How does a cell phone blocker achieve a shielding distance that detects effectiveness? Many consumers say that the jammer is ineffective and that the actual shielding time is short, but many of these are caused by incorrect methods. So today we will introduce to you a precise and rapid method. How to test the shielding range of the jammer on site?
The most effective way is to conduct on-site testing of mobile phones in a variety of ways. The test should not be too one-sided: use several mobile phones with various frequency bands to test the shielding effect of the mobile phone signal jammer on site. This is also the most convenient, convenient and effective test method. Based on the limitations of mobile phone test tools and the need to perform calculations after testing professional technical instruments, this method is the easiest for customers to master. In the following ways:
Prepare mobile phones in several frequency bands in advance, including: China Mobile, China Unicom, PHS, and 3G (it is best to have three styles of 3G: Mobile TD-SCDMA, China Unicom CDMA2000, Telecom WCDMA), then turn on the mobile phone signal jammer and take Hold each mobile phone and detect the reasonable shielding radius of the mobile phone jammer from near to far from the installation part of the mobile phone jammer. It is recommended that customers test the jammer at the same time.
When checking whether a mobile phone is blocked, special attention should be paid to not just checking the number of signals on the mobile phone, because the number of signal bars on the mobile phone is sometimes false and does not represent the actual communication status of the current mobile phone. Do not do this at this time. It is too early to conclude that this signal blocker has no practical effect. Instead of dialing the phone intermittently, you can try to dial a local toll-free number or a fixed landline number. If the dialing is blocked, it is considered to be still within the shielding range. On the contrary, if the dialing can get through, it means that the number has been exceeded. Shielded categories.
After all tests of several frequency bands are completed, the spacing with the smallest shielding radius in a certain frequency band is selected as the reasonable shielding radius of this mobile phone signal jammer in the area. This can be used to predict positions when carrying out large-scale multi-point setting.
The above is a very efficient and simple method to detect the distance of the jammer in the natural environment. However, it cannot be judged too early. The shielding effect of this jammer is only so far. You should also check whether there is communication in the surrounding area. For base stations, environmental factors have a greater impact on the shielding effect. If the jammer can reach the required range in the examination room, it can be used with confidence.
To detect whether a certain positioning point is within the blocking range, you should hold the phone at that location for more than 30 seconds to determine whether the phone is blocked.
If you can make a call from an unshielded area to a shielded area, it usually takes a very long distance into the shielded area before the phone will be completely blocked. This is because once the phone is powered on, the phone itself has anti-interference capabilities. Working ability, this kind of anti-interference ability will cause the mobile phone to automatically adjust the output power to ensure this normal voice call. Therefore, it is generally not recommended to implement daily dynamic inspection in voice call mode, but static data inspection should be carried out at each anchor point.