Cell Phone Jammer Interfere With 3G 4G 5G Signals

Cell phone signal jammer (alias data signal jammer, data signal decoration isolator, data signal suppressor, data signal blocker, conference confidential information machine) is a new technology product carefully developed according to the specific conditions of China Mobile's communication technology, this product I came to the company to independently develop and manufacture it. It can reasonably shield the microwave heating data signal between the transmitting tower and the mobile phone. Because this product uses newly upgraded imported components, technical professional equipment, patch welding process, mass production of production lines, and high-efficiency and strict management capabilities, it ensures that the product has good quality, stable characteristics, and long-term durability!

Let's first understand what a cell phone jammer is. A cell phone signal jammer is also called a cell phone signal blocker, a cell phone signal blocker, and a secrecy device. Their working principle is to implement co-frequency electromagnetic interference to the wireless network on which mobile phone communication depends, so that the mobile network cannot communicate normally, so as to achieve the purpose of interference. The cell phone signal blocker only blocks cell phone signals and will not affect other electronic devices.

What are the important functions of cell phone signal jammers? With the widespread use of mobile communication technologies such as mobile phones and wireless phones, the economic and social development has been greatly promoted, and people's work and life have been facilitated. But at the same time, the unrestricted use of mobile communications such as mobile phones and wireless phones has also brought serious problems to secret-related units, and solving these problems will bring out the huge role of mobile phone jammers. So, what are these problems, mainly in the following aspects:

(1) Mobile phone leaks. A popular mobile phone in the market can be accused of becoming a "bugger". When the accused mobile phone enters important meeting places, secret agencies, securities, financial centers, companies and even private places, it will leak confidential information or personal privacy.

(2) Using mobile communication tools to cheat. Using mobile communication products such as mobile phones to illegally transmit test answer information in various test rooms, turning mobile communication products into cheating tools.

(3) Use mobile communication tools to commit crimes. Criminals use mobile phones and other mobile communication equipment to detonate bombs, destroy important military and civilian targets, and create terrorist activities.

(4) Improper use of mobile communication tools causes security incidents. In places where flammable and explosive substances are concentrated, such as gas stations (oil depots), chemical plants, etc., the use of mobile communication tools may cause explosions.

Jammer use. Mainly used in various examination rooms, schools, gas stations, conference centers, hospitals, prisons and other places where the use of mobile phones is prohibited. The shielding radius is adjustable and the coverage area is large. When installing a wireless signal jammer, in order to avoid the possible interference of the wireless signal jammer to some electronic devices, the following common devices should be kept as far away as possible: stereos, wireless microphones, radios, computers, TVs, Wi-Fi routers, etc. Choose a high-power machine or a low-power machine according to your needs. It can effectively shield all 2G, 3G, 4G, 5G and WIFI signals of Mobile, Unicom and Telecom.

The selection of 5G cell phone blocker is generally based on three aspects: according to the type of signal to be shielded, according to the output power size, and according to the shape of the machine.

Shielding devices can generally be used in a variety of examination rooms, courts, supervision places, international conference centers (rooms), government departments, military and other venues that must be strictly prohibited from entering with mobile phones. So how should you choose the most suitable signal jammer according to your own needs?

From the manufacturer's point of view, if the selection is unreasonable, there will be no actual effect after installation, which will easily lead to the return of equipment, wasting time and freight. Today I will teach you how to choose a 5G cell phone signal jammer that suits your needs.

First, the shielded signal is the wireless network signal sent by the local communication base station, in addition to 2.4GWIFI, 5.8GWIFI, VHF, UHF and other frequency bands. Such frequency bands can be composed according to different requirements, and different types of shields can be formed. Therefore, the first thing to do is to grasp the signal you need to block. The mobile phone signals that are blocked under normal circumstances are 2G, 3G, 4G, 5G and their 2.4G WiFi.

Second, the output power size of the jammer: generally divided into small output power, medium output power, and large power. Small output power: total output power 3W-80W. Medium output power The total output power is 80W-160W, and the power is large: the total output power is 160W-800W. In addition to the unique site requirements, it is generally not recommended to use a signal jammer with high power, which will seriously interfere with the signal transmission of the communication base station, and also have a certain degree of radiation to the body. In places such as standardized test rooms and conference halls, a 5G mobile phone signal jammer with low output power can be used. Even if a small output power cannot achieve the actual required shielding effect in some places, multiple sets can be used. method of shielding. In that way, the actual effect is better than the actual effect of applying a single output power or a larger power, and the radiation level is not so large, and at the same time, it can save the capital budget.

Third, the appearance of the jammer is not very different, it is only a difference in the design of the structure. From the top of the appearance, the jammer can be divided into an external antenna and a built-in antenna. For the external antenna, because the antenna is externally connected, the actual shielding effect is stable and takes up a little more space; while for the cell phone signal jammer with built-in antenna, the antenna is inside the shell, occupying a larger space. The total area is small and it is more convenient to use.

When the mobile phone is working, it is within a certain frequency range. The mobile phone and the base station are connected by radio waves to complete the transmission of data and sound with a certain baud rate and modulation method. The common mobile phone signal jammers on the market have the following frequencies: 869 - 894MHz; 925 - 960MHz; 1805 - 1880MHz and 1900 - 1990MHz, etc. The working frequency bands are CDMA800, GSM900, DCS1800, and PCS1900.

The cell phone jammer scans from the low-end frequency of the forward channel to the high-end frequency at a certain speed during the working process. The scanning speed can cause garbled interference in the message signal received by the mobile phone, and the mobile phone cannot detect the normal data sent from the base station, so that the mobile phone cannot establish a connection with the base station. The mobile phone is manifested as searching the network, no signal on the mobile phone, no service system, etc.

Therefore, mobile communication is also called cellular mobile communication. As far as the mobile phone in each cell is concerned, it communicates with the base station through the uplink frequency of the channel, and then transfers the signal to the MSC to communicate with other mobile phones or fixed phones. ;The radio frequencies received by the mobile phone are divided by frequency band:

GSM segment 925-960MHz, DCS segment 1805-1880MHz, CDMA segment 869-894MHz, PHS PHS 1900- 1990MHz, SCDMA450- 470MHz, wCDMA2110-2170MHz, TD-SCDMA2010- 2025MHz. Each frequency band is divided into many channels with a certain bandwidth. Each cell uses several channels, one of which is called the broadcast control channel, represented by BCH, and the other channels are called the traffic channel. In the standby state, the mobile phone starts the receiving circuit intermittently to receive the BCH in the cell where it is located. According to the field strength of the BCH signal, the signal bar is used to display the signal strength indicator RSSI on the LCD. When making an outgoing call, the first step is to ask the MSC for instructions through the BCH, and the MSC handles the calling or the called party. The MSC assigns a service channel to the mobile phone according to the channel status in the cell, so that the mobile phone jumps from the BCH to the service channel to realize the call. It can be seen from this that the BCH in the community is the medium and advance condition for realizing mobile phone communication. If the mobile phone cannot find the BCH in the community, there will be no network name and signal strength indication on the light screen LCD, that is, the mobile phone will be in no network, no In the state of network access, the mobile phone cannot realize the function of calling or called, that is, the mobile phone signal is equivalent to being blocked.

Mobile signal jammer is a mobile phone jammer that can effectively block 2G 3G 4G 5G network. It is a mobile phone signal digital blocker for mobile communication with high efficiency and high reliability. The product adopts advanced adaptive digital technology, high-efficiency HPA technology, and TD-SCDMA/TD-LTE synchronization technology. While achieving efficient shielding, it does not interfere with any operator's base station of any standard.