Grec 4M Dome EW Jammer with Quadrifilar Antennas from BlueBird is a specialized electronic device for protection against FPV unmanned aerial vehicles in the 470-1050 MHz frequency range. The device is designed for rapid deployment on both stationary positions and mobile platforms: vehicles, poles, and other carriers. The design combines dome (quadrifilar) antennas and four independent jamming bands, allowing simultaneous jamming of signals in several key FPV ranges.

Description and Purpose

Grec 4M provides effective jamming and interference with popular FPV transmitters thanks to four separate jamming bands: 470-530 MHz, 700-820 MHz, 800-920 MHz, 900-1050 MHz. The casing is made of heat-dissipating materials and equipped with a cooling system to prevent overheating, ensuring reliable operation in intensive modes. The dust and moisture protection level complies with the IP54 standard, guaranteeing stable operation in challenging field conditions.

Technical Specifications:

• Frequency Range: 470-530 MHz, 700-1050 MHz (total coverage 470-1050 MHz).
• Power Supply: 220 V or 28 V.
• Number of Antennas: 4 pcs. (dome, quadrifilar).
• Mounting Bracket: bracket for 4 antennas on a vehicle or pole — 1 pc.
• Connecting Cables: 4 pcs., 2 m each for each band.
• Casing Size: 370x295x134 mm.
• Total Length when Assembled: 830/630 mm.
• Antenna Length: 600/400 mm.
• Total Power: (50+50+50+50) W.
• Power Consumption: (150+150+150+150) W.
• Effective Range: from 70 m to 400 m, depending on the distance to the pilot, FPV drone frequency, and environmental conditions.
• EW Jammer Weight without Battery: 7 kg.
• Operating Temperature Range: from -30°C to +50°C.

Grec 4M Dome EW Jammer Package Contents:

• 1. EW jammer device.
• 2. Four quadrifilar antennas, frequencies: 420-750 MHz, 700-850 MHz, 800-950 MHz, 900-1050 MHz.
• 3. 220 V power cable.
• 4. Bracket for mounting 4 antennas on a vehicle or pole.
• 5. Antenna unit patch extension cable for each band (4 pcs., 2 m each).
• 6. User manual: Grec 4M.

Optional Accessories:

• Springs for mounting antennas on a vehicle: 4 pcs.
• Remote control: 1 pc.
• Additional antennas: as needed.

The Grec 4M Dome EW Jammer is designed as a comprehensive solution for rapid deployment of an electronic warfare system: four independent amplification bands and carefully selected quadrifilar antennas provide a wide area of enemy radio communication suppression, while maintaining compact dimensions and the ability to mount on vehicles or poles. With a weight of 7 kg without battery and dimensions of 370x295x134 mm, the device is convenient for transportation and installation in field conditions.

Manufacturer: BlueBird. Product Category (by description): Dome EW Jammers. Category in system: EW Jammers > Trench EW Jammers.

Key advantages: reliable 470-1050 MHz coverage, four separate jamming bands, dome quadrifilar antennas, IP54 protection, wide temperature range from -30°C to +50°C, 220 V or 28 V power supply capability, ready-to-use kit with bracket and cables for quick installation.

This set of parameters and components makes the Grec 4M Dome EW Jammer an optimal choice for protecting strategic objects, military positions, and ensuring security during operational actions against the use of FPV drones.

Other products in this category here Trench EW Jammers

Dome EW Jammer Hrets 4M with Quadrifilar Antennas