User's Guide

If you change to a different DMO talkgroup it may (depending on the customisation) terminate any
calls active through the repeater.
Using the Emergency Button in Repeater Mode
If you use the Emergency Button when your radio is operating in Repeater Mode, any calls that are
currently active through the repeater will cease. When the Alarm Call is subsequently cleared, the
radio may not necessarily remain in Repeater Mode.
Repeater states
A radio acting as a repeater can enter several states of operation, depending upon the status of calls
through the repeater and whether it has detected other users of the direct mode channel. These
states are reported as the following top level screen messages:
Message Description
Ready: Repeater The repeater is ready and has no calls in progress
Busy DMO Channel The repeater has detected that the DMO channel is being used. In
this case repeater operation is suspended.
In Call: Repeater A call is in progress through the repeater.
Talk Repeater Participating in a call and transmitting
84 SC21 Series hand-portable radio