3-28MHz 30W Short Wave Power Amplifier Board CW SSB Linear High Frequency rf power amplifier Name: Shortwave Power Amplifier Board Frequency range: 3-28MHz Input power: 0.1-3W Output power: 30W (7MHz) 13.8 volts about 15W when pushed by PIXIE 0.2W, about 30W when pushed by Frogsong Kit 2.5W<br><br>Operating voltage: DC 12-13.8V Working current: about 6A Max Switchover mode: Automatic pcb size: 60x100mm The finished board and parts are equipped with a cooling plate, but the cooling fan is not included. A cooling fan is recommended for daily use. The power cord can be directly welded to the pad, which can withstand more current. Colour:As Shown Material:PCB<br><br>Package Contents: 1 x Amplifier Board<br><br>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.