(SDR) is a radio broadcast communication technology that is based on software-defined wireless communication protocols rather than hard-wired. Frequency bands, air interface protocols and functions can be upgraded through software downloads and updates without completely replacing the hardware. 100KHz-1.7GHz full-band RTL-SDR receiver, can be connected to computers, Android phones and other devices to use SDR software to receive 100KHz-1.7GHz electromagnetic waves. Supports AM, FM (NFM, WFM), CW, , LSB, USB demodulation. Can listen to medium wave, short wave, FM broadcast, short wave single sideband communication, walkie-talkie calls, etc. (Newly added mute detection function: CTCSS, DCS; frequency sweeper, automatic scanning, etc.). Product advantages: Medium and short waves directly input the signal received by the antenna to the digital-to-analog conversion chip, solving the problems of signal loss, noise, waveform clutter, frequency deviation, etc. caused by the use of frequency converters, improving sensitivity, and the waveform display is clear and perfect, with high resolution and actual frequency. Includes host, UV small antenna, data cable, software and technical support. FM broadcast: 87MHz-108MHz, select WFM. Medium wave broadcast: 526.5kHz~1606.5kHz, AM. Short wave broadcast: 3MHz~30MHz, AM. Tower frequency: 118MHz-135.975MHz, AM Civilian walkie-talkie frequency: VHF: 136MHz-174MHz, NFM format UHF: 400MHz-470MHz, NFM format Amateur radio communication: Shortwave single sideband: 10MHz or less, commonly used lower single sideband LSB; 10MHz or more, commonly used upper single sideband USB. Ultra-short wave radio: generally adopts NFM standard, frequency is 50-54MHz, 144-148MHz, 430-440MHz Colour:gold Material:Aluminum Alloy Package Contents: 1 *RTL SDR Radio Receiver 1 * Cable 1 * Antenna 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.