Skanti MF DSC User manual

ii
Distress
acknowledgement
received
FROM: 002191000 VIEW
ABORT
5. Press “2182”.
6. Lift handset. Press PTT and say:
“MAYDAY, MAYDAY, MAYDAY
This is <Ship name (3 times)>
MAYDAY
This is <Ship name + call sign>
Position: ...
What is wrong: ...
Kind of assistance: ...
Number of crew: ...
Other info: ...
OVER.”
Quick DISTRESS Call
3 - 2 - 1 -
RELEASE
1. If off or STANDBY:
press ON/OFF.
2. Open DISTRESS lid.
3. Press DISTRESS
until RELEASE is displayed
Then the undesignated distress
call will be sent by default on the
distress frequency 2187.5 kHz.
Wait
for answer!
DISTRESS Acknowledgement
4. Press VIEW to read
the contents of call.
Release
Press
Press the DISTRESS button
for 3seconds to transmit
TYPE : Distress
MSG. : Undesignated
Pos : Unknown
Time : Unknown CANCEL
Read call contents.
CH
FREQ
MODE
AM TELEPHONY SIGNAL
POWER HIGH | | | | |
DISTRESS
Rx/Tx 2182.0 kHz
BAND
Rx 2182.0 kHz
Tx 2182.0 kHz
CANCEL
MODE
SSB TELEPHONY TUNE<
SIGNAL CLRF
POWER HIGH SQUELCH ON | | | | | RF-G
Awaiting
Automatic
Repetition
(The distress call is auto-
repeated every 5 minutes on
the same distress frequency.)
Listen for answer!

iii
What Is What?
1. Display.
2. Indicator lamps. Condition when lit:
Tx: Transmitting.
CALL: DSC (see button 9) call for you received.
ALARM: Alarm call received.
3. Keyboard.
4. Shift key. Press and hold for yellow functions.
5. DISTRESS button. Protected by shield. To use, lift the shield
and press for 3 seconds, guided by the text displayed.
6. Tuning control.
7. ON/OFF push button.
8. Volume control.
9. TEL/DSC function switch.
In TELmode radiotelephone parameters are shown and
selected.
In DSC mode DSC parameters are shown and selected.
10. Opens the ADDR BOOK in DSC mode.
11. Tx CALL: Press to start creating a DSC call.
12. Opens the Rx log over received calls in DSC mode.
13. Soft keys. The function of each key is described in its respective
line at the right edge of the display.
1
2
12
11
10
9
13
3
4
5
6
7
8

iv
Introduction
The SKANTI TRP 1000 series is a new generation of highly inte-
grated MF/HF radiocommunication systems for GMDSS. These
systems comply with the latest requirements within maritime MF/HF
communication.
The TRP 1000 series consists of a general purpose 250 Watt and
500 Watt transceiver designed for maritime applications covering the
frequency range 1.6-30 MHz. The standard versions offer simplex
and semiduplex radiotelephone communication with the built-in DSC
and Radiotelex fulfilling the GMDSS requirements including the
recommendations and specifications of the IMO and ETSI, as well
as relevant national specifications including all relevant CE-marking
standards.
The full GMDSS MF/HF functionality of the TRP 1000 series is
obtained by only four main units:
- The compact Transceiver Control Unit (TCU 1000) with inte-
grated DSC operation
- The 250/500 Watt Transceiver Unit (TU 1250/1500) with
integrated Radiotelex and DSC modem and DSC watch receiver
- The ruggedized weather-proof automaticAntenna Tuning Unit
(ATU 1250/1500)
- The simple printer/keyboard GMDSS telex system
Easy operation is one of the key features of the TRP 1000 series.
This has been achieved by making the MF/HF radio and DSC
operation similar to that of the associated SKANTI VHF 1000 DSC.
Operation of the TRP 1000 series is very easy with guided station/
channel operation and simple radiotelex operation in connection with
DSC.
Two Control Units are easily connected to the same transceiver unit
increasing the flexibility of the installation and providing an excellent
intercom facility.
About this Manual
This manual is for the daily user of the system. Additionally, it
includes a section on the installation procedures, and - on page 3 -
the standard distress procedures. We highly recommend you to
read the manual
before you start using the equipment.
Please note
Any responsibility or liability for loss or damage in connection with
the use of this product and the accompanying documentation is
disclaimed. The information in this manual is furnished for informa-
tional use only, is subject to change without notice, may contain
errors or inaccuracies, and represents no commitment whatsoever.
This agreement is governed by the laws of Denmark.
Document no.: B4501GB9 E/0043
Abbreviations Used in this
Manual
ADDR Address
AGC Automatic Gain Control
AM Amplitude Modulation
ARQ Automatic Repetition reQuest
CLRF Clarify
CU Control Unit
DIRTLX Direct Telex
DSC Digital Selective Calling
ETSI European Telecommunications Standards Institute
FEC Forward Error Correction
GA GoAhead
GMDSS Global Maritime Distress and Safety System
GPS Global Positioning System
HF High Frequency
IMO International Maritime Organisation
IRS Information Receiving Station
ISS Information Sending Station
ITU International Telecommunication Union
MF Medium Frequency
MMSI Maritime Mobile Ship Identification
MOM Just a moment please
MSG Message
NBPD Narrow Band Direct Printing
PTT Push-To-Talk
RF-G Receiver Frequency Gain
Rx Receive
SSB Single Side Band
TEL Telephony
Tx Transmit
UTC Co-ordinated Universal Time
VHF Very High Frequency

1
Contents
Quick DISTRESS Call .......................................................... ii
DISTRESS Acknowledgement............................................ ii
What Is What? ..................................................................... iii
Introduction......................................................................... iv
About this Manual .............................................................. iv
Abbreviations...................................................................... iv
MF/HF Fundamental Info .................................................... 2
Propagation of MF and HF Radio Waves........................ 2
Radiotelephony ................................................................ 2
Radiotelex ........................................................................ 2
DSC.................................................................................. 2
Basic Functions ................................................................... 3
Switching ON/OFF ........................................................... 3
Setting Backlight Level .................................................... 3
Switching Loudspeaker ON/OFF..................................... 3
Volume Control ................................................................ 3
Switching Squelch ON/OFF............................................. 3
Setting Transmitter Power Level...................................... 3
Manual Call Functions ........................................................ 4
Telephony Channel Display Functions: ........................... 4
Frequency Display Functions: ......................................... 4
Tuning .............................................................................. 4
Station Display Functions: ............................................... 5
Distress Telephony Frequencies ..................................... 5
Distress Frequency Display Functions: ........................... 5
Two-tone Alarm Signal ........................................................ 6
Two-toneAlarm Display Functions: ................................. 6
Listening for Calls ............................................................... 6
Making a Manual Call .......................................................... 6
DSC Main Buttons ............................................................... 7
DSC Display Operation ....................................................... 8
Receiving an Individual DSC Call.................................... 8
Receiving DISTRESS Call............................................... 9
Calling a SHIP................................................................ 10
Calling a SHORE Station................................................11
Address Book................................................................. 12
Using Two Control Units ................................................ 13
Priority of Control Unit #1......................................... 13
Control Unit #2 Taking Over the Control.................. 13
Status Indication....................................................... 13
Responding to Incoming DSC Calls ........................ 13
Power On/Off By Control Unit #2 ............................. 13
Interconnecting......................................................... 13
DSC Scanning Frequencies..................................... 13
Advanced DSC Calls ......................................................... 14
Changing a Function...................................................... 16
The Function Tree .................................................... 17
GMDSS Radiotelex Terminal ............................................ 18
Introduction .................................................................... 18
Keyboard Indicator Lamps............................................. 19
Keyboard Function Keys................................................ 19
Switching On .................................................................. 20
Channel Selection.......................................................... 20
Transmitting a Message................................................. 20
Editing a Message ......................................................... 20
Receiving a Message..................................................... 21
Installation and Initial Set-up ......................................... 21
Printer ....................................................................... 21
Keyboard .................................................................. 21
Modem Set-up.......................................................... 21
Example of FEC Transmission ...................................... 22
Example of ARQ Transmission to a Coast Statio.......... 22

2
MF/HF Fundamental Info
Propagation of MF and HF Radio
Waves
MF/HF radiocommunications provide a medium and long range
service. The 1.6-4 MHz marine band is intended primarily for coastal
operation beyond normal VHF communication range.A reliable
range of more than 150 nautical miles can be expected in most
areas in the daytime, more in the night-time. Propagation of the radio
waves in this band is mainly by ground waves i.e. the waves from
the transmitter aerial follow the earth’s curvature to the receiver
aerial. The high frequency range 4 - 30 MHz can provide
communication for hundreds or even thousands of nautical miles.
The long range is achieved by sky waves reflected from the iono-
sphere. Propagation of the radio waves depends on a number of
factors such as frequency, time of day, time of year, and solar
activity. The channels allocated to the maritime mobile service in the
HF range are divided into a number of bands: 4, 6, 8, 12, 16, 18, 22,
25 MHz to allow a suitable frequency band to be selected for
communication dependent on distance and time of day.
Radiotelephony
The mode of emission used for telephony transmissions in the
marine bands is SSB (single-sideband, J3E). On the international
distress frequency 2182 kHz compatible AM (amplitude modulation,
H3E) may be used in addition for communication with non-GMDSS
ships. AM mode is used also when receiving broadcasting. The
frequencies for radiotelephone distress and safety traffic in the HF
bands are 4125 kHz, 6215 kHz, 8291 kHz, 12290 kHz, and 16420
kHz. Working frequencies for public correspondence with coast
stations are arranged in pairs for duplex/semi-duplex operation. For
the HF bands these channels are allocated numbers by ITU on an
international basis. In addition a number of simplex frequencies are
available in each band for ship-to-ship communication.
Radiotelex
Marine telex is also referred to as ‘Narrow Band Direct Printing’
(NBDP). Due to the narrow bandwidth of the transmissions, a longer
range may be expected compared to radiotelephony. The frequen-
cies for radiotelex distress and safety traffic are 2174.5 kHz, 4177.5
kHz, 6268 kHz, 8376.5 kHz, 12520 kHz, and 16695 kHz. Working
frequencies for public correspondence with coast stations are
arranged in pairs. For the HF bands these channels are allocated
numbers by ITU on an international basis. In addition a number of
simplex frequencies are available in each band for ship-to-ship
communication.
DSC
DSC (Digital Selective Calling) is an automatic calling system which
allows a specific station to be contacted and made aware that a
station wishes to communicate with it. In addition to calls to specific
stations the system can also be used to call ‘all ships’ and groups of
ships and this is of significance for its use for DSC distress alerting.
DSC is an alerting signal only and the communication which follows
the call is made on an appropriate frequency band using radiote-
lephony or radiotelex. The frequencies for DSC distress and safety
calling are 2187.5 kHz, 4207.5 kHz, 6312 kHz, 8414.5 kHz, 12577
kHz, and 16804.5 kHz. Calling frequencies for public correspond-
ence with coast stations are arranged in pairs, both international and
national frequencies are assigned. In addition the frequency 2177
kHz may be used for ship-to-ship calling.

3
Basic Functions
Switching ON/OFF
1. Press the ON/OFF button.
Setting Backlight Level
1. Press the Shift key followed by the DIM key.
The backlight is changed from zero to maximum in four steps.
Repeat until the desired setting is reached.
Switching Loudspeaker ON/OFF
1. Press the Shift key followed by the SPK key.
Volume Control
1. Press the Volume key to adjust the loudspeaker sound volume.
Switching Squelch ON/OFF
(SSB Telephony mode)
1. Press the Shift key followed by the Squelch key.
When squelch is ON, the receiver output is muted in speech pauses.
Setting Transmitter Power Level
1. Press the Shift key followed by the Power Key.
The output power is set to HIGH, MED or LOW.
Repeat until the desired setting is reached.

4
Rx frequencies may be keyed in directly from the keyboard
Tuning
(Frequency display only)
1. Press the Tune key to adjust frequency or RF-gain of the receiver.
Functions indicated by arrow in the Frequency display:
TUNE: Frequency tuning in 1 kHz steps (AM), 100 Hz steps (SSB) or 500Hz (Telex).
CLFR: Frequency tuning in 10 Hz steps.
RF-G: Manual RF-gain tuning,AGC off.
Frequency Display Functions:
Manual Call Functions
Telephony Channel Display Functions:
A channel number may also be keyed in directly from the keyboard.
If the channel is not allocated to the station selected, the station
name will disappear from the display.
Soft keys
Switches to Frequency display for viewing or altering frequencies.
Switches to Station display for selection of another station.
Steps to the next lower channel number of the station.
Steps to the next higher channel number of the station.
Squelch setting Receive: Signal strength
Mode of emission Transmit: Output power level
Output power setting
Name of station if selected. Channel number.
LYNGBY FREQ
STATION
SSB TELEPHONY SIGNAL
POWER HIGH SQUELCH ON | | | | |
CH 4 1 8
CH
Soft keys
Switches to Channel display and previous channel number.
Moves the arrow to Tx before keying in a Tx frequency.
Steps between SSB telephony, AM telephony and Telex mode.
Steps between Tune, Clarify and RF-Gain tuning functions.
Squelch setting Receive: Signal strength
Mode of emission Transmit: Output power level
Output power setting
> Rx 4357.0 kHz
Tx 4065.0 kHz
Receive frequency
Transmit frequency
CH
TX
MODE
SSB TELEPHONY TUNE<
SIGNAL CLRF
POWER HIGH SQUELCH ON | | | | | RF-G

5
Station Display Functions:
Distress Telephony Frequencies
To switch to Distress Frequency display: Press 2182 Distress Freq key.
Distress Frequency Display Functions:
Soft keys
Selects the station and switches to Channel display for choice of channel number.
Returns to Channel display without selecting the station.
Selects previous station.
Selects next station.
Telex call code
Name of station
MMSI number of station
SELECT
CANCEL
NAME LYNGBY
CALL SIGN OXZ
MMSI NO 002191000
TELEX NO 37383 STN
STATIONTABLE
CH
FREQ
MODE
AM TELEPHONY SIGNAL
BAND
POWER HIGH SQUELCH OFF | | | | |
DISTRESS
Rx/Tx 2182.0 kHz
The frequencies for distress and safety telephony traffic are
2182 kHz, 4125 kHz, 6215 kHz, 8291 kHz, 12290 kHz, 16420 kHz
Soft keys
Switches to Channel display and previous channel number.
Switches to Frequency display.
Selects between AM and SSB mode of emission on 2182 kHz.
Steps to the distress telephony frequency in the next higher band.
Receive: Signal strength
Mode of emission Transmit: Output power level
Output power setting
Receive/transmit frequency.

6
Two-tone Alarm Signal
To switch to the Two Tone Alarm Signal display: Press the Shift key
followed by the Alarm key.
Transmission of the two tone alarm signal will continue for 45
seconds, but may be stopped manually by pressing the STOP key in
the frequency display. When the alarm signal ceases press the
handset key and transmit your distress message by speaking into
the handset microphone with a clear and calm voice.
Two-tone Alarm Display Functions:
Listening for Calls
Coast stations transmit traffic lists consisting of call signs/names of
the ships for which they have traffic.
The traffic lists are sent at specified times and at intervals of typically
two hours. They are broadcasted on the normal working frequencies
of the coast stations. Ships should, as far as possible, listen to the
traffic lists transmitted by relevant coast stations. On hearing their
call sign they should establish communication as soon as they can
do so.
1. Select the appropriate station.
2. Select the channel on which traffic lists are transmitted.
3. Switch loudspeaker on and adjust volume to an appropriate
level.
If on HF, traffic lists are transmitted in more frequency bands
simultaneously, search for the channel with the best propagation
conditions.
Making a Manual Call
Wait until transmission of the traffic list has finished and the channel
is free. Call the coast station on the working frequency on which the
traffic list was received or as instructed by the coast station.
1. Hook off the handset.
2. Press the PTT key on the handset when speaking.
Say:
1. <Called station’s name (3 times)>
2. ‘This is’ <Your ship’s name (3 times)>
3. ‘Over’
3. Release the PTT key to listen.
4. When answered:
Follow the instructions from the coast station. The coast station may
ask for further identification, information on position and next port of
call, and may suggest another working channel for the traffic to
follow. If the coast station is not ready to receive traffic immediately it
may ask you to wait for a specific number of minutes.
Note: The two tone alarm signal generator is intended for alerting
ships not yet equipped with DSC equipment. It may be used only to
announce a distress message and primarily on the frequency 2182
kHz inAM telephony mode.
Soft keys
Returns to frequency display.
Starts test of the alarm signal generator.
Starts transmission of the two tone alarm signal.
Press the START button FREQ
TEST
seconds to send alarm START
5