1Mhz-6GHz SDR Platform Software Defined Radio SDR Communication Parts Features: 1MHz 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 (50mA at 3.3V) 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   Specification: Condition: Item Type: SDR Platform Software Defined Radio Mainly Parts for HackRF One Hardware: RFC5072: Mixer provides local oscillator from 80MH to 4200H MA2837: 2.3G to 2.7GH Wireless Broadband RF Transceiver MAX5864: ADC/DAC.22MHZ sample rate 8bit LPC4320/4330: ARM Cortex M4 processor, clocked at 204MHz 5i5351B: i2C programmable arbitrary CMOs clock generator, 40MHz 50MHZ and sampling clock provided by 800MHZ frequency division MGA81563: 0.1-6GHZ 3V, 14dBm amplifier SKY13317: 20MHZ-6.0GHZ RF single-pole three-throw (sP3T) switch SKY13350: 0.01-6.0GHz RF single pole double throw (sPDT) switch   Taking the receiving process as an example, the flow of the signal after entering the antenna is as follows: 1. Determine whether to amplify via a 14dB amplifier by the RF switch 2. High-pass or low-pass filtering of the signal through the image rejection filter 3. Signal is mixed with RFFC5072 chip to 2.6GHz fixed intermediate frequency 1) The latest firmware supports variable IF options 2) Intermediate frequency range 2.150GHz-2.750GHz 4. The signal is sent to the MAX2837 chip and mixed to the baseband to output the differential IQ signal. 1) The MAX2837 chip can limit the bandwidth of the signal 5. The MAX5864 chip digitizes the baseband signal and sends it to the CPLD and microcontroller. TODO FIXME 6. CPLD 7. The LPC4320/4330 processor sends the sampled data to the computer via USB. 8. Protect the RFFC5072 and MAX2837 in a shield to prevent interference from the outside and other chips on the board, and try to prevent static breakdown.   Package List: 1 x Main Body 1 x Antenna 1 x Data Line 1 x Chip