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Lowrance electronic 8VHF Section 7 - Sending and receiving DSC Calls, 7-1What is DSC, 7-2Sending DSC Calls

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Section 7 - Sending and receiving DSC Calls

WARNING

A valid USER MMSI must be entered into this radio before these DSC functions can be used. See section 5-1.

7-1 What is DSC?

DSC (Digital Selective Calling) is a semi-automated method of establishing VHF, MF, and HF radio calls. It has been designated as an international standard by the IMO (International Maritime Organization) and is part of the GMDSS (Global Maritime Distress and Safety System).

Currently, you are required to monitor Distress Channel 16, but DSC will eventually replace listening watches on distress frequencies and will be used to broadcast routine and urgent maritime safety information.

DSC enables you to send and receive calls from any vessel or coast station that is equipped with DSC functionality and within geographic range. Calls can be categorized as distress, urgency, safety, or routine, and DSC selects a working channel automatically.

7-2 Sending DSC Calls

You can call any other person that has another DSC equipped radio.

•Quick press the CALL / MENU key to access the following DSC CALL menu options – select LAST CALL to quickly call back the person who called you.

•Note that only four DSC CALL menu options can be shown on the LCD at any one time.

•Press + or – on the microphone or turn the Channel Select knob on the base station to scroll up or down through the menu until the cursor is positioned at the desired option. Press ENT (the center of the Channel Select knob) to display that option.

The following options are available:

DSC CALL	INDIVIDUAL	Make a DSC Call	Section 7-3
	LAST CALL	Repeat the last DSC Call	Section 7-5
	GROUP	Make a Group DSC Call	Section 7-6
	ALL SHIPS	Make an All Ships DSC Call	Section 7-7
	CALL LOG	View DSC Call Log	Section 7-8
	DISTR LOG	View DSC Distress Log	Section 7-9
	SENT CALL	View DSC Sent Call Log	Section 7-10
	LL REQUEST	Request a position report	Section 7-11
	TRACK BUDDY	Automatically track Buddy’s	Section 7-12
	DSC TEST	Make a DSC Test Call	Section 7-13
	MMSI/GPS	View MMSI and GPS information	Section 7-14

Lowrance - Link-8 Operation Instructions

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Contents

ENGLISH lowrance.com Any unauthorized commercial distribution of this manual is strictly prohibited Important safety information Please read carefully before installation and use DANGER Section 1 - General information Section 2 - Basic operation and key functions Page Section 7 - Sending and receiving DSC Calls Section 8 - DISTRESS calls Appendix A - Technical specifications Appendix B - Troubleshooting Section 1 - General information 1-2Customizing your Lowrance VHF radio 1-3How to display and navigate menus 1-4How to enter alphanumeric data 1-5LCD symbols and meanings INT 128° 5.0Kt 55°33.122N 012°42.408E 14:43 ACK NO GPS 1-3Beep tones & call alerts Section 2 - Basic operation and key functions PTT Press To Talk PUSH TO SELECT Enter (ENT) Rotary knob Channel select Radio and DSC setup MENU mode WX/NAV Weather channel NAV (Show waypoint) 3CH SCAN Scan (ALL SCAN & 3CH SCAN) Scan AIS / IC AIS (Automatic Identification System) IC (FOG HORN mode) IC (PA HAILER mode) GO / MOB GO (Reset the Cross Track Error) MOB (Man Over Board) MOB (Temporary waypoint) H/L Transmission power Able key (WX/NAV key) Accept key (AIS/IC key) Section 3 - Radio MENU SELECT options 3-1-1Add a new waypoint 3-1-2Edit or delete a waypoint 3-1-3Go to a new waypoint 3-1-4Go to nearest waypoint (NEAREST WP) 3-1-5Go to temporary waypoint 3-1-6Edit or delete a temporary waypoint 3-1-7Send waypoint data to a chartplotter 3-3-1Add an entry 3-3-2Edit or delete an entry 3-4-1Set distance sensitivity 3-4-2Set local sensitivity 3-6-1Manually enter position and UTC time (MANUAL) 3-6-2Local time (TIME OFFSET) 3-6-3Time format options (TIME FORMAT) 3-6-4Time display options (TIME DISPLY) 3-6-5Position display options (LL DISPLY) 3-6-6Course & speed display options (COG/SOG) 3-6-7GPS alert (GPS ALERT) Section 4 - Radio setup menu (RADIO SETUP) 4-3Ring volume (RING VOLUME) 4-4Key beep volume (KEY BEEP) 4-5Select units (UNITS) 4-6Internal speaker connections (INT SPEAKER) 4-7Set the priority channel (WATCH MODE) 4-8-1TONE ALERT 4-8-2SAME ALERT 4-8-3Receiving a SAME ALERT 4-8-4Receiving SAME TEST messages 4-8-5Enter a SAME CODE (County ID) 4-8-6Select a working SAME code 4-9NMEA protocol (COM PORT) 4-10Select the GPS source (GPS SOURCE) 4-11Favourite channel setup - Wx key (FAV CH SETU) Section 5 - DSC setup menu (DSC SETUP) 5-2-1Create a group (GROUP SETUP) 5-2-2Edit or delete a group name or group MMSI (GROUP SETUP) 5-4Enable ATIS functionality (ATIS SELECT) 5-5Response to individual calls (INDIV REPLY) 5-6Enable DSC functionality (DSC FUNC) 5-7Response type to LL polling calls (LL REPLY) MANUAL AUTO • OFF 5-8Automatic channel switching (AUTO SWITCH) 5-9DSC Test Reply (TEST REPLY) • AUTO 5-10Set the inactivity timer (TIMEOUT) NON AUTO Example: Section 6 - AIS setup menu (AIS SETUP) 6-4GPS redirection (GPS REDIR) 6-5Closest point of approach alarm (CPA ALARM) 6-6Closest point of approach settings (CPA) 6-7Time to closest point of approach (TCPA) Section 7 - Sending and receiving DSC Calls Call to a Buddy Call to others 7-4Acknowledgement of an individual incoming call (INDIV) ABLE 7-5Reply to the Last Call (LAST CALL) 7-6Send a group call (GROUP) 7-7Send an all ships call (ALL SHIPS) SAFETY URGENCY 7-8Send using the call log (CALL LOG) 7-9Send using the distress log (DIST LOG) CALL BACK DELETE • INFO 7-10View sent call log (SENT CALL) • DELETE 7-11Request the LL position of a Buddy (LL REQUEST) 7-12-1Start or stop tracking a Buddy (START TRACK) 7-12-2Select a Buddy to Track (SET BUDDY) 7-12-3Add or delete a Buddy on your track list (TRACKLIST) 7-12-4Set the track your Buddy update interval (INTERVAL) 7-13-1Send a DSC TEST call 7-13-2Receiving an incoming DSC TEST call reply (DSC TEST ACK) 7-13-3Acknowledging an incoming DSC TEST call 7-14View user MMSI and GPS information 7-15Receiving DSC calls ALL SHIPS INDIVIDUAL GROUP 7-17Receiving an individual call (INDIV) UNABLE 7-18Receiving a group call (GROUP) 7-19Receiving a geographic area call (GEOGRAPH) 7-20Receiving a polled position call (POSITION) Section 8 - DISTRESS calls RESEND CANCEL YES 8-2Receiving a distress call (DISTRESS!) 8-4Distress relay individual (INDIV DISTR RELAY) Section 9 - AIS functionality Ships dynamic conditions Normal reporting interval Platforms condition 9-3Using the AIS receiver 9-4AIS Information and display 9-4-1T/CPA approach screen 9-4-2Plotter symbols and meanings Section 10 - General functionality 10-1Using the PA (Public Address) Hailer Appendix A - Technical specifications LOWRANCE Link-8 Page Link-8NMEA 2000 PGNS Appendix B - Troubleshooting Appendix C - US & ROW VHF marine channel charts Special notes on international channel usage C-2USA channel chart Special notes on USA channel usage C-3CANADA channel chart Special notes on Canada channel usage C-4US & Canada WEATHER channels C-5EAS (Emergency Alert Systems) alerts Page Appendix D - EU VHF marine channel charts Special notes on EU international channel usage D-2Inland waterways country specific table - ATIS ON General remarks to Country Specific table: Explanation of specific footnotes in Country Specific table: D-3Special channels Country Item Chart Primary channel Appendix E - MMSI and license information