Operation CHARM: Car repair manuals for everyone.

Tune Knob

In order to manually tune in a higher radio frequency, turn the tune knob (the lower knob) to the right. When the high end of the radio band is reached, the radio will return to the lowest band frequency and resume tuning upward. The radio frequency will appear on the display while tuning.

In order to manually tune in a lower radio frequency, turn the tune knob to the left until the desired frequency is reached. When the low end of the radio band is reached, the radio will return to the highest band frequency and resume tuning downward. The radio frequency will appear on the display while tuning.