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4. DSC DISTRESS OPERATIONS
4-2
When the countdown shows 0S, the distress alert is sent. The audio alarm sounds
for two seconds and the message "Sending DISTRESS ALERT." appears. The
screen shows the contents of the distress alert call. The DISTRESS key lights in
red and only the icon for DISTRESS transmission ( ) is displayed in the tab ar-
ea.
After the distress alert has been sent, the screen changes as below. Wait to re-
ceive the distress acknowledge call from a coast station. The elapsed time since
transmission is displayed. At this time, the icons for other DSC received messag-
es except the distress alert acknowledge call are not displayed. You can only con-
firm them in the log.
Note: If you do not receive the distress alert acknowledge call, the equipment au-
tomatically re-transmits the distress alert after 3 min 30 seconds to 4 min 30 sec-
onds. Then awaits the distress alert acknowledge call. This is repeated until the
distress alert is acknowledged.
You can temporarily stop the countdown for next retransmission by selecting
[PAUSE] in the user options area. [PAUSE] indication changes to [START] and
[PAUSE] is displayed instead of the countdown indication. To restart, select
[START]. The countdown restarts and [START] indication in the user options area
changes to [PAUSE].
Also, you can re-send the distress alert manually by pressing the DISTRESS key
for four seconds.
When the distress acknowledge call is received, the audio alarm sounds, the LED
flashes in red, and the icon for DISTRESS transmission ( ) appears. The
screen changes as below.
Elapsed time
since distress
alert transmission
User options area
PRINT
TX 2182 . 0 / RX 2182 . 00 kHz
09
°
12.1234’ N/ 123
°
45.1234’ E / 12 : 34
Tab area
CHANGE
[ WAIT FOR ACK ]
2, 4, 6, 8, 12, 16
MH
z
E
/
12:34