Signal strength indicator circuit for a radio receiver employing AGC

摘要

A signal strength meter circuit for an FM radio receiver employing automatic gain control. The signal strength meter circuit includes circuitry for establishing a range of voltages on an AGC line of the receiver corresponding to a range of signals received by the receiver and for providing deflection of a needle of a signal strength meter over the entire range. At such time as AGC circuitry in the receiver draws current from the meter circuit, the meter continues to display this current by the deflection of the needle of the meter.