Using The Monitor Modes; Dual Watch - Raymarine Ray54 Owner's Handbook Manual

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4.12 Using the Monitor Modes

The Watch Modes monitor the programmed Priority Channel and other user-
selected channel(s). The watch is halted when activity is detected on a
monitored channel. The Ray54 is equipped with 2 types of monitor
operations: Dual Watch and Tri Watch.

Dual Watch

Press and release the DW/TRI key to activate the Dual Watch mode.
DUAL CH16 appears in the dot matrix display.
Watch and return to the previous working channel.
Press and hold the DW/TRI key to terminate Dual Watch mode and go into
Tri Watch mode.
Press and release the CLEAR/WX key to terminate Dual Watch mode and
return to the last-used channel.
Press and release the 16/9 key to terminate Dual Watch mode and switch to
the Priority Channel.
Note: During Dual Watch mode, the SCAN/SAVE, USER, WX and CH keys
are inactive and sounds an error beep if pressed.
Dual Watch monitors the current working channel
and Channel 16 in cycle.
Dual Watch is demonstrated in the figure to the left;
the sample working channel is CH 72. Whenever
Weather Alert is activated, the WX Alert channel is
also monitored during Dual Watch.
Press and release the DW/TRI key to terminate Dual
Ray54 VHF Radio