VHF Marine Radio Protocols
Intro Operation Customer
Assistance
Warranty
Notice
Main Icons
Secondary Icons
Caution Warning
Installation
Customer
Assistance
Operating Your Radio
29
Nothing Comes Close to a Cobra
®
VHF Mode Programming
USA/International/Canada Channel Maps
Three (3) sets of VHF Channel Maps have been established
for marine use in the USA, Canada, and the rest of the world
(International). Most of the channels are the same for all three
(3) maps, but there are definite differences (see table in the
Appendix on page 62). 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 U icon is the default) flashing.
3. Press Channel Up/Down button to select the
U, I or C icon.
4. Press Call/Enter/Setup button to save this entry
and move to the next Setup mode programming.
VHF Marine Radio Protocols
Intro Operation Customer
Assistance
Warranty
Notice
Main Icons
Secondary Icons
Caution Warning
Installation
Customer
Assistance
Operating Your Radio
28
English
VHF Mode Programming
Active Channel Map Icon
MEMSAMEVOX HI
ROG
VHF
GMRS
T
R
X
U
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, push 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 adjust 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.
Intro Operation Customer
Assistance
Warranty
Notice
Main Icons
Secondary Icons
Caution Warning
Installation
Customer
Assistance
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.
VHF
Squelch Control
MEMSAMEVOX HI
ROG
VHF
GMRS
T
R
X
U
Channel Up/Down Buttons
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