There are many different reasons why a tablet or laptop doesn’t catch a wifi signal well. It is possible that the reason lies in the laptop itself, in which a weak antenna is trivially used, which does not allow using the Internet to its full potential, but most often the problem lies with the router itself. This is easy to verify, because if the phone, tablet, and laptop in the house do not catch the signal well, then the whole problem is in the transmitting device. Anyway, cheap routers with weak antennas often can not “break through” a concrete wall. In this case, sometimes it makes no sense to be surprised at a weak signal. To fix the situation, you need a Wi-Fi amplifier. You can do it yourself.
Ready-made wifi amplifiers
At least there are several ways to make a Wi-Fi signal stronger. The easiest option is to buy a ready-made amplifier. Such a device can transmit a signal through reinforced concrete structures and at a distance of up to 200 meters. In open space, such amplifiers transmit a signal for 2 kilometers. In addition, such devices can also receive a signal at large distances. By installing one at home (on the roof), you can catch up to twenty networks, and some of them may even be without passwords. As a result, the Wi-Fi signal amplifier will allow you to connect to the free Internet. A similar topic is now being actively discussed. Indeed, some users whose Wi-Fi doesn’t even reach the door remove the password and make their network accessible to these receivers.
Do-it-yourself wifi signal amplifier
There are many needleworkers who independently created amplifiers. Let's look at the most common and working options. You can make such Wi-Fi signal amplifiers with your own hands in just 10 minutes from improvised materials.
The very first and easiest option is to use the drive box. She has a perfect radius for our purpose. So, take the CD BOX and cut off the spire, but not completely. It is necessary to leave about 18 mm. Now we make small cuttings for fastening with a file on the spire.
The next step is the creation of copper squares. We are looking for a wire 25 centimeters long and make two squares of it by bending the ends. These copper structures are analogous to the antenna, we fix them on the spire of our box for disks and glue them.
The ends of the antenna must be soldered together and soldered to the coaxial cable that leads to our modem. At the bottom of this installation, put the CD, which will be here as a reflector.
Amplifier connection
Now that we already have an amplifier, it needs to be connected correctly. To do this, remove the cover of our router and look for a PCMCIA card with an antenna. Ideally, the old antenna should be unsoldered, and the new one soldered. Just keep in mind that when soldering at high temperatures, some thin wiring may peel off the board. However, the antenna can also be connected via the SMA connector, to which the old antenna is connected.
Done, now you can check the power of the just created wifi amplifier.
Beer can amplifier
In this case, we will focus not so much on the amplifier as on the signal reflector. The principle of the following construction is based on the concentration of the transmit / receive signal in a specific direction. That is, in order to get a stronger signal, the antenna will need to be directed to the place where the wi-fi signal is weak.
So, to begin with, find an iron can of any volume, cut the bottom and almost completely the upper part. But do not cut the upper part to the end, leave a small mount from the side of the hole. The router antenna will enter this hole.
So we get a cylinder that needs to be cut along, directly opposite the hole in the upper part of the can. So we have a smooth oval surface that perfectly reflects the waves. Put the whole structure on the antenna of the router and rotate it in the direction where you need to amplify the wi-fi signal.
It is worth noting that the effectiveness of this method is somewhat lower compared to the previous one. In this case, we do not amplify the signal, but only concentrate it in one direction. Most likely, in other parts of the room he will become weaker.
Which option is better?
If you do not have skills in electronics and do not know how to solder correctly and what to connect to in chips, then the idea of creating an antenna for a router is not good. At a minimum, you can make an amplifier using a beer can. It will work, but you should not expect high efficiency of such a device.
The second option is to buy a ready-made wifi amplifier for a laptop, which is sold in electronics stores. There are also quite a lot of such devices on Aliexpress, where they are not so expensive. In addition, you can derive additional benefits from the purchase of such equipment. Given the power of such a Wi-Fi signal amplifier, it can be used to catch many other networks, including networks with no password.
Software Methods
Do-it-yourself forums are being discussed at some forums. True, the effectiveness of this method can be safely called into question. After all, if the antenna on the router is weak, then no firmware or program installed on the computer can significantly amplify the signal. It is possible with the new firmware you can achieve a stronger signal, but the difference will be insignificant.
Conclusion
On this, the question of creating a Wi-Fi amplifier with your own hands can be considered exhausted. Of course, there are many other artisanal amplifiers like beer cans, but they are not much different from each other.