Before getting a portable mobile phone jammer, we need to know what signal our smart phone can receive. Common 4G smart phones on the market usually receive 2G 3G 4G GSM GPS WIFI signals. If you want to block these signals and then buy jammers, you need to carefully check the signals that interfere with each device and its shielding radius. Jammers are a good tool for blocking signals. They can help us solve many problems in our lives and are very good tools. When you hear the words “cell phone jammer“. I think you are familiar with them because they are widely used. When there are important exams or meetings. The product is turned on. Cell phone jammers can block cell phone signals. After installation, there is no signal in the phone. Yesterday I read a message that a middle school installed Handy-Jammer because many students are playing games or surfing the Internet with their mobile phones. Many people agree with this, while others disagree.
The second technique is cell base triangulation, which is more convenient because it uses your own phone to track your location. You probably know that your phone is connected to at least 2-3 base stations. Their coordinates are known and fixed. And your position is calculated between the three unit towers. The advantage of this technology is that it can be used universally, because almost everyone has a mobile phone that can be found by telephone signals, even indoors. This is some tracking technology without GPS signal, but it also means there are many ways to track people. In this case, if you are not sure how others will chase you, it is recommended to use a normal multi-frequency jammer.
In order to attenuate signal interference, a frequency that alternates with the blocked frequency must be used. This is where the DSSS (Direct Sequence Spread Spectrum) technology used by Ctrack comes into play. DSSS does not use any other format (such as GSM) for communication. Instead, it sends messages with a bandwidth that exceeds the bandwidth required by the message signal. The spread of the transmitted signal over a wider bandwidth makes the resulting broadband signal appear as a noise signal, which can better resist intentional and unintentional interference. DSSS is also designed to carry signals from difficult radio frequency ranges and can penetrate concrete, making it ideal for urban, retail and financial institution environments.