Digital TV antenna amplifiers are generally designed to enhance the reception quality of digital TV signals, while 4G and 5G filters are designed to prevent interference from 4G and 5G wireless signals. These filters help ensure the clarity and stability of digital TV signals and avoid interference from other wireless signals.

The function of the amplifier is to enhance the strength of the digital TV signal, especially when the signal is weak, it can improve the quality of the signal and reduce image blur or signal interruption. 4G and 5G filters can prevent wireless signals from mobile communication networks from affecting the reception of digital TV signals.