Operation CHARM: Car repair manuals for everyone.

FM Stereo

Frequency Modulation (FM) stereo gives the best sound. However, FM signals reach only about 10-40 miles (16-65 km). Tall buildings or hills can interfere with FM signals, causing the sound to come and go. If the reception is poor, tune to a stronger station in order to improve the reception.

All factory-equipped sound systems with a FM stereo radio will switch to stereo operation whenever an FM stereo broadcast is being received. One of the following indicators will light on the display:
^ STEREO
^ ST

Stereo operation means the radio is separating a stereo broadcast back into the original 2 channels, called left and right.