Fog Horn Frequency; Service Menu - Furuno FM-4850 Operator's Manual

GENERAL SETUP
Select whether to reset the items to factory settings. If you select "YES",
Step 2
the radio will restart and is reset to factory settings. If you select "NO", the
radio returns to the previous screen.

10.7 Fog Horn Frequency

This feature allows you to set the fog horn frequency according to the size of your
vessel.
Note
The default fog horn frequency is 400Hz. In most cases, do not change the
frequency unless the vessel is very large.
Step 1 Press the Menu/DSC control until the "MAIN MENU" screen appears.
Go to "GENERAL SETUP > FOG HORN FREQ".
Step 2
Select a "FOG HORN FREQ".
Step 3
Press the Menu/DSC control to save the setting and return to the
Step 4
previous screen.

10.8 Service Menu

This menu is available only for your dealer.
FM-4850 Operator's Manual
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