welcome to HISEA
source:Industry News release time:2021-05-17 Article author:sznbone Popular:Prison Jamming system
Mobile phones are ubiquitous nowadays. According to data from the Cellular Telecommunications and Internet Association, in October 2005, about 195 million people in the United States used mobile phones. In Europe, mobile phones are even more ubiquitous.
It’s great to be able to call people at any time. Unfortunately, restaurants, cinemas, concert halls, shopping centers, and churches are all suffering from mobile phones, because not all mobile phone users know when to keep quiet. The speaker and his friends chat about some private topics on their mobile phones. Everyone next to them has to share such private conversations. Who hasn’t experienced it before? Although most people can only grumble and give up, some people go to extremes and retaliate.
A mobile phone is essentially a handheld two-way radio communication device. Like all radio devices, the signal can be blocked or interfered. This article will introduce the working principle of cell phone jammer and the legality of their use. Interfering with mobile phones is the same as interfering with other types of wireless communications. The mobile phone communicates with its service network through the base station. The base station divides the city into many small areas, called cells. When a mobile phone user is driving on the street, the signal is between different base stations transfer.
The interfering device emits the same radio frequency as the mobile phone, thereby interfering with the communication between the mobile phone and the base station.
The jammer transmits the signal of the same frequency as the mobile phone and the power is strong enough to allow the two signals to conflict and cancel each other. Since the mobile phone can automatically increase the power when it encounters slight interference, the jammer must be able to recognize the power increase of the mobile phone and increase its power accordingly.
The mobile phone is a full-duplex device, which means that it uses two separate frequencies for speech and listening. Some jammers only block one frequency, but they also have the effect of blocking two frequencies at the same time. Since the mobile phone can only receive one frequency at this time, it will mistakenly believe that the mobile phone has no service.
Read recommendations:
3G Signal Repeater Mobile Phone Signal Booster
Unique Handheld 28 Bands 27 Antennas Wi-Fi6e FM Radio GSM 3G 4G 5g Mobile Phone Jammer
1.2G 10W/20W anti drone module
6G Is Coming: What Will Be The Business Impact?
Looking for a powerful signal jammer with adjustable functions?
Popular recommended products
Waterproof Portable 360 Degree Anti UAV Drone Jammer
2020-09-24Portable HS-V8J High-Power DDS Jammer
2020-09-14High Power Handheld Signal Jammer HS-P8J
2020-09-15Portable Handheld RF Signal Jammer, Car Lock Remote Control Blocker, 10W Jam Up To 100m
2022-01-134G/5G Signal Jammer (14 bands)
2020-11-10Related Information
Who needs a handheld Wifi Bluetooth 4G mobile phone signal jammer?
2020-11-11"Maintaining Prison Order: Revealing Prison Signal Jammers, How to Effectively Prevent Inmate Communication?"
2024-03-08Unleashing new growth in 5G and new 5.5G commercialization
2024-02-26Why is GPS jammer so popular
2020-12-07The role and use of GPS jammer
2020-12-10Solutions to prevent cell phone recording
2021-08-27Icasa slams use of 'signal jammer' in Sona
2021-10-25China to reach 1 billion 5G subscriptions by end-2024: GSMA
2024-06-285G network covers all towns in Xizang
2023-10-17What are the influencing factors of mobile phone jammers
2021-12-10High power drone gun jammer destroy multiple signal frequency bands
2021-05-31Mobile Jammers Disrupt Operators' 3G Services
2021-11-11The test signal jammer helps the test room to prevent cheating
2020-11-30Compared to men, women need the protection of a GPS jammer
2021-09-22How Likely Are Burglars To Use A Wifi Jammer?
2021-05-04Huawei Introduces AI Technologies to Accelerate Network Transformation Towards All Intelligence in the Net5.5G Era
2024-04-18The school has installed an exam signal shield? For a fair exam environment
2020-11-23Can't prevent recording? Record jammer to prevent recording?
2020-12-15Ultrasonic recording interferes with the shielding device, shielding mobile phone recording!
2021-08-17Precautions for installation of signal jammer!Wireless Network Signal Jammer devices
2021-09-28Interfering 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
