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:
Handheld Drone/Uavs Detecter for Detecting Dji/Autel/ Fpv Drones up to 2km
Meeting Room 6 band signal jammer
5G jammers will soon replace 4G signal blockers
The gap between ordinary mobile phone signal jammer and high-quality shielding
Training institutions can use mobile phone signal jammers to increase the admission rate
Popular recommended products
Portable Handheld RF Signal Jammer, Car Lock Remote Control Blocker, 10W Jam Up To 100m
2022-01-13Portable HS-V8J High-Power DDS Jammer
2020-09-14Waterproof Portable 360 Degree Anti UAV Drone Jammer
2020-09-244G/5G Signal Jammer (14 bands)
2020-11-10High Power Handheld Signal Jammer HS-P8J
2020-09-15Related Information
Direct factors affecting the price of signal jammers!Prison signal jammer
2021-09-18Schools and prisons should follow these three principles when using mobile phone signal jammers
2021-06-01How to choose the right jammer?
2021-09-29The working principle of wireless signal jammer
2021-09-28How Can Jammers Be Used To Disable or Block Your Wireless Home Security System?
2021-04-30How to prevent the phone from being recorded?
2021-08-21The powerful multifunctional signal jammer is here waiting for you
2020-11-10What's the difference between desktop jammer and handheld jammer?
2021-07-29After Italy blocked access to OpenAI's ChatGPT chatbot, will the rest of Europe follow?
2023-04-05A jammer was installed for the fair examination
2021-10-12The gap between ordinary mobile phone signal jammer and high-quality shielding
2020-09-25Russian college entrance examination also uses mobile phone signal shielding equipment to prevent ch
2021-08-05What kind of signals can the mobile phone signal jammer block?
2021-08-09How does drone jammer work?
2021-08-17How do jammers prevent fires?
2021-09-11Recording jammer can effectively prevent malicious recording
2020-12-03Ultrasonic recording interferes with the shielding device, shielding mobile phone recording!
2021-08-17Solutions to prevent cell phone recording
2021-08-27Mobile jammers improve work efficiency
2021-12-22Jammers exist on the San Francisco coast
2021-07-22Interfering products
SSA3000X Plus Series Desktop Style Spectrum Analyzers
2025-04-09HSA-Q1 Handheld RF Spectrum Analyser up to 13.44 GHz
2025-04-09Protek A734 100kHz-4.4GHz Handheld Spectrum Analyser
2025-04-09Low-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
2023-07-21Start 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
