welcome to HISEA
source:Industry News release time:2021-09-30 Article author:sznbone Popular:Prison Jamming system
What is a recording blocker?
The recording blocker interferes with the recording of mobile phones, voice recorders and other recording equipment. The encrypted interference signal emitted can make the recorded sound dope with noise and make the conversation inaudible; the signal blocker is to block the mobile phone signal, so that the mobile phone Can't make and receive calls, can't surf the Internet, both of them are shielding devices but their functions are different.
Recording shielding is the use of random pulse sequences in a wide frequency range to carry out random interference. High-power high-frequency signals cause electromagnetic interference to the recording equipment, causing the input voltage or input current of the front end of the acoustic sensor to exceed the threshold of the acoustic sensor, making it unable to work normally. Effective blocking of voice.
The recording blocker will emit ultrasonic waves that exceed the threshold of human hearing and are harmless to humans. Using our self-developed ultrasonic noise algorithm, the microphones in digital devices such as mobile phones and voice recorders will be affected by the anti-recorder. The sound of normal conversation is submerged in random noise, and the post-recording processing algorithm is also difficult to restore, thus protecting the content of the conversation from being leaked from the source.
The principle of the recording blocker is to emit ultrasonic waves with random noise that the human ear cannot perceive. When a digital device such as a mobile phone is recording, these noises are recorded into the digital device together with the sound of normal conversation, making the recorded audio invalid. The audio information in the captured video also has the same interference effect. Because the noisy ultrasonic noise is randomly generated and cannot be restored, the audio after the interference cannot be restored, thereby ensuring that the original information is not leaked and spread.
Signal jammers can be shielded. Mobile phone signals, WIFI signals, walkie-talkie signals, GPS signals, remote control signals, etc. are all types of signals. This type of jammer interferes with normal signal reception through its own frequency signals, such as mobile phone signal shielding. The principle of the device is to scan 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 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, achieving the purpose of shielding the mobile phone signal.
Read recommendations:
8 Bands Wireless Signal Jammer
Built-in antenna Phone Signal Jammer Blocker 2g/3G/4G/5g L1 WiFi Camera for room
Huawei's 5G-A tech powers China’s autonomous coal mining truck revolution
Popular recommended products
High Power Handheld Signal Jammer HS-P8J
2020-09-15Waterproof Portable 360 Degree Anti UAV Drone Jammer
2020-09-24Portable Handheld RF Signal Jammer, Car Lock Remote Control Blocker, 10W Jam Up To 100m
2022-01-13Portable HS-V8J High-Power DDS Jammer
2020-09-144G/5G Signal Jammer (14 bands)
2020-11-10Related Information
How to jamming 5G signals in the coming 5G era
2021-08-31Mobile cell tower spoofing jammers to combat human trafficking
2021-11-17Jammers have powerful power and task processing capabilities
2021-09-28The rechargeable battery of the shield will save you a lot of trouble
2020-11-09What device can disable cell phones?
2021-08-19Some prisons abroad also implement cell phone signal blockers, prohibiting the use of cell phones in
2021-05-20Anti-recording pen recording equipment to prevent being recorded! "Recording jammer.
2021-04-08What should pay attention to before buying the jammer?
2021-08-02How to choose a suitable anti-recorder!High power man-pack jammer
2021-09-14A suitable high power adjustable 4G shield is obtained here
2020-11-19Jammers exist on the San Francisco coast
2021-07-22What is a cell phone jammer used for?
2021-08-24Why Are GPS Jammers So Popular
2020-10-17Worried about drone invasion? The HiSea Jammer provides Anti-drone solutions.
2022-09-09Focusing on Interference Challenges: New Technology Enhances 5G TDD Uplink Measurement and Paves the Way for 6G Signal Management Trends
2025-03-04Jammers make life more convenient
2021-10-23How do different jammers release the heat generated
2021-10-18Professional shielding device to protect business secrets
2020-11-13How to choose the suitable signal jammer?
2021-05-10From railways to 5G: why China is plugging into the Digital Silk Road
2023-10-19Interfering 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 module
2023-07-211.2G 50W Jammer 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
