VHF Marine Radio Protocols
Intro
Operation
Customer
Assistance
Warranty
Notice
Main Icons
Secondary Icons
Caution
Warning
Installation
Customer
Assistance
Operating Your Radio
25
Nothing
Comes Close to a Cobra
®
Getting Started
Channel Up/Down Buttons
Your radio will
Receive (Rx)
and
Transmit (Tx)
VHF/GMRS signals on
the channel indicated on the LCD display. You can change the channel
at any time using the
Channel Up/Down
buttons.
To Change Channels:
Press the
Channel Up/Down
button.
If you are on Channel 88, pressing the
Channel Up
button will
advance to Channel 01. If you are on Channel 01, pressing
the
Channel Down
button will advance to Channel 88. (GMRS
highest channel is 22, then will advance to channel 1. Weather
highest channel is 10, then advances to channel 1).
You can press and hold the
Channel Up/Down
button for fast
advance. The beep sound will occur only at the first press of the
button and not during fast advance.
If the new channel selected is restricted to low power, the radio
will automatically switch to
Low Power
mode and the
Low
Power
icon will appear on the LCD.
If the radio is in the
Key Lock
mode, the channel will not change
and the three (3) beep error signal will sound.
SCAN Button
Press and release the
SCAN
button to enter all scanning modes
- Marine, GMRS and memory. See the
Advanced Operation
section has more details on using the Scan modes. The
SCAN
icon will display on the LCD display. Scanning begins at lower
channels, and scans to higher channels. Press the
Channel Up/
Down
button to change the scan direction.
MEM
SAME
VOX
HI
ROG
VHF
GMRS
T
RX
U
SCAN Button
MEM
SAME
VOX
HI
ROG
VHF
GMRS
T
RX
U
Channel Up/Down Buttons
MEM
SAME
ATIS VOX LOMEDHI
ROG
VHF
A
B
GMRS
T
RX
C
I
U
MR HH350/450/500
LCD DISPLAY UPDATE
REV. 7.19.17
Currently On Channel 88
VHF Marine Radio Protocols
Intro
Operation
Customer
Assistance
Warranty
Notice
Main Icons
Secondary Icons
Caution
Warning
Installation
Customer
Assistance
Operating Your Radio
24 English
Getting Started
Radio Speaker and Microphone
The internal
Radio Speaker
and
Microphone
are located on the
bottom front face of the radio below the lower control buttons.
An optional
Speaker/Microphone
port is located at the top
of the radio between the antenna and the
Power/Volume
control. Unthread the
Speaker/Microphone
port cover to access and
install an optional Cobra speaker or microphone into this port.
Talk Button
Press and hold the
Talk
button to transmit messages. Release
the
Talk
button to stop transmitting.
Backlight/Key Lock Button
To Display the Backlight Momentarily:
Press the
Backlight/Key Lock
button. The backlight will
remain On for 10 seconds. If the backlight is already On,
another press of the
Backlight/Key Lock
button
will turn it Off.
Key Lock
To prevent accidental changes to your settings, you can
lock all of the following buttons:
n
Channel Up
Button
n
Channel Down
Button
n
Band
Button
n
REWIND
Button
n
SCAN
Button
n
MEM/ESC
Button
n
WX/H-M-L
Button
n
16/9
Button
n
TRI-WATCH
Button
n
Call/Enter/Setup
Button
To Lock or Unlock the Buttons:
Press and hold the
Backlight/Key Lock
button for two (2)
seconds. The
Key Lock
icon will appear or disappear
in the LCD. When
Key Lock
is On, pressing any of the
listed buttons on the front of the radio will result in a three
(3) beep error message.
Both the
Backlight/Key Lock
button and the
Talk
button
are active — you can
Receive (Rx)
or
Transmit (Tx)
a message with
Key Lock
On, but you cannot change the
channel.
Backlight/Key Lock Button
MEM
SAME
VOX
HI
ROG
VHF
GMRS
T
RX
U
Key Locked Buttons
MEM
SAME
VOX
HI
ROG
VHF
GMRS
T
RX
U
Key Lock Icon
Speaker/Mic Port
Talk Button