The Received Audio Leveling Licence Key (HKVN4497) enables the activation of the Received Audio Leveling feature in a variety of Motorola radio models, including the DP1400, DP2x00/e, DP3xx1/e, DP4x0x/e, SL40x0/e, DM1x00, DM2000, DM4x0x/e, and R2 series. This feature ensures consistent audio levels, enhancing communication clarity and ensuring that users can hear incoming transmissions clearly and reliably across various environments. Upon activation, Received Audio Leveling dynamically adjusts audio levels in real time, compensating for fluctuations in signal strength and background noise, optimising audio quality for improved comprehension and operational efficiency.