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1. OPERATIONAL OVERVIEW
1-7
When the receiver detects a carrier and the squelch opens, the scanning is
stopped on that channel.
• When the squelch opens on the channel except CH16,
dual watch starts on it
and CH16.
• When the squelch opens on the CH16,
the CH16 is set.
When the squelch closes, the scanning restarts.
To stop the scanning, do one of the following:
• Press the CANCEL key.
• Press the CH16 key.
• Press the DISTRESS key.
• Press the DW/SCAN key.
• Off hook a handset if there is one on hook.
• Press the PTT switch of a handset that is off hook. In this case, press the PTT switch
again to transmit.
• Activate another session.
• Select [HOLD] in the RT session.
• Select [QUIT] in the RT session.
• Press the MENU key.
• Press the RT/REGION key.
1.11 How to Set the Auto Acknowledgement
Individual, PSTN (public switched telephone network), position, polling and test calls
can be acknowledged automatically or manually. This is set on the [ACK SETTINGS]
in the [DSC] menu (see section 5.16).
Note: When own ship's communication is high priority, set to manual acknowledge-
ment.
The auto acknowledgement is not sent in the following cases:
• Other session is active.
• There are RT or DSC sessions (for individual call).
• Channel is in use.
• ECC is NG (No Good).
Note: The auto acknowledgement for the individual call is sent only when the pro-
posed channel or communication mode is not available.
1.12 Priority of the System
If one or more remote stations are installed, the transceiver unit has the highest prior-
ity. You can interrupt remote station operation at any time with the handset of the main
unit. When you hook off the handset of the main unit, "OCCUPIED BY: FM-8900S"
(Default. This can be changed.) is indicated on all remote stations. Each remote sta-
tion has its own priority. The remote station ID (1-4) indicates its priority. The priority