4
Basic
0505
1.4 Making a Radiotelephone Call
A radiotelephone call is preferably to be commenced using DSC. Alternatively the following
public calling procedure shall be used:
1. Select channel 16 (by pressing ) or other agreed channel.
2. Lift the handset.
3. Press the PTT key and make your call.
First, say the name of the station
you are calling three times.
Then say “This is [your ship’s name”], again three times.
Finally, say “Over”.
4. Release the PTT key to listen.
5. When answered, agree upon a channel,
switch to that channel – for example, channel 6 – and begin your conversation. Only
press PTT when you are talking. If on a simplex channel (in other words, a channel
that can carry just one transmission at a time), always say “Over” just before
releasing.
1.5 Speaker Volume
The volume in the loudspeaker (internal and optional external) is adjusted by turning the
VOLUME control. The volume level is visualized in the telephone display. The volume can be
adjusted to a mute state by turning the volume control left (down). If the volume is adjusted
to the mute level the VOL LED will flash.
1.6 Earpiece Volume
The volume level of the default handset earpiece is adjusted selecting the Handset Volume
menu (4.3.1).
The and buttons are used to adjust the level. The level is indicated in the
information/message display.
1.7 Squelch
The squelch level is adjusted using the squelch control. The actual squelch level
is visualized in the telephone display.
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