Cobra Electronics MR HH125 - Manual (Page 9)

VHF Marine Radio Protocols VHF Marine Radio Protocols
13 Nothing Comes Close to a Cobra ® 12 English
Getting Started 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 (2)
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 (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.
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
Channel 88.
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 (3) beep error signal will sound.
SCAN Button
Press and release the SCAN 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.
NOTE
Memory channels need to be saved to effectively
enter the Memory Channel mode and scan all
memory channels. See page 25.
High/Low (HI/LO) Power Button
Your radio can transmit selectively at 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 1 watt.
To Toggle Between HI/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.
NOTE
Some channels, frequency bands and countries of use
might not be able to operate in High Power mode.
Backlight/Key Lock Button
Key Locked Buttons
Key Lock Icon
Scan Button
Channel Up/Down Buttons
Currently On Channel 88
HI/LO Power Button
VHF Marine Radio Protocols Operating Your Radio VHF Marine Radio Protocols Operating Your Radio