A Radio Frequency Amplifier (RFA) is an electronic device designed to amplify radio frequency signals, making them stronger for transmission or processing. RFAs are commonly used in various applications, including telecommunications, broadcasting, and wireless communication, where they enhance the quality and reach of signals. These amplifiers work by increasing the power of incoming radio signals without significantly altering their original characteristics. This process is essential for ensuring that signals can travel long distances and maintain clarity, which is crucial for devices like radios, cell phones, and satellite communications.