cellphone signal blockers interfere with the communication between mobile phones and base stations by emitting electromagnetic waves of a specific frequency, making it impossible for mobile phones to receive or send signals. This article will detail how cell phone reception jammers avoid interfering with non-target signals.
Determine the target signal and target area
1. Determine the target signal
Different mobile communication technologies use different frequency bands. First, you need to determine the type of target signal to be interfered with, such as 2G, 3G, 4G or 5G.
Common mobile communication frequency bands:
| Jamming frequencies |
2G (GSM): 850 MHz, 900 MHz, 1800 MHz, 1900 MHz 3G (UMTS): 850 MHz, 900 MHz, 1900 MHz, 2100 MHz 4G (LTE): 700 MHz, 800 MHz, 1800 MHz, 2600 MHz 5G: 600 MHz, 700 MHz, 3.5 GHz, 26 GHz, etc. |
Determine the specific area that needs to be interfered, such as a classroom, conference room, or theater. Clarifying the target area can help better set the power and antenna direction of the jammer to avoid interfering with unnecessary areas.
Adjust the frequency settings of the cell phone jammer
- Select a specific frequency band
- Frequency segment interference
- Dynamic frequency adjustment
Based on the target signal, select a specific frequency band for interference. Many jammers allow users to manually select and set the operating frequency. By choosing to only interfere with the target frequency band, interference with non-target signals can be reduced.
Some advanced jammers support frequency segment interference, which can segment multiple frequency bands. Users can set the interference strength and coverage of each frequency band as needed to ensure that only the target signal is interfered.
Some jammers have a dynamic frequency adjustment function, which can automatically adjust the interference frequency according to the actual signal situation in the environment. This function can effectively avoid interference with non-target signals.
Control the transmit power of the phone jammer
- Reasonably set the transmit power
- Set power by region
- Dynamic power adjustment
The transmit power of the jammer determines the coverage and strength of the interference signal. Reasonable setting of the transmit power can ensure that the interference signal only covers the target area without affecting the surrounding area.
In some large areas, the method of setting power by region can be adopted. By using jammers with different powers in different areas, the interference intensity of each area can be accurately controlled to avoid interference with non-target areas.
Some jammers have dynamic power adjustment function, which can automatically adjust the transmission power according to environmental changes. This function can minimize the interference with non-target signals without affecting the interference effect.
cellphone signal blockers can effectively interfere with mobile phone signals in the target area by emitting electromagnetic waves of specific frequencies. In order to avoid interference with non-target signals, the frequency, power and antenna layout of the jammer need to be reasonably set. Accurate signal interference can be achieved by selecting the appropriate frequency band, adjusting the transmission power, etc.