NorthStar Navigation VHF Marine Radio Explorer 721US - Manual (Page 23)

23 Northstar Explorer VHF Series: 721US, 721EU Operation and Installation Manual
3-6 Set the Priority Channel (WATCH MODE)
If you have the 721EU, watch mode is similar to a dual watch, scanning between the priority channel and the
working channel. CH16 is the priority channel.
If you have the 721US and are operating on USA or Canadian channel banks, you can set the priority channel
to cover both CH16 and CH09 as well as the working channel, as follows:
1. Select RADIO SETUP, then WATCH MODE.
2. Select ONLY 16CH for dual watch mode, or
16CH+9CH for tri watch mode.
3-7 Weather Alert (WX ALERT)
721US only.
The NOAA provides several weather forecast channels on USA and Canadian channel banks. If severe weather
such as storms or hurricanes are forecast, the NOAA broadcasts a weather alert on 1050 Hz. You can set up
the radio to pick up weather alerts, as follows:
1. Select RADIO SETUP, then WX ALERT.
2. Select ON then press ENT or push the rotary
knob to confi rm the setting and return to the
menu. (If you select OFF, the alarm won’t sound
when there’s a weather alert.)
3. When a weather alert is broadcast, the alarm
will sound. Press any key to hear the weather
alert voice message.
3-8 NMEA or NAVBUS protocol (COM PORT)
You can add the radio to a group of instruments using NMEA or NAVBUS protocol.
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 diff erent instrument.
Select your GPS data source to come from either NMEA or NAVBUS as follows:
3-8-1 NMEA GPS data source (GPS SOURCE)
1. Select RADIO SETUP, then COM PORT.
2. Select GPS source, then select NMEA.
3. The cursor is at ON. Press ENT or push the
rotary knob to confi rm the setting and show
the CHECKSUM option.
4. CHECKSUM ON is the usual setting. The cursor is at ON. Press ENT or push the rotary knob to confi rm
the setting and return to the menu.
NMEA
CHECKSUM
> ON
OFF
RADIO SETUP
WATCH MODE
WX ALERT
> COM PORT
GPS SOURCE
NMEA
> ON
OFF
GPS SOURCE
> NMEA
NAVBUS
COM PORT
NMEA
> GPS SOURCE
BARO & TEMP
RADIO SETUP
INT SPEAKER
WATCH MODE
> WX ALERT
WX ALERT
ON
> OFF
RADIO SETUP
KEY BEEP
INT SPEAKER
> WATCH MODE
WATCH MODE
> ONLY 16CH
16CH+9CH