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