EW Jammer Dobrota 4 for FPV in 3 bands 720 - 1050 MHz

The portable counter-UAV system «DOBROTA 4» from the manufacturer REBy Dobroty is a compact and effective solution for local suppression of unauthorized FPV drone flights. The device is designed as a jammer with an output power of up to 50 W, allowing it to provide electronic suppression at a range of up to 150 meters depending on terrain conditions and signal direction. Thanks to three omnidirectional collinear antennas with high gain, «DOBROTA 4» creates a wide coverage sector without the need for precise aiming, quickly blocking drone control and video transmission channels.

Structurally, the portable system consists of the main EW device with three permanently installed antennas, a wired control panel, a battery, a battery charger, and a 12V to 28V inverter. This configuration makes «DOBROTA 4» a self-sufficient solution for rapid deployment at security positions, checkpoints, object perimeters, and temporary unit locations.

The system is designed to jam in the frequency bands 720-840 MHz, 850-980 MHz, and 980-1050 MHz, covering the main FPV bands. The technical specifications table also indicates a generalized range of 720 - 1050 MHz and an additional numerical designation «262» in the range field, which is retained from the official specification for data accuracy.

Power supply: the device operates from a 13 V source and supports operation from an external 12 V source (the parameter in the specification is listed as Power supply voltage (12/24/220): 12 V). The possibility of autonomous long-term operation from an internal battery is absent in the design (Ability to operate from internal battery: No), however, the characteristics show values for short-term battery operation — 30 min and 60 min, which allows for time-limited tasks without external power.

In operation, «DOBROTA 4» is recommended for use as a mobile electronic suppression point to protect small areas from small quadcopters and FPV drones. Thanks to collinear antennas and significant output power, the system is effective for creating a protected zone near the guarded object. When using, regulatory restrictions on the use of electronic suppression means should be taken into account, and actions should comply with current legislation.

Package Contents and Key Characteristics

• Manufacturer: REBy Dobroty
• Model: EW Jammer Dobrota 4
• Type: portable counter-UAV system
• Antennas: collinear, 3 pcs, omnidirectional
• Jamming output power: up to 50 W
• Electronic suppression frequency bands: 720-840 MHz, 850-980 MHz, 980-1050 MHz (generalized 720 - 1050 MHz)
• EW suppression range: up to 150 m (depending on conditions)
• Power supply voltage: 13 V (supports external 12 V source)
• Ability to operate from internal battery: No
• Continuous operation time on battery: 30 min; 60 min
• Product codified: No

Below is the official table of technical specifications, preserved from the original description for accurate reproduction of all parameters:

EW Jammer Dobrota 4 is the optimal choice in the REBy Dobroty lineup for field conditions and defense if you need a reliable, easy-to-deploy, and powerful FPV channel suppression tool. The system is best suited for rapid response to threats using mobile security and defense units, where operational deployment and effectiveness over short distances are crucial.

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