E F Johnson Company 2425770 Benutzerhandbuch

6-12 

Viking Portable 600 Radio Operating Manual

Proceed as follows to send an emergency alarm:

1 If required, press the Emergency option button or select that menu parameter. The radio 

then automatically transmits the emergency alarm.

2 Either Normal or Silent operation can be programmed. With the Normal mode, the red 

LED lights, the emergency tone sounds, and “EMERGENCY” flashes in the display. 
This indication continues to flash until the alarm mode is ended (see Step 4). If silent 
programmed or the Surveillance mode is selected (see Section 4.10), none of these 
indications occur. If “No Receive Activity During Emergency” is programmed, receive 
audio, the front panel LED, and receive icons are disabled in the receive mode.

3 When the emergency alarm is acknowledged, “Ack Rcvd” is briefly displayed and the 

emergency acknowledge tone (five beeps) sounds. Silent operation may also be 
programmed in which case no tone sounds and there is no indication that an 
acknowledgment occurred.

4 The radio continues to transmit this message until an acknowledgment is received or 

the programmed number of attempts have been made. The emergency alarm mode is 
exited when radio power is cycled or by pressing and holding the Emergency option 
button.

This feature notifies a user when an emergency call is being made on their selected P25 
Trunking Talkgroup.

If an emergency call is received by the radio on the selected channel, the emergency alarm 
ACK tone will sound (5 consecutive tones), and the “Emerg Rcvd” message will display, 
followed by the unit ID of the emergency radio. If any other emergency calls are made 
after this initial one using a different radio, the tone will not sound, but the unit ID will be 
updated to reflect the most recent emergency call. To exit this state, press the button 
programmed for “Emergency Clear”. The radio should return to its normal display, and the 
“Emerg Rcvd” message should no longer show.

An emergency call urgently requests access to a voice channel (an emergency tone usually 
does not sound at the console unless the call is combined with an Emergency Alarm). An 
emergency call is placed by pressing the PTT switch after pressing the Emergency option 
button or selecting the Emergency menu parameter. If the Emergency Hot Mic feature is 
enabled, the emergency call is automatically transmitted without having to press the PTT 
switch (see following description).