NorthStar Navigation Explorer 721EU, Explorer 721US Appendix a Technical Specifications

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Appendix A - Technical Specifications

Northstar Explorer 721US and 721EU

GENERAL

 

Power Supply:

13.6 V DC.

Current drain: Transmit

6 A at 25 W Tx / 1.5 A at 1 W Tx

Current drain: Receive

Less than 250 mA in standby

Baro sampling (radio off ):

Less than 3 mA, 85 mA in active standby

Useable channels:

International, USA, Canada, Weather (country specific)

Mode:

16K0G3E (FM) / 16K0G2B (DSC)

Handset

Works only with optional Explorer 701US or optional Explorer 701EU

PHYSICAL

 

LCD display (viewing):

40 (H) x 48 (W) mm

 

FSTN 4 x 12 character

Contrast control:

Yes

Backlight control:

Yes

Antenna connector:

SO-239 (50 ohm)

Temperature Range:

-15ºC to +50ºC

Waterproof:

JIS-7

Dimensions:

161 (W) x 75 (H) x 147 (D) mm - without bracket

Weight:

3.0 lbs (1.36 kg) without microphone

Frequency stability:

+/- 10ppm

Frequency control:

PLL

GPS/NMEA input:

Yes

Comm. port:

4800 baud NMEA, 38400 baud NAVBUS

DSC:

Yes

Rotary channel selector:

Yes

FEATURES

 

Flush mounting kit:

Yes

Dust cover:

Yes

Local/Distant control:

Yes

Position polling:

Yes

Track Your Buddy:

Yes

Group Call:

Yes

Call logs:

Yes - 20 individual and 10 distress

DSC USCG SC101:

721US

DSC Recreational Class S:

Canada

DSC Class D:

721EU and Canada Commercial

Barometer, Temperature

 

and Happy Fish:

Yes

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 InformationHow to Enter or Change Alphanumeric Data LCD Symbols and MeaningsNormal Menu Mode Edit Mode Push Space 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 Maintain Your Buddy List Buddy List Add an EntryEdit 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/DATAGPS/DATA Manual Setting Local Time Time OffsetTime 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 SIMRadio Setup Menu Radio Setup Radio Setup Menu Options Radio SetupSelect the Channel Bank UIC Ring and Beep Volume Ring Volume and KEY Beep Change Channel Names CH NameInternal Speaker Connections INT Speaker 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 MmsidEnable Atis Functionality Atis Func Atis Mmsid & Atis FunctionalityEnter or Edit Your Atis Mmsid Push the rotary knob to confirm Select DSC SETUP, then LL ReplyDSC Functionality DSC Func Response Type to LL Polling Calls LL ReplyWhat is DSC? Send and Receive DSC CallsDSC Call Menu Options 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 ShipsCall using the Call Log Call LOG Call using the Distress Log Dist LOGSet the channel and continue as explained in Section 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 Group Call RCV Group Receive a Geographic Call RCV GeographReceive a Polled Position Call Rcvposition Open the red cover labelled Distress Distress CallsSend a Distress Call Receive a Distress Acknowledgement Distress ACKReceive a Distress Call RCV Distress Receive a Distress Relay RCV Distress RelayRelay a Distress Call from the Distress Log 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 Specific156.85 162AIS 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
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