Imagine the situation: sit with friends, watch football. But suddenly - trouble! The house antenna has broken (flopped). And the match is in full swing! What to do? The solution is simple - you need to use your hands and a little savvy! Homemade television antenna from beer cans will help!
Find the following in your home:
- Two empty beer cans of 0.75 liters.
- Non-metallic pin-shaped object about thirty to forty centimeters long (you can use a rolling pin, because the case is emergency).
- A few meters of coaxial cable (depending on the distance from the window to the TV) with a resistance of seventy-five ohms. Coaxial is a cable in which one core passes inside another. It is desirable that at one end of it there was a plug for connecting to a TV (since the antenna from beer cans is connected there).
- Tape.
- Soldering iron (preferably).
Start tinkering
Wash the cans. Now attach your cable core to each of them. It is preferable to do this with a soldering iron, otherwise your antenna from beer cans will cause interference. But if there is no soldering iron nearby, then you can just pinch the wires in the cuts on the lids of the cans. Now place the containers at a distance of seventy-five millimeters between the edges. Tape an electrical tape to your frame. It is also better to wind the wire to the frame so that it does not come off at the most inopportune moment. If there is no plug at the other end of the cable, attach it. Connect to the TV. Voila! Homemade beer can antenna is ready and working!
Device operation
Banks will catch satellite (!) Signal in a good frequency range. Within the city, the number of received channels will be quite large. The main thing is to successfully position the antenna, and this is the result of many hours of walking around the apartment with the antenna and climbing to all the cabinets. For convenience of fastening it is possible to place capacities on a wooden hanger. By the way, as an antenna for a radio, the device will not work.
A bit of history
This design was discovered by Donetsk radio engineers. Once they noticed that on the Kiev-Rostov relay line, Russian channels are being transmitted. Moreover, earlier only trial noise signals were transmitted through it. And the antenna for catching these signals was probably made from what was abundant in the laboratory - from empty beer cans. So this simple device appeared.
Why does it work
The question of the reasons for the work of such a straightforward design will be asked by many. Is radio technology so easy? Then why does the TV use a bunch of small and obscure details while the beer can antenna works so well? In fact, everything is not so trite. The point is in the successful coincidence of the cans and cable found in that fateful laboratory, when the resistance of 75 ohms fell on the cans of 0.75 liters. And the ideal distance between the banks was chosen at 0.075 meters. Here the laws of induction and interaction of the material with electromagnetic oscillations come into effect .
In general, use it! Now you can safely watch football without fear of chance!