FPV drones have become one of the main threats to industrial sites and military positions. Unlike commercial quadcopters, FPV drones are often custom-built and operate on non-standard frequencies, which makes them harder to jam effectively.
Typical FPV drone frequency layout
A modern FPV drone normally uses three independent radio links:
- Control (RC link): most often 868-915 MHz (ELRS, Crossfire protocols) or 2.4 GHz (FrSky, ELRS 2.4G). Range: 3 to 30+ km depending on the system.
- Video link: 5.8 GHz - analog or digital (DJI O3, HDZero). Range: 1-5 km.
- GPS/GNSS: 1.575 GHz (GPS L1), 1.602 GHz (GLONASS). Used for stabilization and return-to-home.
To reliably stop an FPV drone, you need to jam at least two of these three links. Jamming only the video feed blinds the operator but the drone may continue flying autonomously if it has a pre-programmed route.
Why a single-band jammer is not enough
Many cheap jammers on the market cover only 2.4 GHz or only 5.8 GHz. Against commercial drones that may be sufficient, but modern FPV platforms are specifically built to survive partial jamming - if the control link switches frequency or the drone has GPS-based autopilot, a single band is simply not enough.
Choosing the right FPV countermeasure module
For reliable FPV protection, prioritize modules that cover:
- 868-915 MHz (modern ELRS control)
- 2.4 GHz (legacy and some current control links)
- 5.8 GHz (video)
- GPS L1 (navigation and autopilot)
Modular jammer architectures let you add or swap bands as the FPV threat evolves, without replacing the whole system. This is particularly useful because FPV platforms change frequency allocation faster than most other drone categories.
UAVDefen manufactures modular jamming systems specifically tuned for FPV threats, covering all four critical bands in a single portable or vehicle-mounted unit. Contact our engineers to configure a system for your specific threat profile.