1. Software Defined Radio (SDR) Is A Type Of Radio Broadcast Communication Technology That Is Based On Software-Defined Wireless Communication Protocols Rather Than Through Hard Wiring. 2. Frequency Bands, Air Interface Protocols And Capabilities Can Be Upgraded Through Software Downloads And Updates Without Completely Replacing The Hardware. 3. 2100Khz-1.7Ghz Full-Band Rtl-Sdr Receiver, Which Can Be Connected To Computers, Android Phones And Other Devices To Use Sdr Software To Receive Electromagnetic Waves From 100Khz-1.7Ghz. 4. Support Am, FM (NF M, WFM), CW, DSB, LSB, USB Demodulation. 5. Can Listen To Medium Wave, Short Wave, Fm Radio, Short Wave Single Sideband Communication, Walkie-Talkie Calls, Aviation Band, Etc. (Added Mute Detection Function, Ctcs S, Dcs, Frequency Scanner, Digital Signal, Automatic Scanning, Etc.). Name:Full-Band Software Radio RTL-SDR RTL2832U+R820T2 Receiver Communication Interface:USB Interface Note:Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use. Colour:As Shown Material:Plastic+Metal Package Contents: 1 * Radio Receiver 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.