Advanced Features

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NOTE: Turning this feature on or off is limited to radios with this function enabled. Check with your dealer or system administrator for more information.

Procedure:

Press the programmed VOX button to toggle the feature on or off.

OR

Follow the procedure below.

1S to access the menu.

2Por Q to Utilities and press N to select.

3Por Q to Radio Settings and press N to select.

4Por Q to VOX and press N to select.

5The display shows VOX On. Press N to disable VOX. A tone sounds and the display shows VOX Off.

OR

The display shows VOX Off. Press N to enable VOX. A tone sounds and the display shows VOX On.

If the Talk Permit Tone feature is enabled (see Turning the Talk Permit Tone On or Off on page 61), use a trigger word to initiate the call. Wait for the Talk Permit Tone to finish before speaking clearly into the microphone.

Turning the Public Address System On or Off

You can enable and disable the radio’s internal public address (PA) system.

Procedure:

Press the programmed PA On/Off button to toggle the feature on or off.

Turning the External Public Address System On or Off

You can enable or disable the audio routing between the connected public address (PA) loudspeaker amplifier and the radio’s internal public address (PA) system.

Procedure:

Press the programmed Ext PA On/Off button to toggle the feature on or off.

Controlling the Display Backlight

You can set the radio’s display backlight intensity to either Low, Medium, High, or Off, to light up the display and the Menu Navigation Buttons backlighting accordingly. The setting also affects the keypad backlighting on a keypad microphone.

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Motorola 4580, 4550  Turning the Public Address System On or Off,  Turning the External Public Address System On or Off

4550, 4580 specifications

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