Scale RF Inc.
Video & Cameras
Software Defined Radio
This project is launching soon.
QuadRF democratizes modern phased array technology, bringing it down to Earth in an accessible, hacker-friendly, and programmable kit. At its core, QuadRF is a modular 4x4 MIMO software-defined radio tile with an open antenna architecture. Powered by an integrated Raspberry Pi 5, it functions out of the box as a real-time RF camera, expanding SDR exploration from the traditional time and frequency domains into the spatial domain.
While a single QuadRF is a complete, fully functional phased array development platform, it is also designed from the ground up as a building block for much larger arrays. Beamforming computation is distributed across each tile’s Lattice ECP5 FPGA, meaning users can link boards together to scale into square-meter scale phased arrays, such as our open-source 240-antenna MoonRF design.
QuadRF lets you directly explore the RF environment around you. See where signals are, the way they propagate, and how antennas and the surrounding environment interact. At 30 fps, you can map Wi-Fi devices in a room, quadcopters in the sky, or other wireless transmitters. Expanding beyond vision and LiDAR, your robots can use QuadRF to gain real-time spatial awareness of surrounding radio beacons and access points. It’s a complete, full-duplex SDR with dual polarization, and becomes a powerful tool for those looking to develop and experiment with true 4x4 MIMO and beamforming. Out of the box, it integrates directly into your existing workflow, ready to run popular frameworks like GNU Radio, SoapySDR, or your own custom RF code.
QuadRF is also a powerful diagnostic tool for engineers and hardware developers to debug their own RF products. You can use it to see exactly where a device is radiating or how signals change with an enclosure. Because QuadRF is full-duplex, it doesn’t just listen—it can also transmit probe signals to measure a spatial response. This allows users to characterize shadowing, absorption, reflections, material polarization effects, and general RF channels throughout the environment. For educators, QuadRF is a practical, hands-on teaching tool for university students learning about MIMO, phased arrays, and spatial wireless measurements.
To take this into the field, the included tripod converts into a mobile carry handle. It features an integrated smartphone holder that perfectly aligns your phone’s camera with the QuadRF array, allowing you to easily utilize augmented reality (AR) visualization on the go.
QuadRF uses a hybrid open model. We have open-sourced the elements where users are most likely to modify, extend, and build, while protecting the RF-core implementation that makes a low-cost 4x4 MIMO SDR tile possible.
Accessing the Files
All open-source software files and schematics are available right now. Antenna design files and simulations to be opened before the campaign completes.
You can sign up at the top of this page to be notified when the campaign launches and to receive other updates. We only send out relevant content, and you can unsubscribe at any time.
· scalerf.com · discord.gg/QPGVFTsNS4 · github.com/open-space-sdr/main · scalerf
We create accessible phased-array hardware for hackers, hams, educators, researchers, and wireless engineers. Our mission is to make coherent multi-antenna systems as approachable and programmable as low-cost SDR.
