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6 Northstar Explorer VHF Series: 721US, 721EU Operation and Installation Manual
Section 1 - General Information
1-1 Features
Congratulations on your purchase of a Northstar VHF Explorer 721US or 721EU marine band radio. Both
of these models provide the following useful features:
• Prominent channel display and rotary channel selector knob with PRESS TO ENTER function
• Local/Distance mode to eliminate noise in high traffic areas
• Adjustable contrast settings for the LCD
• Adjustable keypad backlighting for easy night-time use
• Waterproof and submersible to comply with JIS-7
• GPS latitude and longitude (LL) and time display (when connected to a GPS)
• Info key to display barometric data and temperature, or Signal-to-Noise Ratio (SNR)
• Happy Fish symbol that indicates the fishing conditions
• Choice of High or Low (25 W or 1 W) transmission power
• Top centered PTT button for comfortable left- or right-handed use
• Powerful 4 W external audio output
• Access to all currently-available marine VHF channel banks (USA, Canada, International) including
weather channels where available
• Special CH16 or CH16/9 key for quick access to the priority (international distress) channel
• Special 3CH key to select your three favorite channels
• PSCAN (similar to dual watch) facility
• DSC (Digital Select Calling) capability that meets USCG SC101 for USA, Class D Standards for
EU/Canada Commercial, and Recreational Class S for Canada
• Distress call key to automatically transmit the MMSID and position until an acknowledgement is
received
• Easy access to a buddy list of up to 20 favorite people
• MMSID storage for three favorite groups
• Group call and All Ships call facility
• LL position polling information and Track Your Buddy facility
• Weather alert facility. 721US only
• ATIS facility for inland waterways. 721EU only
• Alphanumeric microphone for easy, direct channel entry and information editing. 721EU only
• Useful INTERCOM facility if the optional 701US or 701EU handset is installed.
1-2 Customize your Northstar VHF Radio
You can customize the radio to suit your individual preferences. Some preferences can be set directly through
the keys as explained in this section.
Other preferences are set up through the built-in menus and these are explained in the other sections.
1-3 How to Display and Navigate Menus
1. Hold down CALL/MENU to show the radio menu
or
Press CALL/MENU to show the DSC call menu.