GSM is the most commonly used frequency range for disruptive cell phone networks and mobile communications. It includes four main frequency bands (850 MHz, 900 MHz, 1800 MHz, 1900 MHz) and many smaller standards used in different countries/regions in the world (such as UMTS, CDMA2000, Nextel, TDMA, AMPS, W-CDMA PCS, etc.) . Under the communication standard, 3G must be mentioned separately, because it is not only a modern communication frequency, but also can be used for other purposes. You…

In Spanish law, the use of these devices is not allowed because many people have misused them and the consequences can be serious. For some time, frequency jammer were illegally installed in vehicles to avoid radar fines, as their range did not allow the detection of a vehicle crossing the authorized speed.

Another use commonly detected by law enforcement and security companies is the use of jammers to block alarm systems…