Basic communications procedure
The following describes basic radio communication procedures.
Turning on the power
Do not turn off the equipment when at sea because the SOLAS Convention
requires keeping watch on distress and safety frequencies at all times.
Always listen to 2187.5 kHz and 8414.5 kHz, and one or more of the following
frequencies; 4207.5 kHz, 6312.0 kHz, 12577.0 kHz, or 16804.5 kHz.
In class B mode, it is necessary to keep watch only on 2187.5 kHz.
Make sure the equipment is connected to a
power source and turn on the breakers on the
The controller, transceiver and data terminal
start the internal check.
After the check is finished correctly, the status
display appears and becomes receiving
condition (standby) on the reception frequency
When turning on the controller or the
equipment in sleep mode, press
key for one second.
makes the system reset to restart.
When two controllers are connected,
and one controller is turned on from
sleep mode, the status display is
displayed immediately without
The start screen of the data terminal
is as shown at right.
If errors are detected during the
operation check, the message is
displayed. Please inform JRC or our
agent of the error contents.
key for 6 seconds
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