It is understood that the mobile phone signal jammer on the market can limit the distance between the mobile phone signal and the transmitter to more than 500M meters, and the distance is >20 meters. The protection radius is flexible, and only protects the signal of the mobile phone, without affecting various other electronic products. Power saving, power 20W-- 480w.
When the mobile phone is working, it is within a certain regular range. The mobile phone and the base station are connected by radio waves, and the transmission of information and sound is completed with a specific baud rate and inflection point technology. According to this interaction principle, the mobile phone signal jammer checks from the low-end regularity of the forward network to the high-end regularity at a certain speed during the whole working process. The mobile phone shows phenomena such as network hunting, no signal, and no service system.
Common smartphone signal jammers on the market meet the following frequencies: 869~894MHz; 825~960MHz; 1805~1880MHz and 1900~1990MHz, etc. The working frequency bands are CDMA800, GSM900, DCS1800, PCS1900, WCDMA, etc. Adjustable series about 40 meters in diameter, using DC-DC converter input voltage, 5V resulting voltage.
1 Slow start function
After the shield is activated, the force will change from none to stable within 4 seconds.
2 protection function
After activation is complete, smartphones within that breed will be blocked for 35 seconds.
Transmission frequency varieties: 860-960MHZ 1.800-1.990 GHZ.
Functional frequency bands: CDMA800, GSM900, DCS1800, PCS1900, PHS.
Control range: about 40 meters.
1. Boundary-driven communication signal defense.
2. Troop combat requirements.
3. Detention centers, labor camps, large and medium-sized detention centers.
4. Huge gathering places.
5. Precautions for leaders to go to safety and security.
6. University entrance assessment, adult entrance assessment, self-study examination and various schools.
7. Party and government organs, many large and small conference rooms, concert halls, and cinemas.
8. Gas stations, oil depots, oil areas, gas stations and other flammable and explosive places.
1. Select the area where you want to cut off the cell phone signal, and place the cutter on the table or wall in that area.
2. After the setting is completed, start the isolation switching power supply and start the power switch.
3. After the tool is connected, push the power isolation switch to work. At this time, all mobile phones on the website are in the state of searching for the network, and at the same time lose the signal of the base station. Neither the calling event nor the called party can establish a telephone call connection.
Briefly introduce the concept of a smartphone signal jammer (smartphone signal cutoff).
According to the above interaction concept, the mobile phone jammer scans regularly from the low-end frequency to the high-end frequency of the forward channel at a certain speed during the working process. The scanning rate will cause garbled interference in the information signal received by the mobile phone, and the mobile phone will not be able to find the typical information sent by the base station, thus ensuring that the mobile phone cannot establish a connection with the base station. The mobile phone is manifested as searching the network, no mobile phone signal, no solution system, etc.