Mobile phone signal jammers are used in many places, but they cannot be used immediately after installation. We still need to go through certain testing and acceptance to determine its effectiveness and ensure its effectiveness.

It is very important to ensure whether the mobile phone signal jammers can truly effectively block mobile phone signals. When purchasing a mobile phone signal jammer, testing is a very important step.

1. Test the blocking distance of the mobile phone signal jammer. Don't just try it with one or two network mobile phones. The mobile phone networks used are different, especially the 4G mobile phone network. The 4G network uses a broadband high-speed transmission method. If the mobile phone If the signal cellphone jammer is not powerful enough, it may not be able to block 4G;


2. It is necessary to find all the mobile phones in the current network of mobile communication providers before testing. Make sure that each mobile phone network can meet the needs of at least one classroom to be considered successful. After turning on the phone to test the shielding effect, be sure to ensure that there is no signal on the mobile phone within half an hour and no time appears. sometimes not;


3. Another important point is that if it is a mobile phone wireless signal jammer with a metal shell, touch the front and rear sides of the fuselage with your hands after 1 hour after turning it on. If the temperature is moderate and not hot, there will be no problem. If it is very hot, it will not pass, because the machine continues to heat up. It will cause the power of the mask to attenuate, make it unable to work stably, and easily cause burns.

The main functions of the four major signal frequency bands used by drones

• 1. 2.4GHz frequency band


• The 2.4GHz frequency band is one of the more common frequency bands used in drones. It is a type of radio frequency band used by drones and is mainly used for WiFi and Bluetooth communications. This frequency band has a wider coverage and a faster transmission rate, so it is widely used in remote control and image transmission of drones.


• 2. 5.8GHz frequency band


• The 5.8GHz frequency band is one of the most common frequency bands in drones. It is also used in WiFi and Bluetooth communications, and is also widely used in drone image transmission systems. Compared with the 2.4GHz band, the transmission rate of 5.8GHz is faster, but the coverage range is relatively small.


• 3. GPS satellite signal frequency band-1.5G frequency band


• The GPS satellite signal frequency band is a type of frequency band used for drone positioning. It can accurately locate the position of the drone, thereby enabling flight path planning and tracking. GPS satellite signals are also one of the keys for UAVs to achieve autonomous flight and formation control.


• 4. Remote control signal frequency band-900 frequency band


• The remote control signal frequency band is a type of radio frequency band used for remote control of drones. It connects the drone flight controller to the remote controller to achieve remote control of the drone within a certain range. This frequency band has a smaller application range, but it plays an important role in remote control of drones.