Gain control can increase the dynamic range of the receiver, and to prevent strong signals cause overload.
增益控制可以增大接收机的动态范围，防止强信号引起过载。
2
These are high-output, high efficiency loudspeakers, featuring Wharfedale pro proprietary 12 "drive units and a purpose-built high quality Electro-Dynamic HF driver (with overload protection)."
By improvements of ultra-narrow bandwidth in receiving system, receiver's overload level and dynamic reserve have been increased, which is helpful to solve problems caused by overload distortion.