Komatsu HM400-1, Manual

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OPERATION
EXPLANATION OF COMPONENTS
TONE CONTROL KNOB
If this knob (2) is turned to the right, the high tone is emphasized;
if it is turned to the left, the high tone is reduced.
DISPLAY
This display (3) shows the radio reception frequency and the
operating mode.
CLOCK BUTTON/DISPLAYING FREQUENCY
When this button (4) is pressed, the display changes to the time.
If it is pressed again, it displays the frequency.
AST
When this button (5) is pressed, the preset stations are called up
in turn.
When the desired broadcasting station is reached, press the
button again to stop it.
If the button is kept pressed continuously for 2 seconds, it is set to
auto memory.
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