 cm
Departing 2 cm from the connected tube ends of the tubes, drill in each of the through holes with a diameter of 3 mm. This antenna can be connected to the TV if it has inputs for two-wire line. As the cable in this case, you can use lighting electric wire, which antenna is secured with two through-bolts, passed through the drilled holes.
But usually on modern TVs used coax connector. To connect the homemade antenna, you will need a matching device. Take a piece of television cable, equal in length to one vibrator. Connect the Central conductor on both sides of the vibrator with the screws. You got the so-called U-bend.
One-shoulder U-knee cut in half lengthwise and strip the braid and the cable core. Similarly prepare the other end of the cable that goes to the TV connector. Solder together all three segments of the resulting braid of the cable. Spike tape. Solder together all three Central veins. A matching device is ready, the antenna can be connected.
The antenna should be oriented perpendicular to the direction of the television center. It can be hung from the ceiling or on the wall using plastic clips. If the polarization of the wave vertical, this antenna should be put too upright. It is easier for horizontal installation, this antenna looks bulky.
Such an antenna can be made from strips of metallized film. The Central part is made of strips of plexiglass. Such an antenna can be mounted anywhere with self-adhesive tape.
Advice 2: How to make TV antenna
If you have any problems with the reception of television broadcasts, do not rush to spend money to buy expensive television antenna. There is a simple but effective way to make the antenna most of the available tools, without spending a lot of time on it.
You will need
- two liter cans of beer, TV-cable RG 6U, two screws, or screws, wooden hanger, soldering iron, solder, tape.
Thoroughly wash and dry the cans from the inside, not sticky dust. There is a perception that cans for the manufacture of TV antenna should definitely be preserved keys-openers. Empirically, it was verified that it is not necessary.
Manufacturer of TV antenna start cable preparation. To do this, carefully cut in two places of the upper insulating layer of plastic, approximately 10 and 15 cm from the end of the cable, and remove this piece of insulation 5 cm Under it exposing the copper coil you want to twist in the same vein.
The end of the cable is clear from all layers of insulation and shielding coil to the main veins, approximately 3-5 cm If banks are preserved openers, can be screwed and the core and screen to them, but this connection is less preferable, and it will affect the quality of television reception. One should not try to solder the cable to aluminum cans - nothing happens.
Banks at either end with a nail punch one hole slightly smaller in diameter than the prepared screws. Wrap one of them the Central wire, the second twisted earlier mine of the shielding winding three to five turns. Screw the screws in the punched holes and propagte place fit between the cable and these screws.
The best reception area, likely to be near the window or on the street. Based on this, measure the desired length of the cable (not vnatyag, but without a large supply), cut and mount this end of the cable plug to the antenna socket of the TV. Tape the Scotch banks to the hanger or to a wooden rail at a distance of 7.5 cm from each other.
Now you will just have to find the area of best reception and secure ready antenna with the TV, and then enjoy watching television programs.
Be extremely careful when working near the window to avoid falling.
Do not put the excess cable working antenna rings, it degrades the quality of signal reception.
Advice 3: How to improve television antenna
Image quality on the TV screen depends on the used antenna. Follow the recommendations that will help you to choose appropriate variant of this device.
You will need
- - the antenna amplifier and power supply therefor;
- - antenna splitter;
- - the antenna cable of 75 Ohms;
- - ohmmeter;
- solder and soldering;
- - materials for sealing the hole in the wall.
- - antenna connectors;
- antennas of various designs.
If your house is equipped with collective device receive radio waves, do not use an indoor antenna. Move the signal from the communal antenna to your television receivers with the help of CRAB splitter (splitter cable subscriber household).
If you cannot use collective antenna, verify the frequency ranges of the indoor antenna and the TV channels that she intended to take. Don't try to get a good picture of an UHF channel with the antenna of the reception of the metric wave and Vice versa.
Pick up experienced by the working length of the telescoping antenna. Remember that for high frequency channels it is not necessary to nominate all the tribes of this device receive radio waves. To degrade the reception of a television signal capable of both insufficient and excessive length of the antenna.
To connect the antenna to the TV, use only extension cords. Find the room position providing the best signal reception. If using an indoor antenna cannot get a clear TV picture, use an outdoor.
Install it on the wall in front of the TV, Secure the unit and place the cable into the room from rain. In a private house, secure the external antenna on the roof, but only if your home is located in the area of the lightning rod.
If you live in a fringe area of TV signal, get an antenna with amplifier. To secure the card to the two supplied screws and connect it to the coaxial cable. On the opposite side connect the special male plug that supplies the supply voltage for the amplifier and locked it into the TV. Plug and power supply included in the scope of supply of the amplifier.
Definitely obestochivaete equipment before starting installation work.
Use a 75 Ohm aerial cable. Otherwise, you will not get a broadcast quality image.