Features: DIY kit: This product is a self-assembled kit that supports CW modulation and is suitable for point-to-point communication. Multifunctional module: The product integrates transmitter and receiver functions, enabling the transmission and reception of radio signals. Broadband coverage: The product operates in the frequency ranges of 7.023MHz to 7.026MHz, providing stable shortwave communication services and strong anti-interference capabilities. Function: It can easily capture frequency, greatly facilitating beginner enthusiasts to enjoy the fun of radio! Amateur radio: As an amateur radio shortwave transmitter and receiver module, it can meet the needs of radio enthusiasts for shortwave communication. Specifications: Material: Printed Circuit Board Board Size: Approx. 5x5cm/1.96x1.96inch Power supply: DC9V-14V Antenna: 50ohm, unbalanced Receive quiescent current: 10mA@9V Transmit power: 0.8W@9V, 1.2W@12V Frequency ranges:transmitting local oscillator 7.023MHz, receiving local oscillator 7.023-7.026MHz Working modes: CW Package Includes: 1 Piece 4.1 Version PIXIE Kit CW Transceiver Shortwave Radio Station 7.023MHz-7.026MHz with Buzzer Transceiver note: This kit is not soldered, and all the shipped electronic components are loose part, customers need to DIY assemble them themselves (the finished product pictures displayed in our store are for reference only when purchasing). Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.