Gain value setting device and GSM (Global System for Mobile Communication) base station amplification system

The utility model discloses a gain value setting device, which comprises a digital signal processing module and an MCU chip, wherein the digital signal processing module is connected between a radio frequency down converter and a radio frequency up converter of a base station amplification system; and the MCU chip is connected between the digital signal processing module and the gain control chip of the base station amplification system. The utility model also provides a GSM base station amplification system. The gain value setting device and the GSM base station amplification system have the beneficial effects that the digital signal processing module is used for processing downlink radio frequency signals, the broadcast channel power is obtained and transmitted to the MCU chip, the MCU chip monitors the broadcast signal power and regulates setting of the gain control chip, and the function of automatic gain value setting can be realized. Accuracy of gain value setting is improved, and the working efficiency of setting the gain value of the control chip by installation and debugging personnel is improved.