Open source hardware for SDR, RF, and wireless security research
Great Scott Gadgets produces the HackRF One, an affordable half-duplex SDR widely used for security research and spectrum exploration. It provides quick USB-based access but significantly lower bandwidth and no full-duplex capability compared with Per Vices professional platforms. HackRF suits hobbyists or initial testing where budget constraints outweigh the need for high-performance continuous streaming.
Free