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VHF Marine Radio Protocols

Nothing

Comes Close to a Cobra

12 English

Getting Started

Backlight/Key Lock Button

The LCD will be illuminated by the backlight as long as any
button is pressed and will remain On for 10 seconds after the
button is released.

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,
a 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 buttons on the front of the the radio along with the
Squelch Defeat button.

To Lock or Unlock the Buttons:

Press and hold the

Backlight/Key Lock

button for two

seconds. The

Key Lock

icon will appear or disappear in

the LCD. When

Key Lock

is On, pressing any of the buttons

on the front of the radio will result in a three beep error
message.
Both the

Backlight/Key Lock

button and the

Talk

button are

active — you can

Receive (Rx)

Transmit (Tx)

a message

with

Key Lock

On, but you cannot change the channel.

Channel Up/Down Buttons

Your radio will

Receive (Rx)

and

Transmit (Tx)

VHF 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

buttons.

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 4 digit

channel.
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 buttons 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 beep error signal will sound.

SCAN Button

Press and hold the

SCN

button to scan all channels.

The

SCAN

icon will display on the LCD display. Scanning

begins at lower channels, and scans to higher channels.
Press

Channel Up/Down

button to change the scan direction.

When a signal is received in

SCAN

mode, the radio will pause

10 seconds before resuming

SCAN

operation.

The scan will stop when the

Talk

button is pressed.

Intro

Operation

Customer

Assistance

Warranty

Notice

Main Icons

Secondary Icons

Caution

Warning

Installation

Customer

Assistance

NOTE

Memory channels need to be saved to effectively enter
the

Memory Channel

mode and scan all memory

channels. See page 25.

High/Medium/Low (HI/MED/LO) Power Button

Your radio can transmit selectively at .5, 1 or 3 watts of power.
Cobra suggests you maintain the low power setting for
short-range communication. You will conserve battery life
and avoid overpowering nearby stations by using a low
power signal. Use the

High Power

setting for long-range

communications or when you do not receive a response
to a signal sent at .5 or 3 watt.

To Toggle Between Hi/Med/Lo Power Modes:

Press the

Power Level/Weather

button. The LCD

will show which mode is in effect. Some channels are
restricted for a maximum use of 1 watt. Your radio will
automatically set the power to

Low Power

mode when

you select those channels.

Intro