welcome to HISEA
source:Industry News release time:2020-11-30 Article author:sznbone Popular:Prison Jamming system
How does cell phone signal jammer work!!
The current mobile phone signal jammers are all full-band. It can shield all the 2G 3G 4G signals, 2.4G WIFI signals and Bluetooth signals under all the three operators of China Mobile, China Unicom and Telecom. Its principle is to send out by itself. The frequency interferes with the mobile phone receiving the frequency from the base station and wireless router, so as to achieve the purpose of shielding them. The working principle of the mobile phone signal jammer, generally speaking, is that the frequency emitted by the jammer itself interferes with the normal frequency of the mobile phone receiving the base station, making the mobile phone unable to connect with the base station, and thus unable to make calls, receive and send text messages and surf the Internet.
Within a certain frequency range, the mobile phone and the base station are connected by radio waves, and the data and sound transmission is completed with a certain baud rate and modulation method. The jammer scans from the low end frequency of the forward channel to the high end at a certain speed during operation. This 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 and achieve the purpose of shielding the mobile phone signal. The mobile phone appears to search the network, no signal, No service system, etc.
No matter what cell phone card you use, any cell phone cards under China Mobile, China Unicom and China Telecom will be blocked. WIFI will also be blocked. Unless you use 5.8G WIFI to surf the Internet, because the standard configuration of the jammer does not shield 5.8G WIFI. However, some schools may let jammer manufacturers order 5.8G frequencies just in case, so this is not guaranteed to be absolutely foolproof.
Whether it is a large signal shielding instrument or a small signal shielding instrument, its principle is to interfere with the mobile phone to receive the normal frequency sent by the base station through its own frequency, so that the mobile phone cannot contact the base station, so as to achieve the purpose of shielding. The principle of shielding WIFI is that the signal jammer will send out the corresponding frequency when it is working to interfere with the mobile phone to receive the normal frequency sent by the router, so that the mobile phone cannot connect with the router and cannot access the Internet normally.
Mobile phone signal jammers are mainly used in some school examination rooms, dormitories, detention centers, troops and confidential meeting rooms, etc. So as long as you enter these places, your mobile phones will be blocked, and you cannot receive calls, receive text messages, and access the Internet normally. There is no exception, and nothing can be set to avoid being blocked.
Read recommendations:
Portable Large-Range Radio High-Power Drone Jammer
Low-altitude defense drone portable equipment
Mobile jammers are prohibited devices by law
Popular recommended products
Portable HS-V8J High-Power DDS Jammer
2020-09-144G/5G Signal Jammer (14 bands)
2020-11-10Waterproof Portable 360 Degree Anti UAV Drone Jammer
2020-09-24Portable Handheld RF Signal Jammer, Car Lock Remote Control Blocker, 10W Jam Up To 100m
2022-01-13High Power Handheld Signal Jammer HS-P8J
2020-09-15Related Information
Is the jammer waterproof?
2021-07-31Signal jamming devices block mobile games
2021-09-18Good way to prevent recording!Meeting room jammer
2021-09-08Mobile phone signal jammer used in military and prison
2020-11-16"The most stringent in history" college entrance examination:
2020-11-27What are the misunderstandings when using signal jammers?
2021-07-09What is a recording jammer? What is the principle?
2020-12-03Just use the adjustable 4G mobile phone jammer to achieve your goal
2020-11-27How to block phone tapping?
2021-08-27Spanish Telecom Giants Collaborate to Enhance Rural 5G Coverage
2024-05-21Telecom Egypt bags first 5G licence
2024-01-19Design scheme of wireless signal shielding system in examination room
2021-09-29What is a cell phone jammer used for?
2021-08-24China Mobile and Huawei awarded best 5G voice innovation for 5G calling solution
2024-10-14The current status and misunderstandings of the machine signal jammer
2021-04-09WiFi jammer keeps meetings ongoing
2021-06-16In addition to price, what other factors should be considered when buying a signal jammer?
2020-09-11China Telecom and Huawei launch first 5G one number converged private network
2023-07-06Mobile Jammers Disrupt Operators' 3G Services
2021-11-11Solutions to prevent cell phone recording
2021-08-27Interfering products
Low-altitude defense drone portable equipment
2023-11-20Mobile Phone Cellular Signal Booster GSM PCS Network Repeater for Garage Basement Signal Repeat
2023-11-092W Mobile Phone Signal Repeater 1800 2100 2600 MHz Tri-Band 33dBm Network Booster
2023-11-093G Signal Repeater Mobile Phone Signal Booster
2023-11-09Portable Signal Jammer Full Band 21 Channels 2g 3G 4G 5g Mobile Phone Network Lojack Walky Talky Signal Jammer
2023-11-01Professional all-round 360-degree recording jammer air purifier type anti-recording equipment
2023-11-01Anti Spy Remote Control Portable Audio Voice Recording Jammer up to 2m white noise to Privacy Protection
2023-11-01Recording blocker protect your voice information security,air purifier type anti-recording equipment
2023-10-312000m Detection Handheld Drone (UAS) Detection Warning Instrument Detector Dji, Autel and Fpv Drones
2023-10-27Handheld Drone/Uavs Detecter for Detecting Dji/Autel/ Fpv Drones up to 2km
2023-10-25with 2km Drone Controlled Signals WiFi Drone Signal Jammer GSM 900MHz WiFi 2.4GHz 5.8GHz Anti Drone System
2023-10-25Unique Handheld 28 Bands 27 Antennas Wi-Fi6e FM Radio GSM 3G 4G 5g Mobile Phone Jammer
2023-10-23Handheld 24 Antennas 5g Cellphone Signal Jammer with Nylon Cover
2023-10-23Convoy 12 bands RCIED Bomb Jammer
2023-10-23Vehicle Mounted Drone Detection Jamming Integrated Uav Detection, Positioning, and Countermeasures Blocking Units
2023-10-17Portable Drone Detector aeroscope mobile works offline or online can find controller pilot position detection device up to 10km
2023-10-05Vehicle Use-Signal jammer detector for uniform services
2023-09-20Anti-Theft Jammer Detector for Local Command Center
2023-09-20Portable Cellphone Jamming Detector
2023-09-19M8000 RF Signal Detector Anti Spy Tracker Wifi Camera GSM Audio Bug Sweeper
2023-09-188km Ku Band Microwave Alarm Security System Ground Surveillance Monitor/Detector/Sensor/Radar
2023-07-31Full Band Drone Jamming and Navigation Spoofing
2023-07-318kms 300MHz~6GHz RF Uav All Frequency Detection Direction Finding Equipment
2023-07-311.2G 100W anti drone module
2023-07-211.2G 50W anti drone module
2023-07-211.2G 30W anti drone module
2023-07-211.2G 10W/20W anti drone module
2023-07-21Portable anti UAV anti drone Systems 4 bands with removable battery for 1500m
2023-07-21Built-in antenna Phone Signal Jammer Blocker 2g/3G/4G/5g L1 WiFi Camera for room
2023-02-28Portable Handheld RF Signal Jammer, Car Lock Remote Control Blocker, 10W Jam Up To 100m
2022-01-13Start a conversation to know more about what we have for you…
Get in touchEnter your email for exclusive offers and information on new upcoming products.
product
solution
about us
service
news
