Furuno FM-4800, Руководство оператора

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CHANNEL WATCH FM-4800 Operator’s Manual
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5. CHANNEL WATCH
5.1 Dual Channel
Dual channel scans two channels for communications. One channel is a normal VHF
channel and the other is CH16. The following is how the DUAL CH feature works
when a signal is received on one of the channel:

If a signal is received on the normal channel, the radio quickly switches between
the normal channel and CH16 to look for a transmission.

If a signal is received on CH16, the radio stops and listens only to CH16 until
communication ends and then starts DUAL CH scan again.
Step 1
Press and rotate the Volume/Squelch control to adjust the squelch until
the background noise disappears.
Step 2
On the home screen, rotate the Menu/DSC control to select a channel to
DUAL CH with CH16.
Step 3
Press the Menu/DSC control to enter the "MAIN MENU" page.
Step 4
Select "CH WATCH".
Step 5
Select "DUAL WATCH".
The radio returns to the home screen. The display alternately scans
between CH16 and the channel that is selected in step 2.
Step 6 To stop DUAL WATCH, press the Back key or the Menu/DSC control.
5.2 Triple Channel
Triple channel scans three channels for communications: CH16, the second priority
channel, and a normal VHF channel. The following is how the TRIPLE CH feature
works:

If a signal is received on the normal channel, the radio quickly switches among
the normal channel, second priority channel, and CH16 to look for a
transmission.