SX 35 DSC
OWNER’S HANDBOOK
DECLARATION OF CONFORMITY
(As required by Article 6.3 of Directive 1999/5/EC-RTTE Directive)
Declares under his sole responsibility that the produced Marine VHF radio
transceiver manufactured by
NASA MARINE LTD.
Boulton Road
Stevenage, Herts, SG1 4QG
England
Telephone +44(0)1438 354033
Telefax +44(0)1438 741498
Intended for Worldwide use as a Class D DSC VHF Radiotelephone for use
aboard non-SOLAS vessels and identified by type number
NASA DSC RADIO
to which this declaration refers, has been tested to the essential radio test
suites required by the notified body and is in conformity with the standards
EN 301 025-2
EN 301 025-3
EN60945
and complies with the essential requirements of Directive 1999/5/EC.
Conformity procedure under Annex IV of 1999/5/EC (Technical Construc-
tion file) has been undertaken by
EMCCert Dr. Rasek of Boelwiese 5, 91320 Ebermannstadt, Germany.
The Technical Construction File is held by Mr. Alan Mully at
NASA MARINE LTD.
Boulton Road
Stevenage, Herts, SG1 4QG
England
Telephone +44(0)1438 354033
Telefax +44(0)1438 741498
Alan Mully-Director-NASA MARINE Ltd.
0678
SX 35 DSC
1
NOTICE
This device is only and aid to navigation. Its performance can be
affected by many factors including equipment failure or defects,
environmental conditions, and improper handling or use. It is the
users’s responsibility to exercise common prudence and naviga-
tional judgement, and this device should not be relied upon as a
substitute for such prudence and judgement. Your NASA SX35
DSC VHF radio generates and radiates radio frequency (RF) elec-
tromagnetic energy (EME). This equipment must be installed and
operated in accordance with the instructions contained in this hand-
book. Failure to do so can result in personal injury and/or product
malfunction.
Antenna Mounting and EME Exposure
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 three feet (91 cm) from the Base Station trans-
ceiver and handsets.
2
SX 35 DSC
TABLE OF CONTENTS
DECLARATION OF CONFORMITY............................................................1
GENERAL INFORMATION ............................................................................5
Introduction ...................................................................................................5
LICENSE INFORMATION ..............................................................................6
United Kingdom ...........................................................................................6
Digital Selective Calling (DSC) Capability .............................................7
Required License Information ...................................................................7
Equipment Required ....................................................................................7
Equipment Supplied ....................................................................................7
Optional Equipment.....................................................................................7
BASIC RADIO COMMUNICATION PROCEDURES ...............................8
Using Channel 16 ..........................................................................................8
Calling Another Vessel ................................................................................9
Telephone Calls.............................................................................................9
Prohibited Communication ......................................................................10
INSTALLATION ..............................................................................................11
Transceiver ...................................................................................................11
Antenna.........................................................................................................11
Power Connection .......................................................................................11
NMEA Cable ................................................................................................12
External Speaker Connection ...................................................................12
Rear Panel Connectors ...............................................................................12
Antenna Connector .....................................................................................12
OPERATION .....................................................................................................13
General ..........................................................................................................13
Display and Controls .................................................................................13
Basic Operation ...........................................................................................14
Power On/Off ..............................................................................................14
Volume and Squelch ..................................................................................14
Channel Selection .......................................................................................15
Channel Banks.............................................................................................15
Keypad, Transceiver ...................................................................................15
Keypad, Microphone ..................................................................................16
OPERATING PROCEDURES ........................................................................17
Primary Calling Channel...........................................................................17
Transmitting ................................................................................................17
Working Channel Recall ...........................................................................18
Transmitter Power Setting ........................................................................18
Channel Scanning .......................................................................................18
Priority Scan .................................................................................................19
All Scan .........................................................................................................19
SX 35 DSC
3
Memory Scan ...............................................................................................20
Menu Functions...........................................................................................21
Main Menu Topics......................................................................................22
Directory .................................................................................................22
Lamp ........................................................................................................25
Contrast ...................................................................................................26
Data Set ...................................................................................................26
MMSID Set.............................................................................................29
Time Set ..................................................................................................30
NMEA Set ...............................................................................................31
DSC OPERATION ...........................................................................................32
MMSID .........................................................................................................32
Sending a Distress Call..............................................................................33
Receiving Distress Calls ............................................................................35
Distress sent by another vessel...........................................................35
Distress ACK sent to another vessel..................................................36
Distress Relay from another vessel ...................................................36
Normal DSC Calls ......................................................................................37
Individual DSC Call .............................................................................37
Directory Call .........................................................................................37
Manual Call ............................................................................................39
All Ships Call .........................................................................................40
Group Call ..............................................................................................42
Receiving DSC Calls ..................................................................................43
Individual Call Received .....................................................................43
Last Call Received .................................................................................45
All Ships Call Received .......................................................................46
Group Call Received.............................................................................46
REFERENCE ......................................................................................................47
Maintenance.................................................................................................47
Special Functions ........................................................................................47
Simulator Mode .....................................................................................47
Clear Memory Channels ......................................................................47
New Microphone...................................................................................47
Printer Operation ........................................................................................47
Troubleshooting ..........................................................................................48
Specifications...............................................................................................49
Channel Assignments ................................................................................53
4
SX 35 DSC
GENERAL INFORMATION
Congratulations on your purchase of the SX 35 DSC. It is an advanced ma-
rine VHF communication transceiver offering Digital Selective Calling, an
easy to use four line LCD display, and a separate Channel 70 receiver.
NOTICE
Unauthorized changes or modifications to this equipment may void com-
pliance with Regulatory Agency Type Acceptance. Any changes or modifi-
cation must be approved in writing by the manufacturer.
NOTICE
This radio transceiver has been tested and complies with EN-301 025-1 v1.1.2
(August 2000). This specification provides reasonable protection against
harmful interference in a normal installation. This radio generates, uses
and radiates radio frequency energy and, if not installed and used in accor-
dance with the instructions, may cause harmful interference to other ma-
rine electronic equipment. However, there is no guarantee that interference
will not occur in a particular installation. If this radio does cause harmful
interference to marine electronic equipment, which can be determined by
turning this radio Off and On, the user is encouraged to try to correct the
interference by one or more of the following measures:
•
•
Reorient or relocate the antenna.
Increase separation between this radio and other marine electronic
equipment.
•
Connect this radio to a power source different from that of other ma-
rine electronic equipment.
•
Consult your dealer or an experienced technician for help.
Introduction
Your SX 35 DSC VHF Transceiver is designed for operation in the marine
VHF FM frequency band. The operating frequency range is 156.025 to 163.275
MHz which includes all currently allocated International channels and
United Kingdom M and M2 marina channels.
The transceiver has Digital Selective Calling (DSC) capabilities conforming
to EN-301 025-1 v1.1.2 operation. Distress, All Ships, Individual and Group
DSC call formats are supported. There are thirty two memories for storing
incoming DSC calls and thirty two for your personal DSC call directory.
Other features include all channel scanning, priority channel scanning,
memory channel scanning, one button instant access to channel 16 and an
alphanumeric keypad on the microphone.
SX 35 DSC
5
LICENSE INFORMATION
Your SX 35 DSC complies with European Standard EN-301 025-1 v1.1.2.
Users must know and comply with all applicable rules and regulations for
the country or countries having jurisdiction over waters where your trans-
ceiver is operated. Depending upon national regulations, a station license
may be required for a VHF transceiver and an operator license or permit
may be required for an individual to operate a VHF transceiver.
Prior to using your SX 35 DSC inquire with your national radio communi-
cation authorities.
United Kingdom
The Radiocommunications Agency, an Executive Agency of the Department
of Trade and Industry, is responsible for the management of the nonmili-
tary radio spectrum in the UK.
License information and application forms are available on their web site:
Direct inquiries to:
Radiocommunications Agency (RA)
Wyndham House
189 Marsh Wall
London E14 9SX
Tel: 020 7211 0211
The minimum Certificate of Competence that is required for use of a ship
portable radio is the Short Range Certificate. This certificate covers use of
both standard VHF and VHF/DSC equipment under the Global Maritime
Distress and Safety System in sea area A1.
The training and examinations for these certificates are carried out by:
Royal Yachting Association
RYA House
Romsey Road,
Eastleigh
Hampshire SO5 4YA
Tel: 023 8062 7400
6
SX 35 DSC
Digital Selective Calling (DSC) Capability
You must obtain a nine-digit maritime mobile service identity (MMSI) and
program it into the unit before you transmit. To obtain an MMSI, you will
be asked to provide certain information about your ship. It is important
that you obtain an MMSI because National Coast Guards and other search
and rescue (SAR) agencies use this information to help speed search and
rescue operations.
Required License Information
The following information pertaining to your transceiver is necessary if com-
pleting a station license application
Output Power............................................... 1 Watt (low) and 25 Watts (high)
Emission ................................................................................16K0F3E, 16K0G3E
Frequency Range ......................................................... 156.025 to 157.425 MHz
UK M .........................................................................................157.850 MHz
UK M2 .......................................................................................161.425 MHz
Meets Essential Requirements of RTTE DIRECTIVE (Declaration of Confor-
mity)
Equipment Required
The minimum equipment required for two way voice and DSC VHF radio
communication with vessels and shore stations includes:
•
VHF radio communication transmitter and receiver designed and ap-
proved for marine VHF communication use.
•
VHF antenna and connecting cable. Use a good quality unity gain an-
tenna for best range performance.
•
•
Power source suitable for the VHF transmitter and receiver.
For Digital Selective Calling (DSC) VHF communication radios, con-
nection to a GPS receiver that provides latitude and longitude coordi-
nates and UTC time for distress messages.
Equipment Supplied
•
•
•
•
•
SX 35 DSC Marine VHF Transceiver.
Microphone with alphanumeric keypad.
Mounting Bracket with knobs.
Power Cable with in-line fuse (6.3 Amp).
NMEA Data Cable.
Optional Equipment
Flush Mounting Kit.
•
SX 35 DSC
7
BASIC RADIO COMMUNICATION PROCEDURES
Distress or emergency calls may be made either manually or automatically.
Sending distress calls automatically uses the Digital Selective Calling (DSC)
functions of your transceiver and requires an operating and properly con-
nected navigation receiver. The following procedures are for sending voice
distress messages manually. Sending an automatic distress call is described
in the DSC section of this manual.
Using Channel 16
Channel 16 is the Calling and Distress channel. An emergency may be de-
fined as a situation that threatens human life or property. In such situa-
tions, make sure your transceiver is turned On and set the channel selector
to Channel 16. Then use the following procedure to make a distress call.
The total transmission should not exceed 1 minute.
1. Press the microphone Push To Talk button. Speak slowly and clearly
into the microphone: “Mayday, Mayday, Mayday, this is your
vessel’s name, your vessel’s name, your vessel’s name”.
2. Then repeat once: “Mayday, your vessel’s name”.
3. Continue by reporting your position in latitude and longitude or by
reporting your bearing (true or magnetic, specify which) and dis-
tance from a prominent or well known landmark, geographic fea-
ture or aid to navigation.
4. Explain the nature of your emergency (fire, sinking, collision,
grounding, health condition, injury, etc.).
5. Report the kind of assistance you require (fire, medical aid, pumps,
etc.).
6. State the number of people aboard and the condition of any injured.
7. Estimate the seaworthiness and condition of your vessel.
8. Describe your vessel: length, type, color and any distinguishing fea-
ture.
9. End the message by saying “Over”. Release the Push To Talk but-
ton and listen for a reply.
10. If there is no reply, repeat the above message procedure. If there is
still no response, try another channel.
8
SX 35 DSC
Calling Another Vessel
Channel 16 may be used to establish initial contact with another vessel.
However, its most important use is for voice emergency messages. Chan-
nel 16 must be monitored at all times except when engaged in actual com-
munication on another channel. Channel 16 is monitored by international
search and rescue (SAR) authorities, National Coast Guards and by other
vessels. Use of Channel 16 for calling or hailing must be limited to initial
contact only. Calling should not exceed 30 seconds and may be repeated 3
times at 2 minute intervals.
Prior to making contact with another vessel, determine which channel will
be used for continued communication after the initial contact. Channels 68
and 72 (see Channel Assignment tables) are two channels available for non-
commercial (recreational) communication. Monitor the desired channel for
traffic and, when clear, switch to Channel 16 to make initial contact.
Listen for traffic on the Calling Channel (16). If clear, press the Push To Talk
(PTT) button on the microphone. Speak the name of the vessel you are
calling followed by “this is” and the name of your vessel and your call sign.
Release the PTT and listen for a reply. When the other vessel returns your
call, acknowledge the call with “go to”, the number of the new channel and
“over”. Switch to the new channel and listen for traffic. If necessary, wait
for traffic to clear, and then call the other vessel. As communication pro-
ceeds, end each transmission with “over”. When communication with the
other vessel is completed, end the last transmission with your call sign and
the word “out”. It is not necessary to end each transmission with your call
sign, just give your call sign at the beginning and end of each contact.
Remember to switch to Channel 16 when not actively communicating on
another channel.
Telephone Calls
You may use your SX 35 DSC transceiver to make telephone calls to per-
sons on shore. To do so requires the services of marine operators who oper-
ate on designated Public Correspondence channels. There are several chan-
nels designated for this type of traffic and to determine the channel being
used in your area, ask someone with local knowledge, contact a Harbor
Master or other marine authority.
SX 35 DSC
9
Call the marine operator and identify yourself with your vessel’s name.
Normally you contact a marine operator on their working channel rather
than making initial contact on Channel 16. The marine operator will ask for
your intentions and establish a payment method for the call (collect, credit
card, etc.). When arrangements are complete, your radio communication
will be patched into the telephone line. In conversing with a person on the
phone it is important to use normal radio communication procedures. You
should say “over” and release the PTT button at the end of each transmis-
sion. Both parties cannot speak simultaneously as on normal telephone calls.
Usually there is a fee for marine operator services which is charged in addi-
tion to any other charges associated with the call.
Prohibited Communication
The following communications are prohibited by regulations and violators
are subject to penalties.
•
•
•
•
•
False distress or emergency messages (including false DSC distress).
Messages to “any vessel” except in emergencies and radio tests.
Messages to or from a vessel on land.
Transmission while on land.
Obscene, indecent, or profane language.
10
SX 35 DSC
INSTALLATION
Transceiver
Your SX 35 DSC Transceiver is designed to withstand the rigors of the ma-
rine environment. However, selecting a mounting location affording some
protection from the elements will prolong the life of connectors, controls
and the liquid crystal display (LCD).
Select a location within easy reach and view of the operator and away from
your vessel’s compass. Locate the microphone to avoid entanglement with
steering or engine controls, both when in use and when stowed. Also, con-
sider routing of antenna, power and NMEA interface cables. Mount the
transceiver securely to a solid surface.
Antenna
Proper installation of a quality VHF antenna is very important to reliable
radio communication. A good quality unity gain antenna is recommended
for maximum range performance. In general, antennas should be located
as high as practical and separated as much as possible from other antennas
and structures. The minimum distance to other objects is 1 meter. Route
the antenna cable away from other electronic equipment and do not bundle
the antenna or power cable with other wiring, especially transducer cables
for depth sounders and fish finders. For cables longer than 10 meters, RG-
8/U coaxial cable must be used. Mount the antenna and install the
connector(s) in accordance with manufacturers instructions. Connect the
antenna cable to the RF output connector on the rear panel of the trans-
ceiver.
Power Connection
CAUTION
Reverse polarity connections can damage your transceiver
The power cable for you transceiver must be connected to the ships main
power buss. Use the 6.3 Amp in-line fuse provided. Connect the Red wire
to the positive (+) terminal and the Black wire to the negative (—) terminal.
Connect the barrel terminals on the power cable to the matching color wires
and terminals extending from the rear panel of the transceiver.
SX 35 DSC
11
NMEA Cable
In order for the position reporting features of your SX 35 DSC transceiver to
function, an operating GPS navigation receiver must be connected to your
transceiver. The supplied data cable plugs into the 8 pin connector on the
transceiver’s rear panel and the other end connects to the NMEA data out-
put from your GPS navigation receiver. Your GPS must output the $GPRMC
NMEA data sentence. Refer to your navigation receiver manual for infor-
mation about its NMEA output settings and connections.
External Speaker Connection
Provision for connecting and external speaker is provided on the rear panel.
Use an 8 Ohm speaker rated for at least 3 Watts and suitable for the environ-
ment at the chosen location.
Rear Panel Connectors
Data Connector
External Speaker Connector
(Rear Panel)
(Rear Panel)
1
2
3
4
NMEA Rx (+) Brown
NMEA Rx (–) Red
NMEA Tx (+) Orange
Ground/Tx (–) Shield
3.5 mm Phone plug
1
7
8
4
Tip
Audio Out (+)
Body Audio Out (–)
5
6
7
8
Clock
Reset
PDI
Green
Blue
Gray
PDO
Purple
Pins 3 & 4 reserved for DSC/PC printer interface
Pins 5~8 reserved for Flash programmer
Antenna Connector
The transceiver is fitted with a type SO 239 female connector which mates
with a PL 259 male connector supplied with VHF marine antennas.
12
SX 35 DSC
OPERATION
General
Your SX 35 DSC is an advanced marine VHF communication transceiver
offering the safety and convenience of Digital Selective Calling in addition
to all the useful features found in the best conventional VHF radios.
Display and Controls
The transceiver is operated using the front panel controls, the keypad, the
Push To Talk (PTT) button and a keypad on the microphone. The 4-line
LCD displays the current operating status, menus for selecting functions,
and settings for optional features. The microphone has a keypad for chang-
ing channels and selecting functions.
Internal Speaker
LCD Display
Channel/data Selector
SELECT
VOL
SQ
MENU
HI/LO
SCAN
END
16
DISTRESS
LIFT HERE
EXIT
SX 35
DSC
ENT
MEM
CALL
OFF
Microphone
Cable Entry
Emergency Button
Under Cover
Keypad
Squelch Control
Volume Control
SX 35 DSC
Frequency Bank
Annunciators
USA INT CAN
4 lines, 11 characters each
for alphanumeric information
Channel
Number
Liquid Crystal Display
SX 35 DSC
13
Basic Operation
Power On/Off
Power to the transceiver is controlled with the VOLume knob. When the
VOL knob is in the full CCW position the unit is turned Off.
To turn the transceiver On:
•
Rotate the VOL knob CW until it clicks over the detent. The LCD back-
light illuminates and the Power-On screen appears.
INT
SX 35 DSC
CODE 000.00
Power-On Screen
After approximately two seconds, the Normal Communication screen ap-
pears in the display.
INT
INT
16 PRI. HI
MEM CHANNEL
N 28°04.814
W 83°42.169
16 PRI. HI
MEM CHANNEL
––°––.–––
––°––.–––
Normal Com Screen
with GPS Connected
Normal Com Screen
w/o GPS Connected
To turn the transceiver Off:
•
Rotate the VOL knob CCW until it clicks over the detent to the OFF
position.
Volume and Squelch
The VOLume and SQuelch controls have concentric knobs. The outer ring
knob controls squelch and the inner knob controls volume. They are inde-
pendent controls but work together to control audio output from the speaker.
The volume control sets the loudness of sound from the speaker and the
squelch control is used to mute background noise when no received signals
are present.
14
SX 35 DSC
To properly set the VOL and SQ controls:
•
•
•
Rotate the SQ control fully CCW.
Rotate the VOL control CW until background noise is plainly heard.
Slowly rotate the SQ control CW until the noise is muted (squelched).
Then adjust the control slightly more CW (approximately 1/8 turn). Use
care not to set the SQ control more CW than necessary or weak signals
may not be heard.
Some channels exhibit more background noise than others, so it may be
necessary to readjust the squelch setting when changing channels or when
scanning.
Channel Selection
When the transceiver is turned On, the Primary Calling Channel (channel
16) is selected.
There are three ways to change channels:
•
Rotate the SELECT knob, press and hold the
or
keys, or di-
EXIT
ENT
rectly enter the channel number using the numeric keys on the micro-
phone. The and keys will always change channels except when
ENT
EXIT
being used to enter or edit a directory page.
Channel Banks
Your SX 35 DSC is designed for use with the International VHF marine
channel frequencies plus authorized local channel frequencies. Only au-
thorized dealers can program other approved country channels, where spe-
cifically allowed by government regulations, by using the 8 pin com con-
nector.
Keypad, Transceiver
A tone is emitted each time a key is pressed. A three beep error tone is
emitted when a key is not allowed. Some functions require a key to be
pressed and held. After the hold period times out, a second tone is emitted
as the function is entered. The basic purpose for each key follows. Detailed
usage of keys is described in operating procedures for the transceivers vari-
ous functions.
SX 35 DSC
15
MENU Opens menus to select optional settings to personalize your
transceiver’s operation.
HI/LO
Use to toggle transmitter power between 25 watts and 1 watt out-
put. Certain channels are restricted to 1 watt maximum power and
will cause the error beep if the HI/LO key is pressed.
END
Cancels DSC calls and Emergency/Distress calls.
16
Selects the Primary Calling Channel 16 or the last channel used. Also,
cancels DSC and Emergency/Distress calls.
ENT
SCAN
MEM
Used to complete editing or selection of options from menus. Use
to delete channels in All Scan function.
Can be used alone or with the MEM key to select Priority Scan,
Memory Scan or All Scan.
Stores channels in the scan memory bank, and when used with the
SCAN key, starts Memory Scan.
CALL Initiates DSC operation screens.
Keypad, Microphone
The microphone keypad is used to change channels by directly entering the
WXYZ
actual channel number with the
through
keys. The
or
ENT EXIT
0
9
keys step or scroll to a new channel. The microphone keys are used to enter
alphanumeric characters and symbols shown in the following chart.
Microphone Keys
ABC DEF GHI JKL MNO PQRS TUV WXYZ
0
1
2
3
4
5
6
7
8
9
Alphanumeric Character Sequence
0
1
-
,
.
/
A
B
C
?
D
E
F
!
G
H
I
:
4
J
K
L
#
5
M
N
O
'
P
Q
R
S
7
T
U
V
&
8
W
X
Y
Z
Space
(
)
%
2
3
6
9
16
SX 35 DSC
OPERATING PROCEDURES
Primary Calling Channel
VHF Channel 16 (156.8 MHz) is the Distress Safety and Primary Calling
Channel. All vessels, not actively engaged in communication, are required
to maintain a listening watch on Channel 16.
Transmitting
The transmitter is activated, for normal voice communications, by pressing
the Push To Talk (PTT) button on the microphone. Always listen for mo-
ment on a channel before transmitting. If the channel is busy, do not trans-
mit until the channel is clear. For DSC calling and Distress calls, the trans-
mitter is activated automatically during the appropriate operating proce-
dure. After DSC contact is established, proceed as in normal voice commu-
nication. Continuous transmitter operation is limited to five minutes and
the transmitter will automatically stop.
To establish normal voice communication:
16
•
Press the
key to select the Primary Calling Channel. The Pri-
mary Calling Channel is 16. The Primary Calling Channel number ap-
pears in the upper left corner of the display.
•
•
Listen on the Primary Calling Channel to make sure the channel is clear.
Press the PTT button. Speak directly into the microphone in a normal
tone of voice --clearly--distinctly. Say “(name of vessel being called)
THIS IS (your vessel’s name and call sign).”
•
•
Release the PTT button and listen for a reply.
Once contact is made on the Primary Calling Channel, each vessel must
switch to a working channel to continue conversation. Refer to the chan-
nel chart for proper usage.
•
After communication is completed, each vessel must give its call sign
or vessel name and switch to the Primary Calling Channel and resume
listening watch.
SX 35 DSC
17
Working Channel Recall
Rather than using the SELECT knob or microphone keys to change chan-
nels, this feature allows quick switching between the last working channel
and the current primary channel.
To quickly switch between the last working channel and the Primary Call-
ing Channel:
•
Use the SELECT knob or microphone keys to select a working channel,
such as channel 68.
16
•
Press the
key momentarily. The current primary channel num-
ber appears in the channel number display.
•
Press the 16 key again momentarily. The working channel number
appears in the display. Each time the key is pressed, channel selection
toggles between the primary channel and the working channel.
Transmitter Power Setting
The transmitter has two power settings, 25 watts or 1 watt, which are indi-
cated by HI or LO appearing in the upper line of the display. The normal
power setting is HI for all channels where 25 watts is allowed. Use the 1
watt setting for communication with nearby vessels (bridge-to-bridge) or
facilities (drawbridges).
HI/LO
•
Press the
key to toggle transmitter power between 25 watts and
1 watt output.
SPECIAL NOTE
Channels 15 and 17 are restricted to 1 watt maximum power and will
cause the error beep if the HI/LO key is pressed.
Channel Scanning
There are three channel scanning modes; Priority Scan, All Scan and Memory
Scan. In the Priority Scan mode, Channel 16 is checked for activity every 2
seconds, even if, the scan is halted by traffic on a working channel. When
scanning is halted by traffic, the scan pauses while the channel is active.
Scanning resumes, after a brief delay when the channel is clear. If the PTT
is pressed, in reply to a received signal, scanning is cancelled.
18
SX 35 DSC
Priority Scan
The Priority Scan function scans the Primary Calling Channel and the last
selected working channel.
To select Priority Scan:
•
Press the SCAN key. PSCAN appears in the upper line of the display
and the two scanned channel numbers appear alternately in the dis-
play.
INT
INT
PSCAN HI
08Dec12:05P
N 28°04.814
W 83°42.169
PSCAN HI
08Dec12:05P
N 28°04.814
W 83°42.169
Priority Scan Sequence
To exit Priority Scan:
SCAN
16
•
Press the
key or press the
key.
All Scan
The All Scan function scans all channels except channel 70. Channel 70 is
the Digital Selective Calling (DSC) channel. Voice traffic is not permitted
on this channel. If noisy or busy channels interfere with scanning, the inter-
fering channels may be temporarily removed from the scan sequence.
To select All Scan:
SCAN
•
Press and hold the
key for 2 seconds. ALLSCAN appears in the
upper line of the display. The scanned channel numbers appear in se-
quence in the channel number display.
To Exit All Scan:
SCAN
16
•
Press the
key or press the
key.
To delete channels from the scan sequence:
ENT
•
Press and hold the
key while the scan is halted on the offending
channel. Turning the transceiver Off and On, restores all channels to
the scan sequence.
SX 35 DSC
19
Memory Scan
Memory Scan allows the user to create and scan a bank of preferred chan-
nels. Channels may be added to or removed from the memory channel
bank as desired. Memory channels are stored individually and may be de-
leted individually, or the entire bank may be deleted. If the PTT button is
pressed, the transceiver exits scanning and normal communication is re-
sumed.
To create or add channels to the memory channel bank:
•
Press the MEM key. The Memory Scan channel bank appears in lower
two lines of the display. If no channels have been previously added to
the bank, the Primary Calling Channel (16) is displayed. Otherwise, up
to six channel numbers appear. A plus sign (+) at the end of the lower
line indicates more than six channels are stored in the bank. Press the
MEM key again to advance to the next page of channels. The memory
channel bank can hold all usable voice communication channels.
INT
INT
INT
ADD/DELETE
MEM CHANNEL
16
ADD/DELETE
MEM CHANNEL
06 09 16
ADD/DELETE
MEM CHANNEL
72 78
22 67 68 +
Memory Scan Bank Memory Scan Bank Memory Scan Bank
Default Page Page Full Next Page
•
•
Rotate the SELECT knob or microphone keys to select a desired chan-
nel to add to the memory channel bank.
MEM
Press and hold the
key for about two seconds. The selected chan-
nel is stored and the channel number appears in the memory channel
bank. Repeat the select and store process to add more preferred chan-
nels. As each channel is added, the existing channels in the bank shift as
necessary to display the new channel number in the bank.
When in the normal communication mode, as channels are selected,
MEM CHANNEL appears in the second line of the display if the se-
lected channel is stored as a memory channel.
INT
16 PRI. HI
MEM CHANNEL
N 28°04.814
W 83°42.169
Memory Channel Display
20
SX 35 DSC
To remove channels from the memory channel bank:
MEM
•
•
Press the
key. The Memory Scan channels appear in the display.
Rotate the SELECT knob or use microphone keys to select a displayed
channel.
•
Press and hold the MEM key for about two seconds. The selected chan-
nel is deleted and the channel number is removed from the memory
channel bank.
To remove all channels from the memory channel bank:
•
•
Turn the transceiver Off.
MEM
Press and hold the
key while turning the transceiver On. The
memory channel bank is erased except for Channel 16 which remains.
To start Memory Scan:
MEM
•
Press the
display.
key. The Memory Scan channel bank appears in the
SCAN
•
Press the
key. MSCAN appears in the upper line of the display.
The scanned channel numbers appear in sequence in the channel num-
ber display.
Menu Functions
Menus are used to customize optional settings to individual preference. The
multilevel menu system is a list of topics that, when selected individually,
offer options or additional related topics from which to choose. Changes to
menu settings are stored and remain in force until changed again.
To navigate through menus:
•
Press the MENU key. The Main Menu appears in the display. DIREC-
TORY is always the first topic displayed on the Main Menu list.
INT
>DIRECTORY
LAMP
CONTRAST
DATA SET
Main Menu Topics
SX 35 DSC
21
To select a topic in the menu list:
•
Rotate the SELECT knob to move the cursor > to the desired topic.
There are more topics than can be displayed at one time, so the list scrolls
as the cursor is advanced beyond the top or bottom of the list.
INT
MMSID SET
TIME SET
NMEA SET
>DIRECTORY
More Main Menu Topics
•
With the cursor on the desired menu topic, press the ENT key. Op-
tions or edit settings for the topic appear in the display.
•
•
Use the SELECT knob to move the cursor to the desired setting.
Press the ENT key to store the new setting.
If you change your mind:
•
Before pressing the ENT key while in an editing mode, press the MENU
key to backup to the next higher menu level.
To exit the menus and return to communication functions:
16
•
Press the
key. If the ENT key was not pressed to store a new
value, no changes are made.
Main Menu Topics
DIRECTORY
The DSC Calling Directory is a list of names and corresponding MMSID’s
that you enter and store for making DSC calls (32 ID’s maximum). Entries
to the list can be added or edited as necessary to keep your directory cur-
rent.
To add a name and MMSID to the directory:
•
•
Press the MENU key. The DIRECTORY topic appears in the display.
Press the ENT key. If the directory is empty, the screen appears blank
except for the channel number. If previous entries appear, move the
cursor to an empty line. If no empty line is found, the directory is full
and a previous entry must be overwritten.
22
SX 35 DSC
ENT
•
Press the
key. The DIRECTORY NAME/ID screen appears with a
blinking cursor next to the name line.
INT
DIRECTORY
NAME/ID
≥
Name and ID Screen
ENT
•
Press the
or
key to move the cursor to the first character of
ENT
the name line.
SPECIAL NOTE
Characters are entered in the name and ID fields using either the
SELECT knob or the microphone keys.
All letters in the alphabet, a space, and the numbers 0~9, plus punctuation
marks and some symbols may be used. The space character follows Z in the
alphabet when using the SELECT knob. Only numbers are allowed in the
ID field.
The following table shows the characters that may be entered in the name
field using the microphone keys.
Microphone Keys
ABC DEF GHI JKL MNO PQRS TUV WXYZ
0
1
2
3
4
5
6
7
8
9
Alphanumeric Character Sequence
0
1
-
,
.
/
A
B
C
?
D
E
F
!
G
H
I
:
4
J
K
L
#
5
M
N
O
'
P
Q
R
S
7
T
U
V
&
8
W
X
Y
Z
Space
(
)
%
2
3
6
9
Several additional special characters are available when entering the name
using the SELECT knob.
•
Use the SELECT knob or microphone keys to select the desired letter,
number or symbol for the first character.
SX 35 DSC
23
ENT
•
•
If using the SELECT knob, press the
or
key after each char-
ENT
acter is selected to enter the character and advance the cursor to the next
character position.
If using the microphone keys, press the appropriate key repeatedly un-
til the desired character is displayed at the cursor position. Then press
the appropriate key for the next character. The cursor automatically
moves to the new position. When entering the same character in two or
more successive character positions, use the ENT or
keys to ad-
ENT
vance the cursor.
•
•
Use the
key if necessary to backspace the cursor.
EXIT
Up to ten characters are allowed in the name, but only one is required.
Enter enough characters to positively identify the entry.
•
After the last character in the name is selected and entered, press the
ENT
or
key again. The cursor moves to the MMSID line.
ENT
ENT
•
•
•
•
Press the
or
key to move the cursor to the first digit position
ENT
in the MMSID line.
Enter the first number in the MMSID. Only numbers 0~9 are allowed
in the MMSID.
ENT
Press the next microphone number key or press the
the selected digit and move the cursor to the next digit position.
key to store
Continue to select and store digits until the complete MMSID is en-
tered. After the last MMSID digit is entered, the cursor returns to the
name line of the display.
•
If the name and ID are correct for this directory entry, press the MENU
key to save the data and exit. The directory list appears in the display
showing the new entry by name only. The MMSID does not appear in
the directory list.
To edit an existing name or MMSID in the directory:
•
•
Press the MENU key. The DIRECTORY topic appears in the display.
ENT
Press the
key. DSC Calling Directory entries appear in the dis-
play. The directory stores a maximum of 32 entries which are displayed
four at a time.
24
SX 35 DSC
•
•
Use the SELECT knob to move the cursor to the entry name for edit-
ing.
ENT
Press the
key. The DIRECTORY NAME/ID screen appears pre-
senting the name and MMSID for the selected directory entry. The blink-
ing cursor is positioned at the start of the entry’s name.
ENT
•
•
Press the
or
key. The cursor becomes an underline instead
ENT
of a blinking square and moves to the first character position.
Use the SELECT knob to move the underline cursor to the character
position needing change.
ENT
•
•
Press the
or
key. The blinking cursor appears.
ENT
Use the SELECT knob or microphone keys to change the contents of
the character to the new value.
•
When new value is correct, press the ENT key or the
key. If more
or
ENT
characters in the same line need changing, use the ENT or
ENT
EXIT
key to move the blinking cursor to the next desired character. If no
more changes are desired on the same line, use the MENU key to move
the cursor back to the start of the line.
•
When both the name and MMSID are correct, press the MENU key to
save the data and exit to the directory listing.
LAMP
Allows adjustment of illumination for the LCD display, keypad and micro-
phone keypad.
•
•
•
Press the MENU key. Menu topics appear in the display.
Use the SELECT knob to position the cursor on the LAMP topic.
ENT
Press the
display.
key. The BRIGHTNESS adjust screen appears in the
INT
BRIGHTNESS
________
LO
HI
SX 35 DSC
25
Brightness Control
•
•
Use the SELECT knob or microphone keys 0~3 to change the setting.
ENT
Press the
or MENU key to store the setting and exit.
CONTRAST
Allows adjustment of LCD display contrast for best readability in varying
lighting conditions.
•
•
•
Press the MENU key. Menu topics appear in the display.
Use the SELECT knob to position the cursor on the CONTRAST topic.
ENT
Press the
display.
key. The CONTRAST adjust screen appears in the
INT
CONTRAST
_____
LO
HI
Contrast Control
•
•
Use the SELECT knob or microphone keys 0~7 to change the setting.
Press the ENT or MENU key to store the setting and exit.
DATA SET
Provides On/Off control for display of Lat/Lon, Date/Time, Speed/Course,
and Manual Lat/Lon. Also, provides for entry of Manual Lat/Lon coordi-
nates.
•
•
•
Press the MENU key. Menu topics appear in the display.
Use the SELECT knob to position the cursor on the DATA SET topic.
Press the ENT key. The Data Set menu selections appear in the dis-
play.
26
SX 35 DSC
INT
≥LLPOSITION
TIME/DATE
SOG/COG
MANUAL LL
Data Set Selections
Use the SELECT knob or or to select either LLPOSITION,
•
ENT
EXIT
TIME/DATE or SOG/COG. MANUAL LL is described separately.
ENT
•
•
Press the
key. The On/Off option is displayed.
Use the SELECT knob or any microphone key to select either On or
Off.
ENT
•
Press the
key to store the selection and exit to the previous menu.
The MANUAL LL data item has 3 options, On/Off/Set. The Set option is
used to manually enter your approximate Lat/Lon position and time of day
for distress messages if your GPS is not connected or not functioning. If
Manual Lat/Lon is turned On, it overrides your GPS Lat/Lon position. Be
sure Manual Lat/Lon and time of day are correctly entered before turning
the function On. Time of day is entered as your local time in either 12 hour
or 24 hour format. Its is important that your local time offset from Univer-
sal Coordinated Time (UTC) is set correctly. See the TIME SET topic on the
Main Menu.
To set Manual Lat/Lon:
•
•
•
Press the MENU key. Menu topics appear in the display.
Use the SELECT knob to position the cursor on the DATA SET topic.
ENT
Press the
play.
key. The Data Set menu selections appear in the dis-
INT
≥LLPOSITION
TIME/DATE
SOG/COG
MANUAL LL
Data Set Selections
•
Use the SELECT knob or
or
to select MANUAL LL.
EXIT
ENT
SX 35 DSC
27
ENT
•
Press the
key. The MANUAL LL menu appears in the display.
INT
MANUAL LL
ON
OFF
>SET
Manual LL Menu
•
•
Use the SELECT knob to select SET on the menu.
Press the ENT key. The SET LL/TIME screen appears.
INT
SET LL/TIME
≥N ° .
W ° .
: LOC
Manual LL Entry
ENT
•
•
Press the
or
key to place the blinking cursor on the first
ENT
character (N or S) in the Latitude entry line.
Use the key to toggle N or S to select a hemisphere (North or South)
EXIT
designator.
ENT
•
•
Press
or
to move the blinking cursor to the next character in
ENT
the Latitude entry.
Use the SELECT knob or the microphone keys 0~9 to enter the correct
Latitude value in degrees and minutes. When Latitude is complete, the
cursor moves to the Longitude line.
ENT
•
•
•
Press the
or
key to place the blinking cursor on the first
ENT
character (E or W) in the Longitude entry line.
Use the key to toggle E or W to select a hemisphere (East or West)
EXIT
designator.
Press ENT or
to move the blinking cursor to the next character in
ENT
the Longitude entry.
28
SX 35 DSC
•
Use the SELECT knob or the microphone keys 0~9 to enter the correct
Longitude value in degrees and minutes. When Longitude is complete,
the cursor moves to the Time entry line.
•
•
Press ENT or
to move the blinking cursor to the first character in
ENT
the Time entry.
Use the SELECT knob or the microphone keys 0~9 to enter the correct
time of day. LOC appears at the end of the Time line indicating entry
must be local time.
•
Enter your local time in hours and minutes. Use 12 hour AM/PM for-
mat if a or p appear after the minutes characters. The SELECT knob or
the microphone keys 0~9 toggle the a/p setting. If neither a or p appear
in the Time line, enter your local time, hours and minutes, in 24 hour
format.
•
When Lat/Lon and Time values are correct, press the MENU key to
return to the MANUAL LL menu page.
To turn Manual Lat/Lon On of Off:
•
Use the SELECT knob to select either On or Off on the MANUAL LL
page.
•
•
Press the ENT key to store the selection.
16
Press the
key. The Main display appears. If Manual Lat/Lon is
turned On, and manually entered values are stored, the Lat/Lon values
appear in the lower two lines of the display. The M appearing at the end
of the Longitude line indicates that Manual Lat/Lon is turned On. When
Manual Lat/Lon is turned On, the manually entered position overrides
any Lat/Lon position from a navigation receiver.
MMSID SET
Provides for entry of the 9 digit MMSI for your vessel which must be en-
tered in order to make DSC calls. MMSI must be obtained from govern-
ment communication authorities or authorized agents.
CAUTION NOTE
Only three entry attempts are permitted. A warning is displayed after the
third attempt and MMSID entry is blocked. CALL YOUR DEALER FOR
ASSISTANCE.
To enter your MMSI number:
•
Press the MENU key. Menu topics appear in the display.
SX 35 DSC
29
•
•
Use the SELECT knob to position the cursor on the MMSID SET topic.
ENT
Press the
key. The MMSID TYPE menu appears in the display.
INT
MMSID TYPE
≥SHIP ID
GROUP ID
MMSID Type Select
•
•
Use the SELECT knob to select SHIP ID on the menu.
ENT
Press the
key. The MMSID SET screen appears in the display.
INT
MMSID SET
000000000
PRESS ENTER
TO CHANGE.
MMSID Set Screen
ENT
•
•
Press the
tion.
key. The blinking cursor appears at the first digit posi-
Use the SELECT knob or the microphone keys 0~9 to enter your offi-
cial MMSI number.
ENT
•
When the last digit is selected, press the
or
key. 3 to GO
ENT
appears (if this is the first MMSI entry) in the lower line of the display.
ENT
•
•
Press the
or
key again. STORED OK appears briefly in the
ENT
lower line of the display completing the entry.
Press the 16 key to return to the Main display.
Follow the above procedure to enter your Group ID number. Group ID
entry attempts are not limited in number.
TIME SET
Allows selection of either 12 or 24 hour time format and provides entry of
local time offset from Universal Coordinated Time (UTC), sometimes called
Greenwich Mean Time (GMT). UTC is the time at the Prime Meridian, or
zero degrees (0°) Longitude which passes through Greenwich, England.
•
Press the MENU key. Menu topics appear in the display.
30
SX 35 DSC
•
•
Use the SELECT knob to position the cursor on the TIME SET topic.
ENT
Press the
key. The TIME FORMAT menu appears in the display.
INT
TIME FORMAT
>12 HR.
24 HR.
88:88 +
Format Selection
•
•
Use the SELECT knob to select the desired format, either 12 HR or 24
HR.
ENT
Press the
key. The TIME OFFSET menu appears in the display.
INT
TIME OFFSET
>+00.0
88:88
Time Offset Selection
•
•
Use the SELECT knob to set the time difference from the Prime Merid-
ian to your location. If you are West of the Prime Meridian, select a
negative (—) value. If you are East of the Prime Meridian, select a posi-
tive (+) value. Time offset values from 0 to 12 hours plus or minus may
be entered in 1/2 hour increments. Obtain the time offset value from
your GPS navigator.
ENT
When your selection is complete, press the
ting and exit the menu.
key to store the set-
NMEA SET
Allows NMEA sentences from navigation equipment manufactured to ear-
lier versions of the NMEA standard to provide Lat/Lon position coordi-
nates and UTC time.
•
•
•
Press the MENU key. Menu topics appear in the display.
Use the SELECT knob to position the cursor on the NMEA SET topic.
ENT
Press the
display.
key. The NMEA CHECKSUM menu appears in the
SX 35 DSC
31
DSC OPERATION
The Digital Selective Calling (DSC) functions of your SX 35 DSC transceiver
add convenience and safety to your VHF communication capability. DSC
allows you to contact other DSC equipped vessels and shore stations by
selecting their names from your personal call directory, choosing a call type,
and pressing a key. In an emergency, pressing one button will send your
vessel ID and current position to search and rescue (SAR) authorities and
other DSC equipped vessels. Distress calls are covered first. Then, normal
calling procedures are described.
Position reporting requires connection to an operating GPS navigation re-
ceiver or manually entered Lat/Lon coordinates. If data from your GPS is
lost, 3 quick error beeps are sounded and the following warning screen ap-
pears in the display after 23.5 hours.
INT
16 PRI. HI
--Jan88:88
99°99.999
999°99.999
Set Manual Lat/Lon
This warning screen reminds you to manually enter Lat/Lon coordinates.
The old GPS coordinates are used for 23.5 hours if manual coordinates are
not entered. See the MANUAL LL item of the DATA SET topic of the Main
Menu.
MMSID
SPECIAL NOTE
In order to use DSC functions, you must obtain a nine-digit maritime
mobile service identity (MMSI) and program it into your transceiver be-
fore you transmit.
Prior to obtaining an MMSI, you will be asked to provide certain informa-
tion about your vessel and communication equipment. Contact the govern-
ment radio communication authorities of your country for licensing and
MMSI information. It is important that you obtain an MMSI, because Na-
tional Coast Guard authorities use this information to help speed search
and rescue operations.
The procedure for entering your MMSI is described in the MMSID Set topic
of the Operating Procedures section.
32
SX 35 DSC
Sending a Distress Call
To make a distress call:
•
Lift the red protective cover, then press and release the red button. The
distress alert screen appears.
INT
DISTRESS!
≥Undesign-
ated.
HOLD 3 SEC.
Distress Alert Screen
•
If time permits, use the SELECT knob to select the nature of distress.
Otherwise, hold the red button (as soon as the button is pressed again,
an intermittent acoustic alarm is sounded and the distress alert screen
flashes until the DISTRESS is sent automatically, in about 3 seconds).
Before the distress is sent, you may release the red button to reset the
countdown timer. When the distress is sent, the sending distress call
screen appears. The acoustic alarm goes steady-on and remains on un-
til an acknowledgment is received or the acoustic alarm is cancelled.
Nature of Distress
Undesign-
ated.
Fire or
Explosion.
Flooding.
Collision.
Grounding.
Listing or
Capsizing.
Sinking.
Disabled
& Adrift.
Abandoning
Ship.
Piracy
Man
EPRIB
Attack.
Overboard.
Emission.
•
•
After selecting a nature of distress message, press and hold the red but-
ton. The actions above are repeated.
An alarm sounds and the following screen appears as your distress
message is being transmitted.
SX 35 DSC
33
INT
TX
HI
SENDING
DISTRESS!
CALLING.
Sending Distress Call
•
The following screen appears indicating your distress message has been
transmitted.
INT
DISTRESS!
PRESS END
TO CANCEL.
WAITING....
Distress Call Sent
The DSC distress message is automatically sent on channel 70 and your
transceiver is automatically set to Channel 16 in order to listen for, and re-
spond to, voice replies from SAR authorities or other vessels which may
have received your distress call. The alarm will sound every 2 minutes to
remind you that a distress message is active. Unless canceled, the distress
message is automatically retransmitted every 3 1/2 to 4 1/2 minutes.
Re-transmissions of DSC distress calls are canceled automatically when a
DSC acknowledgment is received from an authorized SAR coast station, or
canceled manually by you.
To manually cancel DSC distress retransmissions from your vessel:
END
•
Press the
key. The DISTRESS CANCELED message appears in
the display.
INT
DISTRESS
CANCELED.
Manual Distress Cancel
•
If your DSC distress call is acknowledged (ACK) by a coast station, the
DISTRESS! CANCELED. ACK RECEIVE screen appears in the display.
34
SX 35 DSC
INT
DISTRESS!
CANCELED.
CoastSta ID
ACK RECEIVE
Distress Acknowledged
•
Establish voice contact with the coast station on Channel 16.
Receiving Distress Calls
Your SX 35 DSC transceiver may intercept distress messages sent by an-
other vessel and/or acknowledgments (ACK) sent by a coast station to an-
other vessel in distress. In such cases you should maintain a listening watch
on channel 16 and standby to lend assistance. Your SX 35 DSC does not
automatically reply to, or relay, distress or ACK or relay DSC calls.
Distress sent by another vessel
If your SX 35 DSC transceiver intercepts a distress call from another vessel,
an alarm sounds and the following screen appears in the display.
INT
20:33 UTC
Name or ID of
Vessel in Distress
ID323456789
N 28°33.
02 W 82°50+
Distress Alert, page 1
The screen presents, time of distress, MMSID of the distressed vessel, and
Lat/Lon coordinates. The plus sign (+) indicates there is another page of
information available. If invalid GPS or Time data is received, the Lat/Lon
position shows ‘9’ in all digits and the time shows all ‘8’s.
ENT
•
Press the
key to toggle between page 1 and page 2.
INT
Undesign-
ated.
DISTRESS
02 ALERT +
Distress Alert, page 2
The nature of distress and ALERT call type appear on the second page.
SX 35 DSC
35
Distress ACK sent to another vessel
If your SX 35 DSC transceiver intercepts a distress ACK from a coast sta-
tion, an alarm sounds and the following screen appears in the display.
INT
21:45 UTC
Name or ID of
Coast Station
ID998765432
N 29°06.
03 W 82°50+
Coast Station ACK to other vessel, page 1
The screen presents time of ACK and Lat/Lon coordinates. The plus sign
(+) indicates there is another page of information available.
ENT
•
Press the
key to toggle between page 1 and page 2.
INT
EPRIB
Emission.
ID123456789
03 ACK +
Name or ID of
Vessel in Distress
Coast Station ACK to other vessel, page 2
The distressed vessel’s MMSID and ACK appear on the second page. Main-
tain a listening watch on channel 16 and standby to lend assistance.
Distress Relay from another vessel
If your SX 35 DSC transceiver intercepts a distress relay from another ves-
sel, an alarm sounds and the following screen appears in the display.
INT
Name or ID of
Vessel sending
message
04:16P
ID323456789
N 28°29.
04 W 82°50+
Distress Relay, page 1
The screen displays, local time of distress, the MMSID of the vessel sending
the relay message and Lat/Lon coordinates of the vessel in distress. The
plus sign (+) indicates there is another page of information available.
•
Press the ENT key to toggle between page 1 and page 2.
36
SX 35 DSC
INT
EPRIB
Emission.
ID123456789
04 RELAY +
Name or ID of
Vessel in Distress
Distress Relay, page 2
The distressed vessel’s MMSID and RELAY call type appear on the second
page.
Your vessel does not re-send a distress relay message.
Normal DSC Calls
Your SX 35 DSC can transmit four types of DSC calls; Distress, All Ship’s,
Individual, and Group. Except for Distress, each call type is subdivided
into one or more priorities.
All Ship’s type transmits two priorities: Urgency and Safety.
Individual type transmits one priority: Routine.
Group type transmits one priority: Routine.
A normal DSC call may be originated from your vessel to another DSC
equipped vessel or to a coast station, or you may reply to a DSC call sent by
another vessel or a coast station. Outgoing calls are made either by select-
ing a vessel or station name from your directory or by manually entering
the vessel or station MMSID number.
Replies to any incoming call type can be made directly from the call log.
The call log (LAST CALL) holds thirty two entries and the last call received
is on top of the list. If the call log is full, the oldest entry is lost.
Individual DSC Call
Individual calls can be made to another vessel or to a coast station. It is
important to be able to differentiate between the two. When calling another
vessel, the communication channel is specified in the call by the calling ves-
sel. If communicating with a coast station, it is the coast station in its ac-
knowledgment, that determines the channel. Your SX 35 DSC transceiver
transmits Routine individual calls, but receives both Routine and Safety in-
dividual calls.
Directory Call
Directory calls are made by selecting a vessel or station name from the call-
ing directory. The calling directory holds thirty two of your previously
entered names that you routinely contact during normal boating activities.
SX 35 DSC
37
To make a directory call:
CALL
•
•
Press the
key. The DSC calling menu appears in the display.
Use the SELECT knob to select the DIRECTORY topic.
INT
LAST CALL
>DIRECTORY
ALL SHIP'S
INDIVIDUAL
DSC Directory
CALL
•
•
Press the
key. The directory list appears in the display.
Use the SELECT knob to select the desired vessel or station name.
Note: The MMSID’s for each entry do not appear in the list.
•
•
Use the microphone keys to select a working channel.
CALL
Press the
play.
key. The INDIVIDUAL call screen appears in the dis-
INT
INDIVIDUAL
vessel name
>ROUTINE
PRESS CALL.
Individual Call Screen
CALL
•
•
Press the
key to send the call. DSC calls are made on channel 70.
If you observe the display closely, you will see the channel number
change to channel 70 momentarily and then revert to the selected work-
ing channel.
While waiting for acknowledgment from the called vessel,
WAITING . . . . appears in the lower line of the display.
INT
INDIVIDUAL
vessel name
>ROUTINE
WAITING....
Waiting For Acknowledge
•
When the called vessel acknowledges your call, an alert sounds and
ACK RECEIVE appears in the lower line of the display.
38
SX 35 DSC
INT
16 PRI. HI
vessel name
>ROUTINE
ACK RECEIVE
Acknowledge Received
•
•
Press the PTT button on the microphone to silence the alert and begin
voice communication with the called vessel.
END
The
key may be used to exit the DSC calling procedure at any
time prior to sending the call.
Manual Call
The manual call procedure is used to make a DSC call to a vessel or station
that is not listed in your calling directory. However, you must know the
MMSID for the vessel or station.
To make a manual DSC call:
•
•
Press the CALL key. The DSC calling menu appears in the display.
Use the SELECT knob to select the INDIVIDUAL topic on the menu.
INT
LAST CALL
DIRECTORY
ALL SHIP'S
>INDIVIDUAL
DSC Manual Call
CALL
•
Press the
key. The SET CHannel/SET MMSID screen appears
in the display.
INT
≥SET CH
06 08 72 77
SET MMSID
Set Channel/Set MMSID
•
Use the SELECT knob or microphone keys to select a working chan-
nel. Four channel numbers appear in the display as suggested channels
authorized for this type of call. Other channels may be used if autho-
rized in your area.
SX 35 DSC
39
ENT
•
•
•
Press the
key. The blinking cursor moves to the first digit in the
MMSID entry field. The last used manual MMSID is displayed.
Use the SELECT knob or microphone keys to change the MMSID for
the vessel or station to call.
CALL
When the MMSID is correct, press the
key to send the call. DSC
calls are made on channel 70. If you observe the display closely, you
will see the channel number change to channel 70 momentarily and then
revert to the selected working channel.
•
While waiting for acknowledgment from the called vessel,
WAITING . . . . appears in the lower line of the display.
INT
SET CH
06 08 72 77
SET MMSID
WAITING....
Waiting For Acknowledge
•
When the called vessel acknowledges your call, an alert sounds and
ACK RECEIVE appears in the lower line of the display.
INT
16 PRI. HI
06 08 72 77
SET MMSID
ACK RECEIVE
Acknowledge Received
•
•
Press the PTT button on the microphone to silence the alert and begin
voice communication with the called vessel.
The END key may be used to exit the DSC calling procedure at any
time prior to sending the call.
All Ships Call
The All Ship’s call allows you to send an Urgent or Safety DSC call to nearby
vessels without having to know their MMSID numbers. The All Ship’s call
may be used in situations that are serious but do not warrant a distress call,
and voice communication attempts have failed.
To send an All Ship’s call:
CALL
•
Press the
key. The call menu appears in the display.
40
SX 35 DSC
•
•
Use the SELECT knob to select the ALL SHIP’S topic.
INT
LAST CALL
DIRECTORY
>ALL SHIP'S
INDIVIDUAL
DSC All Ship’s Call
CALL
Press the
key. The CALL TYPE menu appears in the display.
INT
CALL TYPE
≥URGENT
SAFETY
PRESS CALL.
DSC Call Type
•
•
Use the SELECT knob to select either URGENT or SAFETY.
Press the CALL key. The Call Type Verification screen appears in the
display.
INT
SEND URGENT
CALL?
PRESS CALL.
Call Type Verification
•
•
Call type must be verified.
Press the CALL key to send the call. The ALL SHIP’S WAITING . . . .
screen appears in the display. Either URGENT or SAFETY appear to
indicate priority of the call.
INT
ALL SHIP'S
priority
WAITING....
Waiting For Voice Reply
SX 35 DSC
41
•
Your transceiver is automatically set to Channel 16. Listen for voice
replies from vessels which have received your call. There is no DSC
ACK reply to confirm that your call was received.
•
•
Use the PTT button to continue voice communication. The Normal
Communication screen appears in the display.
END
If there is no response to your call, press the
Communication screen appears in the display.
key. The Normal
Group Call
Your can arrange with other vessels to use a group MMSID so that any
vessel in a group can contact all other vessels in the same group with a
single DSC call.
Your group MMSID is stored in the same manner as your ship MMSID.
Only one group MMSID is stored at a time, but group MMSID’s can be
changed as often as desired, allowing participation in more than one group.
To send a DSC group call:
CALL
•
•
Press the
key. The call menu appears in the display.
Use the SELECT knob to select the GROUP CALL topic.
INT
DIRECTORY
ALL SHIP'S
INDIVIDUAL
>GROUP CALL
DSC Group Call
CALL
•
Press the
key. The SET CHannel menu appears in the display.
The current group MMSID appears in the lower line of the display.
INT
≥SET CH
06 08 72 77
GROUP MMSID
087654321
Set Channel
•
Use the SELECT knob or the microphone keys to select a working chan-
nel. Four channel numbers appear in the display as suggested channels
authorized for this type of call. Other channels may be used if autho-
rized in your area.
42
SX 35 DSC
CALL
•
•
Press the
key. The call is sent and WAITING . . . . appears in the
lower line of the display.
Your transceiver is automatically set to the previously set working chan-
nel. Listen for voice replies from vessels which have received your call.
There is no DSC ACK reply to confirm that your call was received.
•
•
Use the PTT button to continue voice communication. The Normal
Communication screen appears in the display.
If there is no response to your call, press the END key. The Normal
Communication screen appears in the display.
Receiving DSC Calls
Your SX 35 DSC can receive four types of DSC calls; Distress, All Ship’s,
Individual, and Group. Except for Distress, each call type is subdivided
into one or more priorities.
All Ship’s type receives the following priorities: Distress ACK, Distress Re-
lay, Urgency, and Safety.
Individual type receives the following priorities: Safety and Routine.
Group type receives one priority: Routine.
When your SX 35 DSC receives a DSC call from another vessel or a coast
station, an alert sounds and a Call Received screen appears in the display.
The Call Received screen identifies the time of a call, the caller, the type and
the priority of a call. Also, a number appears in the screen indicating the
number of calls in the log. The call log holds thirty two entries.
Individual Call Received
INT
09:52P
name or ID
INDIVIDUAL
16 ROUTINE
Individual Routine
If the calling vessel or station is listed in your DSC calling directory, the
vessel or station name, as it is listed, appears in the display. If the caller is
not listed in your directory, the caller’s MMSID appears in the display. Also,
your transceiver is set to a working channel selected by the caller.
SX 35 DSC
43
For Individual Routine calls the following screen alternates with the Call
Received screen.
INT
09:53P
name or ID
PRESS CALL
16 TO ACK!
Routine ACK Screen
CALL
•
•
•
Press the
key to acknowledge the call. The sender should re-
spond to your ACK with voice communication. If not, you may initiate
voice communication.
To silence the alert without sending ACK, press the END key. The
call is interrupted and the Normal Communication screen appears in
the display.
ENT
To silence the alert and send ACK later, press the
key. The ACK
screen continues to alternate with the Call Received screen in the dis-
play.
For Individual Safety calls, the following screen appears in the display.
INT
04:23P
name or ID
INDIVIDUAL
17 SAFETY
Individual Safety
END
•
•
Press the
key to silence the alert sound and listen for a voice
announcement. There is no DSC ACK for Safety calls.
Press the PTT button to answer the call with voice communication on
the working channel selected by the caller.
44
SX 35 DSC
Last Call Received
Replies to incoming calls are made using the call log. The call log holds
thirty two entries and the last call received is on top of the list. When the
thirty third call is received, the oldest entry is lost. Making DSC calls from
the call log is the like making calls from the DSC calling directory.
To instantly reply to the last call received or any log entry:
•
Press the CALL key. The call menu appears in the display with the
cursor indicating LAST CALL.
INT
>LAST CALL
DIRECTORY
ALL SHIP'S
INDIVIDUAL
DSC Call Menu
•
Press the CALL key again. The most recent call in the call log appears
in the screen.
INT
06:03P
name or ID
call type
18 priority
Last Call
•
•
Observe the type and priority of the last call logged.
Use the SELECT knob to select the entry to call.
CALL
•
Press the
key. An Individual Routine call is transmitted regard-
less of the type and priority of the last call logged.
Proceed in the same manner as with normal DSC calls.
•
SX 35 DSC
45
All Ships Call Received
An All Ship’s call is received from other vessels or coast stations within
VHF range of the transmitter. All Ship’s calls present Urgent or Safety in-
formation important to all vessels in the area.
When an All Ship’s call is received, an alert sounds and one of the following
screens appear in the display.
INT
INT
06:14P
12:34P
name or ID
ALL SHIP'S
19 URGENT
name or ID
ALL SHIP'S
20 SAFETY
All Ship’s Urgent
All Ship’s Safety
If the calling vessel or station is listed in your DSC calling directory, the
vessel or station name, as it is listed, appears in the display. If the caller is
not listed in your directory, the caller’s MMSID appears in the display. Also,
your transceiver is set to Channel 16 by the caller.
•
Press the END key to silence the alert sound and listen for a voice
announcement. There is no DSC ACK for All Ship’s calls.
•
Press the PTT button if it is necessary to answer the call with voice
communication. Use the channel selected by the caller.
Group Call Received
A group call is received when anyone in your prearranged group makes a
group call.
INT
07:16P
name or ID
GROUP
21 ROUTINE
Group Call Received
END
•
•
Press the
key to silence the alert sound and listen for a voice
announcement. There is no DSC ACK for Group calls.
Press the PTT button to answer the call with voice communication on
the working channel selected by the caller.
46
SX 35 DSC
REFERENCE
Maintenance
The SX 35 DSC VHF transceiver is produced with proven processes and
current solid state technology. With reasonable care, your SX 35 DSC will
have a long useful life.
The following precautions will prevent damage to the transceiver.
•
•
•
Never press the PTT button unless an antenna or proper dummy load
is connected to the antenna jack.
Do not operate the transceiver if the power source is not within the
specified range of 11 to 16 Vdc.
Replace the antenna and/or coaxial cable if damaged in any way or
severely weathered.
•
•
•
Avoid continuous direct sunlight on the LCD.
Avoid overextending the microphone cable.
Do not use solvents or harsh chemicals to clean the microphone, case-
work or LCD display.
Special Functions
Simulator Mode
Provides simulated GPS data for demonstration of realistic displays. Trans-
mitter and DSC functions are totally disabled.
•
Press and hold the MENU key while turning power On.
Clear Memory Channels
Clears the channel bank for the Memory Scan function.
MEM
•
Press and hold the
New Microphone
Initializes the keypad when a new microphone is installed.
key while turning power On.
•
Press and hold the
On.
key on the microphone while turning power
1
Printer Operation
Initializes the Tx port for 4800 baud PC/printer interface.
•
Press and hold the 16 key while turning power On.
SX 35 DSC
47
Troubleshooting
Troubleshooting Chart
Symptom
Probable Cause
Corrective Action
Transceiver won't turn
On.
No dc voltage, blown
fuse, faulty wiring.
Rotate VOL knob CW,
check buss voltage,
replace fuse (6.3 Amp),
check power cable and
connections.
Buzzing sound from
speaker with engine
running.
Ignition or charging
system noise.
Reroute dc power cable,
install noise filter on
alternator and dc power
cable, use resistive spark
plug wires.
No sound from speaker. Squelch control set too
Set SQ control full CCW,
high, volume control set set VOL CW.
too low.
Channel blocked by
stuck mic button.
Select a different
channel. Look for TX
annunciator in display.
Faulty external speaker
or cable.
Unplug external speaker
cable.
Reports of weak transmit Antenna.
signals even when using
HI power settings.
Have a technician test
transmitter output
power and antenna
VSWR.
Coaxial cable faulty.
Inspect antenna cable
carefully for nicks. Wet
coax absorbs transmitter
power.
Latitude and longitude
coordinates are not
displayed.
Lat/Lon position display Use Menu\DataSet\
not turned On.
LLposition, to turn On.
GPS cable faulty or
disconnected.
Check cable and
connections.
GPS not operating or
position is invalid.
Make sure GPS is
functioning and output
format is NMEA 0183
with RMC sentence
selected.
48
SX 35 DSC
Specifications
SX DSC 35 Technical Specifications
GENERAL
Compliance:
Meets EU specification EN301-025 V1.1.2
(August 2000), Radio Regulations Appen-
dix 18, and DSC Class D/SC-101.
Number of Channels:
All available INT’L (per Appendix 18 plus
M & M2 for UK). Externally FLASH pro-
grammable for various Country Require-
ments.
Vdc Input:
13.6 Vdc with isolated chassis.
Size (W x H x D):
153mm x 61mm x 158mm (6.02” x 2.4” x
6.22”). Heat sink is included. Not bracket.
Weight:
1.088Kg (2.4 lbs) with MIC.
CFR-46
Waterproofness:
Antenna:
50 OHM impedance with SO239 Connec-
tor. Transmitter operates 5 minutes into
OPEN or SHORT.
Temperature Range:
Construction:
-20 Degrees C to +50 Degrees C
UV Stable Case with Tactile-Feel colored
silicon rubber key switches Backlighted
rubber keypad. Die Cast Rear Heat sink.
LCD Display:
4 Lines with 11 characters each and BOLD
channel number display with 3 discrete an-
nunciators. Silver background with dark
Black letters and Bright Orange display
backlighting. LCD has dimmable ORANGE
display/keypad backlighting. Contrast
control provides best viewing angle. View-
ing area is 63.3mm x 23mm (2.49” x .90”).
Speaker:
Sealed Water Resistant Polypropylene.
Microphone:
Special styled MIC with 12 Alpha Numeric
keys. MIC editing works simultaneously
with Code Wheel and allows discrete chan-
nel entry.
Channel/Selection Changing: 2 bit Code Wheel.
Squelch/Volume Control: Integrated, includes Power On/Off control.
SX 35 DSC
49
External Connections:
Watch Receiver:
Jack for External Speaker & 8 pin COM con-
nector.
Separate CH70 watch receiver included.
Decoding performance is less than 10-2 Bit
error rate with 0dBµV input signal level.
CPU:
High-speed 8 bit RISC microprocessor with
features/channels externally FLASH pro-
grammable.
DSC Call Types:
See chart below:
Format Specifier
Category
First Telecommand
Symbol number
Receive Transmit
Distress - (112)
F3E/G3E Simplex - (100)
Distress ACK - (110)
X
X
X
X
X
X
X
X
X
X
All Ship’s - (116)
All Ship’s - (116)
All Ship’s - (116)
All Ship’s - (116)
Distress - (112)
Distress - (112)
Urgency - (110)
Safety - (108)
Distress RELAY - (112)
F3E/G3E Simplex - (100)
F3E/G3E Simplex - (100)
F3E/G3E Simplex - (100)
F3E/G3E Simplex - (100)
F3E/G3E Simplex - (100)
F3E/G3E Simplex - (100)
X
X
Individual - (120) Urgency - (110)
Individual - (120) Safety - (108)
Individual - (120) Routine - (100)
X
X
Group - (114)
Routine - (100)
2nd Telecommand
Transmit & Receive (126) – No Information.
DSC Distress Key:
Red & Covered. Plastic Cover is hinged to
prevent loss. Key is backlighted full time.
Hold down 3 seconds – countdown timer
is displayed.
DSC Call Log:
DSC Directory:
32 Entries. Instant call back any Log Entry
with Individual Routine call.
Caller’s Name is displayed if MMSID
matches to Directory Entry.
32 Entry list with scrolling and Auto Sort-
ing. Entries can be edited to Line/Charac-
ter position.
MMSID:
Own Ship’s & Group are stored in nonvola-
tile memory.
Memory Scan Channels:
Unlimited with instant editing and can be
cleared on Power-up. The Memory Chan-
nel list is presented in a Page Mode format
with instant ADD/DELETE function.
50
SX 35 DSC
Alarm Tones:
3 different tone sequences are provided.
Phased Locked Loop (PLL).
Frequency Control Method:
Frequency Stability:
+/-5 PPM for both the Transmitter/Re-
ceiver.
GPS/NMEA:
GPS Display:
$GPRMC sentence is decoded. NMEA
Checksum can be turned Off/On.
Data is selected from following:
• Date & local time & LL Position (3
digit for seconds).
• SOG/COG& LL Position (3 digit for
seconds).
• Time & Manual LL Position (no sec-
onds).
• No Data.
Data Output:
DSC call formats can be sent to PC & printer
using 4800 baud and standard Terminal
program.
Special Functions:
Three scanning Modes:
• All Scan
• Memory Scan (nonvolatile)
• Priority Scan
Noisy channels can be temporarily deleted
in All Scan Mode.
Built-in GPS Simulator.
Automatic Auto Calendar for clock.
Manual Entry of LL & Time for DSC Emer-
gency Calling.
Local Time Offset values can be entered in
30 minute intervals.
Instant Access to “Last DSC Call”.
SX 35 DSC
51
TRANSMITTER
Power Output:
Tx Current:
25 Watts or 1 Watt switchable.
6 Amps @ 25W Tx.
1 Amp @ 1W Tx.
Modulation:
G3E for Voice, G3B for DSC Data.
156.025Mhz - 157.425Mhz @ 25Khz spacing.
Transmit Frequencies:
Spurious/Harmonic Emissions:Less than 0.25µW.
Modulation Distortion:
Less than 4% @ 1Khz for +/-3Khz devia-
tion.
Modulation Limiter:
Frequency Response:
+/-5Khz deviation with 100% modulation.
Matches +6dB/Octave slope within
+1/-3dB from 300 to 2500Hz.
18dB/Octave beyond 3000Hz. Audio Low
Pass Filter is included.
Hum & Noise:
RECEIVER
Less than -40dB.
Receive Frequencies:
Sensitivity:
156.025Mhz - 162.025Mhz @ 25Khz spacing.
0.5µV or less for 20dB SINAD
Squelch Range:
Audio Output Power:
0.25µV to 0.80µV @ full squelch
3.0W minimum @ 4 Ohms with less than
10% distortion.
External speaker:
Internal speaker is Off when external
speaker is On.
Receiver Current:
200mA in Standby ( 2 receivers)
+/-7 kHz minimum.
Modulation Acceptance:
Adjacent Channel Selectivity: Greater than -70dB for +/-25Khz.
Image Rejection:
Greater than -70dB.
Intermodulation Spurious
Response:
Greater than -70dB.
Noise Level:
Greater than -40dB unsquelched.
Audio Frequency Response:
Matches -6dB/Octave slope within
+1/-3dB from 300 to 2500Hz, 18dB/Octave
over 3000Hz.
52
SX 35 DSC
Channel Assignments
The Channel Assignment tables on the following pages list the channel num-
ber, frequency and usage for Marine VHF communication as published by
the Radiocommunications Agency.
Depending upon your selection, certain channels may be either simplex
(single frequency) or duplex (two frequency) as indicated in the tables.
On simplex channels, your transceiver transmits and receives on the same
frequency. On duplex channels, your transceiver transmits on one
frequency and receives on another frequency. You may communicate
with shore stations on both simplex and duplex channels, but because of
the frequency offset, you cannot communicate with other vessels on a
duplex channel.
Channel 16 is the International Distress, Safety and Calling channel.
All vessels equipped with VHF transceivers are required to monitor
channel 16.
SX 35 DSC
53
Use of International Mobile Maritime VHF Channels
Table 1 of 2
Transmitting
Frequencies
(MHz)
Port Operations
Public
Corre-
spondence
Channel
Designators
Inter-
ship
Notes
Ship
Stations
Coast
Stations
Single
Frequency
Two
Frequency
60
156.025
156.050
156.075
156.100
156.125
156.150
160.625
160.650
160.675
160.700
160.725
160.750
X
X
X
X
X
X
X
01
61
02
62
03
X
X
X
X
X
63
156.175
156.200
156.225
156.250
156.275
156.300
156.325
156.350
156.375
156.400
156.425
156.450
156.475
156.500
160.775
160.800
160.825
160.850
160.875
X
X
X
X
X
X
X
X
X
X
04
64
05
65
06
66
07
67
08
68
09
69
10
1
X
160.925
160.950
156.375
X
X
X
X
X
X
X
HMCG SAR
156.425
156.450
156.475
156.500
X
X
X
X
X
X
X
5
6
Oil Pollution
Digital Selective Calling for Distress,
Safety and Calling
70
156.525
156.525
11
71
12
72
13
73
14
74
156.550
156.575
156.600
156.625
156.650
156.675
156.700
156.725
156.550
156.575
156.600
X
X
X
X
X
X
7
5
156.650
156.675
156.700
156.725
X
X
X
X
Also, on-board
commuication
15
2
4
156.750
156.775
156.750
X
X
75
54
SX 35 DSC
Use of International Mobile Maritime VHF Channels
Table 2 of 2
Transmitting
Frequencies
(MHz)
Port Operations
Public
Corre-
spondence
Channel
Designators
Inter-
ship
Notes
Ship
Stations
Coast
Stations
Single
Frequency
Two
Frequency
16
156.800
156.825
156.800
DISTRESS, SAFETY and CALLING
X
76
4
2
Also, on-board
communication
17
156.850
156.850
X
X
X
77
78
79
156.875
156.900
156.925
156.950
156.975
157.000
18
19
20
161.500
161.525
161.550
161.575
161.600
X
X
X
X
X
X
X
X
X
X
X
Also, Marinas etc.
UK only
80
157.025
161.625
X
X
21
22
23
24
25
26
27
28
157.050
157.075
157.100
157.125
157.150
157.175
157.200
157.225
157.250
157.275
157.300
157.325
157.350
157.375
157.400
157.425
157.850
161.425
161.975
162.025
161.650
161.675
161.700
161.725
161.750
161.775
161.800
161.825
161.850
161.875
161.900
161.925
161.950
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
81
82
83
84
85
86
87
88
X
X
X
X
X
X
X
162.000
X
X
8
8
3
3
157.850
161.425
161.975
162.025
United Kingdom Marina Channel
M
United Kingdom Marina Channel M2
AIS
AIS
SX 35 DSC
55
Use of International Mobile Maritime VHF Channels
Notes:
Notes
1. Channel 06 may also be used for communications between ship
stations and aircraft engaged in coordinated search and rescue
operations. Ship stations shall avoid harmful interference to such
communications on channel 06 as well as to communications be-
tween aircraft stations, ice breakers and assisted ships during ice
seasons.
2. Channels 15 and 17 may also be used for on-board communica-
tions provided the effective radiated power does not exceed 1
Watt.
3. These channels (AIS 1 and AIS 2) will be used for an automatic
ship identification and surveillance system capable of providing
worldwide operation on the high seas, unless other frequencies
are designated on a regional basis for this purpose.
4. The use of these channels (75 and 76) should be restricted to navi-
gation related communication only, and all precautions should
be taken to avoid harmful interference to channel 16, e.g. by lim-
iting power to 1 Watt or by means of geographical location. These
channels are not available in the SX-35 DSC.
5. As of 01 July 1999, these channel (10 or 73 depending upon loca-
tion) are also used for the broadcast of Marine Safety Information
by the Maritime & Coastguard Agency in the UK only.
6. Channel 70 is to be used exclusively for digital selective calling
for distress, safety and calling.
7. Channel 13 is designated for use on a worldwide basis as a navi-
gation safety communication channel, primarily for intership navi-
gation safety communications.
8. Channels n0 and n2 are UK channels and should only be used in
UK territorial waters. Their on-board use is covered by a Ship
Radio License. However, equipment that is only capable of oper-
ating on these frequencies is usually licensed under a Coastal Sta-
tion Radio License and it is not necessary for the operator to hold
an operator’s certificate.
56
SX 35 DSC
|