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3
APCO P25 MODE OPERATION
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n
Emergency transmission
The P25 emergency mode can be accessed by pushng the
[Emergency]
key. An Emergency alarm s automatcally
transmtted once, or repeatedly*
1
, to the dspatcher (Trunkng
mode) or Talkgroup (Conventonal mode).
Moreover, whle n the emergency mode, Emergency calls
can be transmtted wth
[PTT]
to a Talkgroup.
If your transcever s programmed for Slent operaton, you
can transmt Emergency alarms and Emergency calls wthout
the beep soundng or the LCD dsplay lghtng.
[Emergency]
key assgnment s necessary to transmt the
Emergency alarm.
NOTES:
• When the Auto TX functon s pre-set, the transcever
automatcally transmts the mcrophone audo for the
specfied tme perod*
2
after the emergency alarm trans-
msson, even f the emergency repeat cycle s set to ‘1.’
Ask your dealer for detals.
- An HM-148G or HM-152
hand
microphone
s requred for the
moble transcevers.
• When the Auto RX functon s pre-set, the transcever
stands-by n the audble mode, for the specfied tme pe-
rod*
2
, after the emergency alarm transmsson.
*
1
Dependng on the emergency repeat cycle settng.
*
2
Dependng on the pre-settng. Ask your dealer for detals.
D
Transmitting an Emergency alarm
q
Push and hold
[Emergency]
for the specfied tme perod*
2
to enter the emergency mode.
• The countdown starts mmedately.
w
After the specfied tme perod*
2
has passed, the trans-
cever automatcally transmts an Emergency alarm once,
or repeatedly, to nform the dspatcher that the transcever
s n the emergency condton.
• To ext the emergency mode, push and hold
[Emergency]
be-
fore transmttng an Emergency alarm.
• When the emergency repeat cycle s set to ‘1,’ the transcever
transmts an Emergency alarm, exts the emergency mode and
returns to normal operaton.
• After recevng an acknowledgement, “
ACK RECEIVED
” s ds-
played (Smple and 10-key types only), and dependng on the
pre-settng, the transcever exts the emergency mode.
• When an acknowledgement s not receved, “
NO ACKNOWLDG
”
s dsplayed. (Smple and 10-key types only) And dependng on
the pre-settng, the transcever automatcally transmts the mcro-
phone audo (Auto TX).
e
To ext the emergency mode, turn the power OFF.