Silva S10 DSC User manual

Operation Manual S10

Chapter Description Page

1 Introduction
2 Panel Description

3
4

2.1 Front Panel 4

2.2 Back Panel 5

2.3 LCD Display 6

3 Fist Microphone/Controller

7

3.1 Soft Keypad (0 – 9) 7

4 General Operation

9

4.1 Dual Watch 9

4.2 Full Scan 10

4.3 Memory Scan 10

4.4 High / Low RF Output Power Selection 10

4.5 Dimming Control 11

4.6 Speaker Control 11

4.7 Squelch Control 11

4.8 Volume Control 12

4.9 Channel 16 12

4.10 Channel Selection 13

4.11 Stored Channel Selection 13

5 Receiving A DSC Call

14

5.1 Routine Calls 14

5.2 Urgency and Safety Calls 14

5.3 Group Calls 15

5.4 Distress Alert 15

6 Sending A DSC Call

17

6.1 Distress Calls 17

6.2 Routine Calls 18

6.3 Urgency and Safety Calls 19

6.4 Group Calls 20

7 Log View

21

7.1 Routine Log Review 21

7.2 Distress Log Review 22

Page

1

Operation Manual S10

8 DSC Settings

23

8.1 MMSI Setting/View 23

8.2 Set Group ID 24

8.3 Set Date and Time 25

8.4 Set Manual Position/UTC 25

8.5 Set Called Channels 26

8.6 Set Directory of Called MMSI and Vessel Names 27

9 Expansion Channels
10 Technical Specifications

29
30

10.1 Receiver 30

10.2 Channel 70 Monitor General Specification 31

10.3 Transmitter 31

10.4 GPS 31

11 VHF Marine Channel Chart
12 Installation

32
33

12.1 Unit Installation 33

12.2 Antenna Installation Recommendations 34

13 Parts Provided

Warranty
Certificate of Conformity

36
36

37

Page

2

Operation Manual S10

1. Introduction

The S10 is a Class-D Digital Selective Calling (DSC) VHF marine transceiver.
Comprised of a VHF marine radio and a DSC controller, it is very convenient
and easy to use. The transceiver is a 1/25-watt, frequency modulated
waterproof transmitter/receiver for operations on all currently allocated
marine channels as well as 10 expansion channels.

The S10 supports the latest GMDSS requirement for non-SOLAS vessels
from the International Maritime Organization (IMO). When connected with a
GPS, it will display the position and Universal Time Coordinate (UTC) of your
vessel.

The S10 lets you make digitally selected calls, which are quicker and simpler
to make compared with conventional voice calls using channel 16. Should a
distress, urgency or safety situation occur, you can depend on the S10 to
raise an alert quickly, thereby indicating your identity and position
automatically through a distress communication on the emergency voice
channel.

SILVA operates a policy of continual development and reserves the right to
alter and improve the features/specification of their products without prior
notice.

Page

3

Operation Manual S10

2. Panel Description

2.1 FRONT PANEL

(11)

(12)

(13)

DISTRESS

1. POWER SWITCH (ON)

Press the (ON) button once to switch on the S10.
To switch off, press the (ON) button again.

2. CHANNEL MEMORY KEY (M+)

The function of this key is to add or delete the currently selected
channel from the scan memory.

3. CLEAR KEY (CLR)

Stops current task and returns to the main screen.

4. SQUELCH MODE SELECTION KEY (SQ)

5. VOLUME CONTIOL MODE SELECTION KEY (VOL)

6. FUNCTION SELECTION KEY (F)

Press this key once to enter the function selection mode; the LCD will
display the function menu. The selectable functions are DUAL
WATCH, FULL SCAN, MEMORY SCAN, H/L (high/low) POWER,
DIM or SPEAKER CONTROL. Press the (F) key again to confirm the
selected function.

7. DOWN KEY (▼)

Selects the desired channel, squelch control level or volume control
level. Each press selects the next lower channel number or level.
Hold down this key to scroll downwards through all selectable
channels.

Page

4

(10)

16

F

VOL

SQ

CLR

M+

ON

(9)

(8)

(7)

(6)

(5)

(4)

(3)

(2)

(1)

Operation Manual S10

8. CHANNEL 16 KEY (16)

Press this key and return to channel 16 immediately from any
channel or function.

9. UP KEY (▲)

Selects the desired channel, squelch control level or volume control
level. Each press selects the next higher channel, number or level.
Hold down this key to scroll upward through all selectable channels.

10. LIQUID CRYSTAL DISPLAY (LCD)

Dot Matrix display, giving up to 8 lines of information.

11. SPEAKER

12. DISTRESS CALL BUTTON

The distress button is located under a spring-loaded cover that must
be lifted before the button can be pressed.

13. FIST MICROPHONE/CONTROLLER CORD

2.2 BACK PANEL

W

P R
12V

GPS

SPK

ANT

1. POWER CORD

2. GPS and EXT.SP socket.

3. ANTENNA

4. Ventilation Hole
Should the display show signs of misting up, remove this screw
and ventilate the unit until the mist is cleared. Upon completion,
insert the screw and tighten once again.
Note : To ensure your S10 maintains its water-proof integrity,
please make sure the water-proof plastic washer is properly
inserted before the screw; the screw should be fully tightened to
prevent water ingress.

Page

5

Operation Manual S10

8

2.3 LCD DISPLAY

9

GROUP 1

7

56

1

2

3

4

VL Volume control activated, the Bar (9) indicates the volume level.
Sq Squelch control activated, the Bar (9) indicates the squelch level.
Mu Appears when the squelch opens.
RX The radio is in receptive state (RX) and when receiving a signal.
TX The radio is transmitting (TX).

GROUP 2

Hi Indicates Transmitter maximum output power is 25W.
Lo Indicates Transmitter maximum output power is 1W.

GROUP 3

S Indicates the displayed channel is a simplex channel.
D Indicates the displayed channel is a duplex channel.

GROUP 4

I Indicates the international channels are selected.

K Indicates the international channels + UK M1 and M2 channels

are selected.

GROUP 5

DW Indicates dual watch is in operation.
FS Indicates full scanning of every channel in current channel list is

in operation.

MS Indicates scanning of the selected memory channels is in

operation.

GROUP 6

M Indicates the displayed channel is a selected memory scanning

channel.

GROUP 7

Date/hours: minutes

GROUP 8

00-88 Channel no selected

P0-P9 When the channel is an expansion channel.

Page

6

Operation Manual S10

3. Fist Microphone/Controller

The fist mike/controller has the microphone, Push to Talk (PTT) switch
and soft keypad as illustrated below:

3.1 SOFT KEYPAD (0 - 9)

The telephone style keypad ITU 0 – 9 / A - Z is used for entering numeric
data. When required, the keys will automatically switch to character mode
allowing letters, numbers and punctuation marks to be entered.
Repeatedly pressing a key will cycle through the characters available on
that key.

Number 1 2 3 4 5 6 7 8 9 0

1

press

2

press

3

press

4

press

5

press

—

, B E H K N Q U X

。

/

1 2 3 4 5 6 7 8 9 0

PTT

526

8

0

CLR

3

9

ENT

Mi cr ophone

CAL L

1

4

7

MENU

A D G J M P T W 0

（

C F I L O R V Y

？ ！ ：

” ’ S & Z %

）

Page

7

Operation Manual S10

ENTER KEY (ENT)

Confirms the action.

CLEAR KEY (CLR)

Stop tasks and returns to main screen or returns to the last screen.
◄ / ► Key
Used to select stored numbers and names as marked by the cursor, or to
select through the call log.

▲/ ▼ KEY

Used to select working channel (Up or Down). Can also be used to select
stored working channels and menu functions.

PTT BUTTON

Keys the transmitter allowing you to transmit a message.

(CALL) KEY.

Activates “CALL” menu.

(MENU) KEY

Press to scroll through various settings such as MMSI, Call Logs,
Position/UTC, Group ID, etc. For details, please refer to the relevant
chapters.

Page

8

Operation Manual S10

4. General Operation

The S10 is switched on by pressing the (ON) key once. If a GPS receiver
has been connected to the S10, the MAIN screen will be as below:

Press the (F) key on the front panel once to enter the function selection
mode. The FUNCTION SELECTION screen will be displayed as below:

Press the ▲ or ▼ key to move the cursor to the required function (DUAL
WATCH, FULL SCAN, MEMORY SCAN, H/L POWER, DIM or
SPEAKER CONTROL), then press (F) key to confirm. When the desired
function is selected, the relevant screen will be displayed. Press (F) key
again to restore normal operation, and press (CLR) key to change to the
main screen.

4.1 DUAL WATCH (DW)

Dual watch enables the radio to scan between the selected channel and
priority channel (normally CH16). In dual watch mode, the DW indicator
will appear on the bottom line of the LCD.

Page

9

Operation Manual S10

Note that the radio will not transmit, nor will alternative channels be able
to be selected while in dual watch mode. To restore normal operation
press (F) key again or press channel (16) key.

4.2 FULL SCAN (FS)

This function scans through each channel sequentially until a signal is
detected above the squelch level set. Once the signal ends or drops
below the squelch level, the radio will continue scanning. Alternatively,
you can instruct the S10 to continue scanning even if a signal has been
detected on any particular channel by pressing the ▲ key once. When in
Full Scan mode, FS will appear on the bottom line of LCD.

Note that the radio will not transmit, nor will alternative channels be able
to be selected while in Full Scan mode. To restore normal operation
press (F) key or press channel (CH16) key to go to back to the VHF
screen.

4.3. MEMORY SCAN (MS)

The Memory Scan operates in the same way as the Full Scan, except
that it will only scan channels that have been entered into the Scan
Memory. If no channels have been entered into the memory then this
function will not be available.

When in memory scan mode, “MS” will appear on the bottom line of the
LCD.

4.4 HIGH/LOW RF OUTPUT POWER SELECTION

Press ▲ or ▼ key to move cursor on the FUNCTION SELECTION
screen to required “H/L POWER” function, then press the (ENT) key to
select between low or high power, and the “Hi” or “Lo” will appear on the
bottom line of the LCD.

Page

10

Operation Manual S10

4.5 DIMMER

There are five brightness levels, which can be adjusted by pressing the
▲ or ▼ key on the FUNCTION SELECTION screen to select the
required “DIM” function, then press (F) key to enter the BACKLIGHT
ADJUST screen as below:

Press ▲ or ▼ key on the front panel to select brightness, then press (F)
key to go back to the main screen.

4.6 SPEAKER CONTROL

The S10 offers an internal or external speaker option. Select SPEAKER
CONTROL on the FUNCTION SELECTION screen and confirm your
selection by pressing (F) or (ENT) key.

4.7 SQUELCH CONTROL

When the (SQ) key on the front panel is pressed, the squelch level bar
and “Sq” symbol will appear at the right side of the screen as below:

Page

11

Operation Manual S10

Then use ▲ and ▼ key on the front panel to adjust the receiver muting

threshold (squelch) level.
To cut out weaker signals, press ▲ key to increase the squelch until the
background interference noise disappears. To receive weaker signals
press ▼ key to decrease the squelch.

4.8 VOLUME CONTROL (VOL)

Press the (VOL) key on the front panel, the volume control screen will be
displayed. The level bar and character “Vl” will appear on the right side of
the screen as below:

Press ▲ key to increase the volume. Press ▼ key to reduce the volume.

4.9 CHANNEL 16 (16)

Pressing the (16) key will automatically select channel 16 on high power.
Any active function (Dual watch scanning, DSC setting, log view etc) will
be cancelled.

Page

12

Operation Manual S10

4.10 CHANNEL SELECTION (▲/▼)

Press ▲ key to go up through the channels. Press ▼ key to go down
through the channels.
Channel Selection Shortcut:
Select the desired channel directly from the main screen by pressing the
channel number on the fist microphone/controller.

4.11 STORED CHANNEL SETTING (M+)

Pressing the “M+” key will add the currently selected channel into the
scan memory; doing this when the S10 is in VHF receiver mode will
activate a “M” marking on the bottom-right corner of the screen, indicating
the channel has been entered into scan memory. If the relevant channel
is already in scan memory, pressing the “M+” key will remove the “M”
marking on the screen, indicating the channel has been removed from
memory.

Page

13

Operation Manual S10

5. Receiving A DSC Call

When a DSC call is received, the radio will switch to the call log screen to
display the details of the call and ring or sound the alarm depending on
the nature of the call. The procedures that follow describe how to handle
the types of calls that can be received.

5.1 ROUTINE CALLS

When a Routine Call is received, an alarm will sound and the screen will
show the details of the call, where it is from and the working channel, as
below:

Press the (ENT) key on the fist/mike keypad, an acknowledgement will
be sent to the caller and the radio will be automatically switched to
working channel for normal voice communication. The “*” will disappear
when the call has been acknowledged.

5.2 URGENCY AND SAFETY CALLS

The procedures for Urgency and Safety Calls are very similar. An
urgency call will sound the distress alarm and switch the radio to Channel

16. A safety call will sound a normal ring and switch the radio to the

specified working channel as below:

Page

14

Operation Manual S10

Press the (ENT) key to stop the alarm (or ringing), and then listen for the
voice message.

5.3 GROUP CALLS

When a Group Call is received, the radio will ring and display the details
of the call, indicating whom it is from and the working channel as

below:

Press (ENT) key to stop the ringing, then listen for the voice message or
begin speaking.

5.4 DISTRESS ALERT

If a Distress Alert or a Distress Relay is received from another vessel, an
alarm will sound and the Radio will switch to channel 16. The screen will
show the details of the Distress Alert or Distress Relay, the MMSI of the
vessel, the nature of the distress, its position and time, Mute the alarm by
pressing (ENT) key and maintain a listening watch on channel 16 for the
distress messages. Press (CLR) key to clear the display.

Page

15

Operation Manual S10

Page

16

Operation Manual S10

7

6. Sending A DSC Call

Making a DSC Call is very simple. First choose the call type (Routine,
Safety, Urgency, Group or Distress Alert). If required, enter the
destination and working channel and then send the call by pressing
(ENT) key on the fist microphone/controller. The digital signal will be sent
out in under a second, containing the vessel’s ID and the call type.

In order for the radio to function, your MMSI (Maritime Mobile Service
Identifier) number will need to be entered. This number can be obtained
from your local radio communications authority. For group calls, the
group ID will need to be entered also.

6.1 DISTRESS CALLS

This call should only be made if the vessel is in a distress situation,
and lives are in danger.

Making a Distress Alert call is very simple. Lift the protective cover and
press (DIST) key on the front panel. The Distress Alert screen will be
displayed as below:

If time permits, press the ▲ or ▼ key to select the nature of the distress.
There are 10 categories recognized as Distress Alert situations, which
are: fire, flooding, collision, grounding, listing, sinking, adrift,

abandoning, piracy and man overboard. There is also a default
undesignated category, which is used if no category is selected here.

Page

1

Operation Manual S10

Press and hold the (DIST) key for about five seconds. A countdown to
the transmission will be displayed then an alarm will sound.

The Distress Alert transmission contains the following data:

1. The vessel’s MMSI;

2. The vessel’s position (either from the NMEA0183 input, or manually

entered);

3. The time (from NMEA or Manual input);

4. The nature of the distress.

After the Distress Alert has been sent, the Radio will automatically tune to
channel 16 and the Radio will repeat the Alert approximately every four
minutes until either an acknowledgement is received, or (CLR) key is
pressed (it is not recommended that the Distress Alert is cancelled
manually by pressing (CLR) key unless you are requested to do so by
the rescue authorities).

While the Distress Alert remains active, an intermittent alarm will continue
to sound approximately once every 25 seconds.

When an acknowledgement is received from the Rescue Co-ordination
Centre, this will cancel the Distress Alert transmission from the Radio and
automatically switch the Radio to the required working channel. The
subsequent Rescue Co-ordination will be performed using the voice­working channel.

6.2 ROUTINE CALLS

To make a Routine Call, press (CALL) key on the fist microphone/­controller to select Routine Call. The screen as below:

Page

18

Operation Manual S10

Then enter the corresponding MMSI number with the keypad and select
a working channel by pressing the ▲ or ▼ key on the keypad from the
channel list.

Press (ENT) key and the Radio will send a Routine Call; the radio will
change to the following screen as you wait reply.

When a reply is received, the radio will sound a tone and automatically
switch to the specified working channel. A voice call can then be made in
the normal way.

6.3 URGENCY AND SAFETY CALLS

Press (CALL) key on the fist microphone/controller keypad to select
Safety Call or Urgency Call as below:

Press (ENT) key, and the screen will change to the following:

Page

19

Operation Manual S10

Press the (ENT) key again to make the call, or press (CLR) to cancel.
When the call is sent, the radio will be set to the working channel. Allow a
few seconds for the stations receiving the call to switch to the working
channel. Then make a normal voice call on the selected working channel.

6.4 GROUP CALLS

If a group ID has been set up for the called Radio. A call can be made to
other members of the group.
Press the (CALL) key on the keypad to select the GROUP CALL screen
as below:

Select a working channel from the channel list by pressing the ▲ or ▼
key on the keypad.

Press (ENT) key to send the call. Allow a few seconds for the other
members of the group to reach their radios (all VHF radios in the group
should automatically switch to selected working channel upon
acknowledgement), then make a normal voice call.

Page

20

Operation Manual S10

7. LOG VIEW

7.1 ROUTINE LOG REVIEW

The routine log can be used to look back through the last 20 calls that
have been received, the most recent call first.

Press (MENU) key on the mike keypad to select the ROUTINE LOG
screen as below:

If there are any general calls in the routine log press the ◄ or ► key to
move back and forth through the log, the ROUTINE LOG screen as
below:

If there is a “*” symbol on the screen, you can press (ENT) KEY to send
an acknowledgement directly to the caller. After acknowledgement, the
“*” symbol will disappear.

Press (CLR) key to exit the call screen.

Page

21

Operation Manual S10

7.2 DISTRESS LOG REVIEW

The distress log can be used to look back through the previous 20
distress calls that have been received, the most recent call first.

Press (MENU) key on the mike keypad to select the DISTRESS LOG
screen as below:

If there are any distress calls in the distress log screen, press the ◄ or ►

key to move back and forth through the DISTRESS LOG screen. The

DISTRESS LOG screen as below:

Press (CLR) key to exit the call log screen.

Page

22

Operation Manual S10

8. DSC Settings

8.1 MMSI SETTING/VIEW

If a MMSI No. has not been entered into the S10, the MMSI SET screen
will appear on the display every time the unit is switched on, as below:

If no MMSI number is entered, you can use the unit with the default
MMSI set as 000000000, and every time the S10 is switched on, it will
ask you to enter the MMSI number.

Switch ON the unit, then press numeric soft key on the microphone to
enter the MMSI number (9-digit). This number can be obtained from your
local radio communications authority. If a mistake is made, use the ◄ or
► key to move back and edit the error. Then press (ENT) key, the Radio
will ask for verification as below:

It is important that the MMSI entered is checked carefully, as it can only
be entered once!

Press (ENT) key once again to confirm the number, and the screen will
now show the MMSI of your vessel.

Page

23

Operation Manual S10

To view your vessel’s MMSI, press (MENU) soft key on the fist mike to
select the MMSI VIEW screen, as below:

Press (CLR) key to go back to the main screen.

To change the MMSI number after it has been programmed, the unit
must be returned to an authorized dealer to erase the exiting number.

8.2 SET GROUP ID

To enter a Group ID (if for example, the vessel is part of a flotilla or
fishing fleet etc), press (MENU) soft key to select the GROUP ID SET
screen. The screen will be displayed as below:

Press numeric soft key to enter the GROUP ID number (8-digits, the first
digit must be “0”). If a mistake is made, use the ◄ or ► key to move
back the cursor and reset the number. Press (ENT) key and the radio will
ask for verification. Check that the no, is correct and press (ENT) key
once again to confirm your entry. To amend, press (CLR) key to go back
to main screen.

Page

24

Operation Manual S10

8.3 SET DATE AND TIME

Press (MENU) soft key to select the “SET DATE/TIME” screen, as below:

Use the numeric keys to enter numbers, then press (ENT) key to confirm
the date and time.

Note that the time should be entered in 24-hour clock format.

8.4 SET MANUAL POSITION/UTC

If the position of the vessel cannot be obtained from a GPS via the NMEA
0183 input, this data can be entered manually.

Press (MENU) soft key to select the “POSITION/UTC” screen as below:

Use the numeric soft key to enter the required data, then press (ENT) key
to accept the position and time entered.

Page

25

Operation Manual S10

After 23 hours, if the radio has not received any position data either
manually or from the NMEA input, then the position data will disappear
from the screen, and it will show “NO POSITION”.

8.5 SET CALLED CHANNEL

The Radio includes a list of 9 working channels, which can be scrolled
through when using the routine group calling. The first four channels are
preset as 06, 08, 72 and 77. These cannot be amended. The remaining
five channels are programmable. Always consult your local authority
requirements when choosing suitable working channels. Find out which
channels are duplex as these do not allow ship-to-ship communication.

Press (MENU) key to select the WORK CHANNEL screen as below:

Press ▲ or ▼ key to select “ADD” from the WORK CHANNEL screen,
then press (ENT) key to enter, as below:

Press ▲ or ▼ key to change the selected channel, and press (ENT) key
to accept. Then press ◄ or ► key to enter the next channel.

Page

26

Operation Manual S10

7

To delete a Work Channel, press ▲ or ▼ key to move the cursor on the
WORK CHANNEL screen and select “DEL”, then press (ENT) to accept.
The WORK CHANNEL screen appears as below:

Press ◄ or ► key to select the channel (5th – 9th channel) that you wish
to delete, then press (ENT) key to accept.

8.6 SET DIRECTORY OF CALLED MMSI AND VESSEL NAMES

The DIRECTORY screen is used to add, edit and delete the MMSI and
NAME of called vessels from a list of up to 20 stored MMSI numbers,
which can be recalled in the routine call screen. Press (MENU) soft key
to select the “DIRECTORY” screen as below:

To access a new entry, press ▲ or ▼ to move the cursor in front of
“ADD”, then press (ENT) key to enter DIRECTORY-ADD screen as
below:

Page

2

Operation Manual S10

Use the soft keypad to move backwards and forwards along the line to
enter a name or number. When the name and number have been added,
press (ENT) key to confirm.

To edit an existing entry, press ▲ or ▼ key to move the cursor in front of
“EDIT”, then press (ENT) key to enter DIRECTORY-EDIT screen as
below:

Use the ◄ or ► key to move along the name and MMSI fields, using the
soft keypad to edit the data. Press (ENT) to store the modified entry.

To delete an entry, press ▲ or ▼ key to move the cursor in front of
“DEL”, then press (ENT) key to enter DIRECTORY-DEL screen as below:

Use the ◄ or ► key to select the number you wish to delete, then press
(ENT) key to delete the entry.

Page

28

Operation Manual S10

9. Expansion Channels

Authorized users can have up to 10 expansion channels activated on their
Silva S10 units.

Silva UK Ltd. Service Division

Page

29

Operation Manual S10

10. Technical Specifications

Power Supply DC 12 V +30/-10%
Channel Capability 57 international channels
UK: includes 10 expansion channels
Frequency Resolution 25KHz
Method of Frequency Generation synthesizer
Dimension 175(W) × 79(H) ×130(D) mm
Weight 1175 grams

10.1 RECEIVER

Multi Channel Receiver

1. The receiver incorporates a dual conversion super-heterodyne design.

2. Tuning Frequency Range 156.025-163.275MHz

3. IF Frequency Used: 21.4MHz; 455KHz

4. Maximum Useable Sensitivity ≤6dBμe.m.f. of 20dB/SINAD

5. Adjacent Channel Selectivity ≥70dB

6. Spurious Response Rejection ≥70dB

7. Inter-Modulation Rejection ≥68dB

8. Spurious Emission Radiation ≦2nW

9. Current: 0.9 Amps (Max Audio)

0.4 Amps (STBY)

10. Audio Frequency Response +1, -3dB of +6dB/octave

De-emphasis 300-3000Hz

11. Hum and Noise ≤40dB

12. Audio Output 3.5W at less than 10% distortion

with 4 Ohm external speaker
2W only internal speaker

Page

30

Operation Manual S10

10.2 CHANNEL 70 MONITOR GENERAL SPECIFICATION

1.Frequency CH70 (156.525MHz)

2.Sensitivity ≤0dBμEMF for 20dB SINAD

3.Bandwidth 16KHz

4. First IF Frequency Used 17.9MHz

5. Second IF Frequency Used 455KHz

6. Adjacent Channel Selectivity ≥70dB

7. Spurious Response Rejection ≥70dB

8. Inter-Modulation Rejection ≥65 dB

9. Mode of Reception 16K0G2B

10. Spurious Emission, Radiation ≤2nW, 9KHz to 2GHz

10.3 TRANSMITTER

1.Type of Emission 16K0F3E(Voice)

13K5G2B(DSC)

2.Frequency Range 156.025-161.425MHz

3.Output Power 25W, 1W into 50 Ohms

4. Audio Harmonic Distortion ≤10%

5. Audio Frequency Response +/-3dB of +6dB/octave

Pre-emphasis 300 – 3000Hz

6. Hum and Noise ≤-40dB

7. Frequency Deviation 5KHz max peak

8. Spurious Emissions (Radiated) ≤0.25μW

9. Current ≤5 Amps(25W)

10.4 GPS

1.Input Data Format: NMEA0183 version 2.0 sentences

RMC, GGA and GLL

Page

31

Operation Manual S10

p

p

p

y (

p

p

p

g

p

y

g

p

p

p

p

p

p

p

p

p

p

p

p

p

p

p

p

p

p

g

p

p

p

p

p

p

p

p

p

p

p

p

p

p

11. International VHF Marine Channel Chart

Channel

Transmitter

Frequency

2 156.100 160.700 D Public Correspondence, Port Operation YES YES
3 156.150 160.750 D Public Corres
4 156.200 160.800 D Public Corres
5 156.250 160.850 D Public Corres
6 156.300 156.300 S Safet
7 156.350 160.950 D Port Corres
8 156.400 156.400 S Commercial, inter-shi

9 156.450 156.450 S Commercial/Non-Commercial YES YES
10 156.500 156.500 S Commercial YES YES
11 156.550 156.550 S Commercial, VTS YES YES
12 156.600 156.600 S Port O
13 156.650 156.650 S Brid
14 156.700 156.700 S Port O
15 156.750 156.750 S Recv Onl
16 156.800 156.800 S Callin
17 156.850 156.850 S State Controlled Shi
18 156.900 161.500 D Port O
19 156.950 161.550 D Port O
20 157.000 161.600 D Port O
21 157.050 161.650 D Public Corres
22 157.100 161.700 D Public Corres
23 157.150 161.750 D Public Corres
24 157.200 161.800 D Public Corres
25 157.250 161.850 D Public Corres
26 157.300 161.900 D Port O
27 157.350 161.950 D Public Corres
28 157.400 162.000 D Public Corres
60 156.025 160.625 D Public Corres
61 156.075 160.675 D Public Corres
62 156.125 160.725 D Public Corres
63 156.175 160.775 D Public Corres
64 156.225 160.825 D Public Corres
65 156.275 160.875 D
66 156.325 160.925 D Public Corres
67 156.375 156.375 S Non-Commercial, VTS YES NO
68 156.425 156.425 S Non-Commercial YES YES
69 156.475 156.475 S Non-Commercial YES YES
70 156.525 S
71 156.575 156.575 S
72 156.625 156.625 S Non-Commercial YES NO
73 156.675 156.675 S Port O
74 156.725 156.725 S Port O
77 156.875 156.875 S Intershi
78 156.925 161.525 D Port O
79 156.975 161.575 D Port O
80 157.025 161.625 D Port O
81 157.075 161.675 D Port O
82 157.125 161.725 D Port O
83 157.175 161.775 D Port O
84 157.225 161.825 D Public Corres
85 157.275 161.875 D Public Corres
86 157.325 161.925 D Public Corres
87 157.375 161.975 D Public Corres
88 157.425 162.025 D Port O

YES NO

Receiver

Frequency

Mode

S/D

Public Correspondence, Port Operation,

DSC Distress, ur
Intership, Port Operation, on

Channel Assignment

ondence, Port Operation YES YES
ondence, Port Operation YES YES
ondence YES YES

Compulsory) YES NO

ondence, Port Operation YES YES

eration, VTS NO YES

e to Bridge, (1W) navigational YES YES

eration, VTS YES YES

-Coast to Ship YES YES

&Safety, Compulsory YES YES

eration YES YES
eration NO YES
eration NO YES

ondence NO YES
ondence NO YES
ondence NO YES
ondence
ondence

eration, VTS

ondence, Port Operation
ondence, Port Operation
ondence, Port Operation
ondence, Port Operation
ondence, Port Operation
ondence, Port Operation
ondence, Port Operation

ondence, Port Operation YES YES

ency, safety and

eration, VTS YES YES
eration, VTS YES YES

, Port Operation YES NO
eration, Public Correspondence YES YES
eration, Public Correspondence YES YES
eration, Public Correspondence YES YES
eration, Public Correspondence YES YES
eration, Public Correspondence YES YES
eration, Public Correspondence YES YES

ondence YES YES
ondence NO YES
ondence NO YES
ondence NO YES

eration, Public Correspondence NO YES

YES NO

to Coast (1W) YES YES

Function

Ship

Ship

To

To

Ship

Shore

YES YES

YES NO
YES YES

Page

32

Operation Manual S10

12. Installation

12.1 Unit Installation

The S10 should be sited so that engine noise and vibration or other
background noises do not make it difficult for the operator to hear.

It is recommended not to install the unit where it will be exposed to
continuous direct sunlight as this will eventually damage the LCD display.

As loudspeakers contain powerful magnets, the radio should not be
installed within 1m (3ft 3in) of any compasses, whether magnetic or
electronic.

The fins on the back of the unit act as a heat sink to dissipate heat
generated by the set when in use, which maintains the high efficiency of
the radio. The free circulation of air is essential - if the radio is mounted in
an enclosed space, please ensure the space is well ventilated

The S10 is supplied with a reversible mounting bracket. This can be used
to mount the radio on the chart table or on an overhead bulkhead (Fig A).
Before installing, ensure that there is at least 100mm (4.0 in) vertical
clearance and 70mm (2 3/4in) horizontal clearance behind the bracket to
allow the radio to fit (Fig B). The rake angle of the radio can be adjusted
by slackening the clamp.

Fig A

Fig B

101mm(4.0in)

70mm(2 3/4in)

Page

33

Fig C

Operation Manual S10

On the back of the S10 there is an antenna socket, a power cable socket
(Fig D) and an external speaker and GPS input socket.

1

2

1000mm

RED

GPS +

（

）

BLACK（ GPS GND）

+

S

P

G

D

N

G

S

P

G

EXT.SP+

E

X

T

.

S

P

-

RED（ GPS + ）

BLACK（ GPS GND）

YELL OW（ EXT. SP + ）

WHI T E（ EXT . SP - ）

YELLO

W（EXT.SP

+

WHITE（EXT.SP

）

-
）

MIC PLUG

4

3

Fig D

The S10 requires a 12v DC supply to operate. This lead should be
connected to the vessel’s power supply (the red wire is positive, black is
negative), and the cable kept as short as possible. Although the radio draws
very little current when receiving, a heavier current is drawn when
transmitting which may result in a voltage drop if very long cables are used of
inadequate core diameter. If the supplied power lead is not long enough, an
extension of up to 3m(10 ft) can be made using at least 2.5mm (13AWG)
wire.

The chassis of the S10 is not connected to either supply rail. This allows a
direct connection to the ship’s earth connection for voltage and RF interface
protection. The red wire is positive and black is negative. If polarity is
accidentally reversed, the set will not operate.

The antenna is connected to the S10 using a standard PL259 type connector
as fitted to most marine antenna. If fitted to an existing antenna, check that
the contacts are not corroded before connecting, as this will affect the quality
of the signal, Ensure that the retaining collar of the antenna plug is securely
tightened to prevent accidental disconnection.

12.2 Antenna Installation Recommendations

The most important factor in the performance of the S10 will be the quality
and positioning of the antenna. Most recorded problems with VHF radios are
related to poor antenna sighting, faulty cabling, poor quality cable joints and
low voltage supply. Even the best performing radio cannot compensate for
these factors. If replacing an existing

installation using the same antenna, it

is important that these factors are checked when installing the radio.

Page

34

Operation Manual S10

As the range of VHF signals are governed by line of sight, the antenna
should be placed as high as possible, while remaining clear of any
metallic objects that could influence the resonance of the antenna.

The most popular antenna for marine use are 1m (3ft 3in) long. On sail
boats these are usually mounted at the masthead, where the length of
the antenna keeps it clear from the navigation lights and wind vanes etc.
This type of antenna can also be mounted on the cabin roof or radar arch
on powerboats.

Longer whip antenna are recommended for larger boats. These radiate
the same total power as smaller antenna, but concentrate it into a
narrower beam, which is advantageous on a tall mast at extreme range
where concentrating the available power into a narrow horizontal beam
becomes more important. However, if the antenna is not vertical when
transmitting, the beam will be angled either too high or too low (Fig E).
Here the wider beam of the shorter antenna will be more universally
effective, although the signal will be weaker (Fig F):

Fig E Fig F

Fi g F

Fi g G

Therefore vessels with a large heel angle (small sailboats) would do
better with a short masthead antenna. Your local agent should be able to
provide specific advice on antenna choice for the vessel it is to be fitted
on.

The antenna coaxial cable and any connectors used must be rated at
50Ω. Under no circumstances should standard domestic TV cable and
connectors be used. Incorrectly rated cabling and connectors could result
in power not reaching the antenna, but also power could be reflected
back into the radio, damaging it in the process.

Page

35

Operation Manual S10

13. Supplied Parts

1. Mounting Bracket …………… 1 7. Power Cord ……………… 1

2. Microphone Hanger ………… 1 8. Mounting Bracket Washer… 4

3. Bracket Knob Washers …… 2 9. Hanger Spring washer …… 2

4. Mounting Bracket Knobs …… 2 10. GPS/Speaker Plug Cord … 1

5. Mounting Bracket Screws …… 4 11. Thermoshrink Tube …… 4

6. Mic Hanger Screws ………… 2

1

7 4

8

6

5

3

2

9

+
S

P

G

D

N

G

S

P

G

10

EXT.SP+

E

X

T

.

S

P

-

11

15. Warranty.

Silva warrants this product against manufacturing defects or malfunction in material and
workmanship for two (2) years from the date of original purchase. The remedies given under the
warranty will be available so long as the consumer can show in a reasonable manner that any
manufacturing defect or malfunction in materials or workmanship occurred within two year of the
date of original purchase. Proof of the date of purchase may be established by returning copy of
original sales invoice (or any other proof of purchase) to us. Any manufacturing defect or
malfunction in materials or workmanship which occurs within two years from the original
purchase date will be repaired without charge or replaced with a new product identical or
reasonably equivalent to this product, at Silva’s option, within a reasonable time after receipt of
the product. This Warranty does not however cover defects or damage caused by unauthorized
articles or services nor does it cover damage through accident or misuse, including failure to
provide reasonable and necessary maintenance in accordance with the instructions set forth in
your owner’s manual. Silva reserves the right to make changes or improvements in its products
from time to time without incurring the obligation to install such improvements on equipment
previously manufactured.

All transportation expenses for repairs are the responsibility of the consumer.

Page

36

Operation Manual S10

7

16. Declaration of Conformity

We Silva UK ltd. of Fleming road,

Kirkton Campus, Livingston,

EH54 7BN, SCOTLAND.

declare that the product identified below complies with the essential
requirements of Council Directive 99/05/EC according to the conformity
assessment procedure laid down in Annex IV of the Directive.

QINETIQ statement of opinion: QQ-RTTE XX/02-XX

Product:

Silva S10

25 Watt Marine Band Class D Transceiver.

For non-compulsory fit use only.

The product is labelled with the CE conformity marking and the
identification number of the notified body consulted in the conformity
assessment procedure.

Applicable Standards: EN301-025

EN 60945:1997 (clauses 9, 10 & 12).

ETS 300-225:1992

Livingston, 21

st

September 2003.

Mr A. Kent. Managing Director

Page

3