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Receiving Calls

Receiving Distress Calls and Distress Relay Calls

When receiving a distress call or a distress relay call, DISTRESS or DISTR RELAY, and information about the 
call, such as MMSI number and the nature of the distress, appear on the radio screen. A distress call is sent 
from a vessel in need of assistance, and a distress relay call is sent from either another vessel or a station on 
behalf of a vessel in need of assistance.
The radio sends data related to the call over the NMEA network based on how you configure MMSI filters 
(

Configuring DSC NMEA Transmissions, page 21

).

NOTE: When a distress call is received, the radio switches to channel 16 automatically after ten seconds.

When a distress call is received, select an option:
• To view additional information about the distress call and switch to channel 16, select  .
• To accept the distress call and switch to channel 16, select OK.
• To review information about the distress call without switching to channel 16 automatically, select 

PAUSE.

• To ignore the distress call and stay on the current channel, press CLEAR.

Receiving All-Ships Urgency and Safety Calls

When you receive an all-ships urgency or safety call, ALL SHIPS appears on the screen, and URGENCY or 
SAFETY appears as the type of call. If the channel request is for an invalid channel, INVALID CH REQUEST 
appears on the screen.
NOTE: When an all-ships call is received, the radio switches to the requested channel automatically after ten 
seconds.

When an urgency or safety call is received, select an option:
• To view additional information about the call and switch to the requested channel, select  .
• To accept the call and switch to the requested channel, select OK.
• To review information about the call without switching to the requested channel automatically, select 

PAUSE.

• To ignore the call and stay on the current channel, press CLEAR.

Receiving Individual Routine Calls

When you receive an individual routine call, INDIVIDUAL appears on the screen, and ROUTINE appears as the 
type of call. If the channel request is for an invalid channel, INVALID CH REQUEST appears on the screen.
NOTE: When an individual call is received, the radio switches to the requested channel automatically after ten 
seconds.

When a call is received on a valid channel, select an option:
• To accept the call and switch to the requested channel, select OK.
• To review information about the call without switching to the requested channel automatically, select 

PAUSE.

• To ignore the call and stay on the current channel, press CLEAR.

14

Digital Selective Calling

Summary of Contents for VHF 315 Series

Page 1: ...VHF315SERIES Owner sManual...

Page 2: ...arks of Garmin Ltd or its subsidiaries registered in the USA and other countries GHS is a trademark of Garmin Ltd or its subsidiaries These trademarks may not be used without the express permission of...

Page 3: ...ss Calls 10 Sending an Undesignated Distress Call 11 Sending a Designated Distress Call 11 Waiting For and Receiving and Acknowledgment for a Distress Call 11 Stopping Automatic Retransmission of Dist...

Page 4: ...lity with Other Garmin Devices 21 Communicating Over NMEA 0183 or NMEA 2000 21 Configuring DSC NMEA Transmissions 21 System Settings 22 Number Settings 22 Units Settings 22 Configuring the Time Offset...

Page 5: ...Introduction WARNING See the Important Safety and Product Information guide in the product box for product warnings and other important information Introduction 1...

Page 6: ...o 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 PWR North America 16 9 International 16 Hold to turn the radio on and o...

Page 7: ...2 Soft key functions change depending on your current activity Working channel 1 The latitude longitude and time appear when the radio has a GPS signal acquired You can enter data manually when the ra...

Page 8: ...led Auto channel changing disabled Incoming or missed DSC call Weather alerts enabled GPS signal acquired Basic Operation Turning On and Off the Device Hold PWR TIP You can set the device to turn on a...

Page 9: ...the handset appears at the top of the screen 4 Speak into the handset NOTE Five minutes is the maximum time allowed for transmission After five minutes of transmitting PTT is disabled until you relea...

Page 10: ...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...

Page 11: ...ers you can set the receiving sensitivity to LOC to decrease receiver sensitivity In remote areas and on open water you can set the receiving sensitivity to DIST to ensure that you use the maximum ran...

Page 12: ...through the horn are heard through the radio speaker 2 Hold PTT 3 Select an option To make an announcement speak into the handset To adjust the volume of the hailer broadcast turn the ENTER dial 4 Re...

Page 13: ...us entry in the sequence 4 Select ACCEPT NOAA Weather Broadcasts and Alerts NOTE This feature is not available on all radio models NOAA weather broadcasts on the weather WX channels are available only...

Page 14: ...rn on ATIS Automatic Transmitter Identification System page 20 Entering Your MMSI Number NOTICE You can enter your MMSI number only once If you must change your MMSI number after entering it you must...

Page 15: ...hannel 16 on high 25 W power 5 Select PTT on the handset or radio to relay your message The radio waits for an acknowledgment ACK on channel 70 from a listening station Waiting For and Receiving and A...

Page 16: ...l radio operation Select RESEND to resend the distress call cancellation and start the process again Distress Call Cancellation Script When you revoke a DSC distress call Revoking a Distress Call page...

Page 17: ...quest with your call 4 Select CALL The radio transmits the call on channel 70 then changes to the selected channel Individual Call or Group Call Channels When placing an individual or group call you s...

Page 18: ...ALL SHIPS appears on the screen and URGENCY or SAFETY appears as the type of call If the channel request is for an invalid channel INVALID CH REQUEST appears on the screen NOTE When an all ships call...

Page 19: ...on the screen Select OK The radio saves the position report in the call log Receiving Group Calls When you receive a group call GROUP appears on the screen and the radio prompts you to change to the...

Page 20: ...ls in the position tracking list Vessel Time Ship 1 0 minutes immediately when starting position tracking Ship 2 5 minutes Ship 3 10 minutes Ship 1 15 minutes Ship 2 20 minutes Ship 3 25 minutes Viewi...

Page 21: ...of calls If the calling station is not saved in your directory the MMSI number appears in the list of calls A symbol indicates the station type Symbol Meaning MMSI Number Format Ship station XXXXXXXXX...

Page 22: ...Select DSC DIRECTORY DIRECTORY 2 Select a saved vessel or station Adding an Entry to the Directory 1 Select DSC DIRECTORY ADD ENTRY 2 Enter the MMSI number Entering Text page 9 3 Enter a name optional...

Page 23: ...data and you should update it immediately Entering Position Information Manually 1 Select MENU SYSTEM MANUAL GPS 2 Enter your current coordinates and the present time Entering Text page 9 3 Select ACC...

Page 24: ...r and to learn about ATIS requirements for your region Your radio disables these functions when you enable ATIS Digital Selective Calling DSC Monitor two or three channels Dual watch and Tri watch Sca...

Page 25: ...iate a man overboard distress call from the radio the chartplotter prompts you to navigate to the man overboard location If you connect a Garmin autopilot system to the same NMEA 2000 network the char...

Page 26: ...re a GPS position to show course over ground COG and speed over ground SOG information Units Settings You can set the unit of measure used for values shown on the radio Select MENU SYSTEM UNITS SPEED...

Page 27: ...st when GPS data from a NMEA network or position data entered manually is more than four hours old Sounds again when GPS data from a NMEA network or position data entered manually is more than 23 5 ho...

Page 28: ...from 1 W to 25 W Maximum antenna gain 9 dBi Antenna port impedance 50 ohms Hailer output power 20 W at 4 ohms Hailer horn impedance 4 ohms NMEA 2000 LEN 9 0 Vdc 1 50 mA NMEA NMEA 0183 IN Sentences Sup...

Page 29: ...position data Transmit AIS models only PGN Description 129038 Class A position report 129039 Class B position report 129040 Class B extended position report 129794 AIS class A static and voyage relate...

Page 30: ...h 6 F factory settings 23 foghorn 8 9 G group calling 13 15 18 19 H hailer horn 8 home screen 3 customizing 22 I icons 4 K keys 2 power 4 M MMSI 10 N networking 21 NMEA 0183 21 24 NMEA 2000 21 24 25 P...

Page 31: ......

Page 32: ...support garmin com GUID 2427D940 C342 48E4 ACB0 3B1CC0ABDD5F v3 April 2021...

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