Call The Most Recent Caller (Last Call); Call A Group (Group); Call All Ships (All Ships) - NorthStar EXPLORER 721EU Operation And Installation Manual

5-2-2 Acknowledge an Individual Incoming Call
RCV: INDIV
523456789
ROUTINE
ENT –> ACK
The Explorer 721/725 EU requires the operator to manually send an acknowledgement to the requesting
radio. Press ENT or push the rotary knob to send an acknowledgement or press ESC to cancel.
The Explorer 721/725 US automatically sends an acknowledgement to the requesting radio within 10 seconds
of receiving the call.

5-3 Call the Most Recent Caller (LAST CALL)

DSC CALL
INDIVIDUAL
> LAST CALL
GROUP
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 confirmation to send the call (SEND?). Press ENT or
push the rotary knob to send the call, and continue as explained in Section 5-3.

5-4 Call a Group (GROUP)

DSC CALL
INDIVIDUAL
LAST CALL
> 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 MMSI must be set before making the call). Then set
the channel and continue as explained in Section 5-3.

5-5 Call All Ships (ALL SHIPS)

DSC CALL
LAST CALL
GROUP
> ALL SHIPS
1. Press CALL MENU to enter the DSC CALL menu, then select ALL SHIPS.
34
13 CHANNEL
REQUEST
Alternating
ESC –> EXIT
EXPLORER 721
INDIVIDUAL
ROUTINE
10:22 UTC
GROUP
> RD GROUP
GROUP #2
GROUP#3
ALL SHIPS
> URGENCY
SAFETY
ROUTINE
Northstar Explorer VHF Series: 721/725 Operation and Installation Manual
EXPLORER 721
INDIVIDUAL
ROUTINE
> SET CHANNEL
RD GROUP
055554444
ROUTINE
> SET CHANNEL
EXPLORER 721
INDIVIDUAL
ROUTINE
> SEND?
RD GROUP
055554444
ROUTINE
> SEND?