Rotary channel selector Yes | NorthStar Navigation Explorer 721EU

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

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 Information How 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 Section You must release PTT to receive a signal Power transmission setting is incorrectComplete listing of channel charts Matically exits you from menu mode and stops scanning Radio 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 Sensitivity Manually Enter Position and UTC Time Manual Set the Backlighting LevelSet the Contrast Level GPS Data and Time GPS/DATA GPS/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 display Select GPS SIM, then select on or OFF as desired Reset to Factory Defaults ResetGPS Alert Options Alert GPS Simulator GPS SIM Radio 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 Alert Barometric Displays Baro Sensor Select Radio SETUP, then COM Port Select Baro & Temp Calibrate the Temperature Reading CAL Switch the Barometric Display on or OFF Baro DisplyTemperature Display Temperature Set the Temperature Units Units Create a Group Group Setup DSC Setup MenuDSC Setup Menu Options Maintain Your Groups Group Setup Response to Individual Calls Indiv Reply Edit Group Name or Group Mmsid Enable 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 Reply What 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 Call This facility is useful and used frequently Call the Most Recent Caller Last CallCall a Group Group Call All Ships ALL Ships Call 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 Request Receive an Individual Call RCV Indiv Receive an All Ships Call RCV ALL Ship Receive 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 ACK Receive 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 Navbus Transmitter Channel Naming Yes Appendix B Troubleshooting International EU-DSC on Appendix C VHF Marine Channel Charts Special 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 162.475 Canada 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 Yes Weather Digital selective calling for distress EU Inland Waterway Channels Country Specific 156.85 162AIS Page Appendix D Mmsid and License Information There are two ways to install the radio. You can choose Install the ExplorerInstallation Options Checklist Gimbal Installation Change the Viewing Angle Recessed Installation Connect 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 follows GND. a ground connection is not usually required Set Up the RadioMmsid Store Cancel User Mmsid Input Again Enter Your User Mmsid Completed Installation with Optional Handset 0560