you can learn about how to build a drone signal jammer

In many public places, it is not appropriate to use mobile phones, such as conference rooms, theaters, libraries, examination rooms, etc. In this case, the noise generated by using the mobile phone will seriously affect others, divert the attention of others, and may even cause some information to be leaked. Use the cell phone signal blocker to achieve the desired shielding effect.When you take the school exam, do you find a problem: the mobile phone near the test room suddenly has no signal, can't make a call, can't send a text message, and even has no network. In fact, this is because the school uses a mobile phone jammer to shield all mobile phone networks near the test center. This is to prevent candidates from cheating and to ensure the fairness of the test.

The development of mobile phones has indeed brought great convenience to people, but it is necessary to use cell phone blocker in places where information is kept secret or other places that need to be kept quiet, such as military bases, prisons, camps and other places. Where strict control of the country is required and where confidentiality is particularly high, it is necessary to strictly control mobile phones.How To Build A Drone Signal Jammer.Once the cell phone signals in these areas are blocked, the leakage of information is greatly prevented.This mobile phone jammer uses a new all-in-one design that can interfere with 10 bands such as 2G 3G 4G UHF with a interference radius of 20 meters and a nylon cover that can be worn on the arm or belt.

With a good cooling system, you don't have to worry about the temperature being too high. You can work continuously for two hours on a single charge. It was recharged with the world's safest large-capacity battery.The interference frequency band includes GSM 3G 4G WIFI GPS Bluetooth signal.The effect is remarkable.It is especially convenient to carry around. Generally, it can be used for several hours on a single charge. The shielding range is usually about ten feet.Mobile phone interference equipment is generally relatively small. You can put it in your pocket or in the car.