This product is suitable for single sideband CW SSB mode power amplification in shortwave amateur radio stations. It has a high linearity and frequency response range, and can maintain low distortion and interference during signal transmission. Adopting automatic transmission and reception mode switching, seamless switching can be achieved, with good stability and reliability. The finished amplifier is equipped with heat dissipation fins, effectively solving the problem of heat generation during power amplification. The entire board design is more compact and lightweight, bringing us a more convenient, efficient, stable, and reliable wireless communication experience. Working voltage: DC12-13.8V Working current: up to approximately 6A Power interface DC socket: 5.5X2.1 (positive inside and negative outside) Frequency range: 3-28MHz Input power: 0.1-3W Output power: 30W (7MHz) 13.8V, approximately 15W when pushed with PIXIE 0.2W, and approximately 30W when pushed with Frog Song Kit 2.5W Switching method for sending and receiving: automatic Color: As Shown Material: Plastic+Metal Package Contents: 1X amplifier 4X screw Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.