1、Software Defined Radio (SDR) is a new type of radio broadcast communication technology based on software-defined wireless communication protocols rather than hardwired. 2、Bands, air interface protocols and functions can be upgraded through software downloads and updates without need to completely replace the hardware. 3、100KHz-1.7GHz full-band RTL-SDR receiver can be connected to computers, for Android phones and other devices. 4、Use SDR software to receive 100KHz-1.7GHz electromagnetic waves to support AM, FM(NFM, WFM), CW, DSB, LSB, USB demodulation. 5、Can listen to medium wave, short wave, FM radio, short wave single sideband communication, two-way radio call, aviation band and so on. (Add mute detection function: CTCSS, DCS; frequency sweeper, automatic scanning, etc). Item Type: RTL-SDR Receiver FM Radio: 87MHz-108MHz, choose WFM Medium Wave Radio: 526.5kHz~1606.5kHz, AM Shortwave Radio: 3MHz~30MHz, AM Airport Tower Frequency: 118MHz-135.975MHz, AM Civil Two-Way Radio Frequency: VHF: 136MHz-174MHz, the system is NFM UHF: 400MHz-470MHz, the system is NFM Amateur Radio Communication: Shortwave single sideband: commonly use lower single sideband LSB below 10MHz; commonly use upper single sideband USB above 10MHz. Ultrashort Wave Radio: Generally adopts NFM system, frequency is 50-54MHz, 144-148MHz, 430-440MHz 1 x Receiver 1 x Data Cable 1 x Antenna