
The QuadRF project built a phase-coherent four-channel SDR using a Raspberry Pi 5 and a Lattice ECP5 FPGA. It operates in the 4.9 GHz to 6.0 GHz range with four patch antennas. An "RF camera" scans frequencies at 30 fps, visualizing detected signals overlaid on a camera feed to track radio sources like a drone.
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Summary by ByteBrief
Galileo signal updated for Internet-of-Things use