VHF Marine Radio Protocols
Operating Your Radio
19
Nothing
Comes Close to a Cobra
®
Setup Mode Programming
International/Canada/USA Channel Maps
Three (3) sets of VHF Channel Maps have been established
for marine use: International, Canada and USA. Most of the
channels are the same for all three (3) maps, but there are
definite differences (see table in the Apendix on page 50).
Your radio has all three (3) maps built into it and will operate
correctly in whichever area you choose.
To Set Channel Map Operating Area:
1.
The
Channel Map
mode is the second mode on
the
Marine (VHF) Setup
programming.
2. U, I
and
C
will display, with the current setting
(the
I
icon is the default) flashing.
3.
Press
Channel Up/Down
button to select the
I, C
or
U
icon.
4.
Press
Call/Enter/Setup
button to save this entry
and move to the next
Setup
mode programming.
NOTE
One or two of the channel maps might have been
disabled for sales of this radio in some countries.
Call Tone Alert
If
Call Tone Alert
is set to On, the radio will alert you to a call
from a compatible Cobra radio with a Call Alert.
To Set Call Tone On or Off:
1.
Display will show
Call Tone
icon and
ON
or
OFF
flashing.
2.
Press Channel
UP/Down
button to select
ON
or
OFF
.
3.
Press the
Call/Enter/Setup
button to save this entry
and move to the next
Setup
mode programming.
The
Call Tone
icon will show in the
Standby
mode
when set to
ON
.
Call Tone Select
This setting will also allow you to transmit a unique
Call Tone
alert to identify your radio when you transmit
messages. You can select from one of 10 different
Call Tone
signals.
Call Tone Alert
VHF Marine Radio Protocols
Operating Your Radio
18 English
Setup Mode Programming
Active Channel Map Icon
Channel Up/Down Buttons
Squelch Control
Squelch Control
filters weak signals and radio frequency (RF)
noise so that you will clearly hear the signals you want.
The
Squelch Control
on this radio is set through the following
keypad operation.
To Set Squelch Control:
1.
With the power On, press and hold
Call/Enter/Setup
button to access the
Setup
menu.
2.
Squelch control will be the first menu item to appear.
Press the
Channel Up
and
Channel Down
buttons to
set level. The signal level bar graph shows squelch
level while you are in
Setup
mode on the squelch
adjust function.
3.
To tune your squelch, press the
Channel Down
button until you hear a hissing sound, then press
and release the
Channel Up
button until the hissing
stops. This will establish a “Baseline” squelch.
4.
By pressing the
Channel Up
button further, you will
filter weak and medium strength signals. By pressing
Channel Down
button, you will receive weaker
signals.
5.
Press the
Call/Enter/Setup
button to save this entry
and move to the next
Setup
mode programming.
NOTE
If the
Squelch
is set so that you can hear a continuous
hissing sound, the
Memory Scan
and
Tri-Watch
functions will be blocked.
Squelch Control
Channel Up/Down Buttons
MRHH475EU_MANL_vC.qx:MRHH475_ENG_Body 12/28/09 9:44 AM Page 18
