Feature 1、TWO TYPES OF OUTPUTS: Full band sound receiver include digital output or analog output two modes, digital output through the class D power amp drive output, analog output through the analog op amp drive output, in different modes, support different functions 2、SUPPORTED BANDS: Full band sound receiver analog output mode support AM(medium wave MW or short wave SW) aviation band, SSB(LSB lower band or USB upper band) 3、SOLDERING FREE: The sound receiver kit is designed to be beginner friendly as no welding is required. The module is pre welded, so you only need to assemble the battery, antenna, speakers, buttons, and housing to complete the project 4、FOR BEGINNERS: If you love the assembly project and are new to electronics, this sound receiver kit is an ideal starting point. You will gain the satisfaction of creation and understand the various components involved in a simple receiver 5、UHF EXPANSION: Full band sound receiver amp support for UHF band reception or transmission through the expansion board, suitable for adults and school students Item Type: Full Band Sound Receiver Material: PCB Host Battery: 1 x Polymer battery(not include) High Resistance Amp Battery: 1 x Polymer Battery, Battery Capacity: 800mAh (high resistance amp with built in battery) All Band Sound Receiver: Frequency Modulation: 64Mhz-108MHz AM Medium Wave MW: 520KHz-1710KHz AM Short Wave SW: 3.5MHz-30MHz Amplitude Modulated SSB: 3.5MHz-30MHz(BFO adjustment 0-2000Hz) Aviation Band: 118MHz-137MHz UHF Expansion: Support for UHF band reception or transmission through the expansion board Package List 1 x Motherboard 1 x Screen 1 x Antenna 1 x Speaker 1 x Volume Knob 1 x Wrench 1 x Nut 1 x Washer 1 x Adhesive Tape 1 x Red Cover 1 x Blue Cover 1 x Yellow Cover 20 x Screws 4 x M2x22 Nuts 4 x M2x11 Nuts 2 x M2x3 Nuts 4 x M2x5+3 Screws 6 x Case Frames 1 x Short Wave Antenna 1 x Medium Wave Antenna 1 x High Impedance Amp 1 x Storage Box