Antenna Interface: Standard SMA Female Gold-Plated Connector, Automatic Switching Between 50Ω And High-Impedance Input Modes. ≤50Mhz, Use High-Impedance Input, Suitable For Rod Antenna Listening To Long Wave, Medium Wave, Short Wave Programs; Greater than 50mhz, Use 50Ω Impedance Input. Headphone Interface: 3.5mm Headphone Interface For Stereo Audio Output. Standby Button: Short Press To Pause The Screen When The Phone Is On, And Then Press Again To Turn On The Screen;Press And Hold To Enter Standby Mode When The Phone Is Powered On, And Then Press And Hold To Exit Standby Mode. Charging Indicator Light: The Red Light Turns On During Charging, And The Green Light Turns On When Charging Is Completed. Type-Ce: Charging And Usb Signaling Functions, Connect The Machine To The Computer And Use It With Hdsdr Software. Touch Screen Control Area: Volume Control Rotary Encoder: Set Volume, Attenuation, Audio Filter And Other Parameters. Frequency Control Rotary Encoder: Set Parameters Such As Frequency Value, Step Value, Etc. Function: The Malachite Receiver Is Built According To The Sdr Software-Defined Radio Principle. Based On This Relatively Common Hardware Platform, Different Communications Are Achieved By Loading Different Software. Cnc Aluminum Shell Design, Anodized, High-End And Classy; Description: 1. Frequency Range: 10Khz~250Mhz, 400Mhz~2Ghz 2. Spectrum Width: 160Khz, 80Khz, 40Khz 3. Modulation Type: AM, SSB, DSB.CW.NFM, WFM (Stereo Rds) 4. Sensitivity: 0.3UV Up To 1Ghz 5. Dynamic Range: 82Db 6. Antenna Interface: Single Antenna Port Design, Standard Sma Female Gold-Plated Connector, 50Ω And High Resistance Input Mode Automatic Switching, Built-In Rf Preamplifier And 0-30db Programmable Rf Attenuation Device; 7. Battery Capacity: Built-In 3.7V 5000mAh Ultra-Large Capacity Lithium Battery, With A Batt