Antenna Mounting Suggestions
Mounting the VHF antenna properly is very important because it will directly affect the performance of your VHF radio. Use a VHF antenna designed for marine vessels. Since VHF transmission is essentially line-of-sight, mount the antenna at a location on the vessel that is free of obstruction to obtain maximum range. If you must extend the length of the coaxial cable between the antenna and the radio, use a coaxial cable designed for the least amount of power loss over the entire cable length.
For optimal radio performance and minimal human exposure to radio frequency electromagnetic energy, make sure the antenna is: connected to the radio before transmitting properly mounted located where it will be away from people located at least 1.5 meters (5 feet) from the radio
Chapter 3: Getting Started
3.1 Keypad and Rotary Knobs
Several of the keys on the front panel of the main unit serve multiple purposes. For the most part, the function indicated on the first line of the key is accessed by pressing and releasing that key. The function indicated on the second line of the key is accessed by pressing and holding the key for three seconds.
Figure 3-1: Ray54 Keys Layout

Microphone Keys

Key Name 1. PTT 2. UP/DOWN 3. 16/9 Press & Release (<3 sec.) Push-to-Talk Channel increment/decrement and navigating menu item selections Switch between the Priority and Working Channels Press & Hold (>3 sec.) Push-to-Talk Rapid channel change and navigating menu item selections Switch to Secondary Priority CH (9); If already tuned to secondary channel, program a new secondary Priority Channel.

4. HI/LO

TX Power High/Low and ACCEPT key TX Power High/Low and ACCEPT key for menu item selections for menu item selections

Main Unit Rotary Keys

Key Name 5. CH/PUSH 6. PWR/VOL 7. SQ Function Rotate to increment/decrement channels or navigate menu item selections Power radio ON / OFF and adjust volume level Adjust squelch threshold level

Main Unit Push Keys

Key Name 5. CH/PUSH 8. DW/TRI Press & Release (<3 sec.) Press & Hold (>3 sec.) ACCEPT menu item selections ACCEPT menu item selections Dual Watch Mode Tri Watch Mode Activate Menu functions USER (Saved Memory Channel) Mode SAVE/DELETE channel to/from memory Switch to secondary Priority CH (9); If already tuned to secondary channel, program a new secondary Priority Channel. Weather Channel Mode Make Distress Call

9. CALL/MENU Activate DSC functions 10. HL/USER TX Power High/Low
11. SCAN/SAVE Scan ON/OFF 12.16/9 Switch between the Priority and Working Channels Cancel function Designate Distress Type
13. CLEAR/WX 14. DISTRESS

Microphone

1. PTT
Press this Push-to-Talk key to transmit.

2. UP/DOWN

Use the arrow keys to change the active channel number. Press and hold for rapid channel changing. You can also use these keys to scroll through DSC Call and Menu Mode options and make item selections.

3. 16/9

Use this key to switch to the priority channel or to change the value of the Secondary Priority Channel.

4. HILO

Use this key to toggle the transmit power from HIGH to LOW. You can also use it to accept DSC Call and Menu Mode selections.

Main Unit

Rotate this knob to change the current channel number and to change values in Menu mode or during programming. Press the knob to enter values selected in Menu mode or during programming.

6. PWR/VOL

Use this knob to turn the radio ON and OFF and to set the volume.
Use this knob to set the squelch threshold, which cuts off the receiver when the signal is too weak for reception of anything but noise.

8. DW/TRI

Press and release this key to select Dual Watch mode, which monitors the current working channel and CH 16 in cycle. Press and hold to select Tri Watch, which monitors CH 16, the current working channel and the channel you have set as the Secondary Priority Channel in cycle. See Section 4.12.

9. CALL/MENU

Press and release this key to select to enter DSC Call Mode, which is used for making DSC Calls and viewing the DSC Call Logs and the DSC Call Phonebook. A Maritime Mobile Service Identity (MMSI) number is required to operate the DSC equipment in this radio. This number directs DSC calls directly to your radio, much like a telephone number. You can program the MMSI number yourself one time only using the Menu Operation described in Section 6.9, DSC Setup. Otherwise, your Raymarine dealer can program or change the number for you. If the MMSI number has not yet programmed, the message DSC IS NOT OPERATIONAL.PLEASE ENTER MMSI ID is displayed in the dot matrix display when you press and release CALL/MENU. DSC Call menu structure is outlined in the following drawing. Full details on DSC call operation are described in Chapter 5.

10. (SAVED) Memory Mode

Indicates the current channel has been saved in memory. Appears during Saved Scan mode. Only saved channels are scanned during USER mode.

11. (WX) Weather Channel

Weather channel mode is active.
12. (ALERT) Weather Alert
The radio is monitoring for a weather alert.

13. (U I C) Channel Set

Indicates which channel set is selected: US, International or Canadian.

14. (A) Simplex Channel

Indicates that the currently-selected channel is simplex; you transmit and receive on the same frequency.
15. (B) Receive-only Channel
Indicates that you cannot transmit on the currently-selected channel; it is receive-only. Used with Canadian channels only.

16. Channel Number

Displays the current channel number.

17. Dot Matrix Display

Indicates radio functions or special conditions. The type of information displayed depends on the situation. Figure 3-3 demonstrates a typical screen in normal operating mode. The screen is different when sending/receiving a DSC Call (see Chapter 5) or setting up a Menu item (see Chapter 6). Note: In the following sample: (1) The Channel Name is editable (see page 70). (2) Valid position data received from a GPS or manually entered (see page 64). (3) Last line may contain COG/SOG data instead of time (see page 68).
Figure 3-3: Typical Dot Matrix Display Data
Chapter 4: General Operations
4.1 Turning the Power ON and OFF
Turn the PWR/VOL knob clockwise until it clicks. When the unit powers up in Normal mode it: 1. Beeps, illuminates the backlight at full brightness, and displays all segments and indicators for 2 seconds. 2. Displays the software version number on the dot matrix display. 3. Recalls the last CH number, TX power settings and operation mode. If no last-used setting data exists, goes to CH 16 and high TX Power. When GPS Data is available, extended position data is also displayed with the offset time on the dot matrix display. This information will be displayed when display option for the position and time is enabled on the Menu. See Section 6.6. To turn the unit OFF, rotate the Volume knob completely counterclockwise until it clicks.

4.2 Setting the Volume

Adjust the PWR/VOL knob to control the loudspeaker volume level. Turn clockwise to increase the volume; counterclockwise to decrease the volume. Note: Key press beep volume is also controlled by the VOL level.

4.3 Setting the Squelch

The Squelch circuit sets the threshold for cutting off the receiver when the signal is too weak for reception of anything but noise. To properly set the squelch, rotate the SQ knob counterclockwise until audio is heard. Then rotate clockwise until background noise disappears.

4.10 Using the Scan Modes
The Ray54 is equipped with four types of scan options: All Scan, Saved (Memory) Scan, Priority All Scan and Priority Saved Scan. If there are no channels in memory, the default is All Scan. This function automatically searches for broadcasting channels. If a transmission is received, the scan stops on the receiving channel as long as it is present. If the signal is lost for five seconds, the radio resumes scanning. During the Scan Modes: Press the microphone Channel UP/DOWN keys or rotate the CH knob on the main unit to change the scan direction. UP (CH key)/clockwise (CH knob) increments the channel while DOWN (CH key) /counterclockwise (CH knob) decrements it. Press and release SCAN/SAVE to terminate the SCAN mode. Press and release CLEAR/WX to terminate the SCAN mode. Press 16/9 to terminate the SCAN mode and tune to the Priority Channel. DW/TRI and HILO/USER keys are disabled.

All Scan

Press and release the SCAN/SAVE key when no channels are stored in memory to activate the All Scan function.
ALL SCAN appears on the dot matrix display. In All Scan mode, all channels in the channel set are scanned in sequence, assuming no channels have been stored in memory. After the last channel number has been scanned, the cycle repeats. All Scan is demonstrated in the figure to the left. Note: Whenever Weather Alert is activated, the WX Alert channel is also monitored during All Scan. If the WX Alert tone is detected, the scan is halted to receive the Weather Alert broadcast.

Saved (Memory) Scan

Press and release the SCAN/SAVE key when there is at least one channel in memory to activate the Saved Scan function.
SAVED SCAN appears on the dot matrix display.
In Saved Scan mode, only the channels that have been saved in memory are scanned in sequence. After the last saved channel number has been scanned, the cycle repeats. Saved Scan is demonstrated in the figure to the left.
Note: Whenever Weather Alert is activated, the WX Alert channel is also monitored during Saved Scan. If the WX Alert tone is detected, the scan is to halted to receive the Weather Alert broadcast.

Priority All Scan

Press and hold the SCAN/SAVE key while All Scan is active to initiate Priority Scan.

ALL PSCAN appears on the dot matrix display. Priority Scan searches for activity on all channels but alternates scanning the Priority Channel 16 after each channel. Priority Scan is demonstrated in the figure to the left.
Note: Whenever Weather Alert is activated, the WX Alert channel is also monitored during Priority All Scan. If the WX Alert tone is detected, the scan is halted to receive the Weather Alert broadcast.

Priority Saved Scan

Press and hold the SCAN/SAVE key while Saved Scan is active to initiate Priority Saved Scan.
SAVED PSCAN appears on the dot matrix display. Priority Saved Scan is much like Priority Scan except that the radio alternates searching for activity on the Priority Channel 16 and the channels stored in memory. Priority Saved Scan is demonstrated in the figure to the left. Note: Whenever Weather Alert is activated, the WX Alert channel is also monitored during Priority Saved Scan. If the WX Alert tone is detected, the scan is halted to receive the Weather Alert broadcast. Press and hold SCAN/SAVE for 3 seconds to exit Priority/Priority Saved Scan and return to All/Memory Scan. Press and release the CLEAR/WX key to exit Priority/Priority Saved Scan and return to the last-used channel.
4.11 Adding Channels to Memory
The Ray54 can store any channel. The stored channels are the ones scanned in the Saved (Memory) Scan mode.
To Add Channels to Memory
1. During normal operation mode, use the CH knob to select the desired channel for programming. 2. Press and hold the SCAN/SAVE key for 3 seconds.
The SAVED icon appears to indicate the current channel has been saved in memory. Any number of channels can be saved as memory channels. Separate memory channel groups exists for USA, International, and Canadian frequency sets.
To delete channels from memory
1. During the normal mode, use the CH knob to select the channel to be deleted. 2. Press and hold the SCAN/SAVE key for 3 seconds. The selected channel is deleted from memory. To view the channels set in memory, switch to USER mode, as described in Section 4.13, USER Channel Mode.
4.12 Using the Monitor Modes
The Watch Modes monitor the programmed Priority Channel and other userselected channel(s). The watch is halted when activity is detected on a monitored channel. The Ray54 is equipped with 2 types of monitor operations: Dual Watch and Tri Watch.

Dual Watch

Press and release the DW/TRI key to activate the Dual Watch mode.
DUAL CH16 appears in the dot matrix display. Dual Watch monitors the current working channel and Channel 16 in cycle. Dual Watch is demonstrated in the figure to the left; the sample working channel is CH 72. Whenever Weather Alert is activated, the WX Alert channel is also monitored during Dual Watch. Press and release the DW/TRI key to terminate Dual Watch and return to the previous working channel. Press and hold the DW/TRI key to terminate Dual Watch mode and go into Tri Watch mode. Press and release the CLEAR/WX key to terminate Dual Watch mode and return to the last-used channel. Press and release the 16/9 key to terminate Dual Watch mode and switch to the Priority Channel. Note: During Dual Watch mode, the SCAN/SAVE, USER, WX and CH keys are inactive and sounds an error beep if pressed.

Push in the CH knob to view and accept the request to send your position data. Decline the request by pressing CLEAR/WX.

5.7 Call Log

The Call Log is a list of the last 20 DSC received INDIVIDUAL, GROUP and ALL SHIPS call types by number and time of call. This does not include Distress Calls, which are maintained in their own log. If the calling vessel or station is listed in your DSC Phonebook, the vessel or station name appears in the display as it is listed. If the caller is not listed in your directory, the callers MMSI ID number appears in the display. Usually, the radio is set to a channel selected by the caller if a channel change request is accepted. When a DSC Call is received, the envelope icon appears on the LCD. The envelope icon disappears when the log is opened. 1. Press and release the CALL/MENU key to enter the DSC menu. The arrow is pointing to INDIVIDUAL.
2. Rotate the CH knob until the arrow points to CALL LOG.
3. Push in the CH knob to select the Call Log. Entry 01 appears first with call type and time of the last call. This is the most recent call.
4. Using the CH knob, scroll down the list of up to 20 entries.
If the caller had requested a change to an unsupported working channel (channel 75, for example), UC appears in the Channel Number field, indicating the radio was Unable to Comply with the channel change request.
Making a Call from a Call Log Entry
You can make a routine Individual Call to any caller listed in the log. 1. Rotate the CH knob until the log entry you wish to call appears. 2. For received Individual or All Ships Call, push the CH knob. The Individual Call screen appears addressed to the caller.
3. Follow the same directions you would for initiating an Individual Call using the Phonebook, as outlined on page 34. 4. To make a Group Call using the Call Log, push the CH knob to bring up the Group Call menu and make the call as described in Transmitting a Group Call on page 5-38.
Saving an MMSI ID Number from a Call Log Entry
Any undefined MMSI number that is listed on an entry in the Call Log can be saved into the Phonebook. 1. Rotate the CH knob to select the desired Call Log entry.
2. Press and hold the SCAN/SAVE key. The MMSI number is entered in the appropriate field of the Phonebook.
3. Use the CH knob to enter the NAME that you wish to have associated with this MMSI ID number. Rotate the CH knob to select each character and then push in the knob to accept it. Note: In this operation, only the Name field can be edited. You can only edit the MMSI ID from the Phonebook.
4. When the NAME entry is complete, push in the CH knob to accept it.

5.8 DSC Distress Log

When GPS Information Not Available
If no GPS data is available, the NO GPS icon appears, POS DATA REQ is displayed on the dot matrix display, followed by NO POS DATA. An alarm sounds for 5 seconds or until you acknowledge by pressing any key.
The position (lat/lon) fields are set to all 9s and time field is set to all 8s. The alert repeats every four hours as long as no position information has been entered manually. If position data is entered manually but has not been updated during the previous 23.5 hours, all the position fields are set to 9s and the display reverts to NO POS DATA. Note: The Manual Lat/Lon function is valid only when your radio is not connected to a GPS receiver.
To manually set the GPS position and time settings:
1. Rotate the CH knob to scroll down the list until the arrow points to GPS/ TIME.
2. Push in the CH knob. The arrow is pointing to MANUAL POS.
3. Push CH again to accept. The Manual Position screen appears.
4. Using the CH knob, fill in the Lat/Lon information, one character at a time. The first character space is highlighted with a flashing underline. i. Rotate the CH knob to scroll through the selections. Note: The last selection in each field is a left arrow (<), which represents a BACKSPACE. Accepting the arrow returns the current character to its default value and moves you back to the previous position. ii. When the desired character appears, push in the CH knob to accept it. The next character to be filled in sequence is underlined (_). iii. Continue this process until all latitude data been selected.
You can also press the microphone UP/ DOWN keys to select each character and then press the microphone HI/LO key to accept.
5. Use the same process to complete longitude information.
6. Push in the CH knob to accept and move onto UTC time. Select the time characters in the same manner. Note: You must enter the TIME parameter in UTC time and not in local time.
When time data is entered manually, the NO GPS indicator remains illuminated and the UTC designator appears following the time.
Note: When the final selection is made the radio returns to the previous Menu Selection. To exit this sub-mode, select BACK or else press the 16/9 or CLEAR/WX keys.

The Radio Setup menu item is used to determine four separate settings: Frequency Band Channel Name Ring Volume Key Beep
To adjust these settings:
2. Rotate the CH knob to scroll down the list until the arrow points to RADIO SETUP.
3. Push the CH knob to accept. The Radio Setup screen appears.
Make your selection from the options on the list, described as follows.
The Ray54 can transmit and receive all USA, International and Canadian frequencies. This setting determines which channel set is being used. The appropriate indicator is illuminated in the LCD: U for US, I for International, or C for Canadian channel sets.

Channel (CH) Name

By default, the Ray54 lists a descriptive name of up to 12 characters in the top line of the dot matrix display for each channel. This option modifies the name for the currently-selected channel from its default.

Display Name

Use this option to toggle the Channel Name ON or OFF. If off, the top line of the dot matrix display is blank for that channel.

CH Info

Using this feature you can delete or change the Channel Names from the default. 1. From the CH NAME menu item, rotate the CH knob until the arrow on the dot matrix display points to CH INFO. 2. Push in the CH knob to select. The currently assigned name appears. 3. Push the CH knob to display your options: EDIT changes the channel name displayed. CLEAR completely removes the channel name. The top line of the dot matrix display is blank for that channel. 4. Push CH again to select EDIT or CLEAR. 5. If you select EDIT, use the CH knob to modify the NAME field using the same technique described in Adding an Entry on page 59.
Deleting a Channel Name Entry
Use this feature to completely remove a Channel Name from the list. If the name is deleted, the top line of the dot matrix display is blank for that channel. Note: The CH NAME is not returned to the factory default value following a reset (page 80).

Ring Volume

This setting is used to set the volume of the ring that is sounded when an incoming call is received. Select HIGH or LOW. Note: The ring volume setting is overridden if a DSC Urgency or Distress Call is received. These alarms must meet volume levels required by regulations.

Key Beep

This setting is used to set the volume of the beep that sounds when a key is pressed. Select HIGH, LOW or OFF.

6.9 DSC Setup

The DSC Setup menu item is used to determine these four functions: the radios MMSI ID number the radios Group MMSI ID number how your radio responds to a Position Reply request whether your radio automatically changes channels for incoming Distress and All Ships Urgency Calls
To adjust the DSC Settings:
2. Rotate the CH knob to scroll down the list until the arrow points to DSC SETUP.
3. Push the CH knob to accept. The DSC Setup screen appears.
Make your selection from the following options: MY MMSI ID GROUP SETUP POS RPLY AUTO CH CHG

My MMSI ID

This operation stores the MMSI number required for DSC communications, including Distress Calls. If you try to access a DSC function before entering the MMSI number, an error message appears and you are prompted to enter the MMSI ID. This is a one time operation. After the MMSI number has been programmed: you will not be able to change it only your dealer/distributor can change it after entering your MMSI ID, accessing this menu item will merely display the programmed number
To enter or view the MMSI ID number:
1. From the DSC SETUP menu item described on page 71, rotate the CH knob until the arrow points to MY MMSI ID.
2. Push the CH knob to accept. If an existing MMSI ID is stored, the value appears. If the MMSI ID is blank, dashes appear, indicating that one has yet to be entered.
3. To enter the MMSI ID number, rotate the CH knob to select the digits using the same technique described in Adding an Entry on page 59.
4. When all digits are selected, press and hold the CH knob to accept.
5. Re-enter all nine MMSI digits.
6. When complete, press and hold the CH knob to accept.
7. Press the CH knob one last time to save the MMSI ID number. If the second entry does not match the first entry, the radio exits MY MMSI ID and returns to the previous menu. Note: You cannot begin the MMSI ID number with 0 (single zero), as this prefix indicates a GROUP ID. You cannot begin the MMSI ID number with 00 (double zero), as this prefix indicates a COAST STATION. The Ray54 is designed to be used as a recreational Ship Station only.

Group MMSI Setup

This operation sets up the MMSI number that is used for DSC Group Calls between radios that share a common Group MMSI number. You can program up to three Group MMSI ID numbers and associated Group names, which can be up to 11 characters long. Group MMSI ID numbers always begin with a zero (0). You only enter the last 8 digits of the Group I D number; the initial 0 is automatically entered for you.

RCV Freq 157.100 157.150 161.800 161.850 161.900 161.950 162.000 156.075 156.175 156.225 156.275 156.325 156.375 156.425 156.475 156.575 156.625 156.675 156.725 156.875 156.925 156.975 157.025 157.075
Single Freq Use x x Coast Guard Liaison and Maritime Safety Information Broadcasts. Broadcasts announced on channel 16. U.S. Coast Guard only Public Correspondence (Marine Operator) Public Correspondence (Marine Operator) Public Correspondence (Marine Operator) Public Correspondence (Marine Operator) Public Correspondence (Marine Operator) x x x x x x x x x x x x x x x x x U.S. Government only Port Operations and Commercial, VTS. Available only in New Orleans / Lower Mississippi area. U.S. Coast Guard only Port Operations Port Operations Commercial. Used for Bridge-to-bridge communications in lower Mississippi River. Intership only. Non-Commercial Non-Commercial Non-Commercial Non-Commercial (Intership only) Port Operations Port Operations Port Operations (Intership only) Non-Commercial Commercial. Non-Commercial in Great Lakes only. Commercial. Non-Commercial in Great Lakes only U.S. Government only Environmental protection operations.

CH. No 82A 83A 88 88A

XMIT Freq 157.125 157.175 157.225 157.275 157.325 157.375 157.425 157.425
RCV Freq 157.125 157.175 161.825 161.875 161.925 161.975 162.025 157.425
Single Freq Use x x U.S. Government only U.S. Coast Guard only Public Correspondence (Marine Operator) Public Correspondence (Marine Operator) Public Correspondence (Marine Operator) Public Correspondence Marine Operator) Public Correspondence only near Canadian border x Commercial, Intership only
Boaters should normally use channels listed as Non-Commercial. Channel 70 is used exclusively for Digital Selective Calling (DSC) and is not available for regular voice communications. Channels 75 and 76 are reserved as guard bands for Channel 16 and are not available for regular voice communications.
Notes: 1. The letter A following a channel number indicates simplex use of the ship station transmit side of an international duplex channel. Operations are different from that of international operations on that channel. 2. Channel 13 should be used to contact a ship when there is danger of collision. All ships of length 20 meters or greater are required to guard VHF channel 13, in addition to VHF channel 16, when operating within U.S. territorial waters. 3. Channel 16 is used to hail other stations or for distress alerting.

156.750 156.750

156.800 156.850

All areas All areas

18A 19A 19A 20 21A 21B 22A
156.900 156.950 156.950 157.000 157.050 157.100
156.900 All areas 156.950 156.950 161.600 All areas except PC PC All areas
157.050 All areas 161.650 157.100 All areas All areas

25 25B 28 28B

157.150 157.200 157.250 157.300 157.350 157.400 -
161.750 161.800 161.850 161.850 161.900 161.950 162.000 162.000
PC All areas PC AC All areas AC, GL, PC PC AC
CH No. 60 61A 61A 62A 62A 64 64A 65A
XMIT Freq 156.025 156.075 156.075
RCV Freq 160.625 156.075 156.075
Area of Operation Use PC PC EC PC EC PC Ship/Shore and Public Correspondence Intership and Ship/Shore: Canadian Coast Guard only. Intership, Ship/Shore and Commercial: Commercial fishing only. Intership and Ship/Shore: Canadian Coast Guard only. Intership, Ship/Shore and Commercial: Commercial fishing only. Ship/Shore and Public Correspondence Intership, Ship/Shore and Commercial: Commercial fishing only. Intership, Ship/Shore, Commercial, Non-commercial, Safety: Search & rescue and antipollution operations on the Great Lakes. Towing on the Pacific Coast. Port operations only in the St. Lawrence River areas with 1W maximum power. Pleasure craft in the inland waters of Alberta, Saskatchewan and Manitoba (excluding Lake Winnipeg and the Red River). Intership, Ship/Shore, Commercial, Non-commercial, Safety and Ship Movement: Port operations only in the St.Lawrence River/Great Lakes Areas with 1-watt maximum power. EC All areas except EC All areas All areas except EC EC PC Intership, Ship/Shore and Commercial: Commercial fishing only. Intership, Ship/Shore, Commercial, Non-commercial, Safety: May also be used for communications with aircraft engaged in coordinated search and rescue and antipollution operations. Intership, Ship/Shore and Non-commercial: For marinas and yacht clubs. Intership, Ship/Shore, Commercial and Non-commercial Intership, Ship/Shore and Commercial: Commercial fishing only. Intership, Ship/Shore, Commercial, Non-commercial, Safety and Ship Movement
156.125 156.125 156.125 156.225 156.225 156.275 156.125 160.825

156.225 EC 156.275

156.325

156.375 156.375

156.425 156.475 156.475 156.575

CH No. 71 72

XMIT Freq 156.575 156.625

XMIT Freq 157.175 157.225 157.275 157.325 157.375 157.425
RCV Freq 161.775 161.825 161.875 161.925 157.375 157.425
Single Freq Use x x x x Public correspondence, Port Operations and Ship Movement Public correspondence, Port Operations and Ship Movement Public correspondence, Port Operations and Ship Movement Public correspondence, Port Operations and Ship Movement Port Operations and Ship Movement Port Operations and Ship Movement
Intership channels are for communications between ship stations. Intership communications should be restricted to Channels 6, 8, 72 and 77. If these are not available, the other channels marked for Intership may be used. Channels 10, 67 and 73 should be avoided within VHF range of coastal areas in Europe and Canada. Channel 70 is used exclusively for Digital Selective Calling (DSC) and is not available for regular voice communications.
Notes: 1. Channel 06 may also be used for communications between ship stations and aircraft engaged in coordinated search and rescue operations. Ship stations should avoid harmful interference to such communications on channel 06 as well as to communications between aircraft stations, ice breakers and assisted ships during ice seasons. 2. Channels 10 or 73 (depending on location) are also used for the broadcast of Marine Safety Information by the Maritime and Coast Guard Agency in the UK only. 3. Channel 13 is designated for use on a worldwide basis as a navigation safety communication channel, primarily for intership navigation safety communications. 4. Channels 15 and 17 may also be used for on-board communications provided the effective radiated power does not exceed 1 Watt. 5. The use of Channels 75 and 76 should be restricted to navigation related communication only and all precautions should be taken to avoid harmful interference to channel 16. Transmit power is limited to 1 Watt.
WX Channels (North America only)
Weather Channel WX 1 WX 2 WX 3 WX 4 WX 5 WX 6 WX 7 WX 8 WX 9 WX 10 Frequency in MHz 162.550 162.400 162.475 162.425 162.450 162.500 162.525 161.650 161.775 163.275

Appendix C: Glossary

Appendix C:
Term All Scan Canadian Channels CH DSC Dual Watch Duplex FCC International Channels ITU LCD MMSI NOAA Priority Channel Priority Scan (PSCAN) PTT switch RF RX Saved Scan Simplex Squelch TX Tri Watch US Channels

Glossary

Meaning A feature that scans all channels. Channel designator as defined by Industry Canada. Channel selection key Digital Selective Calling A feature that monitors the Priority Channel 16 while working on another channel. Transmit and receive on different frequencies Federal Communications Commission (US) Channel designator as defined by the ITU International Telecommunications Union (EU) Liquid Crystal Display Maritime Mobile Service Identity; a number issued by each country to identify maritime stations National Oceanographic and Atmospheric Administration (USA) Channel 16 or 9 A feature that alternates monitoring the Priority Channel 16 with each of the regular channels Microphone push-to-talk switch Radio Frequency Receive Scans only user-selected memory channels Transmit and receive on the same frequency A circuit that sets the threshold for cutting off the receiver when the signal is too weak for reception of anything but noise. Transmit A function that monitors the Priority Channel and the Secondary Priority Channel while working on another channel. Channel designations as defined by the FCC.