Receiving Drobose Calls - JRC JSS-2250 Instruction Manual

4 . 5 . 4 . 3

Receiving drobose calls

4 . 5 . 4 . 3
When receiving a drobose call directed to ships in a specified area, the ship stations (inc. your
own ship) are allowed to acknowledge only by the radiotelephone. (Receiving a distress relay call
from a coast station is the same.)
■ ■
Procedure
1 1 . .
1 .
When a DSC drobose call is received,
the screen at right is displayed.
The ALM lamp starts blinking, and the call
alarm gradually grows louder. However, the
aural alarm keeps silence in cases below;
the distress position is not within 500nm and is
-
not in the polar areas (greater than 70°N/S), or
- duplicate area calls are received within 1 hour.
The example message contains the
following information.
- Message type:
- Call area:
Caller's MMSI:
-
Ship in distress MMSI:
-
- Nature of distress:
- Position & time*:
- Communication mode*: Radiotelephone
Sequence process*:
-
- Reception frequency*:
* Scroll to view
2 2 . .
2 .
Press the CANCEL
the alarm, and the screen at right is
displayed.
Turn the jog dial to scroll the received
message. When the last line of the message
is reached the cursor moves to Accept.
3 3 . .
3 .
Press ENT while Accept is selected to
set the radiotelephone mode's
distress/safety frequency to the band the
distress message was received on. The
status display is displayed to watch the
distress communications.
Keep watch for at least 5 minutes. Notify the
coast station as appropriate.
Distress relay area call
North latitude
80 to 90 degrees
East longitude
170 to 180 degrees
431000123
431022222
Man overboard
North latitude
East longitude
23:57
End of sequence
4207.5 kHz
key or ENT to stop
I D 4 3 1 0 0 1 2 3 4
P o s 8 9 ﾟ 5 9 . 0 1 2 3 ' N
1 7 9 ﾟ 5 9 . 6 7 8 9 ' E @ 2 3 : 5 9
T E L R x : 4 1 0 0 . 0 / T x : 4 1 0 0 . 0 k H z
R e c e i v e d d i s t r e s s m e s s a g e
T y p e
T o
F r o m
D i s t - I D
N a t u r e
P o s i t i o n
P r e s s C A N C E L t o s i l e n c e a l a r m .
90° 00.0000'
180° 00.0000'
I D 4 3 1 0 0 1 2 3 4
P o s 8 9 ﾟ 5 9 . 0 1 2 3 ' N
1 7 9 ﾟ 5 9 . 6 7 8 9 ' E @ 2 3 : 5 9
TEL
RX
TX
S I G
W K R s c a n b a n d s :
2 4 6 8 1 2 1 6 ( M H z )
Operation
T I M E 2 3 : 5 9 ( U T C )
( E X T )
: D i s t r e s s r e l a y G E O
: 8 0 ﾟ N - 9 0 ﾟ N /
1 7 0 ﾟ E - 1 8 0 ﾟ E
: 4 3 1 0 0 0 1 2 3
: 4 3 1 0 2 2 2 2 2
: M a n o v e r b o a r d
: 9 0 ﾟ 0 0 . 0 0 0 0 ' N
1 8 0 ﾟ 0 0 . 0 0 0 0 ' E
T I M E 2 3 : 5 9 ( U T C )
( E X T )
4125.0
kHz
4125.0
kHz
4-73