HackRF One

https://greatscottgadgets.com/sdr/

• 1 MHz to 6 GHz operating frequency
• half-duplex transceiver
• up to 20 million samples per second
• 8-bit quadrature samples (8-bit I and 8-bit Q)
• compatible with GNU Radio, SDR#, and more
• software-configurable RX and TX gain and baseband filter
• software-controlled antenna port power (50 mA at 3.3 V)
• SMA female antenna connector
• SMA female clock input and output for synchronization
• convenient buttons for programming
• internal pin headers for expansion
• Hi-Speed USB 2.0
• USB-powered
• open source hardware