MT-550
35
7.4 Normal DSC Calls
Your
MT-550
can transmit the types of DSC calls; Distress, All Ship’s, Individual,
and Group. Except for Distress, each call type is subdivided into one or more
priorities.
All Ship’s type transmits two priorities:
Urgency and Safety.
Individual type transmits one priority:
Routine.
Group type transmits one priority:
Routine.
Also
MT-550
can transmit the calls of advanced Individual Routine priority;
Position Send, and Position Request. Lat/Lon position from another vessel can be
transferred to the DSC equipped chart plotter, if it is connected.
A normal DSC call may be originated from your vessel to another DSC equipped
vessel or to a coast station, or you may reply to a DSC call sent by another vessel or
a coast station. Outgoing calls are made either by selecting a vessel or station
name from your directory or by manually entering the vessel or station MMSID
number (Position Send and Position Request are made from your directory only).
Replies to any incoming call type can be made directly from the call log. The call
log (LAST CALL) holds thirty two entries and the last call received is on top of the list.
If the call log is full, the oldest entry is lost.
Individual DSC Call
Individual calls can be made to another vessel or to a coast station. It is important
to be able to differentiate between the two. When calling another vessel, the
communication channel is specified in the call by the calling vessel. If
communicating with a coast station, it is the coast station in its acknowledgment,
that determines the channel. Your
MT-550
transceiver transmits Routine
individual calls, but receives both Routine and Safety individual calls.
- Directory Call
Directory calls are made by selecting a vessel or station name from the calling
directory. The calling directory holds thirty two of your previously entered names
that you routinely contact during normal boating activities.
To make a directory call:
•
Press the
CALL
key. The DSC calling menu appears in the display with the
cursor indicating
INDIVIDUAL
topic.
INT
>INDIVIDUAL
GROUP
ALL SHIP'S
RECEIVED
DSC Individual
•
Push the
SELECT/ENT
knob or press the
CALL
key. The
INDIVIDUAL
menu appears in the display.
•
Use the
SELECT/ENT
knob to select the
DIRECTORY
topic.
