The effective shield distance for the jammer is the indoor distance. There are not many obstacles indoors, and there is a certain distance from the base station. Using a desktop multi-antenna signal blocker indoors will improve the shielding effect. ..
In open outdoor areas, there are not many obstacles, so an effective shield distance can reach hundreds of meters. Since the effective operating distance of the portable jammer has a certain relationship with the environmental conditions at that time, whether outdoors or indoors, it is recommended to use the high output signal jammer outdoors.
Distance from the base station, location, etc. Therefore, when using a mobile phone signal shield, this factor should be taken into consideration to avoid blind spot shielding and its effect on the shielding effect.