Motorola APX 4000 Handbuch - Seite 10

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ON / OFF & VOLUME CONTROL:

The large knob located on top of the radio opposite of the antenna is used to turn the

radio on or off. A "click" will be felt when the knob has been rotated far enough to

either power the radio up or turn it off. Continuing to turn the knob clockwise once the

radio has powered up will adjust the volume; the further the knob is turned clockwise, the

louder the speaker output will be.

Once the radio has been powered up, the display will read "SELFTEST" and it will

automatically affiliate with a tower. The radio will remember the talk-group it was last

tuned to prior to being powered down and will attempt to affiliate with this talk-group.

Adjacent to the on/off/volume knob is a small three-position

switch labeled A B C. This switch can do different things

depending on how the radio is programmed. On the Franklin

County/CoMIRS radios, this switch has been programmed as a

Keypad Lock switch. When placed in the "C" position the keypad

is locked. When the switch is in the "A" or "B" position the

Keypad is unlocked.