1. The effective shielding range of the test panel signal monitor varies in different occasions. This is closely related to the signal field strength of the site. Different types of mobile phones may not have the same shielding range on the same site, so they should be selected according to the actual situation.

2. The reasons that affect the shielding range of the cell phone jammer include: distance, direction, barrier-free objects of the base station, wall materials of the site…

If the mobile phone signal jammer is installed outdoors, it is necessary to take waterproof and lightning protection measures. It is usually recommended to equip the mobile phone signal jammer with a special installation box. , used for heat dissipation, the top of the box is opened to extend the antenna of the mobile phone shield, the holes are sealed with hot melt adhesive, and the bottom of the box is provided with a power input hole and a diversion hole to avoid water…

If the mobile phone signal jammer is installed outdoors, it is necessary to take waterproof and lightning protection measures. It is usually recommended to equip the mobile phone signal jammer with a special installation box. , used for heat dissipation, the top of the box is opened to extend the antenna of the mobile phone shield, the holes are sealed with hot melt adhesive, and the bottom of the box is provided with a power input hole and a diversion hole to avoid water…

First, the bigger the power, the better

1. The frequency output of the host is inaccurate, the frequency drifts, and the bandwidth is too wide, which wastes power and causes interference to the base station.

2. The shielding efficiency of the simple frequency sweeping power suppression method is not high, and the radiation generated is relatively large.

3. The power is falsely marked and the publicity effect is exaggerated, so that the nominal power has no actual…

There are more than 20,000 drones in China, but only 10,000 people in the country have obtained a drone driver's license, which means that nearly 50% of the drones are in a "black flying" state. "Shu Zhenjie, director of the UAV System Research Office of the China Institute of Aviation Comprehensive Technology, gave this set of data. The safety problems caused by UAVs are of concern. How to tame "black flying" UAVs? What kind of order control is established? China What technological means…

In some characteristic places, it needs to be applied to the signal jammer, mainly to shield the signal. Since the signal will appear at any time, the signal jammer should also be turned on at any time, but doing so is likely to cause the current to be unstable. The solution is to change the current size. So how to change the current size of the signal jammer? There are three main methods:

1. Replace the resistor or power supply (voltage). In the circuit of the signal isolator, the…

Unmanned aerial vehicles are controlled remotely and wirelessly via radio waves. It is an invisible electromagnetic spectrum (frequency in MHz). There should be a transmitter to send the message and a receiver to get the message that the radio waves work. A lot is that the transmitter and receiver must operate at the same frequency.

Wireless Remote Control Portable Drone Blocker GPS Frequency

WiFi is often used for remote control drone work, such as Aum AR drone 2.0, and the…