User guide

ASTRO Digital Spectra and Digital Spectra Plus Model W4, W5, W7, and W9 25
General Radio Features
Emergency Call and Alarm
The emergency call and alarm features allow you to have priority
channel access and/or send an emergency data transmission to the
dispatcher in an emergency situation.
The desired type of emergency feature—alarm, call, call and alarm,
or silent alarm—can be preprogrammed by a qualified radio
technician.
The radio must be turned on to activate any emergency feature.
Emergency Call
Emergency call gives you priority access to a voice channel for all
subsequent transmissions after you press the emergency button. The
level of priority access is determined by the system manager.
SmartZone™ Emergency Call Receive Operation
A radio configured for SmartZone operation displays EMER RCV
whenever it receives an emergency call. The display alternates with
the selected-mode display as long as the radio is unmuted to the
emergency call.