1. For One Is A Software-Defined Radio Peripheral Capable Of Transmitting Or Receiving Radio Signals From 1mhz To 6ghz. 2. Designed To Enable The Testing And Development Of Modern And Next-Generation Radio Technologies, For One Is An Open Source Hardware Platform That Can Be Used As A Usb Peripheral Or Programmed For Stand-Alone Operation. 3. For One R9 Upgrade: Replace Max2837 With Max2839. Si5351c Is Replaced By Si5351a With Additional Clock Distribution. Added A Series Diode To The Antenna Port Power Supply. 4. Supports The Latest Firmware, The Current Firmware Defaults To Firmware V1.7.0. 5. For Some Functions, Such As World Map, Gps Simulator, Etc., You Need To Prepare A Portapack H2 And A Fat32 Format Micro-sd Card Exceeding 1g. Working Frequency Is 1mhz - 6ghz Up To 20 Million Samples Per Second 8-Bit Quadrature Sampling (8-Bit I And 8-Bit Q) For Radio, Sdr#, Etc. Software Configurable Rx And Tx Gains And Baseband Filters Software Controlled Antenna Port Power Supply (50ma At 3.3 V) Sma Female Antenna Connector Sma Bus Clock Input And Output Synchronization Convenient Programming Buttons Internal Pin Headers For Expansion Hi-Speed Usb 2.0 Usb Powered Open Source Hardware:For One 1mhz To 6ghz Sdr Platform Development Board Note:Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use Colour:Black Material:PCB Package Contents: 1 * Motherboard Module 1 * Antenna 1 * Data Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.