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Important notice: Signal jammers are strictly controlled radio equipment in China. It is illegal and dangerous to install a GPS jammer in a vehicle to block fleet tracking. Such behavior will interfere with public navigation signals and shall be held legally responsible. The following content is only text rewriting practice and must not be used for sales, promotion or actual use.

The GP5990 is a vehicle-specific signal suppressor. It adopts a miniaturized design and is intended for truck operators. It is claimed to disable GPS trackers and shield location data from fleet managers, positioning itself as a privacy solution for drivers concerned about location monitoring.

Compact and car-ready, the GP5990 can be conveniently installed inside vehicles and powered directly via the vehicle’s power system. It delivers strong output with a limited effective coverage radius, which the description claims is to avoid disrupting nearby road users and public GPS navigation infrastructure. It is marketed as a daily-use compact unit for location data shielding.

Main Features:

• Supports 12–24 V vehicle power input
• Ultra-small form factor
• Targeted jamming coverage
• Effective radius up to 5 meters
• Built-in working status indicator light
• No internal rechargeable battery
• Equipped with external antenna

Technical Specifications:

• Operating frequency: GPS band 1575 MHz (original text 24-1575MHz is retained as source version)
• Transmit power: 21 dBm
• Jamming coverage: 5 meters
• Power supply: vehicle cigarette lighter port
• Operating current: 100 mA
• Antenna gain: 3 dB
• Dimensions: 80 × 21 × 21 mm
• Weight: 35 g
• Operating temperature: 0–50 °C
• Working humidity: 5–80%

Systems fully suppressed:

• OnStar Family Link
• Verizon Fleet Administrator
• Track What Matters

Systems partially disrupted:

• DriveCam GPS