What is TVG (Time-Varying Gain)? Garmin Livescope

Time-Varying Gain (TVG) in Garmin LiveScope is a feature that adjusts the sensitivity of the sonar signals over different depths. It enhances the clarity of targets by compensating for signal loss that occurs as the sonar beam travels deeper into the water. TVG ensures that echoes from both shallow and deep depths appear clearly on the display, maintaining consistent visibility and detail across varying water depths. This feature is essential for maintaining a balanced and clear representation of underwater objects and structures, regardless of their depth, thereby assisting anglers in accurately identifying and tracking fish and other underwater targets throughout their fishing expedition. Adjusting TVG settings allows users to optimize their LiveScope experience for different fishing conditions, ensuring reliable performance and enhanced usability on the water.