The signal of the mobile phone is transmitted in the air in the form of radio waves. When you are talking with your friend on the call, your mobile phone will convert your voice into a signal and send it to the nearest base station A through radio waves. After base station A receives the signal, it will forward it to base station B, and base station B will send the signal to your friend’s phone. After the mobile phone receives the signal, it converts it into a voice. That way you can hear and talk with each other on the phone.
This signal propagates in a straight line; obstacles like tall buildings can block it; that’s why the cell tower we see daily has to be that high. The frequency of our mobile phone signal is generally around 900Mhz. In addition to propagating by ionospheric reflection, mobile phone signals are also propagated by electromagnetic waves or radio waves.
Mobile phone signals are transmitted through electromagnetic waves in different areas through base stations. Still, electromagnetic waves have a limited distance and gradually weaken as the distance increases.
The telecommunication companies will build many base stations to make the signal cover a wide geographic area as much as possible, and the distribution of base stations is not random. Like every commercial business, they have to consider the input and output, so the distribution and locations of base stations are the outcomes analyzed by many talents.
The signal coverage of the base station is circular. When the circle is at the center of the hexagon cell, the number of circles is less. You will get maximum coverage with fewer stations when the network is in a hexagon layout. The hexagon layout is a tessellating cell shape in that cells can be laid next to each other without overlap; therefore, they can cover the entire geographical region without any gaps. (See more explanation here.) Therefore, the coverage of base stations is distributed in hexagons, and a base station is set up in the center of each hexagon cell, which is covered by the formed network. The entire structure is like a honeycomb, so it is called a cellular network.
So how to test the effective distance of the cell phone jammer?
There are several methods to test the distance of the cell phone jammer, such as testing software, some professional testing devices, etc. But the easiest way is to block your smartphones and see the result. All you have to do is get some mobiles running on a different frequency.
And here’s the method.
Prepare mobile phones of multiple frequency bands, turn on the mobile phone signal jammer, hold each mobile phone, and test the effective shielding radius of the jammer from near to far from the installation position of the mobile phone jammer. It is recommended that users should test multiple distance jammers at the same time. Shield distance in direction.
Firstly, turn on the cell phone signal jammer. Then hold the mobile phones and gradually move far away from the jammer. Look at the signal bar on the phone, and you can stop moving when the signal is recovered. Finally, you can get the jamming range of the cell phone jammers by calculating the distance between your location to the jammer.
The thing you should be careful of is that the signal bar on your phones is fake. They are still showing a full bar even though they have been blocked. So when you move away, you should dial out a call intermittently to check whether they are recovering or not.
To test whether a certain point is within the shielding range, you should hold the mobile phone at this position for more than 30 seconds to confirm whether the mobile phone is blocked.
The cell phone jammers produced by Jammer Master are different from our competitors. We use high power hopping and multiplexing technology. What do they mean? A better jamming result, reducing the radiation by 150 times than traditional method by our competitors.