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3-2
2. The display changes as below. It takes about 40 seconds to complete transmission of the
distress alert, and the number of seconds until transmission is completed is shown at the
bottom of the display.
At this time the output power of the radiotelephone is automatically set to maximum.
Distress
call in progress!
TIME TO GO : 38S
NATURE: UNDESIGNATED
POS:
12˚34N 123˚45E AT 12:34
TELEPHONE
2182.0 KHZ
DSC FREQ
:
2187.5 KHZ
Time to go until distress
alert transmission is completed.
3. After the distress alert has been sent the display changes as below. This is where the
equipment waits to receive the distress acknowledge message from a coast station, which
usually takes about one minute to three minutes. (The [DISTRESS] button remains lit until
the DSC-60 receives the distress acknowledge message from a coast station.) The timer
counts down the number of minutes to wait, from 3.5 to 4.5 minutes, randomly set.
At this time the DSC-60 cannot receive any messages except the distress alert acknowledge
message. Distress message is recorded in the Tx log.
Wait for distress
acknowledgement.
TIME TO GO: 3M10S
NATURE: UNDESIGNATED
POS :
12˚34N 123˚45E AT 12:34
TELEPHONE
2182.0 KHZ
DSC FREQ :
2187.5 KHZ
4. When the distress acknowledge call is received the audio alarm sounds and the display
changes as below.
SHIP IN DIST:
123456789
POS:
12˚34N 123˚45E AT 12:34
TELEPHONE
2182.0 KHZ
FROM COAST:
001234567
NATURE: UNDESIGNATED
Distress acknowledge
call received.
STOP ALARM
Note:
If you do not receive the distress alert acknowledge call, the DSC-60 re-transmits the
distress alert and then awaits the distress alert acknowledge call. This is repeated until the
distress alert is acknowledged.