Table of Contents
Introduction.....................................................................1
Handset Overview...................................................................... 1
Home Screen.............................................................................. 1
System Status Icons.............................................................. 1
Basic Operation.............................................................. 1
Turning On and Off the Device................................................... 1
Adjusting the Volume.................................................................. 1
Adjusting the Squelch Level....................................................... 1
Selecting the Frequency Band................................................... 2
Selecting a Channel....................................................................2
Transmitting with the Radio........................................................ 2
Scanning and Saving Channels................................................. 2
Scanning All Channels........................................................... 2
Saving a Channel...................................................................2
Removing a Saved Channel.................................................. 2
Scanning Saved Channels.................................................... 2
Monitoring Multiple Channels.................................................2
Selecting a Different Second-Priority Channel........................... 2
Switching to Priority Channels.................................................... 3
Setting the Receiving Sensitivity.................................................3
Switching Between 1 W and 25 W Transmitting Modes............. 3
Bypassing the Low Transmission Power Setting................... 3
Using the Hailer Function........................................................... 3
Foghorn...................................................................................... 3
Sounding the Foghorn Automatically..................................... 3
Sounding the Foghorn Manually............................................ 3
Adjusting the Sound Frequency of the Foghorn.................... 3
Entering Text.............................................................................. 4
NOAA® Weather Broadcasts and Alerts...................... 4
Tuning Weather Broadcasts....................................................... 4
Enabling and Disabling Weather Alerts...................................... 4
Digital Selective Calling................................................. 4
Digital Selective Calling.............................................................. 4
Entering Your MMSI Number......................................................4
Viewing Your MMSI Number...................................................... 4
Distress Calls.............................................................................. 4
Sending an Undesignated Distress Call................................ 4
Sending a Designated Distress Call...................................... 5
Waiting For and Receiving and Acknowledgment for a
Distress Call........................................................................... 5
Stopping Automatic Retransmission of Distress Calls........... 5
Revoking a Distress Call........................................................ 5
Placing Calls............................................................................... 5
Placing Individual Calls.......................................................... 5
Placing Group Calls............................................................... 5
Placing All-Ships Calls........................................................... 5
Individual Call or Group Call Channels.................................. 6
Requesting a Vessel's Position.............................................. 6
Receiving Calls........................................................................... 6
Receiving Distress Calls and Distress Relay Calls................ 6
Receiving All-Ships Urgency and Safety Calls...................... 6
Receiving Individual Routine Calls.........................................6
Receiving Position Requests................................................. 6
Receiving Position Calls........................................................ 6
Receiving Group Calls........................................................... 6
Position Tracking........................................................................ 7
Selecting Vessels and Activating Position Tracking.............. 7
Viewing and Deactivating Vessels on the Position Tracking
List......................................................................................... 7
Deleting a Vessel From the Position Tracking List................ 7
Call Log.......................................................................................7
Viewing the Calls in the Call Log........................................... 7
Placing a Call from a Call Log................................................7
Saving a Vessel or Station to the Directory from the Call
Log......................................................................................... 7
Deleting a Call Log Entry....................................................... 7
Directory..................................................................................... 7
Viewing Saved Vessels and Stations in the Directory........... 7
Adding an Entry to the Directory............................................ 7
Editing an Entry in the Directory............................................ 8
Deleting an Entry from the Directory...................................... 8
Adding a Group...................................................................... 8
Editing a Group...................................................................... 8
Deleting a Group.................................................................... 8
DSC Settings.............................................................................. 8
Manual Position Information.................................................. 8
Changing the Channel to 16 Automatically............................ 8
Sending Automatic Replies.................................................... 8
Automatic Transmitter Identification System.............. 8
Entering Your ATIS Identification Number.................................. 8
Turning On and Off ATIS............................................................ 9
Viewing Your ATIS Identification Number.................................. 9
NMEA 0183 and NMEA 2000®....................................... 9
Additional Functionality with Other Garmin Devices................... 9
Communicating Over NMEA 0183 or NMEA 2000..................... 9
Configuring DSC NMEA Transmissions..................................... 9
System Settings............................................................. 9
Number Settings......................................................................... 9
Units Settings..............................................................................9
Configuring the Time Offset................................................. 10
Selecting the Frequency Band................................................. 10
Changing a Channel Name...................................................... 10
Restoring Factory Settings....................................................... 10
Appendix....................................................................... 10
Alarms and Messages.............................................................. 10
Channel Lists............................................................................ 10
VHF 315 Series Specifications................................................. 10
NMEA....................................................................................... 10
NMEA 0183 IN Sentences Supported................................. 10
NMEA 0183 OUT Sentences Supported............................. 10
NMEA 2000 PGN Information.............................................. 10
Cleaning the Outer Casing....................................................... 11
Index.............................................................................. 12
Table of Contents i
Introduction
WARNING
See the Important Safety and Product Information guide in the
product box for product warnings and other important
information.
Handset Overview
Item Key Description
PTT Hold to broadcast.
À
DISTRESS Lift the door and press to send a DSC distress
Á
Â
ENTER On the home screen, rotate to change the
Ã
PWR
North America:
16/9
International:
16+
HI/LO Press to change the transmission mode and
CLEAR Press to return to the previous menu option.
MENU From the home screen, press to view
DSC Press to view a menu of DSC options.
VOL/SQ Press to switch between volume or squelch.
call with a programmed MMSI number
(Entering Your MMSI Number, page 4).
Press the key that corresponds to the onscreen item to select the item.
channel.
On the home screen, press to toggle weather
channels (NOAA® Weather Broadcasts and
Alerts, page 4).
Rotate to change the volume or squelch level
after pressing the VOL/SQ key.
Rotate to highlight an item in a list.
Press to select an item.
Hold to turn the radio on and off.
Press to toggle between preset channels.
power settings.
Press to cancel or mute an incoming DSC call.
configuration options.
From a menu, press to return to the home
screen.
Radio system status, settings, and alerts.
À
International, Canadian, or USA frequency band
Á
*Latitude
Â
*Longitude
Ã
*Time
Ä
**Speed over ground (SOG) or course over ground (COG)
Å
Soft-key functions change depending on your current activity
Æ
Working channel
Ç
*The latitude, longitude, and time appear when the radio has a
GPS signal acquired. You can enter data manually when the
radio does not have a GPS signal.
** The SOG and COG appear when the radio has a GPS signal
acquired, and the option is enabled in the menu (Number
Settings, page 9).
System Status Icons
Icon Status
Receiving an incoming signal
Transmitting
Transmitting at 25 W
Transmitting at 1 W
Saved channel
Local receiver mode, often used in areas with radio frequency
interference (harbors)
ATIS enabled
Position tracking enabled
Auto channel changing disabled
Incoming or missed DSC call
Weather alert
GPS signal acquired
Basic Operation
Turning On and Off the Device
Hold PWR.
TIP: You can set the device to turn on automatically (System
Settings, page 9).
Adjusting the Volume
Set the squelch level to MIN before you adjust the volume
1
(optional).
Select VOL/SQ twice.
2
VOLUME appears on the screen.
Turn the dial to increase or decrease the volume.
3
Home Screen
Adjusting the Squelch Level
You can adjust the sensitivity level of the squelch to filter out
background noise. When you increase the squelch level, you
hear fewer weak background signals when you are receiving.
Select VOL/SQ.
1
SQUELCH appears on the screen.
Turn the dial counter-clockwise until you hear audio.
2
Turn the dial clockwise until there is no background noise.
3
Introduction 1
Selecting the Frequency Band
You can switch between the USA, International, or Canadian
frequency bands (Channel Lists, page 10).
NOTE: Not all frequency bands are available on all device
models.
Select MENU > CHANNEL > FREQUENCY BAND.
1
Select a frequency band.
2
Selecting a Channel
You can select an International, Canadian, or USA channel
(Selecting the Frequency Band, page 2).
Turn the dial.
Transmitting with the Radio
Select an appropriate channel.
1
Verify that the channel is clear.
2
NOTE: You cannot obstruct the communications of other
people due to Federal Communications Commission (FCC)
and international guidelines.
Select PTT on the handset.
3
appears at the top of the screen.
Speak into the handset.
4
NOTE: Five minutes is the maximum time allowed for
transmission. After five minutes of transmitting, PTT is
disabled until you release PTT.
Release PTT.
5
Scanning and Saving Channels
Scanning All Channels
When you scan channels, the radio searches for channels that
are broadcasting. When a channel is broadcasting, the radio
pauses on that channel until the broadcast stops. After four
seconds of inactivity on a channel, the radio resumes scanning.
NOTE: When you turn on ATIS (Automatic Transmitter
Identification System, page 8), the radio does not scan or
save channels.
Select SCAN > ALL.
1
Select an option:
2
• To exclude the currently active channel from subsequent
passes and resume scanning, select SKIP.
• To scan channel 16 each time another channel is
scanned, select +CH16.
For example, the radio scans channel 21, channel 16,
channel 22, channel 16, and so on.
+CH16 appears on the device screen.
• To scan channel 16 in its usual order, select -CH16.
For example, the radio scans channel 14, channel 15,
channel 16, channel 17, and so on.
• To end the scan, select EXIT.
The radio stops scanning and tunes to the last used,
active channel.
Saving a Channel
You can save any channel except the weather (WX) channels.
You can save an unlimited number of channels.
Select SCAN.
1
Turn the ENTER dial until you find a channel you want to
2
save.
Select SAV CH.
3
appears above a saved channel.
Removing a Saved Channel
Select SCAN.
1
Turn the ENTER dial until you find a saved channel.
2
NOTE: A saved channel has above it.
Select SAV CH.
3
Scanning Saved Channels
You can scan only the channels you have saved. When a saved
channel is broadcasting, the radio pauses on that channel until
the broadcast stops. After four seconds of inactivity on a
channel, the radio resumes scanning.
NOTE: When you turn on ATIS (Automatic Transmitter
Identification System, page 8), the radio does not scan or
save channels.
Select SCAN > SAVED.
1
Select an option:
2
• To exclude the currently active channel from subsequent
passes and resume scanning, select SKIP.
• To scan channel 16 each time another saved channel is
scanned, select +CH16.
For example, the radio scans saved channel 21, channel
16, saved channel 25, channel 16, and so on.
+CH16 appears on the device screen.
• To stop scanning channel 16, select -CH16.
For example, the radio scans saved channel 21, saved
channel 25, and so on.
• To end the scan, select EXIT.
The radio stops scanning and tunes to the last used active
channel.
Monitoring Multiple Channels
Before you can monitor multiple channels, you must turn off
ATIS (Automatic Transmitter Identification System, page 8).
You can monitor priority channels and the currently selected
channel for broadcasting activity. Channel 16 is the first-priority
channel on your radio. Channel 9 is the default second-priority
channel. You can program a different channel as your secondpriority channel (Selecting a Different Second-Priority Channel,
page 2).
Select WATCH.
Monitoring Two Channels
You can monitor your current channel and channel 16 at the
same time.
Select WATCH > DUAL.
DUAL WATCH and the channels you are monitoring appear
on the screen. For example, DUAL WATCH CH:, and 16 + 9.
Monitoring Three Channels
You can monitor your current channel, channel 16, and your
second-priority channel at the same time.
Select WATCH > TRI.
TRI WATCH, your current channel, channel 16, and your
second-priority channel appear on the screen. For example,
TRI WATCH CH:, and 75 + 16 + 9.
Selecting a Different Second-Priority
Channel
You can select a channel other than channel 9 as your secondpriority channel.
Select MENU > CHANNEL > 2ND PRIORITY.
1
Turn the ENTER dial to the preferred channel.
2
Select OK.
3
2 Basic Operation