VHF 300 Series Owner’s Manual
Basic Operation
Basic Operation
Turning the Radio On and Off
IMPORTANT:
To use the DSC capabilities of your radio, you must first enter an MMSI
number. See
To turn on the radio, press and hold the
16/9
key (North American models) or
16+
key
(International models). If you have not entered a Mobile Maritime Safety Identity (MMSI)
number, you must press the
CLEAR
key to access the Home screen. To turn off the radio,
press and hold the
16/9
key or the
16+
key.
TIP:
For information on enabling auto power-on, see
.
Adjusting the Volume
TIP:
To set the appropriate volume level, first turn the squelch level to off, and then adjust
the volume. See below for more information on adjusting the squelch level.
1. Press the
VOL/SQL
key until the screen displays “CURRENT VOLUME.”
2. Turn the
Channel
knob on the handset to adjust the level.
Adjusting the Squelch
1. Press the
VOL/SQL
key until the screen displays “CURRENT SQUELCH.”
2. When receiving, rotate the
Volume
knob counterclockwise until you hear audio.
3. Rotate the
Volume
knob clockwise until there is no background noise.
Selecting Channels
Turn the
Channel
knob clockwise or counterclockwise to change channels. See
lists of International, Canadian, and USA channels.
Transmitting with the Radio
1. Select the appropriate channel.
2. Check to ensure that the channel is clear before transmitting. The Federal
Communications Commission (FCC) and international regulations require that you not
obstruct the communications of others.
3. Press the
PTT
key on the handset to transmit on the current channel. The
TX
icon is
displayed at the top of the screen.
4. Speak your message and release the
PTT
key.
NOTE:
Five minutes is the maximum amount of time for transmission. After you have
pressed
PTT
key for five minutes, PTT is disabled until you release the
PTT
key.
