The Importance of Using Full Band Interference Devices in Examination Halls

Ensuring Fairness and Security for Candidates

In order to ensure fairness and integrity in examinations, the use of full band interference devices has become an essential tool in examination halls. Just like other important exams, the use of these devices in the high-stakes college entrance examination has garnered significant attention. However, it is crucial to address common misconceptions and considerations when using full band interference devices. This article aims to shed light on the factors that affect their effectiveness and provide guidance on their appropriate usage.

Factors Affecting Interference Range:

Various factors can influence the effective shielding range of full band interference devices, including but not limited to distance, direction, unobstructed objects relative to the base station, wall materials of the examination venue, installation height, and specifications. It is essential to consider these factors based on the specific circumstances of each examination hall.

Considerations for Effective Usage:

To maximize the effectiveness of full band interference devices, it is crucial to take into account the following considerations:

  1. Unobstructed Objects and Wall Materials: The presence of unobstructed objects relative to the base station and the wall materials of the examination venue can impact the interference range. Careful attention should be given to these factors during installation.
  2. Installation Height and Specifications: The recommended installation height for full band interference devices is generally between 1.8 to 2.5 meters. It is important to install them in a position that ensures unobstructed coverage between the target shielding areas.
  3. Other Factors: Apart from the aforementioned factors, it is essential to consider any other relevant factors that may affect the interference range and overall performance of the devices.

Temperature Considerations:

It is normal for the surface temperature of full band interference devices to rise above 40 degrees Celsius during prolonged operation. This temperature increase should not be a cause for concern as it falls within the expected range.


The use of full band interference devices in examination halls plays a vital role in ensuring fairness and safeguarding the interests of candidates. By understanding the factors that influence their effectiveness and following the recommended guidelines for installation and usage, examination authorities can create an environment that promotes equal opportunities for all candidates. It is imperative to prioritize the proper implementation of these devices to maintain the integrity of high-stakes examinations.