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Maybe we all need to know that in many Chinas, there are no laws and regulations on data signal interference devices, but for our applications, we also need to know common issues, including maintenance of key parts, and where can I use them. Among the commonly used mobile phone signal shielding, it is strictly forbidden to use signal shielding to avoid phone harassment, mobile phone ringtones are prohibited, and GPS positioning system shielding protects car whereabouts, prevents tracking, and maintains personal privacy on site.

Based on more than ten years of customer feedback and our experience, here are some key points that should be paid attention to when using signal jammers. Please read carefully.

The interference radius of the signal jammer sold online may be related to the specific location you use it. Sometimes it cannot reach the required range, which may be affected by the surrounding environment. You should use a handy signal blocker, which protects your personal privacy.

Frequently Asked Questions about Portable Jammers:

1. It is strictly forbidden to charge the battery during use. When using, there is no need to charge the battery. When charging, there is no need to use the battery.

2. When the portable jammer is used for a long time, it is strictly prohibited to use it instead of the surface jammer.

Be sure to note:

1. Ensure that wireless antennas and other accessories are installed properly;

2. To ensure sufficient battery capacity, if the handheld display light turns yellow or bright red, it indicates that the switching power supply is out and the shielding effect is not as good as before;

3. The shielding effect depends on the surrounding environment. The interference effect on mobile phones used in suburban areas is better than that in cities. Due to the relatively large density of urban mobile base stations and the close distance between base stations, the urban mobile base subway station causes signals to be transmitted ( The areas that the jammer must block) are several times stronger than those in suburban areas;

4. Ensure that the mobile communication base station is more than 200 meters away:

5. When using a jammer, signals blocked by any metal or wall obstructions must not be transmitted between the antenna, the jammer, and the phone;

6. Magnetic field and strong radio wave environment will affect the application interference effect;

7. The installation height of the shield should be at the same level as the equipment you want to shield.

8. Long-term use of interference will lead to high-calorie food and harm the interference radius;

9. When the phone is on a call, the jammer is not easy to block the data signal (the data signal is very strong during a voice call);

10. The electromagnetic wave emitted by the shield is a high-energy material. It is normal for the high-energy material to accumulate and cause the equipment to become hot;

11. The signal of the mobile phone shows that the update of the grid map is lagging behind. You may have turned on interference but the mobile phone still shows the signal status, but it is actually unavailable on the mobile phone. Please follow the expected results:

12. To test the function of aps jammer, download the GPS signal detection software performance immediately to test the actual shielding effect, or start the car navigation software performance test:

13. WiFi jammer equipment with WIFl interference function will also block other household appliances containing WIFl, such as wireless speakers, speakers, monitors, etc.

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?

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.

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.

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.

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.

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.

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.

The function of cell phone signal jammer is to block signals. It is used in many occasions. The most common use occasion we come into contact with is in the examination room. Nowadays, information spreads very fast. With a mobile device, all kinds of information can be spread to every corner in an instant. For some occasions where information cannot be spread, mobile phone signal jammers are very necessary. The editor below will introduce to you the principles, functions and prices of mobile phone signal jammers.

1. Introduction to the principle of mobile phone signal jammer:

1. The principle of mobile phone (radio communication) is as follows: within a certain frequency range, mobile phones and base stations are connected through radio waves, and data and sound transmission are completed with a certain baud rate and modulation method.

2. Based on the above communication principle, the jammer scans from the low-end frequency of the forward channel to the high-end at a certain speed during the working process. This scanning speed can cause garbled interference in the message signals received by the mobile phone. The mobile phone cannot detect normal data sent from the base station, making it impossible for the mobile phone to establish a connection with the base station. Mobile phones show symptoms such as searching the network, no signal, and no service system.

2. Functional features of mobile phone signal jammer:

It only blocks mobile phone signals and does not affect the normal operation of other electronic devices.

It only blocks mobile phone signals in the examination room and does not interfere with mobile phones outside the examination room, let alone the base station.

Only the downlink frequency of the transmitting base station is blocked without affecting the uplink frequency.

Green and environmentally friendly, the electromagnetic field intensity is far lower than the national standard and has no impact on the human body.

Simple operation, install the antenna correctly, and it will run automatically when the power is turned on

3. Features of using mobile phone signal jammers

1. Select the area where the mobile phone signal needs to be cut off, and place the 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 equipment is connected, press the power switch disconnector 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.

4. Transmission frequency range of mobile phone signal jammer

(1)869 - 894 MHz

(2)925 - 960 MHz

(3)1780 - 1920 MHz

(4)2010 - 2145 MHz

(5)2300 - 2485MHz

(6)2515 — 2675MHz

(7)3400 — 3600MHz

(8)4800 — 4900MHz

(9)5125 — 5350MHz

(10)5725 — 5850MHz

Shielded frequency bands: CDMA800, GSM900, SCDMA1800, DCS1800, PHS1900, TD-SCDMA (Mobile 3G), CDMA2000 (Telecom 3G), WCDMA (China Unicom 3G), 4G, 5G, 2.4G (WIFI), 5.8G (WIFI)

4. Price of mobile phone signal jammer

The price of a mobile phone signal jammer is 400 yuan to 4,000 yuan.

What is the price of a signal jammer, how does a mobile phone signal jammer work, and what functions does a mobile phone signal jammer have? The editor has given you a detailed introduction above. There are many use cases for mobile phone signal jammers, because the level of informatization is getting higher and higher now, and many hard-working research results are likely to be easily disseminated. This impact is very bad. . So it is very necessary to use a mobile phone signal jammer.

Cell phone signal blockers are mainly used in various examination rooms, schools, gas stations, churches, courts, libraries, conference centers (rooms), theaters, hospitals, governments, finance, prisons, public security, military areas and other places where the use of mobile phones is prohibited. It is understood that the mobile phone signal jammers currently on the market can limit mobile phone signals beyond 500 meters from the transmitting station. For example, Jinyuda's P501 jammer has a range radius of >20 meters. The shielding radius is adjustable and the coverage range reaches more than 30 square meters. The mobile phone signal jammer can only block mobile phone signals without affecting other electronic devices. Save electricity, the power is 12W--480W.

It looks like a WIFI transmitter, and the principle is actually the same.

When a mobile phone works, it operates within a certain frequency range. The mobile phone and the base station are connected through radio waves to complete the transmission of data and sound at a certain baud rate and modulation method.

Common mobile phone signal jammers on the market have operating frequencies: 869~894MHz; 925~960MHz; 1805~1880MHz and

Detailed explanation of how to crack mobile phone signal jammer

Various styles of signal jammers

1900~1990MHz, etc. The applicable frequency bands are CDMA800, GSM900, DCS1800, and PCS1900. It can control a range of about 40 meters in diameter, using a DC-DC converter input voltage and 5V output voltage.

After 3G signals were launched, the working frequency bands of signal jammers for sale on the market today have also been upgraded from the previous four frequency bands to five frequency bands. On the basis of the previous four frequency bands, an additional frequency band of 2100 to 2200 has been added for shielding. and interfere with the 3G frequency band.

During the working process, the mobile phone jammer scans from the low-end frequency of the forward channel to the high-end frequency at a certain speed. This scanning speed can cause garbled interference in the message signals received by the mobile phone. The mobile phone cannot detect normal data sent from the base station, making it impossible for the mobile phone to establish a connection with the base station. The mobile phone shows symptoms such as searching the network, no signal on the mobile phone, and no service system.

So how to crack the mobile phone signal jammer? ,

Detailed explanation of how to crack mobile phone signal jammer

first method

cut off energy supply

To put it bluntly, this thing relies on power supply to operate. If you cut off the power, it will just become a decoration.

Of course, if you feel unable to cope with the pressure and investigation from the school and the Education Bureau, you can also choose power stations, substations, transformers and wires.

The second method

physical damage

The last middle school was based on the inability to cope with the pressure and investigation from the school and the Education Bureau. If you have a way to deal with it, choose this one. It doesn't matter if it is blocked or not, just smash it to pieces.

Third method

This method is more euphemistic. If you have a strong relationship with a light and powerful background but still cannot deal with the pressure and investigation from the school and the Education Bureau, you can choose this method. The working function of the mobile phone signal jammer is based on those few antennas and antennas. To achieve this, all you have to do is to disassemble it. You only need a screwdriver to achieve this. As long as the transmission of the antenna is cut off, it is a pure waste of electricity. After all, physics is not learned for free, and this method is very simple to operate!

Compare how a cell phone signal booster works to an antenna: The booster receives the cell signal from a base station and sends it to the cell network. You can forget about issues like limited range, dropped calls, and slow data rates when you have a cell phone signal booster. Therefore, a cell phone signal booster is your personal supply of high-quality cellular network.

Cell phone signal booster will help your cell phone work at a high level. This device improves the reception of signals, so you will enjoy the perfect working of your phone. Signal boosters can be used in many places, including offices, houses or apartments, cars, buses and other places. We guarantee there will be no missed calls when the cell phone signal booster is on.

Cell phone signal boosters work with almost all cell phone carriers, but we would like to mention that you need to check if your preferred signal booster is compatible with your cell phone carrier before buying one. You need to remember that before purchasing, you have a trial period during which you can check the booster. It should be mentioned that if your voice is clear, then the dealer will lie to you because the voice quality and signal reception are not the same. Furthermore, we would like to emphasize that cell phone signal boosters have no negative impact on your health.

Companies in a certain industry work very hard to become a leader in the industry, thereby providing customers with better products and increasing corporate value. As a cell phone jammer manufacturer, topsignaljammer has been specialized in the research and development, production, sales and service of jammer products for 4 years. It has won market recognition with its excellent products and professional services, and has also won praise from market peers. At the same time, it has also achieved the rapid development of the enterprise.

If you want to engage in the production of products in the security and confidentiality industry, the first thing you need to do is to have your own patented technology. Topsignaljammer has been working on jammer technology and products for so many years. It is one of the earliest mobile phone jammer manufacturers in the industry and has a variety of patented technologies. It develops and produces more than 10 types of jammer products, and each category has many different models of subdivided products. No matter what needs customers have, they can find one in topsignaljammer's rich product line. A jammer that suits your needs. Even if there is no finished product that satisfies the customer, topsignaljammer can provide them with customized jammer product solutions, produce customized products to meet the customer's special requirements, help customers solve problems, and achieve mutual growth.

Jammer products are products with specific application functions and application places. As an essential tool in the security and confidentiality industry, its product quality must be guaranteed, and it must adapt to the needs of the continuous development of current communication technology and undergo continuous upgrades and functional enhancements. , thereby ensuring that the shielding effect of the product continues to be effective and ensuring safety and confidentiality. Excellent jammer manufacturers not only start with hardware and improve the technical level to improve the quality and application effect of signal blocker hardware products, but also constantly research new communication technologies and their development trends, and constantly update products to make their products in the market. Maintain advanced technology in terms of performance. Professional and excellent mobile phone shielding manufacturers in terms of service will continue to improve themselves, provide customized jammer solutions based on actual changes in customer needs in the application industry, and provide customers with systematic and complete security and confidentiality solutions. The solution solves customers' worries about secret theft and eavesdropping, without any hidden dangers of security and confidentiality.

Common cell phone signal jammers on the market have operating frequencies: 869~894MHz; 825~960MHz; 1805~1880MHz and 1900~1990MHz, etc. The applicable frequency bands are CDMA800, GSM900, DCS1800, and PCS1900. It can control a range of about 40 meters in diameter, using a DC-DC converter input voltage and 5V output voltage.

Before purchasing a jammer, there are several important factors that should be considered:

1) Band frequency.

The correct frequency to choose depends on the device you want to block. To prevent cell phone reception, people should use cell phone jammers to block cellular frequencies, so GSM, 2G, 3G and 4G LTE are used in new smartphones. If you don't know what frequency your phone transmits, the only thing you have to do is find its technical specifications on the Internet or elsewhere. Otherwise, you can always buy a frequency meter which will display the specific transmit frequency.

2) Interference range.

The effective shielding radius range is the interference distance. Actual interference distance will vary based on signal strength and location of use and charging conditions.

3) Equipment cooling system.

Don't use the shield while charging or it will burn out the shield since it doesn't have a built-in fan which may damage the shield. Additionally, potential overheating of the shield can cause its performance to degrade, in addition to being harmful to its internal components.

signal jammer

In order to block the new 4G mobile phone signals in the market, more and more 4g mobile phone jammers have been invented and now they are popular among people who need to cut off the 4G signal to achieve a peaceful state. And this 5-antenna handheld 3G 4G full-range mobile phone jammer is one of the best 4G mobile phone jammers, which can block 4G (LTE) and 4G (Wimax) signals. This type of signal jammer has several advantages.

First, it can block not only 4G LTE and 4G Wimax signals, but also CDMA, GSM, DCS, 3G signals. This is the perfect, powerful shielding device out there.

Secondly, you can select which frequency bands you want to block. If you don't want to block one or two bands, you can turn them off and leave the others on. At the same time, cell phone jammers can still interfere with other frequency band signals.

Common cell phone signal jammers on the market have operating frequencies: 869~894MHz; 825~960MHz; 1805~1880MHz and 1900~1990MHz, etc. The applicable frequency bands are CDMA800, GSM900, DCS1800, and PCS1900. It can control a range of about 40 meters in diameter, using a DC-DC converter input voltage and 5V output voltage.

Before purchasing a jammer, there are several important factors that should be considered:

1) Band frequency.

The correct frequency to choose depends on the device you want to block. To prevent cell phone reception, people should use cell phone jammers to block cellular frequencies, so GSM, 2G, 3G and 4G LTE are used in new smartphones. If you don't know what frequency your phone transmits, the only thing you have to do is find its technical specifications on the Internet or elsewhere. Otherwise, you can always buy a frequency meter which will display the specific transmit frequency.

2) Interference range.

The effective shielding radius range is the interference distance. Actual interference distance will vary based on signal strength and location of use and charging conditions.

3) Equipment cooling system.

Don't use the shield while charging or it will burn out the shield since it doesn't have a built-in fan which may damage the shield. Additionally, potential overheating of the shield can cause its performance to degrade, in addition to being harmful to its internal components.

signal jammer

In order to block the new 4G mobile phone signals in the market, more and more 4g mobile phone jammers have been invented and now they are popular among people who need to cut off the 4G signal to achieve a peaceful state. And this 5-antenna handheld 3G 4G full-range mobile phone jammer is one of the best 4G mobile phone jammers, which can block 4G (LTE) and 4G (Wimax) signals. This type of signal jammer has several advantages.

First, it can block not only 4G LTE and 4G Wimax signals, but also CDMA, GSM, DCS, 3G signals. This is the perfect, powerful shielding device out there.

Secondly, you can select which frequency bands you want to block. If you don't want to block one or two bands, you can turn them off and leave the others on. At the same time, cell phone jammers can still interfere with other frequency band signals.