AM Stereo receiver

DETAILED DESCRIPTION This present inventor has found that a relatively hard AGC characteristic is desirable for purposes of stereo channel separation, while a relatively soft AGC characteristic is desirable for purposes of accurate receiver tuning.
The present invention is embodied in an AM stereo receiver system wherein a relatively soft AGC characteristic is provided during a tuning operation, and a relatively hard AGC characteristic is provided after tuning is complete.
Specifically, tuning is sensed by a suitable tuning detector.
When the output of the tuning detector indicates that the receiver is being tuned, the AGC system is conditioned to provide a relatively soft characteristic.
When the output of the tuning detector indicates that the receiver is not being tuned, the AGC system is conditioned to provide a relatively hard characteristic.