What is an amplifier for a 3G modem

The signal amplifier for 3G-modem makes it possible not only to significantly increase the speed of work with network resources, but also to provide a more stable signal. Sometimes the latter is even more important. It is difficult to argue with the fact that it is much more convenient to work with the Internet, which, although it does not provide very high access speed, does not lose the signal of the base station.

Ideally, of course, before using the amplifier for the modem, it would be good to determine what exactly caused the poor performance of network equipment. This would allow us to find a balanced solution that will provide an opportunity to optimally overcome the existing problem. However, more often such an accurate definition is probably not always possible, so the amplifier for 3G-modem, as a rule, is a device of a wide spectrum of action - a kind of compromise.

Why the Internet does not work well

In support of their words, we will list the main reasons that affect the quality of the wireless modem:

- The device catches not a straight line, but a signal reflected from the objects of the relief or buildings. Considering the accompanying absorption and distortion, in such a situation it is not always possible to achieve high speeds and a stable connection. Part of this can be solved by an amplifier for a modem.

- The equipment of the base station (operator's tower) is too far from the receiving point. This causes a natural decrease in its power due to the properties of the atmosphere. In this situation, an amplifier for a modem, which has sufficient efficiency, can completely solve all the problems.

- The nearest base station simultaneously serves too many subscribers, so its resources are not enough to provide a service of proper quality.

Solutions for better communication

Despite the abundance of suggestions for optimizing the reception of the signal from the base station, they can all be divided into five groups:

- Using an external antenna. Requires the design of the modem used to connect an antenna adapter - the so-called pigtail. A person who is able to accurately solder microelectronic circuits, can independently connect the connector to the device, though, while deteriorating the appearance.

- Application of the amplifier for modems of a special design, which does not require any connectors (contactless).

- Place the device in a sealed box and take it out to the roof or facade.

- Residual components of the device circuit.

- Amplifier for active modem.

The least effective solutions are the second and fourth. The most common use of an external antenna with pigtail. The cost of additional equipment is relatively low, and installation and subsequent configuration can easily be performed independently. Given the different antenna gain factors, you can choose the best solution, showing the optimal results in each specific case.

But the last point is unfamiliar to many, although the principle underlying the work of the active amplifier has been known for a long time, it is successfully used in various industries. The scheme is the following: an external antenna is carried out on the facade of the building, which is oriented according to the direction to the base station; Through a high-frequency cable with a wave resistance of 50 Ohm, the signal goes to the amplifying device - 3G repeater (repeater). Its internal electronic circuits increase the intensity of the signal captured by the antenna and transmit it via a USB cable or radio frequency to the computer. The disadvantages include the high cost of such a solution, almost 4 times higher than the price of any of the remaining options.