Feature: 1. PORTABLE RECEIVER: This DSP digital demodulation receiver, based on SDR software defined radio architecture, has 192kHz wide spectrum and waterfall display capabilities, combined with 16bit sampling could achieve CW, AM, SSB, FM, WFM demodulation functions. 2. EXCELLENT RECEPTION EFFECT: This full frequency band amateur radio receiver is equipped with powerful DSP chip and a long retractable antenna, with excellent signal quality, can receive various channels without any interference. 3. LCD DISPLAY: The SDR receiver adopts all aluminum alloy CNC shell, equipped with 4.3 inch 800x480 resolution high brightness IPS LCD display. 4. COMPATIBLE HEADPHONE: With a compact size of 14x7.4x2.2mm, you can take it anywhere. Supports regular 3.5mm headphones or CTIA (US standard) interface headphones. 5. HIGH CAPACITY BATTERY: Built in 5000mAh 3.7V battery, can be used for about 10 to 12 hours (depending on the volume and brightness settings of the machine). Specification: Item Type: DSP SDR Radio Receiver Material: Aluminum alloy Display Technology: 4.3 inch IPS 800x480 resolution DC dimming high bright LCD screen Control Method: Resistive touch screen, rotary encoder Channel Selection: 1-99 Frequency: 100K to 149MHz, minimum step 1HZ Speaker Volume (SPK): 0-35dB, 1dB step Earphone Volume (EAR): 0-35dB, 1dB step Modulation: CW, LSB, USB, AM, WFM, STE (FM stereo), I Q AGC Settings: OFF, SLOW, MID, FAST Reference Level (REF): -99 to 99dB, 1dB step IF Gain: -12 to 67dB, 1dB step Spectral Style Settings: Green supplement, green line, blue supplement, white line Spectrum Bandwidth: RF spectrum (192kHz, 128kHz, 64kHz); Audio spectrum (64kHz) Waterfall Area Setting: Waterfall or waveform (amplitude x1 x8 x64) Five items that cannot be selected by the encoder: A. Battery level display B. Date and time settings C. Station information display: preset station name capability D. Display current spectral width E. Input (POWER) antenna port POWER display Working Mode: Single sideband CW, AM, SSB (LSB USB), WFM, stereo FM (requires headphones) Step Frequency: 1Hz 10Hz 100Hz 1kHz 10kHz 100kHz 1MHz 10MHz Spectrum Bandwidth: 192kHz, 128kHz, 64kHz, FFT real time spectrum display Antenna Interface: BNC male, impedance 50Ω, maximum input power -20dBm Reference Crystal Oscillator: TCXO 26MHz ±0.5ppm Audio Interface: Support regular 3.5mm headphones or CTIA (US standard) headphone interface Speaker Power: Maximum 3W, multimedia speaker 4Ω Charging Port: USB Type C, 5.0V 2A Current Consumption: About 250mA at 5V Battery Capacity: 5000mAh 3.7V (built in) Usage Time: About 10-12 hours, depending on machine volume and brightness settings Channel Saving: 99 channels can be preset, and the station name, frequency, and alignment method can be preset Description: The product is based on for Tayloe Quadrature Product Detector method to achieve frequency mixing. The clock generator Si5351 generates two variable frequency orthogonal square wave signals as excitation, achieving an ultra low noise ZIF zero intermediate frequency receiver. The IQ signal obtained after mixing is output to the CODEC and collected by the MCU, where the DSP algorithm completes signal demodulation and display.. Package List: 1 x DSP SDR Radio Receiver1 x Antenna1 x Data Cable1 x Instruction Manual Note: 1. This machine adopts an SDR architecture. If there is a strong transmitting station near you, there may occur cross station or mirror station. Please be aware.2. The input impedance of the antenna interface is 50Ω. For medium wave radio stations, it is recommended to connect a dedicated medium wave ring antenna externally to achieve better results.3. Before listening with headphones, please pay attention to the earphone (EAR) volume setting to prevent discomfort caused by excessive volume.