Item Type: Linear HF Power Amplifier_x000D_Material: PVC and Aluminum Alloy_x000D_Parameter:_x000D_Frequency: 1.5-54MHz_x000D_Operating Voltage Range: DC12-16V_x000D_Input Power: 3-5W_x000D_Input and Output Impedance: SMA at 50ohms_x000D_Air Cooling: Forced fan cooling 1Good Stability: The power amplifier adopts imported RF power amplifier tube for Motorola, which has better linearity and stability 2Good Heat Dissipation: The power amplifier is equipped with a large heat sink, has better heat dissipation and protection 3Working Performance: The working frequency of this amplifier is 1.5?54MHz, input power is 3?5W, can provide a high output power 4PVC and Aluminum Alloy Material: This power amplifier is made of PVC and aluminum alloy, features good strength and long last durability 5Application: This liner HF power amplifier board is suitable for YAESU FT?817 KX3 CW AM FM HAM radio etc.1 x_x000D__x000D_LinearHFPowerAmplifier