NorthStar Navigation Explorer 721EU, Explorer 721US Wx01 RX Only 162.550, Wx02 RX Only 162.400

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WEATHER		MHz	TRAFFIC TYPE			NAME TAG
Wx01	RX Only	162.550	NOAA WEATHER CHANNEL	------	------	NOAA WX
Wx02	RX Only	162.400	NOAA WEATHER CHANNEL	------	------	NOAA WX
Wx03	RX Only	162.475	NOAA WEATHER CHANNEL	------	------	NOAA WX
Wx04	RX Only	162.425	NOAA WEATHER CHANNEL	------	------	NOAA WX
Wx05	RX Only	162.450	NOAA WEATHER CHANNEL	------	------	NOAA WX
Wx06	RX Only	162.500	NOAA WEATHER CHANNEL	------	------	NOAA WX
Wx07	RX Only	162.525	NOAA WEATHER CHANNEL	------	------	NOAA WX
Wx08	RX Only	161.650	CANADIAN WEATHER CHANNEL	------	------	CANADA WX
Wx09	RX Only	161.775	CANADIAN WEATHER CHANNEL	------	------	CANADA WX
Wx10	RX Only	163.275	NOAA WEATHER CHANNEL	------	------	NOAA WX

SPECIAL NOTES ON USA CHANNEL USAGE

1.LOW POWER (1 W) only.

2.Receive Only.

3.LOW POWER (1 W) initially. Override to HIGH POWER by holding down H/L key before transmitting. Used normally in bridge-to-bridge communications.

4.Lightly Shaded Simplex channels 03A, 21A, 23A, 61A, 64A, 81A, 82A, and 83A cannot be lawfully used in U.S. waters unless special authorization is obtained from the U.S. Coast Guard. Not for use by the general public.

5.The letter“A”illuminated by the channel number indicates the USA channel is simplex. This same channel is always duplex when selecting International. There is no “A” reference for International channels. The letter “B” is only used for some Canadian “Receive Only” channels.

6.Channel 70 is designated for use exclusively for Digital Selective Calling (DSC), such as Distress, Safety, and Ship Calls. No voice communication is allowed on CH70.

Northstar Explorer VHF Series: 721US, 721EU Operation and Installation Manual

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Contents Explorer 721US / 721EU Important Safety Information Contents Send and Receive DSC Calls Industry Canada Customize your Northstar VHF Radio FeaturesHow to Display and Navigate Menus General InformationNormal Menu Mode Edit Mode Push Space How to Enter or Change Alphanumeric DataLCD Symbols and Meanings Symbol How the Microphone and Optional Handset Work Together Basic Operation and Key Functions Then push to backup CH2 or CH3 symbol disappears oﬀ the LCDWeather alert mode is on Menu see and the DSC set up menu see SectionYou must release PTT to receive a signal Power transmission setting is incorrectComplete listing of channel charts Matically exits you from menu mode and stops scanningRadio Menu Options Menu Show Weather, SNR or Happy Fish on Handset Info Data Edit an Entry Maintain Your Buddy List Buddy ListAdd an Entry Backlighting Backlight and Contrast Contrast Local or Distance Sensitivity LOCAL/DISTSet Distance Sensitivity Set Local SensitivityManually Enter Position and UTC Time Manual Set the Backlighting LevelSet the Contrast Level GPS Data and Time GPS/DATATime Offset GPS/DATA Manual SettingLocal Time Time Offset Course & Speed Display Options COG/SOG Select GPS/DATA, then Setting Select LL DisplayTime Display Options Time Display Position Display Options LL displaySelect GPS SIM, then select on or OFF as desired Reset to Factory Defaults ResetGPS Alert Options Alert GPS Simulator GPS SIMSelect the Channel Bank UIC Radio Setup Menu Radio SetupRadio Setup Menu Options Radio Setup Internal Speaker Connections INT Speaker Ring and Beep Volume Ring Volume and KEY BeepChange Channel Names CH Name Nmea or Navbus protocol COM Port Set the Priority Channel Watch ModeSelect Radio SETUP, then WX Alert Weather Alert WX AlertBarometric Displays Baro Sensor Select Radio SETUP, then COM Port Select Baro & TempCalibrate the Temperature Reading CAL Switch the Barometric Display on or OFF Baro DisplyTemperature Display Temperature Set the Temperature Units UnitsCreate a Group Group Setup DSC Setup MenuDSC Setup Menu Options Maintain Your Groups Group SetupResponse to Individual Calls Indiv Reply Edit Group Name or Group MmsidEnter or Edit Your Atis Mmsid Enable Atis Functionality Atis FuncAtis Mmsid & Atis Functionality Push the rotary knob to conﬁrm Select DSC SETUP, then LL ReplyDSC Functionality DSC Func Response Type to LL Polling Calls LL ReplyDSC Call Menu Options What is DSC?Send and Receive DSC Calls Acknowledge an Individual Incoming Call Distress only when there’s a distress situationCall an Individual Individual Retry a Routine CallThis facility is useful and used frequently Call the Most Recent Caller Last CallCall a Group Group Call All Ships ALL ShipsSet the channel and continue as explained in Section Call using the Call Log Call LOGCall using the Distress Log Dist LOG SET Buddy BUDDY1 On OFF Request the LL Position of a Buddy LL RequestTrack Your Buddy Track Buddy DSC Call Call LOG Dist LOG LL RequestReceive an Individual Call RCV Indiv Receive an All Ships Call RCV ALL ShipReceive a Polled Position Call Rcvposition Receive a Group Call RCV GroupReceive a Geographic Call RCV Geograph Open the red cover labelled Distress Distress CallsSend a Distress Call Receive a Distress Acknowledgement Distress ACKRelay a Distress Call from the Distress Log Relay Receive a Distress Call RCV DistressReceive a Distress Relay RCV Distress Relay Rotary channel selector Yes Appendix a Technical SpecificationsNorthstar Explorer 721US and 721EU GPS/NMEA input Yes Comm. port Baud NMEA, 38400 baud NavbusTransmitter Channel Naming YesAppendix B Troubleshooting International EU-DSC on Appendix C VHF Marine Channel ChartsSpecial Notes on International Channel Useage Page USA Channel Chart Send Receive Traffic Type Ship Name TAG Wx04 RX Only 162.425 Wx01 RX Only 162.550Wx02 RX Only 162.400 Wx03 RX Only 162.475Canada Channel Chart 156.225 160.825 Public Correspondence, Duplex Yes 28B RX Only 162.000 Public Correspondence, RX Only156.025 160.625 Public Correspondence, Duplex Yes 62A 156.125 Canadian Coast Guard YesWeather Digital selective calling for distress EU Inland Waterway Channels Country SpecificAIS 156.85162 Page Appendix D Mmsid and License Information There are two ways to install the radio. You can choose Install the ExplorerInstallation Options ChecklistGimbal Installation Change the Viewing Angle Recessed InstallationConnect the Radio Cables Install the Microphone Bulkhead MountDrill the two pilot screw holes where marked Connectors are on the rear of the base unit, as followsGND. a ground connection is not usually required Set Up the RadioMmsid Store Cancel User Mmsid Input Again Enter Your User MmsidCompleted Installation with Optional Handset 0560