Mobile phone signal masker is also called Mobile phone signal jammer . You can tell that it is a tool used to block mobile phone signals by listening to this name. But most people don’t know what signals they can block in mobile phones. So today I will share the knowledge points with you.
First of all, the 2g/3g/4g/5g/WIFI/GPS/Bluetooth signal corresponding to the mobile phone is blocked. After turning on the mobile phone signal masker, the mobile phone cannot receive the 2g/3g/4g/5g/WIFI/GPS/Bluetooth signal. Of course, this is not a fixed combination. You can choose the frequency band you want to block for precise blocking. Therefore, many mobile phone signal shields are derived from the use of WIFI shield, mobile phone signal shield, GPS shield, and Bluetooth shield. Among them, we mention a noun called frequency band.
Common mobile phone 2G/3G/4G signals actually have specific frequency band values. For example, the common ones are 700Mhz/800Mhz/850Mhz/900Mhz/1700Mhz/1800Mhz/1900Mhz/2100Mhz/2300Mhz/2600Mhz. These are the frequency bands of mobile phones with 2G/3G/4G, but different operators in different countries choose differently. For example, it is also 2100Mhz, which may be 3G in Europe, but it may be 4G in Asia.
So you only need to know which operator of your mobile phone is and what mobile phone signals you want to block, and select the specific frequency band to accurately block it. Some friends will ask questions here, wouldn’t it be better if I block all my frequency bands? This is indeed the case in theory, but there is no mobile phone signal masker that can block so many frequency bands at the same time. Why? Suppose the power of a mobile phone signal shield is 100W, and there are only 5 frequency bands that I need to block, and the power of each channel port is 20W. But if I even need signals that do not need to be blocked, there may be 20 in all frequency bands, and the power of each channel port is only 5W. If the power is too low, it will not be able to defeat the signal transmitted by the base station. If you want to ensure the shielding effect, you must increase the power of the shield, which will involve the issue of how to dissipate heat. Therefore, when choosing a mobile phone signal shield, only select the frequency band you need.
Mobile signal blocker
Attached a picture to give friends who have never seen mobile signal blocker a rough impression. signal shielding device Each antenna on represents each frequency band, and the number of antennas there represents the number of frequency bands blocked.
