Военный эксперт объясняет, как пользоваться мобильными ретрансляторами

ЛТЕ (4G), GSM (2G), 3G mobile communication repeaters are very important for use in the Defense Forces. Ukrainian specialist and consultant in the field of military radio technologies, tech blogger Serhiy Beskrestnov (Flash) объясняет, how to choose and use the right equipment.

How the repeaters work

A range extender is a “box” that is powered by an outlet. On one side, a cable with an antenna is connected, which is directed to the operator’s base station, and on the other side, a cable with an antenna for indoor coverage is connected. The range extender amplifies the operator’s signal and the phone signal in both directions.

What is the difference between repeaters

1. усиление

For repeaters, the concept of output power is relative. They have a value of end-to-end gain. That is, how much “came” to the input from the operator’s station and how much “went” to the antenna at the output. The stronger the signal at the input, the better it is at the output.

All low-cost repeaters have approximately the same gain parameter. It is difficult to increase it because the signal from the output will drown out the signal at the input. This is the main nuance of operation, which we will discuss later.

2. Operating range

To begin with, all low-cost repeaters are broadband and will strengthen all operators.

In Ukraine, operators use many bands, and they may differ from place to place. These are the 900/1800/2100/2600 MHz frequencies. Therefore, if you are installing a range extender for your home, you can find out the range of the nearest operator’s station and save money by buying a single-band range extender.

But if you’re going to the front, you need a multi-band repeater. After all, you cannot predict where fate will throw you and