Furuno RC-1800F Operator's Manual page 214

Registering Scan Groups
The Central System emits a free-signal to indicate a MARITEX
radio channel is in idle condition and available for ship-to-shore
calls. The free-signal is detected and recognized by the shipboard
equipment as a permission to start the transmission. Then, the ship-
board operator initiates a call.
You can scan search for the free-signal automatically by register-
ing MARITEX radio channels in scan group(s). The procedure for
registering scan groups for MARITEX use is the same as that which
appears on page 3-7.
1. Press function key [F5] to display the Station menu.
2. Press the [3] key to select Scan Entry. The screen should look
something like Figure 7-2.
Scanning Group List
Group Name :
Ch Dwell Time : 4.5 sec (2.7-4.5 sec)
Mode : AUTO ARQ FEC
Auto Search : OFF ON
No Channel
1
2
3
4
5
6
Figure 7-2 Scan entry screen
3. If Create is not underlined, press [ ], [ ] and the [Enter] key
to underline it.
4. Group Name appears in inverse video, meaning you can enter
scan group name. Enter scan group name; for example,
MARITEX-A.
5. Press the [ ] key to advance the cursor to Ch Dwell Time. The
dwell times is the time in seconds the receiver waits on each
channel before it selects the next channel. The default setting
is 2.7 seconds. Change the setting if necessary.
Scan Entry
Create
Change
Scanning Set Up
Rx Freq Tx Freq Pass/Scan
Pass/Scan
Pass/Scan
Pass/Scan
Pass/Scan
Pass/Scan
Pass/Scan
7-3