Features: Uses the original RM PIC12F629 microcontroller for manual/automatic key control, featuring functions like automatic call signal transmission, control of transmit and receive indicator lights, and is very convenient and practical. When using the auto button, the microcontroller can adjust the encoder's speed and side tone frequency, input call signals on its own, and supports power-off saving. Using high-quality function amplifiers for secondary audio active filtering significantly improves the listening performance of the Super RM with extremely low background noise and excellent amplitude-frequency characteristics. Power has been increased to 4W (D882 output), and the kit uses two American magnetic rings (FT37-43 and T37-2) each, giving the Super RM strong remote communication capabilities and enhancing practicality! The transmission frequency is 7.023MHz, and the receiving frequency is adjustable from 7.023 to 7.026MHz. A new frequency shift control circuit using 2N7000 is used to improve the audio quality of the pat frequency and listening. Specifications: Material: Printed Circuit Board Size: Approx. 100x60mm/3.93x2.36inch Adjust Release Speed: Supported Function Button: 1 Automatic Call Signal Transmission: Supported Power Supply: 12V Receiving Static Current: 25mA@12V Output Power: 4W@12V Frequency Range: Transmitting local oscillator 7.023MHz, Receiving local oscillator 7.023-7.026MHz Working Modes: CW Note: This product is a loose part, not a finished product, and users need to assemble it themselves. Please allow 1-2cm error due to manual measurement. Please consider slight color differences due to different screen resolutions. Package Includes: 1x PIC Version Super RM CW Transceiver Shortwave Radio Module Board Kit