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.
MEMSAMEVOX HI
ROG
VHF
GMRS
T
R
X
U
SCAN Button
MEMSAMEVOX HI
ROG
VHF
GMRS
T
R
X
U
Channel Up/Down Buttons
MEMSAMEATIS VOX LOMEDHI
ROG
VHF
A
B
GMRS
T
R
X
CIU
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
MEMSAMEVOX HI
ROG
VHF
GMRS
T
R
X
U
Key Locked Buttons
MEMSAMEVOX HI
ROG
VHF
GMRS
T
R
X
U
Key Lock Icon
Speaker/Mic Port
Talk Button
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