Car Radio Muting System in the Nokia CARK-91 and Circuit Schematic
Tuesday, October 6th, 2009The following picture shows you with circuit schematic of the car radio muting of Nokia CARK-91, a car kit that offers mute feature of the car radio automatically during a conversation. A muting unit or auxiliary relay must be used when the car radio doesn’t have a mute feature available as this feature provides for safer handsfree operation.

