Cobra Electronics MR HH300 VP - Manual (Page 18)

Transmit power output
Your radio can Transmit selectively at one or five watts of
power. Cobra ® suggests you maintain the low power setting
for short-range communications, to conserve battery life
and to avoid overpowering nearby stations with your signal.
Use the high power setting for long-range communications
or when you do not receive a response
to a signal sent at one watt.
To toggle between the high and low power modes:
1. Press the High/Low Power button. The LCD will show
which mode is in effect.
Some channels are restricted to use at a maximum of
one watt. Your radio will automatically set the power
to Low Power mode when you select those channels.
While using the U.S.A. channel map, if, in an emergency,
you need to increase the output power on Channel 13 and
Channel 67 for your signal to be heard, you can override
the Low Power mode by pressing and holding the High/
Low Power button.
Backlight
The LCD will be illuminated by the Backlight as long as any key is pressed and will
remain on for five seconds after the button is released.
If you need to turn on the backlight
without disturbing any settings:
1. Press the Backlight/Key Lock button. The backlight will
remain on for 10 seconds.
If the backlight is on, a press of the Backlight/Key Lock
button will turn it off.
31 Nothing comes close to a Cobra ®
Getting Started
Intro Operation Customer
Assistance
Warranty
Notice
Secondary Icons
Caution Warning
Installation Customer
Assistance
Operating Your Radio
Low Power Mode
High Power Mode
High/Low Power Button
Backlight/Key Lock Button
30 English
Getting Started
U.S.A./International/Canada channel maps
Three sets of VHF Channel Maps have been established for marine use in the
U.S.A., Canada and the rest of the world (International). Most of the channels are
the same for all three maps, but there are definite differences (see table on pages
14 through 21). Your radio has all three maps built into it and will operate correctly
in whichever area you choose.
To set your radio for the area
in which you will be using it:
1. From Standby mode, press and hold the Weather/UIC
button for two seconds. The radio will shift one channel
map and the Active Channel Map icon on
the LCD will show the change on the LCD.
Repeat step one to shift to the next channel map(s).
Channels
Your radio will receive and transmit VHF signals
on the Channel indicated on the LCD. You can change
the Channel at any time using the Channel Up and
Channel Down buttons.
To change channels:
1. Press the Channel Up or Channel Down button.
You are on Channel 88, pressing the Channel Up
button will advance to Channel 1. If you are on
Channel 1, pressing the Channel Down button
will advance to Channel 88.
You can hold the Channel Up or Channel 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 beep error signal will sound.
Intro Operation Customer
Assistance
Warranty
Notice
Secondary Icons
Caution Warning
Installation Customer
Assistance
Operating Your Radio
Weather/UIC Button
Channel Up/Down Buttons
Currently On Channel 88
Active Channel Map Icon