Cobra MR HH450 DUAL User manual

MR HH450 DUAL
Owner’s Manual
Nothing Comes Close to a Cobra
®
English A1 English
Our Thanks to You and
Customer Assistance
Intro Operation Customer
Assistance
Warranty
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Main Icons
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Caution Warning
Installation Customer
Assistance
Introduction
Customer Assistance
Intro Operation Customer
Assistance
Warranty
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Main Icons
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Caution Warning
Installation Customer
Assistance
A2 English
Radio Controls
and Indicators
Intro Operation Customer
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MEMSAMEVOX HI
ROG
VHF
GMRS
T
RX
U
Instant
Channel
16/9 Button
Channel
Up Button
ON/OFF/
Volume Control
Speaker/
Microphone
External Cover
Antenna
Backlit
LCD
Screen
Tri-Watch
Button
Battery
Backlight/
Key Lock
Button
Memory/Escape
Button
Push
to Talk
Button
Channel
Down
Button
Speaker
Belt Clip
Battery
Door
Screw
Power Level/
Weather Button
SCAN Button
Call/Enter/
Setup Button
VHF/GMRS
Microphone
Rewind-Say-Again
®
Button
Band Button
©2022 Cobra Electronics Corporation™
www.cobra.com
Thank you for purchasing a Cobra Marine®VHF radio.
Properly used, this Cobra®product will give you
many years of reliable service.
How Your Cobra Marine VHF Radio Works
This radio is a battery-powered portable transceiver for use afloat. It gives you 2-way
vessel-to-vessel and vessel-to-shore station communications, primarily for safety and
secondarily for navigation and operational purposes. With it, you can call for help, get
information from other boaters, talk to lock or bridge tenders and make radiotelephone
calls to anywhere in the world through a marine operator.
Besides 2-way communications, in the U.S.A., the radio can provide quick
access to receive eight NOAA (National Oceanographic and Atmospheric
Administration) and two Canadian weather channels for alerting you to weather
emergencies with a tone on a weather channel 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 assistance
after reading this manual, Cobra Electronics offers the following
customer assistance services:
For Assistance In The U.S.A.
Monday-Friday 9:00 AM- 5:00 PM EST
Call: 800-543-1608
SERVICE
Monday-Thursday 9:00AM-5:00PM EST
Call: 800-543-1608
Have questions? We can help. Contact us at 800-543-1608
M-F 9:00AM-5PM EST
For Assistance Outside the U.S.A.
Contact Your Local Dealer

MEMSAMEVOX HI
ROG
VHF
GMRS
T
RX
U
A3 English
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Backlit LCD (Liquid Crystal Display) Screen •
UIC Active Channel
Map Icons
Button Lock Icon
Low/Medium/High
Power Icons
Power Settings
Selectable power settings produce
1, 3 or 6 Watts (marine) and 1, 2 or 3 Watts
(GMRS) of output power for
near or distant calling.
USA/International/Canada Channels
Allows operation on any of the three (3)
different channel maps established for
these areas.
All NOAA Weather Channels
Instant access to all National Weather
Channels, 24 hours a day.
Submersible to JIS7/IPX7 Standards
Waterproof to 3.3 ft (1 m) of water
for 30 minutes.
Button/Key Lock
Prevents accidental setting changes
when button lock is set.
Channel Scan/Memory Scan
Use to scan through unlimited
channels or memory locations
to find conversations in progress.
Matrix Display
The display at the bottom of the LCD screen
displays text letting the user know the
current radio mode, function or operation.
AA Battery Compatible
Good for emergency backup.
Includes AA battery tray (P/N CM 110-024).
Instant Channel 16/9
Provides instant access to priority Channel
16 and calling Channel 9.
Tri-Watch
Use to monitor three (3) channels
at once — Channel 16 and two (2)
programmable channels.
Floating
This radio will float if dropped overboard.
Must use included battery to float.
120V/12V Charger Included
Use to charge battery pack, at home,
in a car or in a boat.
Product Features •
Backlit LCD Screen
and Product Features Product Features
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Bands
Dual VHF (Very High Frequency) and GMRS
(General Mobile Radio Service) bands allow
you to use different frequencies while using
this radio either on land or water. VHF can
be used for two-way vessel-to-vessel and
vessel-to-shore station communications.
GMRS can be used for small group
communication such as in a general
residential area or during recreational
group outings. Note: GMRS radio usage
requires an FCC License.
Rewind-Say-Again®
Replays missed VHF and GMRS calls.
Locking Desktop Charger
Holds the radio or battery in place while
charging. Vertical or horizontal mounting.
Call Tones (Selectable)
10 selectable call tones
Emergency Weather Alert with SAME
Can alert you with an audible tone and visual
alarm if threatening weather is nearby. The
SAME alerts provide you with additional
alerts for specific local areas.
Speaker/Mic Jack
Allows connecting optional Cobra
Lapel Speaker/Mic and other Cobra
accessories.
Unlimited Memory Channels
Allows programming of unlimited
VHF and GMRS memory channels.
15 GMRS Channels
Seven (7) shared with GMRS/FRS and
eight (8) GMRS only.
121 Privacy Codes
Allows semi-secure communications,
creating up to 1815 privacy combinations
(38 CTCSS codes-83 DCS codes).
Signal Strength Meter
Shows the strength of incoming or outgoing
signals.
Noise Canceling Microphone
Reduces effect of environmental
noise when speaking.
Illuminated Buttons
Allows high visibility of all function buttons.
Roger Beep Tone (Selectable)
Confirmation tone indicates the completion
of the user’s transmission
and signals to others it is clear to talk.
On or Off selectable.
BURP
The Cobra exclusive BURP feature expels
water from the speaker grill if the unit is
dropped in the water or is subjected to
extreme rain and weather.
Product Features (continued) •
A4 English
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Introduction Notes
Call Alert Icon
Weather Alert Icon
Frequency Band Icons
Roger Beep Icon
Battery Power Icon
Memory Icon
Matrix Display
Weather Icon
Active Channel Icon
Transmit and
Receive Icons
Key Tone Icon
Signal Level
Icon
Left blank intentionally for your notes
Rewind-Say-Again®Icon
VOX Icon
S.A.M.E. Icon

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1
Nothing Comes Close to a Cobra®
Table of Contents
Introduction
Our Thanks to You ..............................................A1
Customer Assistance ............................................A1
Radio Controls and Indicators ......................................A2
Backlit LCD (Liquid Crystal Display) Screen............................A3
Product Features ...............................................A3
Important Safety Information........................................2
General Precautions ..............................................3
Recommendations for Marine Communication ..........................4
VHF Marine Radio Protocols
Radio Check Procedure............................................5
VHF Radio Procedures and SAME ....................................6
Installation
Included in this Package..........................................16
Install/Remove Antenna ..........................................17
Wrist Strap and Belt Clip..........................................18
Batteries and Charger............................................19
Operating Your Radio
Getting Started .................................................22
VHF Mode Programming ..........................................27
Weather Mode Programming ......................................27
GMRS Mode Programming ........................................38
Advanced Operation (Rewind-Say-Again, Tri-Watch, BURP, etc.)............44
Floating Feature ................................................50
Operating Your Radio ............................................51
Maintenance and Troubleshooting ..................................56
Specifications..................................................57
Warranty and Trademark
Limited 3-Year Warranty..........................................58
Trademark Acknowledgement .....................................58
Customer Service
Product Service ................................................59
FCC Licensing Information
VHF Licensing Information ........................................60
GMRS Licensing Information.......................................62
Appendix
GMRS/FRS Frequency Allocation and Compatibility ......................63
VHF Marine Channel Assignments...................................64
Weather Channel Assignments .....................................79
Optional Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
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3
Nothing Comes Close to a Cobra®
General Precautions
General Precautions •
The following WARNINGS and NOTICE information will make you aware of RF exposure
hazards and how to assure you operate the radio within the FCC RF exposure limits
established for the radio.
WARNINGS
Your radio generates electromagnetic RF (radio frequency) energy when it is transmitting.
To ensure that you and those around you are not exposed to excessive amounts of that
energy, DO NOT touch the antenna when transmitting. KEEP the radio at least
two (2) inches (5 cm) away from yourself and others when transmitting.
DO NOT operate with more than a duty cycle of 5% transmit, 5% receive and
90% standby. The radio is transmitting when the Talk button is pressed and the transmit
information shows on the LCD screen.
ALWAYS use only Cobra authorized accessories.
DO NOT operate the radio in an explosive atmosphere, near blasting sites,
or in any area where signs are posted prohibiting radio transmissions.
NEVER place the transceiver or microphone/speaker where they might interfere
with operation of your vessel or cause injury.
DO NOT allow children or anyone unfamiliar with proper procedures to operate
the radio without supervision.
Failure to observe any of these warnings may cause you to exceed FCC RF exposure
limits or create other dangerous conditions.
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2English
Important Safety Information
Introduction
Important Safety Information •
Before installing and using your Cobra VHF/GMRS Dual Band radio, please
read these general precautions and warnings.
Warning and Notice Statements
To make the most of this radio, it must be installed and used properly.
Please read the installation and operating instructions carefully before installing
and using the radio. Special attention must be paid to the WARNING and NOTICE
statements in this manual.
WARNING
Statements identify conditions that could result in personal injury or loss of life.
NOTICE
Statements identify conditions that could cause damage to the radio
or other equipment.
Safety Training Information
This Cobra VHF/GMRS Dual Band radio also complies with the following guidelines and
standards regarding RF energy and electromagnetic
energy levels as well as evaluation of those levels for human exposure:
n FCC OET Bulletin 65 Edition 97-01 Supplement C, Evaluating Compliance with FCC
Guidelines for Human Exposure to Radio Frequency Electromagnetic Fields.
n American National Standards Institute (C95.1-1992), IEEE Standard for Safety Levels
with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz
to 300 GHz.
n American National Standards Institute (C95.3-1992), IEEE Recommended Practice for
the Measurement of Potentially Hazardous Electromagnetic
Fields — RF and Microwave.
n Industry Canada RSS-102-Radio Frequency (RF) Exposure Compliance of
Radiocommunication Apparatus (All Frequency bands).
Conformité d’exposition de la fréquence du Canada RSS-102-Radio d’industrie (rf) de
l’appareillage de communication par radio (toutes les bandes de fréquence).
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Industry Canada Antenna Notice
Under Industry Canada regulations, this radio transmitter may only operate using an antenna
of a type and maximum (or lesser) gain approved for the transmitter by Industry Canada.
To reduce potential radio interference to other users, the antenna type and its gain should
be so chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than that
necessary for successful communication.
Avis d’antenne du Canada d’industrie
Conformément à la réglementation d’Industrie Canada, le présent émetteur radio peut
fonctionner avec une antenne d’un type et d’un gain maximal (ou inférieur) approuvé
pour l’émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage
radioélectrique à l’intention des autres utilisateurs, il faut choisir le type d’antenne et son gain
de sorte que la puissance isotrope rayonnée quivalente (p.i.r.e.) ne dépassepas l’intensité
nécessaire à l’établissement d’une communication satisfaisante.

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5
Nothing Comes Close to a Cobra®
Radio Check Procedure
4English
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General Precautions
Introduction
NOTICE
Your radio is waterproof only when the batteries are properly installed.
AVOID using or storing the radio at temperatures below -4˚F (-20˚C) or above
140˚F (60˚C).
KEEP your radio at least 3 ft (0.9 m) away from your vessel’s magnetic
navigation compass.
DO NOT attempt to service any internal parts yourself. Have any necessary
service performed by a qualified technician.
This radio is supplied with a lithium-ion (LiON) rechargeable battery pack.
nUse only the Cobra charger to recharge the lithium-ion (LiON) battery pack.
nDo not short circuit the battery pack.
nWhen replacing the batteries, dispose of the old batteries properly. Batteries
may explode if disposed of in a fire.
Changes or modifications to your radio MAY VOID its compliance with
FCC (Federal Communications Commission) rules and make it illegal to use.
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Recommendations for Marine Communication •
The frequencies your radio uses are set aside to enhance safety afloat and for vessel
navigation and operational messages over a range suitable for nearshore voyages.
If the 6 watt maximum output of your radio is not sufficient for the distances you travel from
the coast, consider a higher powered handheld or installing a Cobra Marine fixed mount radio
with up to 25 watts of output power. (Visit www.cobra.com or your local dealer for model
availability.)
If traveling far offshore, you should consider adding even more powerful radio equipment
such as HF single side band or satellite radio for your vessel.
The U.S. Coast Guard does not endorse cellular telephones as substitutes for marine
radios. They generally cannot communicate with rescue vessels and, if you make
a distress call on a cellular telephone, only the party you call will be able to hear you.
Additionally, cellular telephones may have limited coverage over water and
can be hard to locate. If you do not know where you are, the Coast Guard will have difficulty
finding you if you are using a cellular telephone.
However, cellular telephones can have a place on board where cellular coverage
is available — to allow social conversations and keep the marine frequencies
uncluttered and available for their intended uses.

7
Nothing Comes Close to a Cobra®
VHF Marine Radio
Procedures
6English
VHF Marine Radio
Procedures
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VHF Marine Radio Protocols
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Installation
VHF Marine Radio Procedures •
Maintain Your Watch
Whenever your boat is underway, the radio must be turned On and be tuned to Channel 16
except when being used for messages.
Power
Try 1 watt first, if the station being called is within a few miles. If there is no answer,
switch to 3 watts and call again. You have the ability to go up to 6 watts of output power
to increase your calling distance. Remember, the lower wattage outputs will conserve your
battery and minimize interference to other users.
Calling Coast Stations
Call a coast station on its assigned channel. You may use Channel 16 when you
do not know the assigned channel.
Calling Other Vessels
Call other vessels on Channel 16 or on Channel 9. (Channel 9 is preferred for recreational
vessel use.) You may also call on ship-to-ship channels when you know that the vessel is
listening on a ship-to-ship channel.
Initial Calling on Channel 16 or 9
The use of Channel 16 is permitted for making initial contact (hailing) another vessel. The
limits on calling must be followed. Be reminded, Channel 16’s most important function is
for Emergency Messages. If for some reason, Channel 16 is congested, the use of Channel
9, especially in U.S. waters, may be used as the initial contact (hailing) channel for non-
emergency communication.
Limits on Calling
You must not call the same station for more than 30 seconds at a time.
If you do not get a reply, wait at least two (2) minutes before calling again.
After three (3) calling periods, wait at least 15 minutes before calling again.
Change Channels
After contacting another station on a calling channel, change immediately
to a channel which is available for the type of message you want to send.
Station Identication
Identify, in English, your station by your FCC call sign (if available), vessel name and the
state registration number, at both the beginning and at the end of the message.
Prohibited Communications
You MUST NOT transmit:
n False distress or emergency messages.
n Messages containing obscene, indecent or profane language.
n General calls, signals or messages (messages not addressed to a particular station) on
Channel 16, except in an emergency or if you are testing your radio.
n When you are on land.

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9
Nothing Comes Close to a Cobra®
Voice Calling
8English
Voice Calling
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Voice Calling •
You are required to listen to Channel 16 while standing by. Channel 16 is the distress and
safety channel used for establishing initial contact with another station and for emergency
communication. The Coast Guard also monitors Channel 16 for safety purposes for
everyone on the water.
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NOTE
Channel 9 may be used by recreational vessels for general-purpose calling.
This frequency should be used whenever possible to help relieve congestion
on Channel 16. The Coast Guard generally does not make urgent marine information
broadcasts or weather warnings on Channel 9. Boaters are still asked to “keep
watch” on Channel 16 whenever the radio is turned on and
not in use with another station.
To call another vessel or shore installation (e.g, lock or bridge tender):
nMake sure the radio is On.
nMake sure you are in standby listening mode on Channel 16. Make sure Channel 16
is not in use.
nWhen the channel is open (quiet), press the Talk button and call a vessel.
Hold the radio or microphone several inches from your face and speak
clearly and distinctly in a normal voice tone. Say “name or station being
called,” “THIS IS [your vessel name or call sign].”
nOnce contact is made, you must leave Channel 16 and go to another working
channel. See channel listing on page 60.
The vessel Corsair is calling the vessel Vagabond:
Corsair: “Vagabond, this is Corsair. Over.”
Vagabond: “Please switch and answer on Channel 68 (or any proper working
channel). Over.”
Corsair: “Switching to Channel 68. Over.”
For Example
n
If the other does not respond, wait two (2) minutes and repeat. You are permitted
to attempt contact three (3) times, two (2) minutes apart. If you still have not made
contact, wait 15 minutes before trying again.
nAfter communications are completed, each vessel must sign off with its call sign or
vessel name and the word “out” and return to Channel 16.
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NOTE
For best sound quality at the station you are calling, hold the microphone on
the front of the radio at least 2 in. (51 mm) from your mouth and slightly off to one (1)
side. Speak in a normal tone of voice.
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NOTE
“Over and Out”
The most commonly misused procedure words are “over and out” within the same
transmission. “Over” means you expect a reply. “Out” means you are finished and do
not expect a reply.

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11
Nothing Comes Close to a Cobra®
Emergency Messages and
Distress Procedure
10 English
Radiotelephone Calls
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Radiotelephone Calls •
Boaters may make and receive radiotelephone calls to and from any number on the telephone
network by using the services of public coast stations. Calls can be made — for a fee —
between your radio and telephones on land, sea and in the air. See the Appendix for the
public correspondence (marine operator) channels.
If you plan to use these services, consider registering with the operator of the
public coast station that you plan to work through. These services can provide
you with detailed information and procedures to follow.
NOTICE
You may disclose privileged information during a radiotelephone call.
Keep in mind that your transmission is NOT private, as it is on a regular
telephone. Both sides of the conversation are being broadcast and can be
heard by anyone who has a radio and tunes to the channel you are using.
Emergency Messages and Distress Procedure •
The ability to summon assistance in an emergency is the primary reason
to have a VHF marine radio. The marine environment can be unforgiving,
and what may initially be a minor problem can rapidly develop into a
situation beyond your control.
The Coast Guard monitors Channel 16, responds to all distress calls,
and coordinates all search and rescue efforts. Depending on the availability
of other capable vessels or commercial assistance operators in your vicinity,
Coast Guard or Coast Guard Auxiliary craft may be dispatched.
In any event, communicate with the Coast Guard as soon as you experience difficulties 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 and requiring immediate help. Use Channel 16 to communicate
your emergency message. Make sure you transmit
on high power. If you are merely out of gas, do not send an emergency message. Drop
your anchor and call a friend or marina to bring the fuel you need or to give
you a tow.

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13
Nothing Comes Close to a Cobra®
12 English
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Emergency Messages
and Distress Procedure
Emergency Messages and
Distress Procedure
Marine Emergency Signals
The three (3) spoken international emergency signals are:
The distress signal MAYDAY is used to indicate that a station is threatened by grave and
imminent danger and requests immediate assistance.
The urgency signal PAN is used when the safety of the vessel or person is in
jeopardy. (This signal is properly pronounced pahn.)
The safety signal SECURITE is used for messages about the safety of navigation or
important weather warnings. (This signal is properly pronounced see-cure-ee-tay.)
When using an international emergency signal, the appropriate signal is to be spoken three
(3) times prior to the message.
If You Hear a Distress Call
You must give any message beginning with one (1) of these signals priority over any
other messages. ALL stations MUST remain silent on Channel 16 for the duration of the
emergency unless the message relates directly to the emergency.
If you hear a distress message from a vessel, stand by your radio. If it is not answered, YOU
should answer. If the distressed vessel is not nearby, wait a short time for
others who
may be closer to acknowledge. Even if you cannot render direct assistance
, you may be in a
position to relay the message.
MAYDAY
PAN
SECURITE
Marine Distress Procedure
Speak slowly — clearly — calmly.
1. Make sure your radio is On.
2. Select Channel 16.
3. Press Talk button and say:
“MAYDAY — MAYDAY — MAYDAY.”
(Or “PAN — PAN — PAN,”
or “SECURITE — SECURITE — SECURITE.”)
4. Say:
“THIS IS [your vessel name or call sign],” repeated three (3) times.
5. Say:
“MAYDAY (or “PAN” or “SECURITE”)
[your vessel name or call sign].
6. Tell where you are:
(what navigational aids or landmarks are nearby).
7. State the nature of your distress.
8. State the kind of assistance needed.
9. Give number of persons aboard and conditions of any injured.
10. Estimate present seaworthiness of your vessel.
11. Briefly describe your vessel (length, type, color, hull).
12. Say:
“I WILL BE LISTENING ON CHANNEL 16.”
13. End message by saying:
“THIS IS [your vessel name or call sign]. OVER.”
14. Release Talk button and listen. Someone should answer.
If not, repeat the call, beginning at step 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 hone in on.

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Nothing Comes Close to a Cobra®
Specic Area Message
Encoding (SAME) Alerts
14 English
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Emergency Messages and
Distress Procedure
For Example
“Mayday — Mayday — Mayday”
“This is Corsair — Corsair — Corsair” [or “IL 1234 AB,” repeated three (3) times]
“Mayday Corsair (or IL 1234 AB)”
“Navy Pier bears 220 degrees magnetic — distance 5 miles”
“Struck submerged object and flooding — need pump and tow”
“Four (4) adults, three (3) children aboard — no one injured”
“Estimate we will remain afloat one-half hour”
“Corsair (or IL 1234 AB) is 26 ft sloop with blue hull and tan deck house”
“I will be listening on Channel 16”
“This is Corsair (or IL 1234 AB)”
“Over”
It is a good idea to write out a script of the message form and post it where you
and others on your vessel can see it when an emergency message needs to be sent.
Specific Area Message Encoding (SAME) Alerts •
The MR HH450 DUAL radio is capable of receiving Specific Area Message
Encoding (SAME) Alerts. During an NWR weather SAME alert, a code for your
specific location will alert you to deteriorating weather conditions in a
preprogrammed specific area or a specific event such as a Severe Thunderstorm
Watch or Tropical Storm Warning. There are over 900 National Weather Radio
(NWR) service stations using broadcast frequencies that transmit SAME alerts. You
must program your county, parish or independent city or marine area into the radio.
NOTE
DO NOT program your radio for a louder or clearer station not designated as
a SAME channel. You will not receive the local desired alerts.
The NWR service will then alert you only of weather and other emergencies for all
areas programmed on this radio.
• When an NWR office broadcasts a warning, watch or non-weather emergency, it
also broadcasts a digital SAME code that may be heard as a very brief static burst,
depending on the characteristics of the radio. This SAME code contains the type of
message; county(s) affected, and message expiration time.
• If programmed correctly, this radio will receive the weather channel so you can
listen to the NWR SAME message. You will hear the 1050 Hz warning alarm tone
as an attention signal, followed by the broadcast message.
• At the end of the broadcast message, you will hear a brief digital end-of message
static burst followed by a resumption of the NWR broadcast cycle.
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SAME coverage areas are defined within the “NWR Broadcast Service Area” and are
comprised of named counties, boroughs, metropolitan areas or portions thereof. NWR
“Broadcast Service Area” coverage by State can be found at http://www.nws.noaa.gov/nwr or
by telephone at 1-888-NWRSAME (1-888-697-7263).
The information at the following website, http://www.nws.noaa.gov/nwr/indexnw.
htm#sametable, will help to program the SAME alert county codes and respective frequencies
into this radio. This site also lists SAME code Marine zones for bounded and named water
areas.

17
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Introduction
Nothing Comes Close to a Cobra®
16 English
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Introduction
Included in this Package
Included in this Package •
You should nd all of the following items in the package with
your Cobra VHF/GMRS radio:
MEMSAMEVOX HI
ROG
VHF
GMRS
T
RX
U
Radio Drop-In Battery Charger
DC Charger
For connection to 12-volt power
sources.
LiON Battery Pack
Operating Instruction Manual Spring-Loaded Belt Clip
Antenna
AC Charger
For connection to 120-volt power
source.
Wrist Strap
Alkaline Battery Tray
Install/Remove Antenna
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Install/Remove Antenna •
1. To install the antenna turn the antenna into the radio
clockwise to tighten. Do not overtighten.
2. To remove the antenna turn the antenna counterclockwise.
This radio transmitter IC: 906A-MRHH450 has been approved
by Industry Canada to operate with the supplied antenna. Other
antennas are strictly prohibited for use with this device.
Cet émetteur radio IC: 906A-MRHH450 a été approuvé par
Industrie Canada pour fonctionner avec l’antenne fournie.
D’autres antennes sont strictement interdits pour une utilisation
avec cet appareil.
Batteries and Charger •
The radio is shipped with a sealed lithium-ion (LiON) battery pack
(P/N CM 110-026) that is rechargeable.
WARNING
The charger provided for this radio is only to be used
to charge the battery pack provided. Do not charge any
other type of batteries in the charger as fire, explosion
or battery damage will occur. Avoiding extreme
temperatures will also help prolong the life of the battery
pack for the radio.
When your rechargeable batteries begin to discharge too quickly,
it is time to install a new battery pack. Your radio
will also operate with five (5) high-quality AA alkaline batteries,
using the included alkaline battery tray.
Installing the Battery Pack
1. Position the battery pack over the back of the radio.
2. Engage the battery pack into the radio by sliding to the top
until battery pack is fully seated against radio housing.
3. Tighten the screw using the end of the belt clip to secure the
battery pack to the radio. Do not overtighten. Only use the end
of the belt clip to tighten the screw.
Antenna
Install Battery Pack
LiON Battery Pack
Tighten Screw

19
Nothing Comes Close to a Cobra®
Belt Clip
Insert Belt Clip onto Radio
SCAN
H
MEMSAMEVOXHI
ROG
VHF
GMRS
T
RX
U
Secure Radio
VHF Marine Radio Protocols
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Installation
18 English
VHF Marine Radio Protocols
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Installation
Wrist Strap and Belt Clip •
Belt Clip
Use the spring-loaded belt clip to carry the radio on your person.
1. Slide the belt clip into the guide channel on the back of the
radio until it is locked in place.
2. To attach the wrist strap, insert it through the hole at the top
of the belt clip, feed it through the looped end and pull tight to
secure to the belt clip.
3. Press open the belt clip, slide it over the belt and release the
clip.
4. To remove the belt clip from the radio press the tab on the belt
clip, which unlocks the clip, and slide it out.
Wrist Strap Attachment
Wrist Strap and Belt Clip
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Batteries and Charger
Initial Charge
The Cobra-provided LiON battery pack may be charged at home,
in a car or in a boat using the appropriate 12V or 120V power
cord with the charger.
1. Insert one (1) of the power cords into the back of the drop-in
charger.
2. Insert the other end of the power cord into the appropriate 12V
or 120V power source.
3. Remove battery pack spacer from the charger and insert
the entire radio/battery into the charger. The metal charge
contacts on the battery will contact the mating prongs in the
charger to transfer the charging current.
4. Observe that the red light on the front of the charger glows
to indicate that the battery pack is properly seated and the
charger is operating.
5. Allow the batteries to charge for five (5) to six (6) hours before
use. The light will change back to green when the battery is
fully charged.
WARNING
Only the rechargeable LiON battery pack can be
recharged. You MUST use one of the charging devices
provided with this radio. Do not substitute any other type
of charging adapter or charger base for this radio. Battery
damage, fire or explosion may result.
It is equally important to prevent the lithium-ion (LiON)
battery pack from freezing to obtain best performance
from the battery pack.
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NOTE
If the drop-in charger is used on a boat, Cobra
recommends you attach it to a horizontal shelf or vertical
bulkhead (using the screw holes provided) to prevent
possible damage due to the boat rolling or pitching. The
charging base has been designed to hold the battery pack
in place during rough sea conditions.
Power Sources
Initial Battery Charge

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VHF Marine Radio Protocols
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Installation
21
Nothing Comes Close to a Cobra®
To Remove Battery Pack from Radio
1. Loosen the screw on the back of the battery pack.
2. Lift the bottom of the battery pack slightly to remove
it from the radio housing.
3. Pull battery pack out of the radio housing.
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NOTE
The LiON battery pack can also be charged in the
battery charger without being installed in the radio.
Insert the spacer into the battery charger to support
the battery pack during this charging process. Follow
the same procedures in “Initial Charge” to charge the
battery pack.
NOTICE
Lithium-ion (LiON) batteries are toxic. Please dispose of
properly. Some marine suppliers and electronics retailers
accept old battery
packs for recycling and some municipal
waste disposal
agencies have special provisions for
battery disposal.
Alkaline Batteries
The alkaline battery tray acts as a backup or “Emergency” power
source should the battery pack run low on power and need to be
recharged. The radio will transmit at full power when using five
(5) new AA alkaline batteries.
WARNING
Never attempt to recharge alkaline batteries. They are not
made to be recharged, and should be disposed of in
a proper manner.
Batteries and Charger
VHF Marine Radio Protocols
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Installation
20 English
Batteries and Charger
Remove Battery
Alkaline Battery Tray
Battery Pack Charging Only
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Maintaining the Battery Charge
As you use your radio, the battery power icon will show the
battery power remaining. When the icon begins to flash, it is time
to recharge or change the batteries.
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NOTE
Radio will continue to receive signals when blinking
but cannot transmit.
NOTICE
Use only the drop-in charger provided by Cobra. Do
not use the charger with alkaline batteries; only the
LiON battery pack is rechargeable. Spent alkaline
batteries must be discarded and replaced.
It is a good idea to keep a set of fresh, high-quality AA alkaline
batteries with your radio. Should the rechargeable battery pack
become discharged and no electrical power source is available,
you can insert the included alkaline battery tray with fresh
alkaline batteries and continue to use your radio.
Fully Charged
Partially Charged
Fully Discharged

VHF Marine Radio Protocols
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Operating Your Radio
23
Nothing Comes Close to a Cobra®
22 English
VHF Marine Radio Protocols
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Installation
Getting Started
Getting Started
Refer to the foldout at the front of this manual to identify the
various controls and indicators on your radio. Throughout this
manual you will be instructed to “Press” or to “Press and
Hold” various buttons (except “Push to Talk”) on the radio.
“Press” means a momentary press of approximately one (1)
second. “Press and Hold” means to hold the button down for
approximately two (2) seconds.
Whenever you press any button except the Talk button on your
radio, a brief tone (beep) (if key tones are selected On) will
sound to confirm the button press. With all button presses, the
appropriate icon will appear on the LCD and the backlight will
turn On. The backlight will stay On for 10 seconds after the
button is released.
At times, you will hear two (2) other sounds. Two (2) beeps will
sound to confirm your setting changes and three (3) beeps will
sound to notify you of an error.
On/Off/Volume Control
(Counterclockwise)
On/Off/Volume Control
(Clockwise)
MEMSAMEVOX HI
ROG
VHF
GMRS
T
RX
U
HH450 Radio
Common Radio Functions
The following procedures define common operating functions of the radio when in
Marine Standby, GMRS Standby, or Weather (WX) Standby modes.
Power/Volume Control
Power On/Off Control
The On/Off/Volume control is located at the upper right
side of the radio. Turning the On/Off/Volume control past
the detent position will turn the radio On or Off.
Volume Control
Volume is controlled by turning the On/Off/Volume control.
nTo increase the volume, turn the On/Off/Volume control
clockwise.
nTo decrease the volume, turn the On/Off/Volume
control counterclockwise.
Band Control
The Band button allows you to select between the Marine
(VHF), GMRS and weather bands. Press and release
the band button to quickly toggle between the three radio
bands.
Getting Started
MEMSAMEVOX HI
ROG
VHF
GMRS
T
RX
U
Band Button

VHF Marine Radio Protocols
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25
Nothing Comes Close to a Cobra®
Getting Started
Channel Up/Down Buttons
Your radio will Receive (Rx) and Transmit (Tx) VHF/GMRS signals on
the channel indicated on the LCD display. You can change the channel
at any time using the Channel Up/Down buttons.
To Change Channels:
Press the Channel Up/Down button.
If you are on Channel 88, pressing the Channel Up button will
advance to Channel 01. If you are on Channel 01, pressing
the Channel Down button will advance to Channel 88. (GMRS
highest channel is 22, then will advance to channel 1. Weather
highest channel is 10, then advances to channel 1).
You can press and hold the Channel Up/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.
SCAN Button
Press and release the SCAN button to enter all scanning modes
- Marine, GMRS and memory. See the Advanced Operation
section has more details on using the Scan modes. The SCAN
icon will display on the LCD display. Scanning begins at lower
channels, and scans to higher channels. Press the Channel Up/
Down button to change the scan direction.
MEMSAMEVOX HI
ROG
VHF
GMRS
T
RX
U
SCAN Button
MEMSAMEVOX HI
ROG
VHF
GMRS
T
RX
U
Channel Up/Down Buttons
MEMSAMEATISVOX LOMEDHI
ROG
VHF
A
B
GMRS
T
RX
CIU
MR HH350/450/500
LCD DISPLAY UPDATE
REV. 7.19.17
Currently On Channel 88
VHF Marine Radio Protocols
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24 English
Getting Started
Radio Speaker and Microphone
The internal Radio Speaker and Microphone are located on the
bottom front face of the radio below the lower control buttons.
An optional Speaker/Microphone port is located at the top
of the radio between the antenna and the Power/Volume
control. Unthread the Speaker/Microphone port cover to access and
install an optional Cobra speaker or microphone into this port.
Talk Button
Press and hold the Talk button to transmit messages. Release
the Talk button to stop transmitting.
Backlight/Key Lock Button
To Display the Backlight Momentarily:
Press the Backlight/Key Lock button. The backlight will
remain On for 10 seconds. If the backlight is already On,
another press of the Backlight/Key Lock button
will turn it Off.
Key Lock
To prevent accidental changes to your settings, you can
lock all of the following buttons:
nChannel Up Button
nChannel Down Button
nBand Button
nREWIND Button
nSCAN Button
nMEM/ESC Button
nWX/H-M-L Button
n16/9 Button
nTRI-WATCH Button
nCall/Enter/Setup Button
To Lock or Unlock the Buttons:
Press and hold the Backlight/Key Lock button for two
(2)
seconds. The Key Lock icon will appear or disappear
in the LCD. When Key Lock is On, pressing any of the
listed buttons on the front of the radio will result in a three
(3) beep error message.
Both the Backlight/Key Lock button and the Talk button
are active — you can Receive (Rx) or Transmit (Tx)
a message with Key Lock On, but you cannot change the
channel.
Backlight/Key Lock Button
MEMSAMEVOX HI
ROG
VHF
GMRS
T
RX
U
Key Locked Buttons
MEMSAMEVOX HI
ROG
VHF
GMRS
T
RX
U
Key Lock Icon
Speaker/Mic Port
Talk Button

VHF Marine Radio Protocols
27
Nothing Comes Close to a Cobra®
VHF Mode Programming
Setup Mode Programming •
The following series of procedures is designed to allow you
to set the programmable features of your radio. Correctly
following these steps results in a minimal amount of radio setup
programming time.
During setup programming, the matrix display will show text
describing the programming action you are now performing.
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NOTE
When in any of the Setup modes (Marine (VHF), GMRS or
Weather), if you stop programming for longer than
15 seconds, your entry will be saved and the radio will go
back to Standby mode. While in the Setup mode,
you will not receive any signal reception except when setting
squelch.
Programming these features will allow you to customize certain
features of this radio to enhance your “On-Water” radio use.
Start from Marine Standby mode to begin Marine (VHF) Setup
programming. Press and hold the Call/Enter/Setup button for
two (2) seconds to enter the programming mode.
The mode programming follows this sequence:
n Squelch Level Set
n UIC Channel Map
n VOX On/Off
n Vox Sensitivity Level Set (this menu setting will be
present when VOX is set to ON)
n Call Alert Tone/Vibrate Set
n Call Alert Tone Set
n Roger Beep On/Off
n Key Tone On/Off
n Rewind On/Off
n Priority 16 On/Off
Marine (VHF) Mode Programming
VHF Marine Radio Protocols
26 English
Getting Started
High/Medium/Low (H-M-L) Power Button
Your radio can transmit selectively at 1, 3 or 6 (or highest allowed
ERP setting in GMRS mode) watts of power. Cobra suggests you
maintain the low power setting for short-range communications.
You will conserve battery life and avoid overpowering nearby
stations with a low power setting signal. Use the high power
setting for long-range communications or when you do not
receive a response to a signal sent at 1 watt.
To Toggle Between H-M-L Power Modes:
Press and release the H-M-L Power button. The LCD
will show which mode is in effect. Some channels are
restricted for a maximum use of 1 watt. Your radio will
automatically set the power to Low Power mode
when you select those channels.
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NOTE
Some channels, frequency bands and countries of use
might not be able to operate in High Power mode and
some channels are receive only.
Call/Enter/Setup Button
The Call/Enter/Setup button has multiple functions. It is
generally used in the following ways:
nPress and release to transmit your unique Call Tone signal to
another radio.
nPress and hold to enter any Setup menu.
nFunctions as an Enter button when making a selection
in any Setup menu.
MEMSAMEVOX HI
ROG
VHF
GMRS
T
RX
U
H-M-L Power Button
MEMSAMEVOX HI
ROG
VHF
GMRS
T
RX
U
Call/Enter/Setup Button
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Operating Your Radio
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U
Marine Standby Mode
Channel 16/9 Button •
Channel 16/9 mode gives you quick access to calling Channel
16 and Channel 9 from any operational mode.
To Switch to Channel 16 or Channel 9:
1. Press the Channel 16/9 button to change to
Channel 16.
2. Press the Channel 16/9 button again to change to
Channel 9.
3. Press the Channel 16/9 button a third time and return to
the last used channel.
LO
RX
U
LO
RX
U
Channel 16 or Channel 9

VHF Marine Radio Protocols
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29
Nothing Comes Close to a Cobra®
VHF Mode Programming
USA/International/Canada Channel Maps
Three (3) sets of VHF Channel Maps have been established
for marine use in the USA, Canada, and the rest of the world
(International). Most of the channels are the same for all three
(3) maps, but there are definite differences (see table in the
Appendix on page 62). Your radio has all three (3) maps built into
it and will operate correctly in whichever area
you choose.
To Set Channel Map Operating Area:
1. The Channel Map mode is the second mode on
the Marine (VHF) Setup programming.
2. U, I and C will display, with the current setting
(the Uicon is the default) flashing.
3. Press Channel Up/Down button to select the
U, I or Cicon.
4. Press Call/Enter/Setup button to save this entry
and move to the next Setup mode programming.
VHF Marine Radio Protocols
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Operating Your Radio
28 English
VHF Mode Programming
SAMEDHI
A
B
CIU
Active Channel Map Icon
MEMSAMEVOX HI
ROG
VHF
GMRS
T
RX
U
Channel Up/Down Buttons
Squelch Control
Squelch Control filters weak signals and radio frequency (RF)
noise
so that you will clearly hear the signals you want.
The Squelch Control on this radio is set through the following
keypad operation.
To Set Squelch Control:
1. With the power On, push and hold Call/Enter/Setup
button to access the Setup menu.
2. Squelch control will be the first menu item to appear.
Press the Channel Up and Channel Down buttons to set
level. The signal level bar graph shows squelch
level while you are in Setup mode on the squelch
adjust function.
3. To adjust your squelch, press the Channel Down button
until you hear a hissing sound, then press
and release the Channel Up button until the hissing
stops. This will establish a “Baseline” squelch.
4. By pressing the Channel Up button further, you will filter
weak and medium strength signals. By pressing Channel
Down button, you will receive weaker signals.
5. Press the Call/Enter/Setup button to save this entry
and move to the next Setup mode programming.
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NOTE
If the Squelch is set so that you can hear a continuous hissing
sound, the Memory Scan and Tri-Watch functions will be
blocked.
VHF
Squelch Control
MEMSAMEVOX HI
ROG
VHF
GMRS
T
RX
U
Channel Up/Down Buttons

30
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31
Nothing Comes Close to a Cobra®
VHF Mode Programming
English
VHF Mode Programming
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Operating Your Radio
Voice Activated Transmit (VOX) Mode
In VOX mode, your radio can be used “hands-free,”
automatically transmitting when you speak. You can also set the
VOX sensitivity level to fit the volume of your voice and avoid
transmissions triggered by background noise.
To turn VOX Mode On or Off:
1. Display will show VOX icon and ON or OFF flashing.
2. Press Channel Up/Down button to select ON or OFF.
3. Press Call/Enter/Setup button to save this entry and
move to the next setup programming mode.
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NOTE
Once set, this is a global setting when in all radio modes.
To set VOX Sensitivity Level:
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NOTE
VOX sensitivity level is only visible when VOX is On.
1. The display will show VOX LEVEL and the current level
will be flashing.
2. Press Channel Up/Down button to change the Vox level
of your choice. Remember, this selection is your voice
sensitivity level during hands-free operation.
05 - indicates a Low (quiet) voice setting.
03 - indicates a Medium voice setting.
01 - indicates a High (loud) voice setting.
3. Press Call/Enter/Setup button to save this entry and
move to the next setup programming mode.
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NOTE
VOX will be turned Off automatically when the radio is
turned Off. This will avoid accidental transmissions.
Call Alert
If Call Alert is set to On, the radio will alert you to a call from a compatible
Cobra radio with a Call Alert.
Select the type of radio alert:
1. The display will show CALL ALERT and will be flashing OFF,
TONE, VIBRATE, or VIB+TONE.
2. If TONE, VIBRATE, or VIB+TONE option is shown on the
display then the appropriate BELL, VIBRATE, shake bars or
combination VibrAlert icon will be displayed.
3. Press Channel Up/Down button to select the alert mode of
your choice.
4. Press Call/Enter/Setup button to save this entry and move
to the next setup programming mode.
VOX
VHF
VOX Mode
VHF
VOX Level
MEMSAMEVOX HI
ROG
VHF
GMRS
T
RX
U
Channel Up/Down Buttons
MEMSAMEVOX HI
ROG
VHF
GMRS
T
RX
U
Channel Up/Down Buttons
Call Tone Alert

33
Nothing Comes Close to a Cobra®
VHF Mode Programming
ROG
VHF
Roger Beep Mode
VHF
Call Tone Select
VHF Marine Radio Protocols
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32 English
VHF Mode Programming
Call Tone Select
This setting will allow you to transmit a unique
Call Tone alert to identify your radio when you transmit
messages. You can select from one of 10 different
Call Tone signals.
To Set Call Tone:
1. From the previous press of the Call/Enter/Setup button,
the matrix will display CALL TONE SELECT and the
display will flash the current Call Tone number (01
through 10).
2. Press the Channel Up/Down button to select a different
Call Tone. An example of each call tone will sound for
1.5 seconds.
3. Press Call/Enter/Setup button to save this entry and
move to the next Setup mode programming.
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NOTE
Call Tones are not usually used for Marine VHF
communications. We allow you to turn it On for your
unique communication needs. It is only compatible with
other Cobra VHF radios.
Roger Beep Mode
In Roger Beep mode, your listener will hear an audible tone
when you release the Talk button. This alerts your listener that
you are finished talking and it is OK for them to speak.
To Set Roger Beep On or Off:
1. Display will show ROG icon flashing and the matrix will
display ROGER BEEP ON or OFF.
2. Press Channel Up/Down button to select ON or OFF.
ROG will be displayed when On.
3. Press Call/Enter/Setup button to save this entry and
move to the next Setup mode programming.
Key Tone Mode
In Key Tone mode, an audible tone will sound each time a button
is pressed or you change a setting.
To Set Key Tone On or Off:
1. Display will show Key Tone icon flashing and matrix will
display KEY TONE ON or OFF.
2. Press Channel Up/Down button to select ON or OFF.
3. Press Call/Enter/Setup button to save entry.
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NOTE
Once set, this is a global setting when in all
radio modes.
VHF
Key Tone Mode
Rewind On/Off
If Rewind is enabled, the last 20 seconds of incoming audio
is recorded and you can play back missed VHF calls by
pressing the Rewind button.
1. Display will show the Rewind icon and the matrix will
display REWIND ON or OFF.
2. Press Channel Up/Down button to select ON
or OFF.
3. Press Call/Ent/Setup button to save entry.
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NOTE
Once set, this is a global setting when in all
radio modes.
Channel 16 Priority Mode
If Priority 16 is turned on, during channel scan the radio
will frequently check the Channel 16 Safety and Distress
channel for calls.
To Set Priority 16 On or Off:
1. The display matrix will show PRIORITY 16 ON
or OFF.
2. Press the UP or DOWN button to select On or Off.
3. Press Call/Ent/Setup button to save entry.
MEMSAMEVOX HI
ROG
VHF
GMRS
T
RX
U
Channel Up/Down Button
VHF
Rewind Enable
VHF Marine Radio Protocols
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VHF
Channel 16 Priority

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Operating Your Radio
35
Nothing Comes Close to a Cobra®
34 English
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Operating Your Radio
Programming these features will allow your radio to listen to
all NOAA Hazard Alert radio channels. In this process, you
will be programming the channel settings for the “Specific
Area Message Encoding (SAME)” and “Emergency Alert
Messages” sent by NOAA. See channels and frequencies
listed on page 31.
Start from Weather Standby mode to begin
Weather Alert Setup programming. Momentarily Press the Call/
Enter/Setup button to enter the programming mode.
Weather (WX) Mode Programming
RX
Weather Alert Standby
Alert Functions
SAME is an advanced weather alert feature. Leave this set to
OFF if you are not sure about your understanding of its operation.
The weather mode can be set to respond to NOAA alerts in three ways:
• OFF - radio alerts are disabled.
• WX - radio will sound a max volume tone alert for 8 seconds when
NOAA sends a 1050 Hz warning alert tone.
• SAME -radio will display the NOAA SAME alert message.
1. Select Alert and either OFF, WX or SAME will flash in the display.
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NOTE
If WX Alert is turned on, the radio will receive NOAA
voice alerts from a wide geographic area around you.
NOTE
If SAME Alert is turned on, the radio will receive detailed
NOAA alerts from a geographic area immediately around you.
2. Press Channel Up/Down button to select OFF, WX or SAME.
3. Press the Call/Enter/Setup button to save entry and move to the
next programming mode.
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Proceed to SAME programming section if SAME has
been selected.
To Set WX Auto Search (SCAN) On or Off:
1. Display will show WX Alert icon and SCAN, ON or OFF is flashing.
2. Press Channel Up/Down button to select SCAN, ON or OFF.
3. Press the Call/Enter/Setup button to save entry.
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NOTE
When WX Auto Search (SCAN) is set to On, weather
channel scanning will start automatically and scan all
available weather channels. When the user-selected
weather channel falls below the preset squelch level,
the weather channel will change to a new weather
channel under the following conditions:
n WX Alert is engaged.
n WX received signal level falls below a preset
squelch on the user-selected weather channel and
– radio is in WX Standby OR
– radio is in VHF or GMRS Standby and
there is no channel activity.
Select Weather Alert
Squelch Control
Squelch Control filters weak signals and radio frequency (RF)
noise
so that you will clearly hear the signals you want.
The Squelch Control on this radio is set through the following
keypad operation.
To Set Squelch Control:
1. With the power On, momentarily press the Call/Enter/
Setup button to enter the Setup mode programming.
2. Squelch control will be the first menu item to appear.
Press the Channel Up and Channel Down buttons to set
level. The signal level bar graph shows squelch
level while you are in Setup mode on the squelch
adjust function.
3. To adjust your squelch, press the Channel Down button
until you hear a hissing sound, then press
and release the Channel Up button until the hissing
stops.
4. Press the Call/Enter/Setup button to save this entry
and move to the next Setup mode programming.
VHF
Squelch Control
MEMSAMEVOX HI
ROG
VHF
GMRS
T
RX
U
Channel Up/Down Buttons
Weather Mode ProgrammingWeather Mode Programming
WX Auto Search (SCAN)
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