Welcome to our shop! Item Type: Power Amplifier Board Model: XR-109 Material: PCBA Operating Frequency: 400-460MHz Maximum Output Power (P1dB): 8.32W, 39.2dBm at 8V 1.56A, efficiency 66.6%. 6.76W, 38.3dBm at 7V 1.43A, efficiency 67.5%. 5.12W, 37.1dBm at 6V 1.26A, efficiency 67.7%. Input Power: 20~23dBm, 0.1~0.2W, it can work below 0.1W, the output power will increase with input power increase, and finally get to the maximum power point. Working Voltage: 5-8.4V (typical lithium battery supply voltage). Working Current: 1.6A, maximum. Input Impedance: 50 ohms Output Impedance: 50 ohms Input and Output Terminals: SMA K female head. Module Size: Approx. 4 x 5.5cm / 1.57 x 2.17in (excluding protrusions) Power: 8V power supply, output 39.2dBm, 8.3W, efficiency 66.6%. This power amplifier board is designed for reliable work and can operate below 0.1W with the output increasing as the input increases, reaching the maximum power point. Powered by 2pcs lithium batteries, it can achieve a maximum output of 39.2dBm 8.31W at 433MHz under 8V volt with 1.56A current. It has a broad utility and can be applied to digital transmission, extended range, remote control, power amplification, and more. The board is designed for high frequency performance and is suitable for RF, UHF, and other applications, providing higher working efficiency. With its compact size of 4 x 5.5cm and lightweight design, as well as an SMA K female head, it is easy to install. 100% Satisfaction: Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We try our best to provide you with satisfactory after-sales service.