EW Jammer «DOBROTA 2» — Portable UAV Countermeasure System (300 - 520 MHz)
EW Jammer Dobrota 2 — a portable counter-UAV system for quadcopter-type unmanned aerial vehicles, designed for reliable protection against unauthorized FPV drone flights. Developer: REBy Dobroty. Product category: EW Jammers > Trench EW Jammers. The device functions as a radio jammer in the 300 - 520 MHz ranges and allows for quick blocking of UAV communication channels to control airspace.
Design and Operation Features
The system operates as a jammer for the 300-520 MHz frequency bands and is equipped with an omnidirectional antenna with high gain. The design includes two collinear antennas, which are non-removable, increasing reliability in field conditions. The practical range of signal suppression is up to 150 meters, depending on terrain conditions and UAV design.
Package Contents
- EW jammer device with two built-in antennas (collinear, non-removable).
- Wired control panel for operational system management.
- Rechargeable battery and charger for the battery.
- Inverter for voltage conversion 12V → 28V.
Technical Specifications
| Antenna type | Collinear |
|---|---|
| Jamming power at the output of the jamming device, W | 50 |
| Electronic suppression frequency ranges | 260 |
| Electronic suppression frequency ranges | 300 - 520 MHz |
| Electronic suppression range, m | 150 |
| Supply voltage, V | 13 |
| Supply voltage (12/24/220) | 12 V |
| Ability to operate from internal battery | No |
| Continuous operation time on battery, min | 30 |
| Continuous operation time on battery | 60 min |
| Product codified | No |
The jamming power at the generator output is 50 W, which allows for effective interference with communication channels in the specified ranges. The device's power supply is primarily designed for 12 V (the specification also indicates 13 V). The kit includes power supply and voltage conversion means via a 12V→28V inverter, allowing the system to be used with various power sources.
The DOBROTA 2 command-class system is designed for operational use by security forces, at private facilities, and in units that require a fast and reliable tool for blocking FPV drones. Thanks to its portable design, built-in antennas, and control elements, it ensures simple operation in field conditions.
Manufacturer: REBy Dobroty. Model name: EW Jammer Dobrota 2 from FPV Reduced 300 - 520 MHz.
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