Motorola APX 1000 User Manual page 27

Your radio is preprogrammed to reset to medium
volume rate, which is Level 12, by default whenever
the radio powers up.
1 To increase the volume, rotate the Multi-Function
Knob clockwise.
A
2 To decrease the volume, rotate this knob
counterclockwise.
The display shows volume bars and volume level
when you change the volume.
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English