Analysis of signal shielding range of signal jammer
The signal shielding range of a signal jammer primarily depends on its designed frequency bands and power output. Below are common shielding targets and technical details.
1. Main Types of Signals Shielded
1.1 Mobile Communication Signals (Core Function)
Typical devices can simultaneously jam all 2G to 5G bands with an effective range of up to 15 meters.
1.2 Satellite Communication Signals (Special Requirements)
Application scenarios: Commonly used in military bases and confidential meeting venues.
1.3 Short-Range Wireless Signals (Optional Function)
2. Technical Limitations of Shielding Range
mmWave 5G: Current mainstream jammers primarily target Sub-6GHz bands, with limited effectiveness against mmWave (e.g., above 24GHz).
Directional jamming: Jammers with antennas can precisely cover specific areas but require angle adjustment (directional jammers require an angle error ≤15°).
Penetration capability: Concrete walls can attenuate signals, reducing the effective range by over 50% (test data: 20 meters in open space vs. only 5 meters through two walls).
3. Signal Shielding in Special Scenarios
| Signal Type | Frequency Range | Application Scenario |
|---|---|---|
| Drone Signals | 2.4GHz and 5.8GHz | Requires jamming both remote control and video transmission signals |
| Walkie-Talkies | UHF (400-470MHz) and VHF (136-174MHz) | Special venues such as prisons |
| RFID Tags | 860-960MHz | Prevents false triggering of anti-theft tags |
4. Purchasing Recommendations
Summary
The shielding capability of a signal jammer is directly related to its frequency band design. Standard home devices focus on mobile signals, while special scenarios require customized multi-band combinations. Before purchasing, clarify requirements, ensure compliance with local regulations, and verify effectiveness with professional tools.
