Cobra Electronics Corporation MRHH500 Manuel D’Utilisation

Nothing Comes Close to a Cobra

®

          

 

Cobra’s Burp feature allows the operator to expel water from

inside the speaker grill. This is especially useful if the radio is

dropped overboard or during extreme foul weather

conditions. In these conditions, water can become trapped in

the speaker grill and muffle the audio.  

1. Press and release the 16/9 and SCAN keys at the 

same time.  

2. The Burp tone(s) at maximum level will sound 

from the internal speaker for eight seconds.  

3. During this time, the matrix will display BURP.

4. Hold the radio with the speaker grill down to help 

the water drain out.

5. After an 8-second interval, the radio will return to

standby.

This radio is designed to float if dropped overboard. The

orange center makes it visible and easy to retrieve. This

rugged radio is also designed to meet JIS7 (IPX7)

specifications. This means it’s designed to operate properly

after being submerged in one meter deep water for 30

minutes.

Do not leave the radio floating in water permanently.

This could cause premature corrosion of the battery

contacts and other damage.

The radio is only designed to float with its included

Lithium-ion battery. Using other approved batteries

might cause the radio to sink. This includes the optional

AA battery tray, depending on the weight of the AA

batteries used.

 

 

 

 

 

 

No display on LCD when

radio is turned On

Batteries are exhausted

Batteries not installed

properly

Recharge or 

replace batteries

Remove batteries and

reinstall according to

polarity markings

Batteries run 

down quickly

Batteries are at the 

end of their life

Replace with new

batteries

Will transmit at 

one (1) or three (3) watts,

but not at six (6) watts

Batteries are low

Selected channel is imited

to one (1) watt

Recharge or 

replace batteries

Switch to 

another channel

Will not transmit

Selected channel is

limited to receive only

Switch to 

another channel

No sound from speaker

Volume level is too low or

squelch level is too deep

Re-adjust volume 

and squelch

No response to 

button press

Button lock is On

Press Backlight/

Key Lock button

No answer to calls

Out of range of 

other station

Signal is blocked 

by terrain

Switch to three (3) or six

(6) watts or move closer

Move until you have a “line-

of-sight” to the other station

Very little maintenance is required to keep your CobraMarine VHF radio 

in good operating condition:

Keep the radio and charger clean by wiping with a soft cloth and mild detergent.

Do not use solvents or harsh or abrasive cleaners, which could damage the case

or scratch the LCD screen.

If the radio is exposed to salt water, wipe with a soft, moist cloth at least once a

day to prevent buildup of salt deposits, which could interfere with button

operation.

If the radio will be stored for a long period, such as over the winter, 

remove the batteries from the battery tray and store them in a separate 

package. This is especially important if you are using alkaline batteries.

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