What factors determine the effective shielding distance of a cell phone signal jammer? from dojammer's blog

The shielding range of a cell phone signal jammer is mainly determined by the following factors.

1. The transmission power of the cell phone signal jammer itself in different frequency bands. In theory, the greater the transmission power, the greater the shielding range. And it is related to the frequency band of the signal frequency transmitted by the frequency band. If the transmission power is the same, the narrower the bandwidth, the greater the shielding range.

2. The shielding range of a cell phone signal jammer also depends on the signal strength at the site of use. The strength of the mobile phone signal at this site depends on whether there is a signal source for mobile phone signal transmission around the site of use, that is, the operator's base station, commonly known as an antenna tower. The distance from the signal tower to the site determines the strength of the mobile phone signal at this site. Of course, this signal source also includes an indoor signal distribution system, commonly known as a cell phone signal amplification device. The distance from this signal source to the site is the most critical factor in determining the shielding range of the cell phone signal jammer. Because the distance from the signal source to the site cannot be changed, it is basically impossible to change the signal strength emitted by this signal source.

3. The shielding range of the cell phone signal jammer is also related to the spatial layout and wall material of the site. If the spatial environment at the site is relatively transparent, the shielding range of the cell phone signal jammer is much better than that of some environments with multiple compartments. And the shielding range of the cell phone signal jammer is also related to the wall material at the site. Basically, the shielding range of the mobile phone signal jammer and the wall material are larger for glass walls, wooden walls, and gypsum board walls than for brick walls and concrete walls. If the wall is a sandwich panel wall with metal on both sides and foam in the middle, the interference signal of the cell phone signal jammer is basically inaccessible.