10 VHF 300 Series Owner’s Manual
Basic Operation
To operate the hailer:
1. Select PA > HAILER. Sounds received through the horn can be heard through the radio
speaker.
2. Press and hold the PTT key and speak your announcement.
3. Turn the Channel knob to adjust the horn volume.
4. Release the PTT key to listen.
5. Select EXIT to return to the Home screen.
Using the Foghorn
You must provide and install an optional hailer horn on the deck or tower to use the foghorn
feature. See the VHF 300 Series Installation Instructions for installation information.
The foghorn is part of the PA system of your radio. You can sound the foghorn through
a hailer horn or an external speaker. Your radio can sound the horn automatically using
standard, pre-dened patterns, or you can sound the horn manually.
Similar to the hailer, when you are manually operating the foghorn, sounds received through
the horn can be heard through the external speaker between soundings.

Automatically Sounding the Foghorn

1. Select PA > FOG.
2. Select AUTO from the list.
3. Select an item from the following options. The radio alternates between sounding the
pattern of tones or rings and receiving radio trafc.
UNDERWAY
•
STOPPED
•
SAILING/FISHING
•
RESTRICT/TOW
•
UNDER TOW
•
PILOT
•
AT ANCHOR
•
AGROUND
•
4. Turn the Channel knob to adjust the volume of the horn.
5. Select EXIT to turn off the automatic soundings and return to the Home screen.

Manually Sounding the Foghorn

NOTE: When you manually sound the horn, the radio will not alternate to receive radio
trafc between horn soundings.
To sound the fog horn:
1. Select PA > FOG.
2. Select MANUAL from the list. Sounds received through the horn can be heard through
the radio speaker.