User guide
Table Of Contents
- Section 1 - General information
- Section 2 - Basic operation and key functions
- Section 3 - Radio MENU SELECT options
- 3-1 Manage your waypoints list (WAYPOINT)
- Section 4 - Radio setup menu (RADIO SETUP)
- 4-1 Channel (UIC)
- 4-2 Channel names (CH NAME)
- 4-3 Ring volume (RING VOLUME)
- 4-4 Key beep volume (KEY BEEP)
- 4-5 Select units (UNITS)
- 4-6 Internal speaker connections (INT SPEAKER)
- 4-7 Set the priority channel (WATCH MODE)
- 4-8 Weather alerts (WX ALERT)
- 4-9 NMEA protocol (COM PORT)
- 4-10 Select the GPS source (GPS SOURCE)
- 4-11 Favorite channel setup - Wx key (FAV CH SETU)
- 4-1 Channel (UIC)
- Section 5 - DSC setup menu (DSC SETUP)
- 5-1 Enter or view your USER MMSI (USER MMSI)
- 5-2 Maintain your groups
- 5-3 Enter or check your ATIS MMSI (ATIS MMSI)
- 5-4 Enable ATIS functionality (ATIS SELECT)
- 5-5 Response to individual calls (INDIV REPLY)
- 5-6 Enable DSC functionality (DSC FUNC)
- 5-7 Response type to LL polling calls (LL REPLY)
- 5-8 Automatic channel switching (AUTO SWITCH)
- 5-9 DSC Test Reply (TEST REPLY)
- 5-10 Set the inactivity timer (TIMEOUT)
- 5-1 Enter or view your USER MMSI (USER MMSI)
- Section 6 - AIS setup menu (AIS SETUP)
- Section 7 - Wireless handset setup menu (HS SETTING)
- Section 8 - Sending and receiving DSC calls
- 8-1 What is DSC?
- 8-2 Sending DSC Calls
- 8-3 Send an individual call (INDIVIDUAL)
- 8-4 Acknowledgement of an individual incoming call (INDIV)
- 8-5 Reply to the Last Call (LAST CALL)
- 8-6 Send a group call (GROUP)
- 8-7 Send an all ships call (ALL SHIPS)
- 8-8 Send using the call log (CALL LOG)
- 8-9 Send using the distress log (DIST LOG)
- 8-10 View sent call log (SENT CALL)
- 8-11 Request the LL position of a Buddy (LL REQUEST)
- 8-12 Track your Buddy (TRACK BUDDY)
- 8-13 Make a DSC test call (DSC TEST)
- 8-14 View user MMSI and GPS information
- 8-15 Receiving DSC calls
- 8-16 Receiving an all ships call (ALL SHIPS)
- 8-17 Receiving an individual call (INDIV)
- 8-18 Receiving a group call (GROUP)
- 8-19 Receiving a geographic area call (GEOGRAPH)
- 8-20 Receiving a polled position call (POSITION)
- 8-1 What is DSC?
- Section 9 - DISTRESS calls
- Section 10 - AIS functionality
- Section 11 - General functionality
- Section 12 - Wireless handset functionality

Section 10 - AIS functionality
CAUTION
Valid GPS data must be entered into this radio before the AIS functions can be used. The
plotter PPI function will not display targets accurately with incorrect GPS data.
10-1 About AIS
The marine Automatic Identification System (AIS) is a location and vessel information
reporting system. It allows vessels equipped with AIS to automatically and dynamically share
and regularly update their position, speed, course and other information such as vessel
identity with similarly equipped vessels. Position is derived from the Global Positioning
System (GPS) and communication between vessels is by Very High Frequency (VHF) digital
transmissions.
There are a number of types of AIS device as follows:
• Class A transceivers. These are similar to class B transceivers, but they are designed to be
fitted on large vessels such as cargo ships and large passenger vessels. Class A transceivers
transmit at a higher VHF signal power than class B transceivers and therefore can be
received by more distant vessels, and also transmit more frequently. Class A transceivers
are mandatory on all vessels over 300 gross tonnes on international voyages and certain
types of passenger vessels under the SOLAS regulations.
• Class B transceivers. Similar to class A transceivers in many ways, but are normally lower
cost due to the less stringent performance requirements. Class B transceivers transmit at
a lower power and at a lower reporting rate than class A transceivers.
• AIS base stations. AIS base stations are used by Vessel Traffic Systems to monitor and control
the transmissions of AIS transceivers.
• Aids to Navigation (AtoN) transceivers. AtoNs are transceivers mounted on buoys or other
hazards to shipping which transmit details of their location to the surrounding vessels.
• AIS receivers. AIS receivers will generally receive transmissions from class A transceivers,
class B transceivers, AtoNs and AIS base stations but do not transmit any information about
the vessel on which they are installed.
This radio contains an AIS receiver only function.
10-2 AIS - Static and dynamic information
Defined transmit rates for Class A vessels shown below are provided for reference purposes
only. The frequency of messages received will vary due to a number of factors including but
not limited to such factors as antenna height, gain and signal interference.
• Static information is either broadcast every 6 minutes, when data has been amended, or
upon request.
B&G - V50 & H50 Operation Instructions62