Sharp XL-3000 Operation Manual page 23

To receive an FM stereo transmission:
Press the FUNCTION (BAND) button to display the "ST" indicator.
z " " will appear when an FM broadcast is in stereo.
FM stereo mode indicator
FM stereo receiving indicator
z If the FM reception is weak, press the FUNCTION (BAND) button
to extinguish the "ST" indicator. The reception changes to mon-
aural, and the sound becomes clearer.
After use:
Press the POWER button to enter the power stand-by mode.
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