Specifications

42 MT-550
• Push the SELECT/ENT knob or press the
CALL
key. The directory list
appears in the display.
• Use the SELECT/ENT knob to select the desired vessel name.
Note: The MMSID’s for each entry do not appear in the list.
• Press the
CALL
key. The INDIVIDUAL call screen appears in the display.
INT
INDIVIDUAL
vessel name
>ROUTINE
PRESS CALL.
Individual Call Screen
• Use the SELECT/ENT knob to select REQ POS.
INT
INDIVIDUAL
vessel name
>REQ POS
PRESS CALL.
Position Request Screen
• Press the
CALL
key to send the call. Call is made on channel 70. If you
observe the display closely, you will see the channel number change to
channel 70 momentarily and then revert to the previous working channel.
• While waiting for the reply from the called vessel, WAITING . . . . appears in
the lower line of the display.
INT
INDIVIDUAL
vessel name
REQ POS
WAITING....
Waiting For the reply
• When the called vessel reply to your call, an alert sounds and RECEIVED
POSITION appears in the display.
INT
09:30 UTC +
vessel name
RECEIVED
05 POSITION
Position Received
• Push the SELECT/ENT knob to see the received Lat/Lon position.
7.5 Receiving DSC Calls
Your MT-550 can receive four 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 receives the following priorities: Distress ACK, Distress Relay,
Urgency, and Safety.