The Wire · Drone & FPV News
By Justin Davis, Drone Camps RC · October 5, 2026
US defense tech firm CX2 has released Vadris SDR, a software-defined radio version of its FPV-mounted direction-finding payload. The idea is blunt, and the company states it openly: “Hunt the Archer, Not the Arrow.”
Vadris is a small radio sensor that mounts directly on an FPV drone. It detects radio activity, works out the direction it’s coming from, and overlays directional cues on the operator’s video feed — letting the pilot fly toward the transmitter, i.e. the enemy drone pilot or ground station, instead of chasing the drone itself.
The original Vadris was built to detect ExpressLRS — the open-source radio link half the FPV hobby flies on. The new SDR version adds TBS Crossfire and DJI OcuSync, and CX2 says more links can be added through software updates without new hardware.
CX2 claims more than 450 Vadris systems have already been fielded. It’s a striking example of how fast hobby-grade FPV tech — the same links in our transmitters — is being adapted at the military level.
