In addition, each alarm has the following types:

Regular Radio transmits an alarm signal and shows audio and/or visual indicators.

Silent Radio transmits an alarm signal without any audio or visual indicators. Radio receives calls without any sound through the radio’s speaker, until you press the PTT button to initiate the call.

Silent with Voice Radio transmits an alarm signal without any audio or visual indicators, but allow incoming calls to sound through the radio’s speaker.

Only one of the Emergency Alarms above can be assigned to the programmed Emergency button or the Emergency footswitch.

Receiving an Emergency Alarm

Procedure:

1When receiving an Emergency Alarm, the display shows the Emergency icon, the number of alarms received, and Alarm Rcvd, which alternates with the alias or ID of the sender.

2A tone sounds and the red LED blinks.

3Your radio automatically acknowledges the Emergency Alarm (if enabled).

When your radio receives an Emergency Alarm, it displays the

 

Emergency Alarm received indications until acknowledgement

 

is sent (if enabled) and you exit the Emergency mode.

Advanced

You will not be able to receive any other indications or displays

 

for any other calls until you exit the Emergency Alarm received

 

screen.

 

NOTE: Press R, then press Emergency Off button

 

immediately to clear the Emergency Alarm received

Features

indications and exit Emergency mode.

 

Press R, then press Emergency On button

 

immediately to toggle the Emergency feature between

 

hidden or shown.

 

When your radio receives an Emergency Alarm, and you

 

change the radio channel, the Emergency Alarm list is hidden.

 

The new channel displays the Emergency icon and the red LED

 

blinks. When you change the radio channel back to the previous

 

channel, it also displays the Emergency icon and the red LED

 

blinks.

 

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Motorola 4550, 4580 manual  Receiving an Emergency Alarm

4550, 4580 specifications

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