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Viking Portable 600 Radio Operating Manual

4-19

Evacuation Alert can be programmed to any radio, but is intended for, and only works 
with Fire Mode radios. The Evac Alert is sent by the Fire Commander radio and received 
by the Fire First Responder. The Fire First Responder radio will warn the user with and 
Evac Alert tone and message to notify the user to evacuate. This feature will only work on 
digital channels and can only be programmed as a function button.

Any radio can program an Evac Alert button; however, only subscribers that are optioned 
for Fire Ground Commander, and currently in Fire Commander Mode, can issue an Evac 
Alert. A press and hold is required for activation. If an Evacuation Alert message is 
received by the Fire Responder radio, the subscriber will flash “Evac Alert” on the display 
and sound the Evacuation Alert tone.

Any button press will silence the Evac Alert tone but only a PTT press will cancel the 
Evac Alert display message and exit the Evac Alert state.  A Fire Responder subscriber 
will only process one Evac Alert message every 60 seconds to avoid multiple Evac Alert 
tones sounding. This feature makes use of the P25 Signaling Retry Attempts and Retry 
Response Timer settings defined for the radio.

Evac Alert works in either simplex mode or through a repeater configured for data repeat 
mode, both of which require a Responder and Commander radio. Currently the EFJohnson 
infrastructure does not support the sending of Evac Alert messages so a Commander radio 
is required.

The Audible RSSI can be programmed to provide the Fire First Responder an audible 
indication when the RSSI drops below certain thresholds indicating a poor coverage area. 
When enabled, the First Responder radio will measure RSSI at the beginning of a call and 
may provide tone notifications after the call is over. The following provides the tones 
heard in each RSSI range. 

Table 4.3 RSSI Tones (Fire Ground Mode)

Above Good

3 or 4 bars

No tone

Above Fair, Below Good 

2 bars

2 beeps

Above OOR, Below Fair

1 bar

4 beeps

Below OOR

“X”

4 beeps