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There are various mobile phone signal blocking devices on the market, and there are various machines. Prices are also unstable. Maybe you once bought a cheap machine, but when it came time to actually use it, it was useless. In fact, when buying a 5G signal jammer, you don’t care about its price at all, because all major buyers can afford it. Otherwise, even if the useless machine is cheap, consumers will not have any practical effect if they buy it. When choosing a 5G signal jammer, you know it will definitely be used in this area. Let me introduce it to you.

Shielding signals can generally be divided into two types.

General mobile phone signal blocking.

The technical characteristics of general mobile phone signal shielding are mainly based on the shielding principle, using a large number of small and high-power devices to fight, and only staying on simple technical solutions.

Average cell phone jammers are much lower in price, quality, and efficiency than good quality ones. Is this because their components cost less? Especially in terms of temperature control, generally mobile phone signal shielding basically does not use temperature control technology. General mobile phone signal shielding will not reduce power to maintain its own problems under bad heat dissipation conditions, causing the machine to crash or spontaneously ignite. Therefore, it is not recommended for everyone to use general mobile phone signals. Although the price is favorable, it is recommended for users.

High quality cell phone signal blocking system.

High-quality mobile phone signal shielding technology, its technical characteristics are: using strong signal digital point frequency frequency hopping technology, the radiation is 150 times smaller than ordinary shielding technology; using outdoor shielding technology, the radiation power is reduced several times; using distributed antenna technology, using full frequency The antenna replaces the N-frequency antenna, is suitable for wireless extension, and lays the foundation for distributed antennas; uses distributed antenna technology to reasonably allocate shielding power, disperse power signals, reduce antenna radiation, and provide dozens of times the efficiency of eliminating dead-end leakage; China Mobile The unique 3G (TD-SCDMA) and 4G (TD-LTE) networks only shield the downlink pilot gap and eliminate the shielding of the signal source. This has been recognized by the Mobile and Radio Regulatory Commission and has also been reduced by dozens of times.

Average cell phone shields are much lower in price, quality, and efficiency than good quality ones. Is this because their components cost less? Especially in terms of temperature control, generally mobile phone signal shielding basically does not use temperature control technology. General mobile phone signal shielding will not reduce power to maintain its own problems under bad heat dissipation conditions, causing the machine to crash or spontaneously ignite. Therefore, it is not recommended for everyone to use general mobile phone signals. Although the price is favorable, it is recommended for users.

High-quality cell phone signal shielding is far superior in quality to ordinary cell phone signal shielding.

In today's high-tech world, wireless communications have become an important part of our daily lives and work. However, wireless communication equipment may have security risks, especially in certain environments or situations. For example, radio equipment such as drones and electromagnetic pulses may pose a threat to people's lives and property safety. In order to meet this challenge, the signal jammer for sale amplifier came into being, providing a strong guarantee for our life and work. So, what are the advantages of signal jammer amplifiers?

1. Efficient signal shielding

One of the main advantages of signal jammer amplifiers is their powerful signal shielding capabilities. It can effectively block various radio signals, including mobile communications, WiFi, Bluetooth, etc., thereby preventing the leakage of radio signals and avoiding illegal elements. This is of great significance for protecting personal privacy and business secrets, and preventing radio interference.

2. High power output

The signal jammer amplifier has high power output capability and can generate a strong electromagnetic field, thereby effectively interfering and destroying the normal operation of target equipment. This has a significant effect on offensive radio equipment such as anti-drone and electromagnetic pulse. By using signal jammer for cell phone amplifiers, these devices can be effectively prevented from posing a threat to people and property.

3. Easy to install and maintain

Signal jammer amplifiers usually adopt modular design, making installation and maintenance very convenient. Users can choose different modules according to actual needs to meet different application scenarios. At the same time, the signal jammer power amplifier has high operating efficiency and long service life, reducing the user's cost investment.

4. Intelligent functions

Modern signal jammer amplifiers also have intelligent functions that can automatically detect and block radio signals at specific frequencies. This greatly improves the efficiency and accuracy of the signal jammer and reduces the possibility of accidental injury. In addition, the intelligent signal jammer amplifier can also adjust the working mode according to different environmental conditions and target equipment to achieve the best shielding effect.

5. Environmental protection and energy saving

With the continuous improvement of environmental awareness, signal jammer amplifiers are also developing in the direction of environmental protection and energy saving. Modern signal jammer amplifiers use advanced power supply technology and heat dissipation design to reduce energy consumption and reduce the emission of harmful substances. This not only complies with environmental protection requirements, but also reduces users’ operating costs.

6. Strong adaptability

The signal jammer amplifier has a wide range of adaptability and can be used in a variety of different environments and occasions. Whether indoors or outdoors, in public or private places, signal jammer amplifiers can effectively block radio signals and ensure people's safety and privacy. In addition, signal jammer amplifiers can also be customized according to the needs of different industries and fields to meet specific application requirements.

In short, as an important radio equipment, the signal jammer amplifier has the advantages of efficient signal shielding, high power output, easy installation and maintenance, intelligent functions, environmental protection and energy saving, and strong adaptability. These advantages make signal jammer amplifiers play an increasingly important role in modern society, providing a strong guarantee for our lives and work. For offensive radio equipment such as anti-drone and electromagnetic pulse, the signal jammer amplifier has become an indispensable security tool.

Cell phone blockers are needed in many places, but many people don’t know how to install cell phone signal jammers. Some people think that the signal jammer can be connected directly to the power supply, but some people think that the frequency needs to be adjusted, and it is difficult to determine whether the signal shielding instrument is working, so let's look at the principle of jamming.

1. Adjacent channel interference

Adjacent frequency interference refers to signal interference at frequencies adjacent to the used signal frequency. Adjacent frequency interference is caused by imperfect receive filters, causing signals at adjacent frequencies to leak into the transmission bandwidth. Adjacent frequency interference can be minimized through precise filtering and channel assignment.

2. Near and far effect

This problem will become very serious if the base station of the adjacent channel transmits very close to the user receiver, and the receiver uses the base station signal of the preset channel, which is called the near-far effect.

3. Intermodulation interference

When two or more signals of different frequencies act on a nonlinear circuit, the signal outputs of the new frequencies will modulate each other. If the frequency only falls within the bandwidth of the receiver's operating channel, it will cause interference to the receiver and become mutual adjustment interference.

4. Blockage and interference

Any receiver has a certain dynamic range of reception. When the out-of-band interference signal reaches a certain level and the received power exceeds the maximum power level promised by the receiving dynamic, it will cause the receiver to be completely blocked, thus affecting the receiving function of the system. This interference is called blocking interference. Blockage will cause the receiver to fail to work properly, and long-term blockage may also cause the receiver to degrade.

5. Spurious interference

Due to the rolling characteristics of the emission filter, there is always a certain amount of out-of-band radiation, which is what we usually call emission spurs. Because spurious interference is emitted, it is called spurious interference.

Interference between mobile communication systems

1. In-band interference: CDMA directly transmits signals or directly acts as an in-band noise GSM receiver through cross adjustment and other methods, causing the sensitivity of the GSM receiver to decrease. This interference is divided into emission spurious interference and cross interference.

2. Out-of-band interference: When the out-of-band interference reaches a certain level, it will cause the receiver to be fully blocked, thus affecting the reception function of the GSM system, also known as blocking interference.

The use of cell phone signal blockers for sale makes our lives easier, but its signals are easily interfered, so we still need to adjust its frequency.

Currently, using a signal blocker for sale to block signals is a relatively effective method and will not damage electronic products. But how effective the shielding is depends on whether electronic products can still emit signals. How to test the effectiveness of the jammer? At this time, you only need to follow the following methods:

1. Test the shielding distance of the signal jammer. Don’t just try it with one or two network mobile phones and then be done. During the exam, cheating candidates use different mobile networks, especially 4G mobile networks. If the power is not enough, 4G may not be blocked.

2. Each mobile phone network must be able to meet the needs of small classrooms. To test the shielding effect after turning on the phone, there must be no signal on the phone within half an hour, and it cannot be intermittent.

3. If it is a signal jammer with a metal shell, touch the front and rear sides of the fuselage with your hands after turning it on for 1 hour. If the temperature is moderate and not hot, there is no problem. If it is very hot, it means it is not qualified. The continuous heating of the machine will cause the power of the jammer to attenuate. , unable to work stably, and prone to burns.

We need to test the effect of the signal jammer according to the above method and whether it can block various signals. Before use, you can use a variety of mobile phones to test and a variety of networks to test. Be careful to avoid interference when using it.

Signals can transmit information, but there are no signals in some special occasions, so using a signal jammer to shield signals in these special occasions is an ideal choice. It effectively identifies signals based on frequency and can be shielded. It can be said that its identification ability is very strong. Here is an introduction to how to use it:

1. Select the area where the mobile phone signal needs to be cut off, and place the signal jammer or cutter on the table or wall in this area.

2. After the installation is completed, turn on the power of the disconnector and turn on the power switch.

3. After the signal jammer for cell phone is connected, press the power switch cutter to start working. At this time, all powered mobile phones on site are in the search network state and lose the base station signal. Neither the calling party nor the called party can establish a call connection.

The signal jammer is indeed an ideal signal shielding instrument. With it, the signals generated by electronic equipment are automatically shielded. In order to achieve good use results, we must learn to master the correct use methods to achieve the effect of shielding signals.