A basketball sports whistle having an integral basketball possession indicator at the eye level of the referee enables the referee to accurately determine which team is entitled to possession of the basketball without diverting his eyes from the basketball court. After forming the package body over the integrated circuit device, unplated portions of the exposed bottom surface of the selectively plated lead frame are partially etched to form recessed lead ends at the outer peripheral region of each contact lead, and the recessed lead ends are subsequently re-plated to provide wettable recessed lead ends at the outer peripheral region of each contact lead. This input digital signal can be an oversampled digital signal, where the digital signal is oversampled relative to downstream processing. The process provides polyethylene with good bulk density. An example equalizer described herein includes a high frequency amplifier to receive an input signal and to amplify a high frequency portion of the input signal, a low frequency amplifier to receive the input signal and to amplify a low frequency portion of the input signal, and a weight factor controller to control a gain of the high frequency amplifier and a gain of the low frequency amplifier. The current control loop also decreases the current in the primary side responsive to the current adjustment signal so that a brightness of each LED connected to the secondary side is decreased by an amount corresponding to the magnitude of the current adjustment signal.