Cobra Electronics Corporation MRHH400 Manual De Usuario

Nothing comes close to a Cobra

®

Three (3) 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 12 through 21). Your radio has all three (3) maps built into it and will
operate correctly in whichever area you choose.

1. From Standby mode, press and hold the Weather/UIC

button for two (2) seconds. The radio will shift one
channel map and the Active Channel Map icon on 
the LCD will show the change on the LCD.

2. Repeat step 1 to shift to the next channel map(s).

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. 

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 (3) beep error signal will sound.

Your radio can transmit selectively at one (1) or 
five (5) 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 (1) watt.

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 (1) watt. Your radio will automatically set 
the power to Low Power mode when you select 
those channels.

The LCD will be illuminated by the backlight as long 
as any key is pressed and will remain on for five (5) 
seconds after the button is released.

1. Press the Backlight/Key Lock button. The 

backlight will remain On for five (5) seconds.

If the backlight is On, a press of the Backlight/
Key Lock button will turn it Off.