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The distressed vessel's MMSID and RELAY call type appear on the second
page.
Your vessel does not re-send a distress relay message.
7.4 Normal DSC Calls
Your MT-500 can transmit the types of DSC calls; Distress, All Ship's, Indi-
vidual, 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-500 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 ves-
sel. If communicating with a coast station, it is the coast station in its ac-
knowledgment, that determines the channel. Your MT-500 transceiver trans-
mits 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
key. The DSC calling menu appears in the display.
CALL
MT-500
39
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