Operating Principles and Usage Guidelines for Signal Jammers

Operating Principles and Usage Guidelines for Signal Jammers

Applicable Scenarios

1. Protection of border area communication signals

2. Military combat and tactical operations

3. Correctional facilities, including detention centers, prisons, and labor reform units

4. Large-scale public gatherings and events

5. Security protocols for official visits by government leaders

6. National examinations (e.g., college entrance exams, self-study certification exams) and university settings

7. Conference halls, concert venues, and theaters within government and corporate environments

8. Hazardous locations such as gas stations, oil depots, fuel storage facilities, and other flammable or explosive sites

Operating Instructions

1. Identify the area where mobile phone signals need to be disrupted and position the jammer securely on a desk or wall within that zone.

2. Connect the jammer to a power source and switch on the power supply.

3. Activate the jammer by pressing the operation switch. Once operational, all active mobile phones within range will lose connection to the base station and display "no signal" or "searching for network," making both incoming and outgoing calls impossible.

How Mobile Phone Signal Jammers Work

Based on the principle of mobile communication, a jammer operates by rapidly sweeping across the frequency bands used for mobile signals—from the lower to the upper ends of the assigned spectrum. This high-speed scanning creates signal interference that disrupts the normal data transmission between mobile devices and nearby base stations. As a result, mobile phones are unable to decode base station signals properly, preventing them from establishing or maintaining a stable connection. Affected devices typically enter a "searching for network" state, showing "no signal" or "no service."