It is difficult to define the number of existing interfering devices. However, if there is a frequency, countermeasures should be taken to allow frequency interference. However, the entire frequency spectrum of this frequency band is very wide, and it is impossible for jammers to block all frequencies themselves. In fact, it can never be a broad-spectrum jammer that can block all frequency bands. Therefore, jammers are used to target the most common communication frequency bands. Since the development cost of portable jammer devices is very high, jamming devices are dedicated to the most common frequencies. Among these groups (most common) are:
Recently, cellular jammers have been concentrated on GSM, GPRS, 2G, DCS, 3G and 4G frequencies. These wifi jammer have the function of blocking or canceling audio communication and data transmission via the Internet. Usually used to avoid security risks and prevent information leakage and theft. It also helps prevent privacy risks. Some phones are used to automatically hold the call to listen to the conversation. These frequencies are also common in 3G GSM spies and spy cameras and microphones (currently 4G). Therefore, these frequency suppressors can prevent and eliminate interference. Because of the triangulation of the signal, the locations that need to be avoided can be easily found by mobile phone users and are also very interesting. Although it is widely used in universities and schools, it is usually used to avoid the use of spy helmets or helmets for cheating tests.
The GPS jammer on the GPS tracker has many frequency bands, but the most famous is L1 (Extended Civilian). There are four other frequency bands on the GPS frequency, which are used for police, military, government and scientific research. GPS jamming devices are mainly used to avoid being tracked by GPS locators or being monitored by third parties who have been aware of our activities. Nowadays, spyware can be easily found and installed on the phone to monitor the location in real time. GPS tracking system allows them to focus on our business, insurance companies can monitor the usage of cars and vehicles can be monitored through the fleet control system, which always shows your location and many other uses related to location control. Communication with mobile satellites.
A wifi jammer is a jammer for WIFI or BLUETOOTH and wireless cameras. Although there are also 5.6/5 frequency bands, its purpose is to avoid the use of communication equipment based on 2.4 GHz civil frequency band communication. , 8 GHz, more and more after the 2.4 GHz band is saturated and used. These frequencies include almost all household appliances, such as phones, computers, routers, set-top boxes, wireless microphones, most miniature cameras and spy devices.
The walkie-talkie is a jammer focused on the frequency of the walkie-talkie, because it is a widely used device, and the price is very cheap and not directly controlled by the telephone company. Government), usually used for criminal purposes. Used to activate the room remotely. Radio frequency jammers, these devices are sometimes used as radio control, other communication equipment, etc. At these frequencies, usually only VIP devices are considered because they are very accidental or very technical/professional. Usually, the power at these frequencies is important. Here you will find radar, microwave communication, dedicated microphones, car control and automation, etc.