Extreme weather such as rainstorm poses challenges to outdoor communication. Mobile phone signals usually weaken on rainy days because rainwater absorbs and scatters radio waves, especially 4G/5G high-frequency signals.

In the field of mobile signal amplifiers, Automatic Gain Control (AGC) and Automatic Level Control (ALC) are important technologies used to adjust signal strength.AGC focuses more on real-time response to signal transient changes, and can quickly adjust for sudden large signal peaks to avoid saturation distortion; For weak signals, increase the gain to ensure that they can be received correctly.ALC tends to focus more on long-term level balancing, maintaining overall signal stability and preventing long-term level drift from affecting reception quality, especially in environments with mixed signals or network congestion.

A Cellular Signal Booster,also known as a repeater or signal booster,is an electronic device specifically designed to enhance mobile signals.They are used to improve the quality of communication and data transmission. However, some improper use may cause interference to cellular network base stations.