A recording signal jammer is a device used to prevent recording equipment from working properly. Its shielding range is one of the important indicators for evaluating its performance and effectiveness. The following is detailed science about the shielding range of recording signal jammers:
- The principle and function of recording signal jammer
- Definition of shielding range
- Factors affecting shielding range
- How to evaluate the shielding range of a recording jammer
- Precautions when using recording signal jammers
A recording jammer is an electronic device that interferes with surrounding recording equipment by emitting specific interference signals, making it impossible to record properly. It blocks various types of recording devices, including covert recorders hidden in objects, cell phone recording functions, voice recorders, and more.
The shielding range of a recording jammer refers to the range within which it can effectively block the recording device, usually measured in distance or area. For example, you can express a distance range in meters or kilometers, or you can express an area range in square meters or square kilometers.
Interference signal power: The greater the interference signal power emitted by the recording jammer, the wider its shielding range.
Frequency range: The wider the frequency range a recording jammer covers, the wider its applicable range.
Environmental factors: Factors including buildings, terrain, materials, etc. will affect the propagation and attenuation of interference signals, thereby affecting the shielding range.
Sensitivity of recording equipment: Different types of recording equipment have different sensitivity to interference signals, which will also affect the evaluation of the shielding range. 4. Shielding range of different types of recording jammers
Small portable recording jammer: usually suitable for small-scale scenarios, such as personal offices, conference rooms, etc., and its shielding range is generally between a few meters to more than ten meters.
Medium-sized fixed recording jammer: suitable for medium-sized places, such as commercial office buildings, restaurants, etc., and its shielding range can reach tens of meters to more than a hundred meters.
Large-scale professional recording jammer: usually used in large-scale event sites, convention and exhibition centers and other occasions that need to cover a large area. Its shielding range can cover hundreds of meters or even thousands of meters.
Field testing: The most direct method is to conduct field testing to evaluate the shielding range based on the attenuation of the interfering signal.
Data provided by the manufacturer: Some recording jammer manufacturers will provide data on the shielding range of the product, but it should be noted that it may be affected by environmental factors and test conditions.
Legal compliance: When using recording jammers, you need to comply with local laws and regulations to ensure legal compliance.
To sum up, the shielding range of the recording jammer is affected by many factors, and appropriate equipment needs to be selected based on actual needs and environment. When using it, pay attention to legal compliance and use it with caution to ensure its normal and effective operation.