many people like buying 4g cell phone jammer amazon

Obviously, the farther the jammer is from the base station, the weaker the field strength and the larger the interference radius, and vice versa. The jammer will lose its interference ability if it is very close to the base station.Since the frequency band used by mobile phones is dedicated, the transmission frequency of the cell phone jammer in the conference room is completely within the mobile phone working frequency specified by the country, so it has no effect on other electronic equipment such as TVs and radios. At the same time, the mobile phone jammer only interferes with the BCH transmitted by the base station received by the mobile phone, so that the mobile phone cannot establish contact with the base station, so it has no effect on the mobile phone. 

In order for the mobile phone signal jammer to effectively interfere with the mobile network, it must be ensured that the signal field strength of the jammer should be much greater than the field strength of the mobile signal BCH in the interference area. Therefore, the same jammer uses different locations and the effective area of ​​interference. It is different. Generally, the closer to the base station, the stronger the local BCH field strength, and the smaller the area where the jammer reaches effective interference. Generally, the interference radius can only reach 0.5-9m; the farther away from the base station, the BCH field strength is relatively weak. Then the radius of the jammer to reach effective interference is larger, up to ten to tens of meters.

Furthermore, although the signal field strength it emits is stronger than that of BCH, it is much weaker than the electromagnetic radiation field generated by mobile phone calls, so it will not cause harm to the human body. It can be used for a long time with confidence.The interference range of the same jammer used outdoors will be doubled compared to indoor interference. If the interference range is less than 200m, generally set a 4G Cell Phone Jammer Amazon, which can be hung on the indoor wall with a distance of 1~1.8m on the ground; if it is greater than 200m, generally Two or more units should be installed and placed on the front and back walls.