Chapter 5: Digital Selective Calling (DSC)
91
To accept an All Ships Urgency or Distress Call when Auto Channel
Change is ON
Press the OK soft key or the
CH/OK
knob. The alert tone is muted, the envelope
icon disappears and the radio automatically switches to channel 16. Press
PTT
to
communicate.
If the caller requests that you change to an unsupported working channel the
message INVALID CHANNEL appears on the LCD. If an acknowledgement is sent,
the originating station is sent the message UNABLE TO COMPLY, indicating that
your radio could not make the requested channel change.
5.7 Position Request
With this option you can request GPS position information from any station
capable of responding to this type of call and for which an MMSI number is
known. You can specify the target station either by selecting it from your MMSI
phonebook or by manually entering its MMSI number.
Your radio has the capability of forwarding position data from a responding vessel
to your display unit (C Series, E Series, etc.) over the NMEA port so that it can be
displayed on the screen. You can specify which stations will have their position
data information sent to the display unit using the option NMEA Output, which is
described on page 61.
77
SHIP/SHIP
B
ALL SHIPS
URGENCY
CANCEL
FROM:
$MINNOW
I
N
T
OK
77
SHIP/SHIP
B
ALL SHIPS
URGENCY
CANCEL
CH CHANGE
REQUESTED
TO CH16
I
N
T
OK
D9220-1
16
DISTRESS
B
CANCEL
I
N
T
OK
ALL SHIPS
URGENCY
FROM:
$MINNOW
CH HAS BEEN
CHANGED
16
DISTRESS
B
I
N
T
CH72
50 46.1718N
001 17.7189W
AM10:44LOC
CH73
CH77
...with Auto Channel Change OFF
...with Auto Channel Change ON
16
DISTRESS
B
B
CANCEL
I
N
T
OK
ALL SHIPS
URGENCY
FROM:
$MINNOW
CH HAS BEEN
CHANGED