As you know, a cell phone jammer is a device that can block the transmission of signals between cell phones and base stations by emitting some noise or radio signals. When you want to install this kind of device in your home or office, you may wonder how to choose the best device for you.
First, let's figure out which types of jammers can be used in your home or office. Generally speaking, there are 3 types of indoor cell phone jammers: desktop jammers, portable cell phone jammer and high power jammers. The first two are usually used in small areas, while the latter is designed for large places like classrooms and conference rooms because it has a larger coverage area than the others. The next thing you need to know is that there are also jammers specifically designed for outdoor use, which, when worn around one's waist, can block all GSM/3G/4G signals within its jamming radius up to 15 meters away from its location to prevent cheating in exams or other special purposes.
When the cell phone is outdoors, it can receive signals from relatively distant base stations, however, when it is indoors, it must receive weaker signals from closer base stations. Thus, when cell phones are outdoors, they can capture strong signals between one kilometer and five kilometers. In this case, the interference radius of cellular signal jammers is much larger than those used indoors, so there must be some difference in the use of these jammers.
Generally speaking, if the jammers are more powerful, such as 50W and 80W, the radius of interference will become larger and larger at different frequencies. So, if you need to install an outdoor cell phone jammer to block all GSM, 3G and 4G signals within its jamming radius, you can choose a more powerful jammer to achieve this goal. However, if you just want to buy a desktop or portable jammer device to cover your own area with its compact size, you do not need to buy such high power ones as they are not necessary for your use.
Similarly, high power signal jammer may have a greater effect on other electronic devices such as wireless routers and Wi-Fi access points compared to low power jammers. If you have a lot of wireless devices around, then consider getting yourself a low-power one instead!
Generally speaking, for indoor use, the power of the jammer does not need to be that high and the interference radius does not need to be that large because there are only a few people in the area. However, when used outdoors, the situation is different from indoors and more attention should be paid. For example, when you want to hold a special event at your workplace or company and you don't want anyone to use his cell phone during this time, if there are many people working in your office, it is necessary for you to choose a jammer with a higher output power and a larger interference range.
