A cellular signal booster is an extremely useful thing, but at the same time it is extremely expensive. The simplest option on the market will cost no less than 15 thousand "wooden" ones. Even if everything is bad with the signal, buying such a device in a store is choking a toad. Fortunately, making a simple, but at the same time quite effective cellular signal amplifier is not at all difficult. It is enough to have some materials on hand and to know a few important points.
Why is my signal so bad? Every user of a mobile phone and the Internet has asked himself this question at least once. The reasons for a bad signal can be very different. In the city, the question, as a rule, rests on the characteristics of the room where the receiver is located. The number and range of towers are much less likely to affect (if only because now in cities they are literally everywhere). By itself, reinforced concrete is a fairly serious obstacle to the incoming signal. As a result, there may be serious problems with the speed of the Internet, and especially with the purity of the voice signal transmission. Once in this situation, you should use an amplifier.
Option one
Amplifier - the device as a whole is not complicated. At the same time, it is worth a lot of money. The simplest and at the same time effective signal amplifier can be cut out in just a couple of minutes from an ordinary aluminum can and pulled over the router's antenna. Such an amplifier is called a reflector. Its task is extremely simple - to concentrate the signal at one point. All you need to do is cut off the top of the aluminum can and cut a piece of the sidewall. Then it should be installed on the antenna of the router.
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Option two
Another thing is to make an antenna amplifier. It is they who are sold today in stores. To create an antenna, you need a cable about 10 meters long, adhesive tape, wire 30-40 cm long (NOT copper!), a tube made of polymer materials about 20 cm long, a connecting block, a fastener for connecting blocks. First of all, the antenna itself is made from the wire in the form of two rhombuses. The ends must be bent inward and are subsequently used to secure the block. The connection of the cable through the tube will also be brought here.
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After assembling the device, one more important step remains. It must be fixed in some way outside the living space. It is best to install the antenna amplifier on the roof. As a last resort, you can put it outside the window.
If you want to know even more interesting things, then you should read about what is the best antenna to make from cable for digital TV.
A source: https://novate.ru/blogs/060520/54420/