How to make an antenna from beer cans

Imagine the situation: sit with friends, watch football. But suddenly - trouble! The house antenna broke (zarahralila). And the match is in full swing! What to do? The output is simple - you need to apply your hands and a little ingenuity! A homemade TV antenna from beer cans will help!

Find the following in the house:

- Two empty beer cans of 0.75 liters.

- A non-metallic pin-shaped object about thirty or forty centimeters long (you can use a rolling pin, after all, an emergency case).

- A few meters of coaxial cable (depending on the distance from the window to the TV) by a resistance of seventy five Ohm. Coaxial is a cable in which one core passes inside the other. It is desirable that on one end of this there is a plug for connection to the TV (since it connects the antenna from beer cans).

- Insulating tape.

- Soldering iron (preferably).

Getting Started

Wash the banks. Now attach to each of them your cable core. Do this preferably with a soldering iron, otherwise your antenna from beer cans will interfere. But if the soldering iron is not around, then you can just pinch the wires in the notches on the lids of the cans. Now place the containers at a distance of seventy-five millimeters between the edges. Attach to your skeleton an electrical tape. The wire is also better to attach to the frame, so that it does not come off at the most inopportune moment. If there is no plug on the other end of the cable, attach it. Connect to the TV. Voilà! A homemade beer can antenna is ready and working!

Operation of the device

Banks will catch a satellite (!) Signal in a good frequency range. In the city, the number of channels received will be quite large. The main thing is to successfully arrange the antenna, and this is the result of many hours of walking around the apartment with an antenna and scrambling on all the cabinets. For ease of attachment, you can place containers 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 opened by the Donetsk radio engineers. Once they noticed that on the relay line Kiev-Rostov, Russian channels are being transmitted. And earlier on it only trial noise signals were transmitted. And the antenna for catching these signals was made, probably, from what was in abundance in the laboratory - from empty beer cans. So this simple device appeared.

Why does it work?

The question of the reasons for the operation of such an uncomplicated design will be asked by many. Is it really that radio technics is so simple? Then why does the TV use a lot of small and incomprehensible details, while the beer can antenna works so well? In fact, everything is not so trivial. The essence of the successful coincidence found in the fateful laboratory of cans and cables, when the resistance of 75 Ohm fell on the banks 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 take effect .

In general, use! Now you can safely watch football, without fear of accidents!