QuadRF can spot drones and see WiFi through my wall

· Jeff Geerling · July 10, 2026, 3:04 p.m.
Summary
The blog post discusses the capabilities of the QuadRF, a phased-array radio using a Raspberry Pi 5 and FPGA for advanced signal processing, able to detect WiFi through walls and track drones. The author invites the reader to consider the implications of such technology beyond open-source development, hinting at potential government applications and surveillance capabilities.
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