Method for testing the interference range of cell phone signal jammers on site from dojammer's blog

Before the cell phone signal jammer is officially activated, the shielding effect of the cell phone signal jammer must be tested first, so that the installation location and number of cell phone signal jammers can be selected.

First, preset the installation location of the cell phone signal jammer, and place the cell phone signal jammer on the desktop, generally placed in the front and back corners of the site of use, turn on the power and turn on the switch, and then the shielding effect test can be carried out.

Before preparing for the test, prepare three mobile phones of different operators, and place the mobile phones at the opposite corners of the site of use, which is also the farthest position from the signal jammer on the machine. Then let the mobile phone stand for about 2 minutes. During this period, please do not perform any operations on these three mobile phones, and then check whether the mobile phone signal on the mobile phone screen is blocked. If it shows no mobile phone signal, then the mobile phone of this operator is blocked. If the mobile phone shows a signal, you can try to call the operator's customer service hotline, or use the mobile phone network for data Internet access. If you can make a call or data Internet access, then you need to move the mobile phone to a position close to the mobile phone signal jammer, and go back and forth until the mobile phone is completely blocked, and the mobile phone cannot make a call or data Internet access. This is used to determine the shielding range of the mobile phone signal jammer, and the number of mobile phone signal jammers to be used is determined by this shielding range.

If the cell phone signal at the site of use is strong, and the low-power cell phone signal jammer cannot completely shield the entire site of use, you can determine the signal frequency band that the mobile phone signal jammer cannot shield, and then use the high-power shielding module to perform targeted interference on this frequency band based on the tested frequency band. First, you need to use an Android phone to download the Cellular-Z mobile phone APP, and then open this mobile phone APP on the premise of turning on the mobile phone signal jammer, and then take a screenshot and send it to the supplier technician of the cell phone signal jammer, and the manufacturer will determine the cell phone signal frequency band that the mobile phone signal jammer cannot shield. Finally, by using a high-power shielding module to cover the frequency band with a strong signal, the cell phone signal at the place of use can be shielded.