Features 1.This product is suitable for shortwave amateur radio single sideband CW SSB mode power amplification, amateurs and professionals can use it to achieve more efficient and accurate SSB CW mode signal transmission and reception tasks. 2. It has high linearity and frequency response range, which can keep low distortion and interference during signal transmission. 3. It adopts automatic transceiver mode switching, which can realize seamless switching with good stability and reliability. 4. The finished amplifier is equipped with a heat sink, which effectively solves the problem of heat generation in the process of power amplification. 5. The whole board design is more compact and lightweight, which brings us a more convenient, efficient, stable and reliable wireless communication experience. Specification Operating voltage: DC12-13.8V Operating current: maximum about 6A Power interface DC holder: 5.5X2.1 (internal positive and external negative) Frequency range: 3-28MHz Input power: 0.1-3W Output power: 30W (7MHz) 13.8V with PIXIE 0.2W to promote about 15W output, the frog chirping kit 2.5W to promote about 30W Transmitter/receiver switching mode: automatic Size: 60*100mm Product Description: Shortwave amplifier board can only be used for shortwave amateur radio single sideband CW, SSB mode power amplifier, not suitable for other purposes. List 1 x Amplifier 4 x Screws