background image

No display on LCD when

radio is turned on

Batteries are exhausted

Batteries not 

installed properly

Replace batteries

Remove batteries and

reinstall according to

pola rity markings

Will transmit at 

one watt, but not 

at five watts

Batteries are low

Selected channel is

limited to one watt

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

Key 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 five 

watts or move closer

Move until you have 

a “line-of-sight” to 

the other station

41

Nothing 

comes close to a Cobra

®

Specifications

Intro

Operation

Customer
Assistance

Warranty

Notice

Secondary Icons

Caution

Warning

Installation

Customer
Assistance

Operating Your  Radio

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: 

1500mAh NiMH:

5% TX, 5% RX, 90% stand-by

15.5 hours @ 5 watts, 28 hours @ 1 watt

Current drain:  

Stand-by

40 mA

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:  

20 dB Quieting

0.35 uV

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

40 English

Maintenance and 
Troubleshooting

Intro

Operation

Customer
Assistance

Warranty

Notice

Secondary Icons

Caution

Warning

Installation

Customer
Assistance

Operating Your  Radio

Problem

Possible Cause(s)

Solution(s)

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

Summary of Contents for MR HH300

Page 1: ...nnel you can select for your area Customer Assistance Should you encounter any problems with this product or not understand its many features please refer to this owner s manual If you require further...

Page 2: ...Channel 16 9 Instant access to priority Channel 16 and calling Channel 9 Dual Watch Lets you monitor two channels at once Channel 16 and one user programmable channel Product Features Weather Channel...

Page 3: ...24 Batteries and charger 25 Operating Your Radio Getting started 28 Standby Receive and transmit 33 NOAA all hazards weather radio and alert 35 Advanced operation 36 Maintenance 40 Troubleshooting 40...

Page 4: ...temperatures below 4 F 20 C or above 140 F 60 C KEEP your radio at least three feet 0 9m away from your vessel s magnetic navigation compass DO NOT attempt to service any internal parts yourself Have...

Page 5: ...FCC license forms and applications for ship and land stations can be downloaded through the Internet at www fcc gov forms Forms can also be obtained by calling the FCC at 888 225 5322 International st...

Page 6: ...ncy or if you are testing your radio When you are on land Voice calling To call another vessel or a shore installation such as a lock or bridge tender Make sure your radio is on Select Channel 16 and...

Page 7: ...ulties and before your situation becomes an emergency Use the emergency message procedures only after your situation has become grave or you are faced with a sudden danger threatening life or property...

Page 8: ...repeat the call beginning at item 3 above Keep the radio nearby Even after your message has been received the Coast Guard can find you more quickly if you can transmit a signal for a rescue boat to ho...

Page 9: ...4 84A 85 85A 86 86A 87 87A 88 For calls to marine operators at public coast stations You can make and receive telephone calls through these stations Port operations Channels 1A 5A 12 14 20A 63A 65A 66...

Page 10: ...156 800 17 156 850 156 850 1 Watt CAN Channel Use 01 Public correspondence marine operator 01A Port operations and commercial VTS in selected areas 02 Public correspondence marine operator 03 Public...

Page 11: ...only 24 Public correspondence marine operator 25 Public correspondence marine operator 26 Public correspondence marine operator 27 Public correspondence marine operator 28 Public correspondence marine...

Page 12: ...ions and commercial VTS in selected areas 64 Public correspondence marine operator port operations ship movement 64A U S Government only Canada commercial fishing 65 Public correspondence marine opera...

Page 13: ...tration on page A3 Channel Use 78 Public correspondence marine operator 78A Non commercial recreational 79 Port operations ship movement 79A Commercial also non commercial only in Great Lakes 80 Port...

Page 14: ...flashing ALRT icon on the LCD to signal that a weather alert is being broadcast To hear the warning itself you will need to switch to the Weather Channel you selected Test To test this system NOAA bro...

Page 15: ...ore they can be used CAUTION The gasket on the base of the battery pack is essential for the radio to be waterproof Be certain that it is not dislodged and that it fits properly into the radio CAUTION...

Page 16: ...eable NiMH batteries can be recharged NOTE If the drop in charger is to be used on a boat Cobra recommends you attach it to a shelf or bulkhead using the screw holes provided to prevent damage due to...

Page 17: ...on your radio Throughout this manual you will be instructed to press or to press and hold buttons on the radio Press means a momentary press then release press and hold means to hold the button down W...

Page 18: ...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 ar...

Page 19: ...stance Operating Your Radio Intro Operation Customer Assistance Warranty Notice Main Icons Secondary Icons Caution Warning Installation Customer Assistance Talk Button Transmit Icon 32 English Getting...

Page 20: ...Warning Installation Customer Assistance Operating Your Radio Intro Operation Customer Assistance Warranty Notice Main Icons Secondary Icons Caution Warning Installation Customer Assistance Channel U...

Page 21: ...d Operation Weather alert signal When NOAA broadcasts a Weather Alert Signal and your radio is in the Weather Alert mode you will hear a continuous audible tone and the Alert icon will flash on the LC...

Page 22: ...Icon a Talk or Channel Up Down b 38 English Advanced Operation During Dual Watch while receiving an incoming transmission you can choose from the following a Press the Talk button to remain on that d...

Page 23: ...ure 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 hetero...

Page 24: ...anty ro Operation Customer Assistance Warranty Notice cons Caution Warning Installation Customer Assistance Warranty Limited 3 Year warranty For products purchased in the U S A Cobra Electronics Corpo...

Page 25: ...e www cobra com The Cobra line of quality products includes CB Radios microTALK Radios Radar Laser Detectors Safety Alert Traffic Warning Systems Accessories GPS Global Positioning System HighGear Acc...

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