The Importance of Proper Installation and Placement of Signal Jammers in Examination Halls

Signal jammers are commonly used in examination halls to prevent cheating and maintain the integrity of the testing environment. However, some customers have reported that the effectiveness of these devices is not as expected. Apart from considering the quality and performance of the jamming equipment itself, it is crucial to understand how these devices should be installed and placed in order to maximize their effectiveness.

Choosing the Right Installation Location:

When it comes to installing signal jammers in examination halls, it is essential to follow the original design plans. The most common installation locations for these devices include the sides of the front and back blackboards, the top of the blackboard in the middle, the corners of the walls at the front and back of the classroom, the middle area of the walls on both sides of the classroom, and the middle beam of the classroom. However, it is not recommended to place the jamming equipment on the podium or hide it inside the lectern for the sake of convenience.

Considerations for Placement:

Placing the signal jammer in a closed environment, such as inside a lectern, can hinder its heat dissipation capabilities. This can have a negative impact on the effectiveness of the jammer. Additionally, if the surrounding environment is made of metal, it can further impede signal transmission, directly affecting the jamming effect. Therefore, it is crucial to choose an open and well-ventilated location for the installation of signal jammers.

Optimizing Signal Jamming Effectiveness:

To ensure optimal signal jamming effectiveness, it is important to consider the following factors during installation:

  1. Height: The signal jammer should be installed at an appropriate height to cover the entire examination hall. This will help in blocking signals effectively and prevent any blind spots.
  2. Angle: The angle at which the signal jammer is installed can significantly impact its effectiveness. It is recommended to position the device in a way that maximizes its coverage and minimizes any potential interference.
  3. Interference from Surrounding Objects: It is crucial to avoid placing the signal jammer near any objects that may interfere with its performance. These objects can include metal structures, electronic devices, or any other sources of electromagnetic interference.


Proper installation and placement of signal jammers in examination halls are essential to ensure their optimal effectiveness. By following the original design plans and considering factors such as installation location, height, angle, and interference from surrounding objects, the jamming devices can effectively prevent cheating and maintain the integrity of the testing environment. It is important for educational institutions and examination authorities to prioritize the correct installation and placement of signal jammers to uphold the fairness and credibility of examinations.