# QuadRF can spot drones and see WiFi through my wall

DevFeed: [QuadRF can spot drones and see WiFi through my wall](<https://devfeed.tech/articles/quadrf-can-spot-drones-and-see-wifi-through-my-wall-10480.md>)

Original publisher: [Read original article](<https://www.jeffgeerling.com/blog/2026/quadrf-can-spot-drones-and-see-wifi-through-my-wall/>)

Author: jeff@jeffgeerling.com (Jeff Geerling)

Published: 2026-07-10T14:00:00Z

Content type: opinion

Language: en

Sources: [Jeff Geerling](<https://devfeed.tech/sources/jeff-geerling.md>)

Topics: [Network](<https://devfeed.tech/topics/network.md>), [Security](<https://devfeed.tech/topics/security.md>), [Open Source](<https://devfeed.tech/topics/open-source.md>), [Software](<https://devfeed.tech/topics/software.md>), [Flight](<https://devfeed.tech/topics/flight.md>)

Tags: [crowd-supply](<https://devfeed.tech/tags/crowd-supply.md>), [geerling-engineering](<https://devfeed.tech/tags/geerling-engineering.md>), [network](<https://devfeed.tech/tags/network.md>), [open-source](<https://devfeed.tech/tags/open-source.md>), [quadrf](<https://devfeed.tech/tags/quadrf.md>), [raspberry-pi](<https://devfeed.tech/tags/raspberry-pi.md>), [raspberry-pi-5](<https://devfeed.tech/tags/raspberry-pi-5.md>), [rf](<https://devfeed.tech/tags/rf.md>), [sdr](<https://devfeed.tech/tags/sdr.md>), [security](<https://devfeed.tech/tags/security.md>), [testing](<https://devfeed.tech/tags/testing.md>), [ui](<https://devfeed.tech/tags/ui.md>), [youtube](<https://devfeed.tech/tags/youtube.md>)

## AI overview

QuadRF is an open-source phased-array radio built around a Raspberry Pi 5 and FPGA board. The article describes its ability to process and beamform radio signals, detect drones, observe WiFi through walls, decode RF, and support local SDR applications. It also discusses a larger Moon-scale antenna-array project and testing a prototype.

## Source excerpt

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. It can see WiFi through walls and track drones in flight. If the open source community can come up with something like this, just imagine what governments are capable of. When you plug a computer into a network, tools like Wireshark can show all the hidden traffic you might not even know is there. WiFi packets are the same, but those travel through the air, allowing snooping without physical access.