MM23016
TG a
TG b
TG c
TG x
TG y
TG z
TG d
TG e
TG f
TG a
TG d
TG g
TG h
TG i
TG = Talk Group
Profile 1 Profile 2 Profile 3
Figure 6-3: Personality Structure Example
6.10.2 Talk Groups
A talk group represents a set of users that regularly need to communicate with one another. There can be
any number of authorized users assigned to a talk group. Talk groups are established and organized by the
OpenSky network administrator. An OpenSky talk group is similar to a channel within a conventional FM
radio system.
6.11 ALERT TONES
The M7200 radio also provides audible Alert Tones or “beeps” to indicate the various operating conditions (see
Table 6-3).
Table 6-3: M7200 Alert Tones
NAME TONE DESCRIPTION
Call Queued one low tone/two high tones Call queued for processing
Call Denied three short Radio is out of coverage area or requested talk group is
active.
Grant (or Go-Ahead) single short beep Sounded when resources become available for a call
request placed in the queue (if enabled) upon channel
access
Call Removed single long low-pitched tone Notifies the user access to the channel has been lost
(out of coverage area or pre-empted by higher-priority
call)
Selective Alert
Received four short tones Only played once to indicate a selective alert has been
receive
Emergency Alert Tone three (3) short beeps Sounds when an emergency alert is declared
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