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32 Northstar Explorer VHF Series: 721US, 721EU Operation and Installation Manual
5-4 Call the Most Recent Caller (LAST CALL)
This facility is useful and used frequently.
1. Press CALL/MENU to enter the DSC CALL menu. LAST CALL is automatically selected. Press ENT or push
the rotary knob to display the contact details of the most recent incoming call.
2. Select the working channel. Duplex channels can’t usually be called and are automatically eliminated
from the suggested call list. If the call is to a Coast Station, the radio will recognize this and select the
correct channel.
3. The radio summarizes the call details and asks for confi rmation to send the call (SEND?). Press ENT or
push the rotary knob to send the call, and continue as explained in Section 5-3.
5-5 Call a Group (GROUP)
1. Press CALL/MENU to enter the DSC CALL menu, then select GROUP. The radio displays the names of
your groups.
2. Select the group that you want to call (the Group MMSID must be set before making the call). Then set
the channel and continue as explained in Section 5-3.
5-6 Call All Ships (ALL SHIPS)
1. Press CALL MENU to enter the DSC CALL menu, then select ALL SHIPS.
2. The priority is set automatically to URGENCY. but you can change the priority level of the DSC call to
routine, safety, urgency, or distress. Choose:
•
URGENCY only when there’s a serious situation or problem that could lead to a distress situation
• SAFETY to send safety information to all other vessels in range
• ROUTINE to make a routine call to all vessels (721US only)
• DISTRESS only when there’s a distress situation
3. Select the working channel and press ENT or press the rotary knob. (NOTE: If you’re making a distress
call, the radio goes to CH16 automatically.) Duplex channels can’t usually be called and are automatically
eliminated from the suggested call list. If the call is to a Coast Station, the radio will recognize this and
DSC CALL
INDIVIDUAL
> LAST CALL
GROUP
EXPLORER 721
INDIVIDUAL
ROUTINE
10:22AM LOC
EXPLORER 721
INDIVIDUAL
ROUTINE
> SEND?
EXPLORER 721
INDIVIDUAL
ROUTINE
> SET CHANNEL
DSC CALL
INDIVIDUAL
LAST CALL
> GROUP
SELECT GROUP
> RD GROUP
GROUP #2
GROUP#3
EXPLORER 721
INDIVIDUAL
ROUTINE
> SEND?
RD GROUP
055554444
ROUTINE
> SET CHANNEL
DSC CALL
LAST CALL
GROUP
> ALL SHIPS
ALL SHIPS
> URGENCY
SAFETY
ROUTINE
ALL SHIPS
URGENCY
> YES
NO