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
on the coast station. 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 in AM 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