Hacker News·4 min read·medium
QuadRF can spot drones and see WiFi through my wall
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speckx✦AI Summary
The QuadRF is a new open-source phased-array radio system built on a Raspberry Pi and FPGA that can detect drones and WiFi signals through walls. While the technology has significant surveillance implications, its creator intends it for radio astronomy and experimental RF research.
The QuadRF (pictured above) a phased-array radio built around a Raspberry Pi 5 and an FPGA board with picosecond-level timing. It does advanced signal processing and beamforming.
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