With an input power of 5 watts, the XPA125B amplifier can output a transmission power up to 100 watts, help you reach a longer communication range. | Comes with a built-in automatic antenna tuner and it's independent of the PA unit of the XPA125B, therefore, it can also be used as either an automatic antenna tuner or a separate power amplifier. Maximum tuning range: 14-500Ω. | Frequency range: 1.8-30MHz & 50-54MHz. Works with QRP & HF transceivers, such as Xiegu X5105, G90, G1M & X108G transceivers. | A New Improved Version: After improvement on its look and the size, it's smaller than the old version and more portable to carry with the hand strap like a little suitcase. | Equipped with a 2.7 inch large backlit display, it can clearly show you the input/output power, SWR, voltage, current, temperature, status and warning messages. This makes the operation simple and user-friendly.