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 ReceiverMaterial: Aluminum alloyDisplay Technology: 4.3 inch IPS 800x480 resolution DC dimming high bright LCD screenControl Method: Resistive touch screen, rotary encoderChannel Selection: 1-99Frequency: 100K to 149MHz, minimum step 1HZSpeaker Volume (SPK): 0-35dB, 1dB stepEarphone Volume (EAR): 0-35dB, 1dB stepModulation: CW, LSB, USB, AM, WFM, STE (FM stereo), I QAGC Settings: OFF, SLOW, MID, FASTReference Level (REF): -99 to 99dB, 1dB stepIF Gain: -12 to 67dB, 1dB stepSpectral Style Settings: Green supplement, green line, blue supplement, white lineSpectrum 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 displayB. Date and time settingsC. Station information display: preset station name capabilityD. Display current spectral widthE. Input (POWER) antenna port POWER displayWorking Mode: Single sideband CW, AM, SSB (LSB USB), WFM, stereo FM (requires headphones)Step Frequency: 1Hz 10Hz 100Hz 1kHz 10kHz 100kHz 1MHz 10MHzSpectrum Bandwidth: 192kHz, 128kHz, 64kHz, FFT real time spectrum displayAntenna Interface: BNC male, impedance 50, maximum input power -20dBmReference Crystal Oscillator: TCXO 26MHz 0.5ppmAudio Interface: Support regular 3.5mm headphones or CTIA (US standard) headphone interfaceSpeaker Power: Maximum 3W, multimedia speaker 4Charging Port: USB Type C, 5.0V 2ACurrent Consumption: About 250mA at 5VBattery Capacity: 5000mAh 3.7V (built in)Usage Time: About 10-12 hours, depending on machine volume and brightness settingsChannel Saving: 99 channels can be preset, and the station name, frequency, and alignment method can be presetDescription: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 ManualNote: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 50. 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.