C-QuAM Stereo Decoder for AM Receiver

For actually hear the AM broadcast in stereo you need a special radio with an AM STEREO decoder chip. The Motorola C-QUAM (Compatible Quadrature Amplitude Modulation) system used by all AM stations which choose to broadcast in stereo today and MC13028 is one of chips to decode the AM stereo transmission.

In AM receiver block diagram, stereo decoder that accepts the signal from the IF of a receiver (450 or 455 KHz) and decodes stereo medium wave broadcasts. It operates at 8-15VDC and provides standard level left and right audio output for direct connection to the audio amplifier.

It may be used to support 30Hz-15KHz audio but it depends on the bandwidth of the receiver's IF.

Source: C-Quam AM Stereo Decoder MC13028 - visit the blog for schematic and printed circuit board (PCB) - Read more : Frequency Spectrum