topsignaljammer's blog

Install using:

1. Make sure the antenna and other accessories of the signal jammer for sale are installed correctly;

2. Ensure that the mobile base station is more than 200 meters away;

3. The shielding effect depends on the surrounding environment. The interference effect of mobile phones used in suburbs is better than that in cities, because the density of mobile base stations in cities is larger and the distance between base stations is closer, causing the signals emitted by urban mobile base stations (where the jammer needs to be blocked) to be stronger than in the suburbs. multiple times;

4. When using a jammer, there should not be any metal objects or wall obstructions around the antenna to block signal transmission;

5. The strong magnetic field of the signal and the strong electromagnetic wave environment will affect the interference effect;

6. The installation height of the jammer should be as high as possible and at the same level as the device you want to shield;

7. Long-term use of the shield will cause high heat and affect the interference radius;

8. When the phone is on a call, the jammer does not easily block the signal (the signal is very strong during the call);

9. The radio wave emitted by the shield is a high-energy material. It is normal for the high-energy material to accumulate and cause the machine to heat up;

10. The signal on the mobile phone indicates that there is a certain lag in the refresh of the grid. You may have turned on the jammer but the mobile phone still displays the signal condition, but in fact the mobile phone cannot be used. Please follow the actual effect;

11. To test the function of the GPS jammer, please download the GPS signal detection software to test the shielding effect, or turn on the car navigation function to test;

12. WIFI jammer devices with WIFI interference function will also block other appliances with WIFI, such as wireless microphones, speakers, monitors, etc. Please be careful to stay away from these wireless devices when using them.

Maintenance:

1. When the shield is not in use, it should be stored in a dry and ventilated place to avoid long-term exposure to salt spray and harmful gases. Signal blocker;

2. When the jammer is working, do not put other objects on it or disassemble the antenna, so as not to affect the effect of the jammer and damage the host;

3. Mobile phone signal shielding antenna with external antenna - it cannot be screwed wrongly, it must be screwed up according to the frequency;

4. The mobile phone signal jammer should be installed away from high temperature and humid places. When using the jammer outdoors, pay attention to waterproofing;

5. Do not use a completely sealed box to cover the outside of the mobile phone signal jammer in order to hide it. This will affect heat dissipation and cause damage to the machine;

6. The antenna must be installed on the jammer and then connected to the power supply;

7. The shield should be placed in a well-ventilated place, try to avoid large objects, strong heat sources and strong electromagnetic sources to maintain the shield effect and work for a long time;

8. If the power supply of the mobile phone signal jammer is not industrial grade, remember not to turn it off 24 hours a day, as this will shorten the life of the power supply and the machine;

9. When wiping the surface of the shielder, avoid using chemical solvents and avoid water entering the machine;

Looking at ancient and modern times, at home and abroad, cheating has occurred in all examinations in the past. It is just that as skills improve, the methods of cheating are constantly updated and changed. Nowadays, with the development of technology, more and more people use mobile phones to cheat, which has become an issue that examination management departments pay more and more attention to. Cell phone signal jammers are currently a proactive preventive measure in major examination centers.

Mobile phones have indeed brought convenience to people's lives, but as the mobile phones remain with us, a lot of inconveniences have gradually emerged. Schools do not allow cheating during exams. With the emergence of mobile phones, students have begun to learn to use mobile phones to cheat, but what should they do if they cannot completely eliminate the existence of mobile phones? Gas stations are also places where mobile phones are not allowed and safety accidents may occur, but what should we do if we cannot completely restrict customers? What should I do if my cell phone ringtones are most taboo during a conference or forum lecture and I can’t confiscate them all? It can be seen that mobile phones are not only beneficial, but also add a lot of troubles to people's lives. At this time, I need a machine that can block mobile phone signals, that is, a signal blocker for phone.

The special "mobile phone signal jammer" for the examination room is a high-tech product that can actively prevent cheating cases in the examination room. The working principle of the mobile phone signal jammer specifically for examination rooms currently seen on the market is as follows: when the machine is working, a spherical invisible electric fence with a diameter of about 40 meters is formed around it. The mobile phone signal is in a vacuum, that is, the mobile phone cannot receive external signals and cannot send signals to the outside. At this time, all mobile phones placed in the electric fence are in a malfunctioning state, and the prompt tone of the mobile phone when making an external call is "· Temporarily unavailable.

The blocking frequency of the special mobile phone signal jammer in the examination room is: (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

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

Its characteristic is that it only blocks all types of mobile phone signals and does not affect any electronic devices. In particular, the radio will not affect the English listening test.

Comparison between the application of "examination room special mobile phone signal jammer" and other preventive measures in the examination room

1. "Mobile phone signal jammer" is an active preventive measure: "Other preventive measures" are passive preventive measures.

2. "Mobile phone signal jammer" can actively control all mobile phones entering the examination room and prevent them from being used normally: "Other preventive measures" only monitor the use of mobile phones.

3. Cell phone signal jammer” is to force the cheater to stop; “Other preventive measures” is to catch the cheater on the spot.

5G signal jammers are built to block the working of communication equipment. The device uses the frequency at which the mobile phone operates, so it cannot affect the use of the mobile phone by receiving signals from the base station. If you want to disable the normal functions of your mobile phone, just install a mobile phone signal jammer, and the mobile phone will stop accepting calls and messages within a certain period of time.

A cell phone signal jammer is a unique device. It will assist you against 5g, UMTS, CDMA, GMS, PHS internet. You can carry a cell phone text jammer with you because it's compact and easy to hide. The built-in rechargeable battery allows you to use the text signal jammer on your phone for 5 hours. The device has an antenna through which you can adjust the blocking radius. This mobile phone signal jammer is safe because it has no radiation source and will not harm human health.

The 5G signal jammer is useful for everyone because it is a smart device. For example, cell phone signal jammers are particularly suitable for colleges and universities. If the teacher turns on the cell phone jammer in the classroom, using the cell phone jammer can ensure that cheating will not occur during the exam. Students' cell phones will be blocked from working and they will not be able to receive information about the answers. In addition, mobile phone signal jammers can help bosses control employees' work. As a result, your employees are less likely to be distracted by work information.

So, where can 5G signal jammers be used? The application fields of mobile phone signal jammers are still very wide. Some confidential organizations, government agencies, universities, etc. can learn more about them in detail.

1. Various large, medium and small examinations

Fairness and fairness are the fundamental rules of social development, and life requires facing many exams, ranging from elementary school to junior high school, junior high school to high school, and as large as this year's college entrance examination, civil servant recruitment and other level exams. In order to better prevent students from cheating, in various large and medium-sized examinations, mobile phone signal jammers and other methods must be used to block the signals in the examination room, so as to achieve the goal of being unable to communicate with mobile phones. Online requirements can also be a good way to guard against students' cheating practices.

2. Government agencies and enterprises

Government agencies, enterprises, etc. also have requirements for 5G signal jammers. The frequency of reporting work by government agencies, enterprises, etc. can be said to be very high. In order to allow participants to focus more on the conference and further promote the learning and training spirit of the conference, it is also necessary to pay attention to the use of mobile phones. When leading cadres report on their work, they turn on the mobile phone signal jammer to block the data signal. The leading cadres talk happily and the people below listen attentively.

3. National defense areas, cells, and detention centers

In some areas that require strict control, such as military bases, prisons, detention centers, etc., the level of confidentiality is very high, and mobile phones should be strictly supervised. In areas such as national defense areas, prison cells, and detention centers, shielding data signals can greatly prevent the possibility of leakage.

In addition to the three major types of 5G signal jammers described above, in other areas where phone calls are strictly prohibited, such as gas stations, petrochemical plants, hospitals, etc., the effect of installing mobile phone signal jammers is also very ideal.

product description:

At present, data signals are almost everywhere, and all electrical equipment will be surrounded by them. When the mobile phone is not used, the impact of these heavily surrounded signals on other electrical equipment is minimal. This is because when the mobile phone is not used, there is no communication between the mobile phone and the base station, and there is no communication between the mobile phone and the base station. It is unlikely that sudden changes in signals will occur. The electrical equipment is surrounded by a relatively stable magnetic field, which is a static magnetic field. The impact of this static magnetic field on the electrical equipment is almost zero.

When using a mobile phone, there is data communication between the mobile phone and the base station, which generates random sudden change signals, causing a dynamic magnetic field to be generated around the electrical equipment. This dynamic magnetic field signal, Sudden changes in electromagnetic interference can be induced magnetically, which can easily lead to neurological disorders in electrical equipment.

When the mobile phone starts up and rings, it can generate enough kinetic energy to cause a slight flame and spark discharge, which is likely to cause a fire accident. Relevant departments such as petroleum industry, chemical industry, and security have clearly stipulated that mobile phones are strictly prohibited in gas filling stations, and the implementation of wifi signal jammer equipment is currently not ideal.

The equipment at the gas station is all controlled by computers. The signal will affect the normal operation of the equipment and cause measurement failure. What’s more important is that flames will appear on the phone during the dialing process, which is very easy. Causing a fire accident and causing an explosion at a gas station. Therefore, the use of mobile phones at gas stations, which are important areas for fire safety, is not only prohibited within the website, but also does not require the use of mobile phones within two or three meters of the gas station. In addition, gas filling stations should set up a clear sign that calls on mobile phones are strictly prohibited, and increase publicity on the importance of safety knowledge, so that everyone understands that making calls on mobile phones in gas filling stations is definitely a violation of the same industry.

There have been several fire accidents across the country caused by the use of mobile phones. A major accident occurred at a gas station in Henan Province when a driver used his mobile phone while refueling, causing an explosion and resulting in many casualties. There have also been several fire accidents and emergencies caused by cell phone use at gas filling stations in Shenzhen, Chongqing and other places. The risks caused by using mobile phones at gas filling stations have attracted the attention of all parties. Relevant departments in Beijing, Hubei Province, Inner Mongolia Autonomous Region, Guangdong Province, Henan Province, Shandong Province, Jiangxi Province, Sichuan, Chongqing City and other places have proposed the use of wireless signal jammer equipment at gas filling stations under their jurisdiction. The headquarters of Sinopec Corporation and China National Petroleum Corporation have already taken the lead in using wireless signal shielding equipment at gas filling stations in some areas.

Every year during the college entrance examination, the school will have network problems, such as mobile phone disconnections and slow Internet speed, because the school has turned on the cell phone jammer. If we think of cell phones as handheld two-way radios, radios are subject to interference, and cell phones are no exception. Like any radio, cell phone signals are subject to interference.

In this article, Topsignaljammer will talk to you about how cell phone jammers work.

interference principle

Jamming a cell phone is like jamming any other type of radio communication. Mobile phones communicate with their serving networks through base stations. As a cell phone user drives down the street, the signal switches from one cell tower to another.

Frequency ranges of the three major operators

We know that wireless communication uses electromagnetic waves to communicate. The functional properties of electromagnetic waves are determined by their frequency. Our mobile phones must emit electromagnetic waves that meet the requirements in order to connect to our communications operator base stations. Different communication systems use different frequencies so everyone is calm and doesn't interfere with each other. The basic principle behind cell phone jamming devices is to emit the same radio frequencies as cell phones. Because the frequencies are the same, mobile phones cannot distinguish which signal is a normal base station signal, thus achieving "interference".

Noise covers traditional sounds.

When a base station attempts to connect to a mobile phone, it emits high-powered "noise" whenever there is a machine on the same frequency as the mobile phone. You will find that the signals emitted by your mobile phone are too complex to recognize, so you will refuse to communicate on your mobile phone. Early signal jammers can only block one set of frequencies, such as 2G, while complex jammers can block several types of networks at the same time, such as 2/3/4G. How is this multi-network interference achieved?

Actually, it's quite simple. In a looping manner, the interference frequency bands corresponding to the three signals are played repeatedly, covering three frequency bands at a time, and the intervals between loops are very small, so that the mobile phone has no chance to speak and can only sit quietly.

multiband signal jammer

2/3/4G are all covered, but what about Bluetooth and wifi? It doesn't matter, it can still be solved. The jammer has evolved again, adding Bluetooth and WiFi frequency bands to the scanning range, so that several common communication methods in society are completely covered. Many people do not understand the differences between Bluetooth, Wi-Fi and mobile data. They all seem to be wireless communication technologies. In fact, the main difference between them lies in the frequency band. In mobile communication technology, 2G mainly works in the 900-1700MHz frequency band, 3G works in the 1900-2100MHz frequency band, and 4G works in the 2300-2500MHz frequency band. Bluetooth and WiFi work at 2.4GHz.

The current main principles of signal shielding and signal jammers are to emit huge noise in the frequency band used by mobile phones, disrupting the normal signal reception and transmission of mobile phones. This small object is not only used to prevent cheating during exams, but is also often used in politics and the military to prevent terrorist attacks. However, signal jammers are not just like shopping for groceries. They are not just purchased and used casually, otherwise they may be illegal.

First, you need to explain to the jammer sales manufacturer the place you need to shield and the size of the range. The most important point is whether there are mobile phone signal transmission towers built by operators within three to four hundred meters. These will affect the choice of jammer. type. Find several, compare prices and qualifications, and choose the best.

How to choose the right cell phone signal jammer?

1. Shielded frequency band: Before purchasing, you need to understand which signals you want to block. Ordinary mobile phone signals (234G) can be selectively blocked. If you only block 2, 3G or only 3, 4G, this can be done before leaving the factory. adjusted. However, Texin's mobile phone signal jammer uses full-band shielding. If users need to block a certain signal, they only need to install the corresponding antenna on the machine.

2. Applicable places: Regarding the places where shielding is used, if it is used in indoor places, the shielders generally suitable for examination rooms, conference rooms, offices and other spaces are of the same type. Gas stations need to use explosion-proof and high-temperature resistant shields; if it is used in outdoor open areas, , a medium-power signal jammer is required to achieve the appropriate distance.

3. Appearance: The appearance of the signal jammer for sale can be divided into external antenna and internal antenna. Generally speaking, the external antenna has an external antenna and extends outward, so it occupies a larger space than the internal antenna. One thing; precisely because of the antenna extending outward, the effect of the external antenna is more stable.

4. Power size: Jammers can generally be divided into low power, medium power, and high power, with power ranging from 3W to 100W. When we recommend users to choose a Texin mobile phone signal jammer, it will be based on the area to be shielded.

5. Shielding range: The shielding range is directly proportional to the power. Generally, low-power signal blockers are commonly used in examination rooms. One classroom is enough to install one, and the shielding range is approximately 200 square meters; while for high-power jammers, The shielding distance can reach 300-400 meters, depending on the local field strength.

6. Volume: Generally speaking, the smaller ones are handheld and portable, relatively small in size and easy to carry; the low-power desktop ones are generally not very large, similar to a small laptop; the high-power ones are Relatively bulky, the trailer type is very large.

7. Power supply: The handheld one has a built-in lithium battery. After the power is used up, just use the power adapter to charge it; the desktop examination room uses a 220V voltage supply, and the vehicle-mounted one generally uses a 12-36V voltage supply.