High Power 270W Desktop GSM Jammer for 4G WiFi GPS VHF UHF Blocking

Nine frequency bands, nine adjustable channels, one desktop platform. The T-B9 network blocker delivers a total output power of 270W, divided evenly across 9 frequency bands (30W/band). The knob design on the chassis allows each channel to work independently, rather than forcing all frequencies to operate at the same power.

The desktop GSM jammer supports multiple frequency ranges, including:

A high-power T-B9 with up to 270W requires a cooling system capable of keeping up with continuous operation.

It uses a combination of:

• High-efficiency aluminum alloy heatsink
• Four internal cooling fans
• Overheat protection
• VSWR protection system

The aluminum alloy cooling body helps transfer heat away from internal components, while the fan system improves airflow inside the chassis.

It can also be equipped with optional antenna types:

9 High-Gain Directional Antennas

• Concentrates energy toward a selected direction
• Suitable for areas requiring focused coverage

360° Omnidirectional Antennas

• Provides wider surrounding coverage
• Suitable for open areas where broader distribution is needed

The stationary wireless signal jammer uses an AC 110-240V power input, supporting stable desktop operation in different regions.

The working range reaches approximately 10-120 meters, depending on surrounding signal strength, obstacles, antenna type, and installation conditions.