Maintenance And

Troubleshooting

Operating Your Radio

Maintenance

•

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 build-up 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 so if you are using alkaline batteries.

Troubleshooting

 

•

 

 

 

 

 

Problem

Possible Cause(s)

Solution(s)

 

 

 

No display on LCD when

Batteries are exhausted

Recharge or

radio is turned On

 

replace batteries

 

Batteries not installed

Remove batteries and

 

properly

reinstall according to

 

 

polarity markings

 

 

 

NiMH batteries run

Batteries are at the

Replace with new

down quickly

end of their life

batteries

 

 

 

Will transmit at

Batteries are low

Recharge or

one (1) watt, but not

 

replace batteries

at five (5) watts

Selected channel is imited

Switch to

 

 

to one (1) watt

another channel

 

 

 

Will not transmit

Selected channel is

Switch to

 

limited to receive only

another channel

 

 

 

No sound from speaker

Volume level is too low or

Re-adjust volume

 

squelch level is too deep

and squelch

 

 

 

No response to

Key lock is On

Press Backlight/

button press

 

Key Lock button

 

 

 

No answer to calls

Out of range of

Switch to five (5)

 

other station

watts or move closer

 

Signal is blocked

Move until you have a “line-

 

by terrain

of-sight” to the other station

 

 

 

Operating Your Radio

Specifications

Specifications

•

 

General

 

Number of Channels

All U.S., Canadian, and International

 

10 NOAA Weather Channels

Channel Spacing

25 kHz

Modulation

16 KOF3E

Input Voltage

7.2 VDC

Battery Life:

2100mAh NiMH: 21 hours, 30 minutes,

5% TX, 5% RX, 90% Stand-by

@ 5 watts, 38 hours @ 1 watt

Current Drain:

40 mA

Stand-by

Receive

200 mA

Transmit

1.8 A @ High power 0.7 A @ Low

Temperature Range

-20˚C to 60˚C

Radio Dimensions

5.5" x 2.2" x 1.4"

 

(14 cm x 5.6 cm x 3.6 cm)

Radio Weight

1.1 lbs (0.5 kg)

Receiver

 

Frequency Range

156.050 to 163.275 MHz

Receiver Type

Double Conversion Super-Heterodyne

Sensitivity:

0.35 uV

20 dB Quieting

12 dB Sinad

0.30 uV

Adjacent Channel Selectivity

-60 dB

Intermodulation and Rejection

-60 dB

Spurious and Image Rejection

-60 dB

AF Output

250 mW @ 8 Ohms

Transmitter

 

Frequency Range: TX

156.025 to 157.425 MHz

RF Output Power

1 and 5 Watts

Spurious Emissions

-60 dB High -55 dB Low

Microphone Type

Condenser

Frequency Stability

+/-5 ppm

FM Hum and Noise

-40 dB

 

 

 

 

44 English

Nothing comes close to a Cobra® 45

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Cobra Electronics MR HH400X VP warranty Maintenance Troubleshooting, Specifications
Page 24 Page 26

MR HH400X VP specifications

The Cobra Electronics MR HH400X VP is a robust marine handheld VHF radio designed for boaters seeking reliable communication on the water. This compact device boasts a variety of features that enhance safety and convenience while navigating the seas.

One of the standout characteristics of the MR HH400X VP is its impressive 6 watts of power output, which allows for a longer communication range. Whether you're planning day trips near the shore or extended voyages further out, this radio ensures you can stay connected with fellow boaters or emergency services when needed.

The device is built with a waterproof rating of IPX7, which means it can withstand being submerged in water for up to 30 minutes. This durability makes it ideal for marine environments where exposure to the elements is a frequent concern. Additionally, the radio is equipped with a rugged construction that can resist drops and impacts, ensuring it can handle the rigors of any boating adventure.

In terms of technology, the MR HH400X VP features an integrated GPS. This capability is essential for boaters who want real-time positioning and navigation information. The built-in GPS not only provides accurate location data but also allows for quick access to distress channels and can transmit your position during emergencies, significantly enhancing safety on the water.

Another notable feature is the Cobra's Rewind-Say-Again function. This innovative technology allows users to replay the last 20 seconds of received transmissions, ensuring no important messages are missed. The bright backlit display and simple interface make it user-friendly, even in low-light conditions.

The radio also includes a dual and triple watch capability, which allows users to monitor two or three channels simultaneously. This functionality is particularly useful for boaters who want to stay informed about both routine communications and emergency channels.

The Cobra MR HH400X VP is powered by a rechargeable lithium-ion battery, providing convenience while minimizing the need for disposable batteries. The high-capacity battery ensures extended usage, making it a reliable companion for long boating trips.

In summary, the Cobra Electronics MR HH400X VP is a feature-rich handheld VHF radio that combines power, durability, and advanced technology. With its waterproof design, integrated GPS, and innovative features, it is a perfect choice for any serious boater looking for reliable communication on the open water.
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