Congratulations on your new SAILOR RT5022/RT5020 VHF.
SAILOR marine equipment is specially designed for the extremely rugged conditions on
board a ship, based on more than 50 years of experience with all kinds of vessels, from
small pleasure crafts, over fishing vessels working under all climatic conditions, to the
biggest ships.
SAILOR ® is one of Europe’s leading manufacturers of maritime radio communication
equipment - a position which has been maintained by means of constant and extensive
product development. We have a worldwide network of distributors with general agencies in
more than 80 countries. All our distributors are specially trained to service all your SAILOR
products.
About this manual
This manual is for the daily user of the system. Additionally, it includes a section on the
installation procedures, and - on page iii - standard distress procedures. We highly recom-
mend you to read the manual before you start using the equipment.
Notice: There may be some minor differences in the graphic layout of the product in the
manual compared to the actual physical unit.
Abbreviations used in this manual
ADDRAddress
BIChannel mode when sailing on European rivers
BQDSC Call Acknowledgement Reply
CUControl Unit
DSCDigital Selective Calling
DWDual Watch
EOSDSC End Of Sequence
GMDSSGlobal Maritime Distress and Safety System
MMSIMaritime Mobile Service Identification
PTT“Push To Talk” button
RQDSC Call Acknowledgement Request
RXReceive/r
SQSquelch
TXTransmit/ter
UTCCoordinated Universal Time
®
Please note
Any responsibility or liability for loss or damage in connection with the use of this product and
the accompanying documentation is disclaimed. The information in this manual is provided
for information purposes only, is subject to change without notice, may contain errors or
inaccuracies, and represents no commitment whatsoever. This agreement is governed by
the laws of Denmark.
Doc. No.: B5022GB0Issue: F/0549
ii
Training Information
The Thrane & Thrane RT5022/RT5020 VHF radio is designed for “occupational use only”
and is also classified as such.
It must only be used in the course of employment by individuals aware of both the hazards
as well as the way to minimize those hazards.
The radio is thus NOT intended for use in an uncontrolled environment by general public.
The RT5022/RT5020 has been tested and complies with the FCC RF exposure limits for
“Occupational Use Only”. The radio also complies with the following guidelines and
standards regarding RF energy and electromagnetic energy levels including the
recommended levels for human exposure:
•FCC OET Bulletin 65 Supplement C, evaluating compliance with FCC guidelines for
human exposure to radio frequency electromagnetic fields
•
American National Standards Institute (C95.1) IEEE standard for safety levels with
respect to human exposure to radio frequency electromagnetic fields, 3 kHz to 300 GHz
•American National Standards Institute (C95.3) IEEE recommended practice for the
measurement of potentially hazardous electromagnetic fields – RF and microwaves
Below the RF exposure hazards and instructions in safe operation of the radio within the
FCC RF exposure limits established for it are described.
Warning:
Your Thrane & Thrane radio set generates electromagnetic RF (radio frequency) energy
when it is transmitting. To ensure that you and those around you are not exposed to
excessive amounts of that energy (beyond FCC allowable limits for occupational use) and
thus to avoid health hazards from excessive exposure to RF energy, FCC OET bulletin 65
establishes an Maximum Permissible Exposure (MPE) radius of 3” (0.9m) for the maximum
power of your radio (25W selected) with an half wave omni-directional antenna having a
maximum gain of 3 dB (5.2dBi). This means all persons must be at least 3” (0.9m) away from
the antenna when the radio is transmitting.
Installation:
1. An omni-directional antenna with a maximum power gain of 5.2 dBi must be mounted at
least 9.6” (2.9m) above the highest deck where people may be staying during radio
transmissions. The distance is to be measured vertically from the lowest point of the
antenna. This provides the minimum separation distance which is in compliance with RF
exposure requirements and is based on the MPE radius of 3” (0,9m) plus the 6.6” (2m)
height of an adult.
2. On vessels that cannot fulfil requirements in item 1, the antenna must be mounted so
that its lowest point is at least 3” (0.9m) vertically above the heads of people on deck and
all persons must be outside the 3” (0.9m) MPE radius during radio transmission.
•Always mount the antenna at least 3” (0.9m) from possible human access
•Never touch the antenna when transmitting
•Use only authorized T&T accessories
3. If antenna has to be placed in public areas or near people with no awareness of the radio
transmission, the antenna must be placed at a distance not less than 6” (1.8m) from
possible human access.
Failure to observe any of these warnings may cause you or other people to exceed FCC RF
exposure limits or create other dangerous conditions.
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iii
Quick DSC distress call
(only for emergency use)
1. If necessary, switch on by pressing the ON/OFF button
2. Lift up the lid covering the orange key and press for 5 seconds.
3. The Alarm indicator light will flash and will be accompanied by a sound. Distress
message is sent at the continuous tone.
4. Unless stopped manually, by pressing the
distress call is automatically repeated every 3½-4½ minutes until distress acknowledgment is received.
Wait for distress acknowledgement and start mayday procedure. If an alarm panel is
connected the VHF DISTRESS button on this unit will have the same functionality. All further
handling should continue in front of your main VHF DSC.
NOTE: If needed the default language (English) is obtained by pressing the following keys:
key or switching the unit off, the
Mayday procedure
When DSC distress acknowledgement is received after you have pressed DISTRESS, or if
you otherwise need to commence distress traffic via radiotelephony on the distress traffic
frequency channel 16, follow this procedure:
•“MAYDAY”,
•“this is”,
•the 9-digit identity
•the ship’s position in latitude and longitude or other reference to a known geographi
cal location,
•the nature of distress and assistance wanted,
•any other information which might facilitate the rescue.
Upon reception of a DSC distress alert from another ship in distress, you should acknowledge the receipt by radiotelephony on the distress traffic frequency channel 16, by doing the
following:
and
the call sign or other identification of the ship,
•“MAYDAY”,
•the 9-digit identity of the ship in distress, repeated 3 times,
“this is”,
•the 9-digit identity or the call sign or other identification of own ship, repeated 3times,
•“RECEIVED MAYDAY”.
iv
0549
Your VHF at a glance
(RT5020/RT5022)
1 2 3 4 5 678910
Alarm
Call
DW
1W
SQ
Vol
0191 - 05
Int
US
BI
Tx
111213141516
1. Loudspeaker
2. Volume level indicator
3. Squelch level indicator
4. Indicator lamps. Condition when lit:
1W: 1 watt transmission mode.
Alarm: Alarm call received.
Call: DSC call for you received.
DW: Dual watch mode
5. Telephone display
6. Indicators. Condition when lit:
Tx: Transmitting
Int: International channel system
activated
(Is used when sailing on any sea in the
world except in US waters)
US: US channel system activated
(Is used when sailing in US Waters)
BI: BI channel system activated
(Is used when sailing on the rivers of
Europe)
7. Dimming button
8. Menu button
9. Mute alerts
10. Keyboard.
11. DISTRESS button (Lid with spring.
Normal push button underneath)
12. Information/Message display
13. Squelch control. Adjust to silent when no
station is received
14. ON/OFF / VOLUME control
15. Replay button
16. Quick-selection key for channel 16.
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v
Contents
Introduction .............................................................................................................................. ii
About this manual ................................................................................................................ ii
Abbreviations used in this manual ...................................................................................... ii
Training Information ............................................................................................................... iii
Quick DSC distress call.......................................................................................................... iv
Mayday procedure................................................................................................................... iv
Your VHF at a glance (RT5020/RT5022) ................................................................................. v
1 Radio communication in brief .......................................................................................... 3
10.1 General information .................................................................................................. 55
10.2 General DSC facilities .............................................................................................. 55
10.3 Specific data for transceiver unit RT5022 ................................................................55
10.4 Specific data for transceiver unit RT5020 ................................................................56
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1Radio communication in brief
1.1Powering VHF
The VHF is turned on by a single press on the ON/OFF/Volume button. The VHF
is turned off by pressing the ON/OFF/Volume button for 3 seconds.
Always indicated by a count down window in the information display, except if the
radio is powered down in distress mode.
Any connected devices (Alarm Panel, Handset, CUs) will be operational only if
the VHF is powered.
1.2Operating VHF radio communication
The VHF is operated by means of a handset.
To bring the VHF in transmission mode the handset must be hooked off and the PTT button
on the handset has to be pressed. Transmission is indicated by the lighted TX indicator.
Receive mode is always reached by releasing the PTT button.
HandsetHandset
hooked on
Transmit and receive is performed on the working channel shown in the telephone display.
If the handset is used with an RT5020 duplex radio, received signal can always be monitored
in the handset earpiece. With the RT5022 simplex/semi-duplex radio the received voice
signal can only be monitored in the earpiece while PTT is released.
hooked off
Press PTT
PTT
Release PTT
PTT
Basic
1.3Receiving a call on Channel 16
When you hear your call name in the loudspeaker:
1. Lift the handset.
2. Press the PTT key.
3. Repeat the name of the station calling you and say “This is [your ship’s name].”
4. Suggest a channel other than 16 by saying “Channel [suggested number]”.
5. Say “Over” and release the PTT key
to allow your caller to confirm the suggested new channel.
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3
6. Switch to the new channel – for example, channel 71
– and begin your conversation. Press PTT only when you are talking. If you are on a
simplex channel (in other words, a channel that can carry only one transmission at a
time), always say “Over” just before releasing. With duplex channels (ship-shore
calls), the conversation can be two-way as with a normal land telephone calls.
Basic
1.4Making a radiotelephone call
A radiotelephone call is preferably to be commenced using DSC. Alternatively the following
public calling procedure shall be used:
1. Select channel 16 (by pressing ) or other agreed channel.
2. Lift the handset.
3. Press the PTT key and make your call.
First, say the name of the station
you are calling three times.
Then say “This is [your ship’s name”], again three times.
Finally, say “Over”.
4. Release the PTT key to listen.
5. When answered, agree upon a channel,
switch to that channel – for example, channel 6 – and begin your conversation. Press
PTT only when you are talking. If on a simplex channel (in other words, a channel
that can carry only one transmission at a time), always say “Over” just before
releasing.
1.5Speaker volume
The volume in the loudspeaker (internal and optional external) is adjusted by turning the
VOLUME control. The volume level is visualized in the telephone display. The volume can be
adjusted to a mute mode by turning the volume control left (down). If the volume is adjusted
to the mute level the VOL LED will flash.
1.6Earpiece volume
The volume level of the default handset earpiece is adjusted by selecting the Handset
Volume menu (4.3.1).
The and buttons are used to adjust the level. The level is indicated in the
information/message display.
1.7Squelch
The squelch level is adjusted by using the squelch control. The actual squelch
level is visualized in the telephone display.
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1.8Channel selection
The system is defaulting to channel 16 after a normal power-on.
Channels can be selected using the
(increasing to next valid VHF channel) or
(decreasing channel). Channels can also be entered using the numeric keypad.
The active working channel is always shown in the upper display.
1.9Dual watch
Dual watch is a mode where the priority channel (16) is scanned periodically for
a signal while listening on a working channel.
Dual watch is activated by pressing the DW button.
The DW indicator is lit while DW is active. Dual watch is deactivated by:
•Pressing DW – Continues to receive on the working channel.
•Pressing PTT – Transmits always on working channel
•Pressing ´16´.
•Pressing Replay - Dual watch is terminated while the message is replayed
and will then be re-invoked
Selecting a new channel while in dual watch mode will continue dual watch on the new
selected working channel, unless a signal is found on channel 16.
1.10Replay
Replay is a facility built into the product which always will allow the operator to repeat the
latest 90 seconds of received voice data to be replayed in the acoustic devices.
Received voice data is defined when the squelch is open. This means that 90 seconds of
actual traffic could be accumulated over several hours/days.
Basic
If the 90 seconds storage limit is reached the oldest data is simply overridden with the
newest received traffic data (FIFO principle).
Activating replay
The front panel has a dedicated replay button.
A push on the replay button will bring up a (replay) window in the
information/message display. Holding down replay will drive a
counter to be updated in the display where it is determined how many
seconds of recorded data is wanted for replay - the last XX seconds
of recorded data.
If pressing the replay button in normal receive mode this will still allow the unit to receive
audio in the speaker system.
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5
When releasing the replay button the replay function will take over the audio system and
start to replay the last XX seconds of data received on any channel. The time when the traffic
was received and the channel on which it was received is displayed during replay.
Volume control can be used on the replay data to adjust sound pressure in audio devices.
Basic
During replay “— —” is shown in the channel display, to indicate that listening on the live
receive signal is disabled in this situation (as well as recording is disabled). If a signal is
received on the working channel while replay is activated, this is indicated in the lower left
corner of the replay window.
Replay is interrupted when:
•Pressing , or
•Pressing PTT
•Receiving any message in the information/message display
Recorded voice data will not survive power-down of any kind
.
1.11Dimming
To adjust the light intensity the dim button is pressed.
While the dim button is pressed the intensity is changing. Releasing the dim
button will maintain the current light intensity.
A renewed pressing of the dim button will change the direction of the light intensity change.
If the VHF is dimmed to zero, any key press will wake up the light to a minimum visible at
night. Active text in the information/message display might prevent dimming to zero.
It is possible to reduce illumination to zero. If you press a key in this state the light will
illuminate to the lowest illuminated state for 5 seconds, where after it will return to the zero
illumination state. If a message is shown on the screen while dimming is set to zero, the
illumination is adjusted to the lowest nonzero value.
1.12Contrast
Contrast of the information/message display (and thereby optimizing the vertical viewing
angle) can be adjusted initially by entering the Display Contrast menu. Use the arrows to
adjust contrast. The contrast will be set simultaneously during adjustment.
6
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2Basic DSC operations
When switched on, your VHF automatically monitors channel 70 for incoming DSC calls.
2.1Menu operation
To operate DSC functionality the menu system is used. The main menu can be activated by
pressing . From the main menu all parts of the menu tree can be reached (see
chapter: Menu tree).
All menus have a unique hierarchical number. The main menu is the only menu which does
not have a number. The number is (to a certain level) displayed in the upper right corner of
the screen. If more than 6 items are available in the menu, arrows will indicate if remaining
items are to found above () current items or below () current displayed menu
items.
The active menu item is highlighted. A press on or will move the focus.
A press on will select the item which is currently in focus.
A press on any of the numeric keys (1 to 9) in a menu will quickly select the menu item
having the corresponding number.
A press on will return to the previous menu window (normally one level up). If
is pressed in the main menu, the menu will be turned off.
Selecting the menus for transmitting DSC calls will lead to a sequence of windows (flows).
The flow sequences are controlled by the (accept and proceed to next window) or
(cancel and return to the previous window) buttons.
Following a menu hierarchy or a window flow might include a guidance text (e.g. “OK/next”
). Certain windows and lists do not show any guidance texts. These windows can
always be left by (jumping to main menu) or (returning to the previous
window).
Basic
2.2Receiving a DSC call
An incoming call will always be recognized by activity on the CALL indicator – and if more
severe (Distress and Urgency calls), also the ALARM indicator. When receiving a DSC call
the message will be displayed immediately in the information/message display, if not
obstructed by any other operations taking place. Received DSC calls will always be accompanied by a sound alarm.
0544
7
When you receive a call you can read in the display whether the call is addressed to All
Call
DW
1W
Vol
SQ
Alarm
Int
US
BI
Tx
DSC Call
1
2 PSTN Call
5 DSC Logs
3 Group Call
4 Emergency
1 Station Call
Ships, ships in a specific geographic area, a group of ships or to your ship (identified by your
MMSI number) as an individual call.
If you are busy you can choose to handle the call a little later (e.g. by pressing ),
which will stop the alarm sound.
Basic
When you are ready to accept the call, lift the handset or press . Your choices
handling the particular call will now appear. Follow the instructions.
If an individual call is received it will not be acknowledged before you accept the call.
2.3Transmitting DSC Calls
All DSC calls are initiated from the DSC Call Menu (1).
When entering a menu item, you will be guided through
the call construction. For every call generated you will
have the possibility of verifying the call before you
transmit it.
2.4Call a ship station
To call a ship station and suggest a working channel, enter the Station Call menu (1.1) and
follow the instructions. Have the ships MMSI number ready if it is not available via the
contact list.
Please also refer to Section 4.1.2 for using extended sub-addressing.
2.5Call a shore station
To call a shore station, enter the Station Call menu (1.1) and follow the instructions. Have the
shore MMSI number (00*) ready if it is not available via the contact list.
2.6Direct call to a PSTN via a coast station
This kind of calls requires automatic/semi-automatic support from the coast station, and is
available only within some countries. If the service is not available, you will need to make a
simple shore station call and request the connection via radiotelephony.
To make a direct phone call to a PSTN or a mobile phone, enter the direct phone call menu
(1.2) (PSTN Call) and follow the instructions. Have MMSI number (00*) for a reachable shore
station ready if it is not available via the contact list, as well as the public phone number you
would like to request.
2.7Call a group of ships
To call a group of ships enter the Group Call menu (1.3) and follow the instructions. Have
the group MMSI number (0*) ready if it is not available via the contact list.
8
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2.8Create emergency calls
In the category of emergency calls (1.4) you will find the
following menu:
Transmitting any of these calls should be done with
caution. Please make yourself familiar to the common
procedures for using these calls.
Selecting any of the call types will lead to a call establishing flow with maximum flexibility.
You should make yourself familiar with the flow sequences, but be sure you do not actually
send the message by mistake. In other words, never press the transmit verifica-
tion window if you do not actually intend to send an emergency call.
Designated distress calls are composed entering the menu (1.4.1). From this list the Nature
of Distress is selected. A fast method to reach this selection list is a short press on .
The call completion is then continued from here. If no nature of distress is selected, but
is pressed for 5 seconds, an undesignated distress is sent.
Distress calls are always transmitted by pressing the button for 5 seconds. After you
have transmitted a distress call the VHF is in distress mode (distress call is re-transmitted
once each 3½-4½ minutes). The distress mode can be exited only by reception of the
appropriate distress acknowledgement call or if you press for 5 seconds, or if you
power off the VHF. The VHF will start up in distress mode after a power failure.
Received and transmitted DSC messages can be found
with details in the DSC Logs (1.5). A special log contains
distress related calls. The call log system will store the
last (20) calls sorted by date and time.
DSC Logs
1 DSC Distress Log
2 DSC Receive Log
3 DSC Transmit
1.5
Basic
Each of the logs and each of the calls within the logs
have their own possible actions upon selection
(e.g. printing).
2.10Entering your position into the system
Ship’s position and the time for this position are essential to the success of a possible rescue
operation. This information is automatically added to a DSC distress call sent from your VHF.
Therefore it is important always to keep this information updated.
Normally a GPS is connected to the VHF. In case of correct installation this will assure
correct updating of position and time.
If your VHF is not connected to an external GPS system, or a malfunction of the GPS
connection is detected by the VHF, the VHF will automatically prompt you to update your
position manually 1 minute after power-up and then every 4 hours. The position and time can
always be entered on your initiative via the Set Position & Time selection in the Settings
menu (4.1.1).
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9
3Your VHF in detail
3.1Abnormal power-down
If for any reason the main power disappears for a period less than 10 minutes, the VHF will
be able to turn itself on when power is resumed (without pressing ON/OFF).
If the VHF was abnormally powered down for less than 1 minute, the VHF will start up with
the same settings as before the power failure took place (communication channel, volume,
squelch settings, etc.).
If the abnormal power down lasted more than 1 minute the VHF might start up with the
settings as they were last time the VHF was turned off normally.
Detail
3.2Settings
All volume settings are stored as default during the power off sequence.
3.3Automatic squelch programming
It is possible to attach a squelch level with each channel if particular noisy channels require
continuous special squelch setting. If a channel is selected squelch level is inherited from
either the global setting or a stored squelch level for that particular channel (default is that all
channels are using the global squelch level).
Storing squelch level on a channel is done while listening on that particular channel:
•Push the button.
•The squelch level is now automatically adjusted to suppress the noise on the
channel. While adjusting, noise is heard. The squelch level indicator follows adjustment, and finally display the required level. The squelch level is memorized on the
channel, indicated by flashing the SQ LED (flashing 3 seconds).
If a channel with a programmed squelch level is selected and the SQUELCH button is turned
the programmed squelch level for that channel is removed (global level).
During Dual Watch or Scanning only the global squelsh level is used (as indicated by the
squelch level indicator). Channel 16 squelch level is not programmable.
All programmed channel squelch levels are stored during power down and restored during
power-up sequence.
10
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3.4Setting channel mode
The VHF is delivered from factory with both Int. & US channels enabled for selection from
the operation menu.
Provision of other country regions (channel tables) for selection requires the intervention by
an authorized Sailor representative in order to enable such.
The operator selection of preferred country region (channel table) is done from menu 4.4.1
(channel mode) and the selected country region is indicated in the front panel display (note:
this does not apply to the CA channel table and any custom defined channel tables).
The selected country region is stored during power down sequence.
Using the country region BI (Inland waterways) Dual Watch (DW) and scanning mode are not
available.
3.5Private channels
Private channels can be defined by using the service interface only (distributor/dealer).
Enabled private channels become valid for selection on the front panel. Using the /
will simply make the private channel number appear above the highest numeric
channel number. 30 (3x10) private channels are available for each enabled channel mode.
Note: In US mode private channels P0-9 will be pre-programmed with the 10 weather
channels. In CA mode, P0-2 is pre-programmed with the 3 regional weather channels.
Private channels can be selected using the numeric key pad:
•Private channels:Long press on followed by a digit (0-9)
Detail
•Leisure channels:Long press on followed by a digit (0-9)
•Fisher channels:Long press on followed by a digit (0-9)
Continued activation of the keys ´3´, ´5´ or ´7´ will cause the letters F-, L- or P- respectively
to be displayed.
3.6Duplex channels
If duplex channels are selected on an RT5022 simplex/semi-duplex radio (see chapter:
Maritime channels) the VHF will operate in semi-duplex mode meaning that the VHF is
operated in simplex mode, but uses two different frequencies to receive and transmit.
If a duplex channel is selected on an RT5020 duplex radio full duplex is supported on these
channels, meaning that both receiver and transmitter is active simultaneously.
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11
3.7ATIS (inland waterways only)
p
p
g
y
y
ATIS is mandatory to use in inland waterways on e.g. the Rhine. ATIS is a digital data
stream containing ships call sign coded into a DSC-like message, sent over the voice
channel each time the PTT button is released. If PTT is continuously pressed ATIS is
automatically sent each 5 minutes.
ATIS is enabled automatically when BI is selected in menu (4.4.1).
For purpose of operator comfort the received ATIS signal on the active voice channel will be
muted.
The ATIS call sign is programmable from the service interface or from menu 4.4.3. once.
The format of the programmed ATIS code is entered according to the following call sign
prefix conversion table:
I.e. a Dutch (MID-number 244) ship with call sign SP1234, should be programmed with the
following number:
ha1NNovember14
a16
o20
23
24
244P1234
with the digit 2 entered as the first digit, and the digit 4 as the last digit.
3.8Transmitter power
Transmitter output power can always be chosen while the radio is active. Pressing the 1W
button will toggle the transmitter power between low power (below 1W) and high power
(below 25W). The 1W indicator is lit when low power is selected. As a default any channel
shift will cause the transmitter power to be adjusted to the maximum power allowed on that
channel.
12
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3.9Channel scanning
Scanning is an extension to the dual watch functionality, by which it is possible to watch
multiple channels. It is possible to scan:
•All channels in a sequence
•A number of selected channels in a sequence organized into individual 3 scan tables
- Scan table A, B and C.
The scan type can be selected from the Scanning menu (3). The DW indicator is lit as well
(because the priority channel 16 by default is included in any scan table).
During the scan “SC” is shown in the upper display.
If an active signal is found on a channel different from channel 16 the radio remains on that
channel for 4 seconds (but still respecting dual watch requirements), where after scanning is
resumed. The telephone display is displaying the active channel.
If an active signal is found on channel 16, the VHF is locked on channel 16 until the signal
disappears, where after scanning is resumed. The telephone display is displaying the active
channel (16).
While the active scanning window is visible, scanning can be terminated by:
•Lifting the handset off the hook
•Pressing ´16´ - Channel 16 is used as working channel
•Pressing DISTRESS – Initiates DSC distress
•Pressing – Working channel is used as before scanning was entered
(regardless of carrier state).
•Pressing Replay - Message is replayed
•Pressing any numeric key - Normal channel entry
If scanning is terminated while no active signal was found, the VHF will receive on the
working channel (as it was before scanning was initiated).
If scanning is terminated (handset hook-off) while an active signal is received, the VHF will
operate on this channel after termination.
3.10Creating scan tables
The scanning tables are user configurable. Creating or editing a scanning table by organizing
a subset of channels (e.g. Table A) for scanning is done by selecting the Edit Scan Table A
entry (3.5.1).
Detail
Private channels (non-numeric identifiers – P, F or L) can be part of a channel table. The
number of channels in a scan table is limited to 16.
3 scan tables (A,B & C) can be defined for each enabled channel mode.
Scanning tables are stored during the power-down sequence.
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13
4DSC operations in detail
4.1MMSI Number
To operate VHF with DSC the equipment needs to be configured with your vessel’s MMSI
number. If not configured before installation, the VHF will inform you to program the 9-digit
MMSI number at start-up.
The vessel’s MMSI number is programmable from the DSC menu (4.5). It can be programmed only once from this menu after which changing of the programmed MMSI will be
possible only through the service interface.
If the MMSI number has been programmed correctly, the number is displayed in the default
idle display after start-up.
Detail
4.1.1Sub-Addressed MMSI
The VHF supports setting the 10th digit of the MMSI number to a non-zero value. This is to
be used for being able to individually address multiple VHF’s on board a single vessel (with
the same 9-digit MMSI).
The 10th digit of the MMSI number can be programmed by the operator. After programming
the vessel MMSI number the 10th digit will always be set to 0.
Programming the 10th bit is done via the menu (4.5.6.1)
If the unit is configured to a non-zero X10 value, it will only respond to received individual
routine calls matching all 10 digits in the MMSI number. Transmitted routine calls or acknowledgements to individual routine calls are using the self-ID with non-zero digit 10.
If X10 is programmed to zero the unit reaction modes, if receiving an individual call with nonzero X10 in the address or self-ID, can be selected using the menu (4.5.6.2).
Selecting 1 Acknowledge non-zero, the unit will receive the call. A call acknowledgement
will be returned to exactly the same address as received in the self-ID (default after programming the MMSI number).
Selecting 2 Acknowledge zero, the unit will receive the call. A call acknowledgement will be
returned to address as received in the self-ID, but with X10 set to zero.
Selecting 3 Reject call, will ignore the received call.
4.1.2Using extended sub-address in a calling sequence
Entering the station call menu (1.1) allows you to address an RT call request to another radio
supporting the extended address format. If the receiver MMSI is not a coast station (00*), it is
possible to enter either 9 or 10 digits in the Enter Receiver MMSI window. Entering 9 digits
will automatically set the 10th digit to zero for the receiver address.
All other call flows than RT station call requests to a ship station are not supporting this
feature.
It is possible to create entries in the contact list with 9 or 10 digit MMSI numbers, unless they
are group station (0*) or coast station (00*) numbers.
14
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4.2Group MMSI number
If your radio is configured as member of a group(s) it will receive group calls to that group.
The VHF can be configured to be part of (up to 10) groups. The group MMSI numbers can
be programmed from menu 4.5.2.
The configured group numbers are shown as a list. You can add a group MMSI number by
selecting the <empty> list entry and press . Enter a valid group MMSI and press
.
A group number can be changed by selecting the number , edit the number and press
OK. A group number can be removed from the list by selecting the number, press ,
delete the number and press .
4.3Differentiating incoming calls by ringing
tones
Your VHF rings in various ways according to the nature of the call, as shown in the following
diagram:
TONE SIGNAL
3 sec.
DISTRESS
TRANSMIT
DISTRESS
URGENCY
5 sec.
&
3 1/2 - 4 1/2 min
TxTxTxTx
3 sec.
3 1/2 - 4 1/2 min
60 sec.
3 sec.
3 1/2 - 4 1/2 min
3 sec.
Detail
SAFETY
CALLS
ROUTINE &
PSTN
39717
If an individual call acknowledgement is received, an alarm tone is activated that is equal to
1 sec.
8 sec.
the alarm tone used for receiving a call request of the same type.
Calls that are not received as distress calls or calls with category distress or urgency will
always engage the prescribed alarm sound. For any other DSC calls the call sound on
reception can be enabled/disabled from a Setup menu (4.3.2).
If you receive a call with an alarm sound, you will always be able to mute the alarm by
pressing the button to be able to finish current radiotelephony call. This procedure
will not affect the actual call accept procedure.
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