Features 1.High performance and super durability. 2.The output power is raised to 3W, which has a strong remote communication capabilities, enhance the Forty-9er practicality. 3.Comes with ciecuit diagram, give you an efficient operation. 4.Brand new and high quality. 5.Increasing the side tone circuit, so that when you operate the transmitter, the headset can also listen to the keying signal. Specification Description: This is a very small shortwave radio transmitter receive assembled accessory for Forty-9er 3W. With high performance and super durability, it is a good part for people who enjoys DIY. Coming with ciecuit diagram can guide you to install well. Features: High performance and super durability. The output power is raised to 3W, which has a strong remote communication capabilities, enhance the Forty-9er practicality. Comes with ciecuit diagram, give you an efficient operation. Brand new and high quality. Increasing the side tone circuit, so that when you operate the transmitter, the headset can also listen to the keying signal. Specifications: Weight: 56g Board size: 6*6cm Package List: 1 * Unsoldered Circuit board 1 * Scattered Components Kit 1 * Circuit Diagram Package List