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This manual describes the operation and installation procedures for the Northstar Explorer 721/725US and 721/725EU base unit and microphone . An optional Northstar 701/705US or 701/705EU handset can be purchased and installed to provide second station operation and intercom facilities .
Section 1 - General Information 1-1 Features Congratulations on your purchase of a Northstar VHF Explorer 721/725US or 721/725EU marine band radio. Both of these models provide the following useful features: • Adjustable contrast settings for the LCD • Adjustable keypad backlighting for easy night-time use •...
On the base station, use the rotary knob to enter alphanumeric data and push to ENTER the data. Normal and Menu Mode Edit Mode Press 1 Press 2 Space Press 3 Press 4 “ Press 5 “ & Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
Shows which of the 3 favorite channels, if any, are selected. Otherwise blank. ATIS Enabled for use in European inland waterways. Otherwise blank. 721/725 EU only . DSC capability is available. A message acknowledging your DSC call is being displayed. Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
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• 3 bars by the Happy Fish indicates rising barometic trends and reasonable fishing conditions. • The weather indicates showery conditions. A typical operational display on the 701/705 Optional Handset LCD: Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
Priority Channel . 721/725EU only . Press to cancel all other modes and to tune into the priority channel, Channel 16, on high power. Press again to return to your original chan- nel. Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
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(701 hadset only.) Escape . Use ESC when navigating menus, to clear incorrect entries, to exit from a menu without saving changes, and to back up to the previous screen. Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
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You must release PTT to receive a signal. If PTT sticks, a built-in timer will automatically shut down a transmission after five minutes and sound the error beeps. This timer is required by FCC regulations. Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
See Section 2-9 . COM PORT BARO SENSOR TEMPERATURE HAPPY FISH Turn the GPS Simulator on/off. GPS SIM See Section 2-7 . RESET (Base unit only) Reset factory settings. See Section 2-8 . Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
Note: If the power supply to the radio is disconnected, the barometer trend will cease and will re-start when power is re-applied. Happy Fish and Weather may not function, or may be inaccurate for several hours after initial power up. Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
6. Press ENT or push the rotary knob to store the changes. The buddy list is displayed again. If more changes are required, repeat Steps 2 through 6. Otherwise, press ESC to exit. Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
The microphone keypad backlighting is either ON or OFF. LOCAL/DIST • The DISTRESS key backlighting can’t be switched off. > BACKLIGHT CONTRAST Use CONTRAST to set the contrast level for the LCD. Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
The vessel’s latitude and longitude are shown on the screen, with the UTC time. After entering your manual LL position, the prefix “M” in the normal GPS screen indicates a manual entry. The manual entries are cancelled if a real GPS position is received. Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
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−14 ‡ − 4 − 7 Compiled by HM Nautical Almanac Office ‡ No Standard Time legally adopted 180° 120°W 90°W 150°E 150°W 60°W 30°W 0° 30°E 60°E 90°E 120°E 180° Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
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Select COG/SOG. TIME DISPLY > ON Select ON or OFF as desired. In this example, LL DISPLY ON has been selected, so the screen shows the > COG/SOG bearing and speed. If COG/SOG is set ON, the time is NOT displayed on the screen (see section 2-6-4). Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
Select RESET. The radio asks for confirmation. MENU SELECT RESET RADIO? Select YES to reset the radio and return to the RADIO SETUP ARE YOU SURE menu. GPS SIM > RESET > NO Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
2. After a few seconds, the handset will display “SEARCH HOST” and no longer be subscribed to the base unit. SIGNAL LOST! SEARCH HOST PLEASE WAIT 3. The handset can be subscribed to another base unit if needed. Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
CH NAME INT’L Select the channel bank to use then press ENT RING VOLUME CANADA or push the rotary knob to confirm the setting and return to the menu. Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
INT SPEAKER Select ON or OFF then press ENT or push the RING VOLUME > ON rotary knob to confirm the setting and return KEY BEEP to the menu. > INT SPEAKER Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
NAVBUS is automatically activated when present, so that data such as barometric pressure and history, temperature, DSC polling positions and distress data are available to any other Northstar instruments using NAVBUS. However, the barometric and temperature readings from the radio can be turned OFF if you prefer to use the readings from a different instrument.
(SUNNY, PARTLY CLOUDY, CLOUDY, RAINY, SNOW). The local air pressure trends combined with the local temperature determines which weather icon is displayed. • a digital readout of air pressure (in mb or in/Hg). • a graphical display of barometric pressure changes over the past consecutive 24 hours. Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
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The barometric functions and icons work best when calibrated to local conditions. The operating range is from 960mb to 1060mb. RADIO SETUP BARO SENSOR WX ALERT BARO UNITS COM PORT BARO DISPLY > ± 0 .00 In-Hg > BARO SENSOR > CAL Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
The Happy Fish Alarm can be turned ON or OFF. RADIO SETUP HAPPY FISH BARO SENSOR > ON TEMPERATURE > HAPPY FISH 1. Select RADIO SETUP, then HAPPY FISH. 2. Select HAPPY FISH OFF to disable all HAPPY FISH Alarms. Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
4-4 Maintain Your Groups (GROUP SETUP) Use GROUP SETUP to create, edit, or delete 1, 2, or 3 groups of frequently called people stored in alphanumeric order. A group MMSI always starts with 0. Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
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Select DSC SETUP, then GROUP SETUP. Select the group that you want to delete. Select DELETE and press ENT or press the rotary knob. The radio asks for confirmation. 4. Press ENT or push the rotary knob to delete the group and return to the GROUP SETUP screen. Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
Press ENT or push the rotary knob to store your ATIS MMSI. Enter your ATIS MMSI again as a password check, then press ENT or push the rotary knob to permanently store the ATIS MMSI and return to the menu. You can view your stored ATIS MMSI at anytime by selecting ATIS MMSI in the main menu. Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
DSC SETUP LL RING Select OFF (off ) to mute the ringtones. DSC FUNC > ON Press ENT to confirm your choice and return to LL REPLY the menu. > LL RING Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
Show the details of the 10 most recent distress calls. See Section 5-2-8 . LL REQUEST Request the LL position of a buddy. See Section 5-2-9 . TRACK BUDDY Operate Track Buddy functions. See Section 5-2-10 . Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
SEND AGAIN? Select YES and press ENT or push the rotary knob to retry the call. If the call > YES still can’t be placed, the radio returns to normal operation. Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
5-5 Call All Ships (ALL SHIPS) DSC CALL ALL SHIPS LAST CALL > URGENCY GROUP SAFETY > ALL SHIPS ROUTINE Press CALL MENU to enter the DSC CALL menu, then select ALL SHIPS. Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
MMSI of the vessel in distress, the second screen shows the nature of the emergency (if specified) and the MMSI of the vessel that relayed the distress call. Select CALL BACK, set the channel and continue as explained in Section 5-3. Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
Use the TRACKLIST option to select the buddy (or buddies) whose position you want to track, specify the time interval through the INTERVAL option and then start the track. Alternatively, if the buddy and time are already set to your preference, just start tracking. Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
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Press any key to acknowledge or wait for the automatic 20 second time out. NOTE: The Explorer 721/725 can receive and display the LL position data at normal or enhanced resolution. Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
The radio manually selects the channel designated in the incoming call by pressing the ENT key. INDIV calls are almost always routine priority. If the radio recognises the user MMSI as one of your buddies, the buddy’s name is displayed in place of the user MMSI. Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
If enhanced LL position information is available from your buddy, it’s shown on the LCD until the display changes. Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
Press PTT to establish voice contact with the Search and Rescue (SAR) authority. The Search and Rescue (SAR) authorities of your country are the only instance allowed to send a Distress Acknowledgement (DISTRESS ACK). Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
(If you selected MANUAL NEW, you need to enter the user MMSI then press ENT or push the rotary knob.) • ALL RELAY to relay the distress call to All Ships then press ENT or push the rotary knob. The radio automatically selects CH16 (for all relay) or manually set the working CH (INDIV RELAY) and displays the details of the distress call on the screen. Press ENT or push the rotary knob to relay the Distress Call. Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
DSC: DSC mode: USCG SC101 721US/725US DSC Class D 721EU/725EU and Canada (Commercial) DSC Class S Canada (Recreational) FEATURES Flush mounting kit: Dust cover: Rotary channel selector: Local/Distant control: Position polling: Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
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Works only with Explorer 725US VHF705EU Works only with Explorer 725EU Power source Built-in 3.7V 750mAH Lithium Ion rechargeable battery Wireless: ISM 2.4GHz FHSS Range: Approximately 150mtrs in ideal conditions Specifications are subject to change without notice. Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
The GPS cable may faulty or the GPS setting may be incorrect. a) Check that the GPS cable is physically connected. b) Check the polarity of the GPS cable. c) Check the baud rate setting of the GPS if applicable. The baud rate setting should be 4800 for NMEA or 38400 for NAVBUS. Parity should be set to NONE. Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
Public Correspondence TELEPHONE 157.300 161.900 Public Correspondence TELEPHONE 157.350 161.950 Public Correspondence TELEPHONE 157.400 162.000 Public Correspondence TELEPHONE 156.025 160.625 Public Correspondence TELEPHONE 61 156 .075 160 .675 Port Operations PORT OPS Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
This channel is only available on DSC enabled radios. Note: The INTERNATIONAL mode is not legal for use in U.S. or Canada waters. KEY: S = Simplex operating channel; D = Duplex operating channel. Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
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UNAUTHORIZED 156.175 156.175 Port Operations, VTS in Selected Areas PORT OPS/VTS 156.225 156.225 U.S. Government, Canadian Commercial UNAUTHORIZED Fishing 156.275 156.275 Port Operations PORT OPS 156.325 156.325 Port Operations PORT OPS Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
Distress, Safety, and Ship Calls. No voice communication is allowed on CH70. This channel is only available on DSC enabled radios. KEY: S = Simplex operating channel; D = Duplex operating channel. Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
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157.350 161.950 Public Correspondence TELEPHONE 157.400 162.000 Public Correspondence TELEPHONE 162.000 Public Correspondence ------ ------ TELEPHONE RX only 156.025 160.625 Public Correspondence TELEPHONE 156.075 156.075 U.S. Government, Canadian Coast Guard Yes UNAUTHORIZED Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
LOW POWER (1 W) initially. Override to HIGH POWER by holding down H/L key before transmitting. Used normally in bridge-to-bridge communications. . Lightly shaded simplex channels 21A, 23A, 61A, 64A, 81A, 82A, and 83A cannot be lawfully used in Canada waters unless special authorization is obtained from the Canadian Coast Guard. Not for use by the general public. Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
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NOAA WX RX only WX08 161.650 CANADIAN Weather Channel CANADA WX RX only WX09 161.775 CANADIAN Weather Channel CANADA WX RX only WX10 163.275 NOAA Weather Channel NOAA WX RX only Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
Digital selective calling for distress, safety and calling 156.55 156.55 156.575 156.575 156.6 156.6 a) r) 156.625 156.625 156.65 156.65 f) g) 156.675 156.675 156.7 156.7 156.725 156.725 156.75 156.75 156.775 156.775 156.8 156.8 Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
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86), Ukraine and the Federal Republic of Yugosla via. The Administra tions concerned should make any possible attempt to make these fre quencies channels as soon as possible available for the radiotelephone service on Inland Waterways and/or the required service catego ry. Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
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In the Czech Republic this channel is used for service category nautical information. In the Czech Republic this channel is used for service category ship-to-port authorities. Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
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The special channels above maybe fitted to your radio. These are only licensed for use in the country indicated. No attempt should be made to use them in any other country. Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
If you don’t have a user MMSI , contact the appropriate authorities in your country. If you’re unsure who to contact, consult your Northstar dealer. The user MMSI is a unique nine digit number, similar to a personal telephone number. It is used on marine transceivers that are capable of using DSC (Digital Select Calling).
+/-20 deg from the front of the display. Note: If unsure, temporarily power up the radio and check for a suitable location. 20˚ 20˚ Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
The following items should be supplied in the box. Check before starting the installation and contact your dealer if an item is missing. NOTE: An antenna is NOT provided . Consult your Northstar dealer for advice if necessary . Mounting gimbal for the VHF radio 14. Two spring washers for the microphone bulk-...
Cut out the area marked by the solid dark line. (The dashed line indicates the total area that will be covered by the radio fascia after installation.) Remove the installation template and slide the radio into the cavity. 4. Working from the rear of the bulkhead, align the racheted outstand on each side of the radio with the central hole in each mounting bracket. Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
NOTE: (Explorer 721US/EU only) This mic clip has a special magnet glued in the rear of the clip to sense ON/OFF HOOK. All other mic hangers do not have magnets and therefore cannot be used. Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
ANT. A radio antenna is not supplied. A suitable radio antenna must be mounted and connected before operating the Explorer 721/725 radio. Consult your dealer for advice if necessary. GND. A ground connection is not usually required.. Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...
7-9 Set Up the Radio IMPORTANT: You can’t make any DSC transmissions until you’ve obtained a user MMSI and entered it into your Explorer 721/725 . See Appendix E for Obtaining and Entering MMSI information. Northstar Explorer VHF Series: 721/725 Operation and Installation Manual...