User's Manual
Table Of Contents
- Section 1 - General Information
- Section 2 - The Radio Menu (MENU)
- 2-1 The Radio Menu Options (MENU)
- 2-2 Show Weather, SNR or Happy Fish on Handset (INFO DATA)
- 2-3 Maintain Your Buddy List (BUDDY LIST)
- 2-4 Local or Distance Sensitivity (LOCAL/DIST)
- 2-5 Backlighting (BACKLIGHT) and Contrast (CONTRAST)
- 2-6 GPS Data and Time (GPS/DATA)
- 2-7 GPS Simulator (GPS SIM)
- 2-8 Reset to Factory Defaults (RESET)
- 2-9 Subscribe or Un-Subscribe the 705 handset (HS SETTING)
- Section 3 - Radio Setup Menu (RADIO SETUP)
- 3-1 The Radio Setup Menu Options (RADIO SETUP)
- 3-2 Select the Channel Bank (UIC) (US only)
- 3-3 Change Channel Names (CH NAME)
- 3-4 Ring and Beep Volume (RING VOLUME and KEY BEEP)
- 3-5 Internal Speaker Connections (INT SPEAKER)
- 3-6 Set the Priority Channel (WATCH MODE)
- 3-7 Weather Alert (WX ALERT) (US only)
- 3-8 NMEA or NAVBUS protocol (COM PORT) (721 / 725 only)
- 3-9 Barometric Displays (BARO SENSOR)
- 3-10 Temperature Display (TEMPERATURE)
- 3-11 HAPPY FISH Alarm ON or OFF
- Section 4 - DSC SETUP Menu
- 4-1 What is DSC?
- 4-2 DSC SETUP Menu Options
- 4-3 Check Your User MMSI (USER MMSI)
- 4-4 Maintain Your Groups (GROUP SETUP)
- 4-5 Response to Individual Calls (INDIV REPLY) (US only)
- 4-6 ATIS MMSI & ATIS Functionality (EU only)
- 4-7 DSC Functionality (DSC FUNC)
- 4-8 Response Type to LL Polling Calls (LL REPLY)
- 4-9 Mute the Notification Ringtone
- Section 5 - Send and Receive DSC Calls
- 5-1 The DSC CALL Menu Options
- 5-2 Call an Individual (INDIVIDUAL)
- 5-3 Call the Most Recent Caller (LAST CALL)
- 5-4 Call a Group (GROUP)
- 5-5 Call All Ships (ALL SHIPS)
- 5-6 Call using the Call Log (CALL LOG)
- 5-7 Call using the Distress Log (DIST LOG)
- 5-8 Request the LL Position of a Buddy (LL REQUEST)
- 5-9 Track Your Buddy (TRACK BUDDY)
- 5-10 Receive an All Ships Call (RCV: ALL SHIP)
- 5-11 Receive an Individual Call (RCV: INDIV)
- 5-12 Receive a Group Call (RCV: GROUP)
- 5-13 Receive a Geographic Call (RCV: GEOGRAPH)
- 5-14 Receive a Polled Position Call (RCV:POSITION)
- Section 6 - Distress Calls
- Appendix A - Technical Specifications
- Appendix B - Troubleshooting
- Appendix C - VHF Marine Channel Charts
- Appendix D - EU Inland Waterway Channels
- Appendix E - MMSI and License Information
- Section 7 - Install the Explorer 721/725
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Northstar Explorer VHF Series: 721/725 Operation and Installation Manual Northstar Explorer VHF Series: 721/725 Operation and Installation Manual
5-2-2 Acknowledge an Individual Incoming Call
Alternating
RCV: INDIV
523456789
ROUTINE
ENT –> ACK
13 CHANNEL
REQUEST
ESC –> EXIT
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
EXPLORER 721
INDIVIDUAL
ROUTINE
10:22 UTC
EXPLORER 721
INDIVIDUAL
ROUTINE
> SEND?
EXPLORER 721
INDIVIDUAL
ROUTINE
> SET CHANNEL
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
GROUP
> RD GROUP
GROUP #2
GROUP#3
RD GROUP
055554444
ROUTINE
> SEND?
RD GROUP
055554444
ROUTINE
> SET CHANNEL
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
ALL SHIPS
> URGENCY
SAFETY
ROUTINE
1. Press CALL MENU to enter the DSC CALL menu, then select ALL SHIPS.