Published on July 10, 2026, Jeff Geerling’s account presents QuadRF, a phased-array radio built with a Raspberry Pi 5 and an FPGA board. It uses signal processing and beamforming to track drones and detect Wi-Fi through walls.
On July 10, 2026, Jeff Geerling described QuadRF, a phased-array radio built with a Raspberry Pi 5 and an FPGA board. The system uses signal processing and beamforming to track drones and detect Wi-Fi through walls. The account notes that these detection capabilities matter to engineers assessing privacy and security in wireless networks.
The description gives no performance metrics or testing details. Consult Jeff Geerling’s original account to check the project and its methods; do not treat detection alone as proof of access to a network’s content.