Cobra HH450 DUAL All Terrain Marine Radio Owner’s Manual

MR HH450 DUAL
Nothing Comes Close to a Cobra®

Our Thanks to You and Customer Assistance

Our Thanks to You
Thank you for purchasing a Cobra VHF/GMRS Dual Band radio.
Properly used, this Cobra® product will give you many years of reliable service.
HowYour Cobra VHF/GMRS Radio Works
This dual band radio is a battery-powered portable transceiver for use afloat or on land. In Marine VHF mode it gives you two-way vessel-to-vessel and vessel-to-shore station communications, primarily for safety and secondarily for  navigation and operational purposes.
In GMRS mode it allows you to reach other GMRS capable radios for short- distance two-way land mobile communication. This mode is normally 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.

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.
Automated Help Desk English only.
24 hours a day, 7 days a week 773-889-3087 (phone).
Customer Assistance Operators English and Spanish.
8:00 a.m. to 5:30 p.m. Central Time Mon. through Fri. (except holidays) 773-889-3087 (phone).
Questions English and Spanish.
Faxes can be received at 773-622-2269 (fax).
Technical Assistance English only.
www.cobra.com (on-line: Frequently Asked Questions).
English and Spanish. productinfo@cobra.com (e-mail).
For Assistance Outside the U.S.A.

Radio Controls and Indicators

Backlit LCD Screen and Product Features

Product Features

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.

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-toshore 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.

Important Safety Information

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:

• FCC OET Bulletin 65 Edition 97-01 Supplement C, Evaluating Compliance with FCC Guidelines for Human Exposure to Radio Frequency Electromagnetic Fields.
• 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.
• American National Standards Institute (C95.3-1992), IEEE Recommended Practice for the Measurement of Potentially Hazardous Electromagnetic Fields — RF and Microwave.
• Industry Canada RSS-102-Radio Frequency (RF) Exposure Compliance of Radiocommunication Apparatus (All Frequency bands).

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.
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.

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.

• Use only the Cobra charger to recharge lithium-ion (LiON) batteries in the radio.
• Do not short circuit the battery pack.
• When 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.
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.

Radio Check Procedure

Sea Tow Automated Radio Check (ARC) System
Please try the Sea Tow Automated Radio Check service. Areas where the safety check service is available include the East Coast, Gulf of Mexico, and Southern California, as well as in select inland regions. The first and only boating safety  program of its kind, the Sea Tow Automated Radio Check service is fully automated and allows 24 hour a day automatic responses to radio check calls.
Conducting a radio check through the Sea Tow Automated Radio Check service couldn’t be simpler. All boaters need to do is tune their VHF radios to Channel 24, 25, 26, 27 or 28, depending on the region, key the mic, and ask for a radio  check. The Automated Radio Check system responds to each radio check with an automated reply, and also replays to the boater’s original radio transmission, allowing him or her to assess the strength of the signal and confirm the VHF  radio is in good working order.
To find the Sea Tow Automated Radio Check service channel in an area, owners should visit http://www.seatow.com/arc. The web page links to an instructional video demonstrating how to use the service step by step.

VHF Marine Radio Procedures

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 Identification
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:

• False distress or emergency messages.
• Messages containing obscene, indecent or profane language.
• 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.
• When you are on land.

Voice Calling

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.

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):

• Make sure the radio is On.

• Make sure you are in standby listening mode on Channel 16. Make sure Channel 16 is not in use.

• When 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].”

• Once 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.”

• 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.
• After communications are completed, each vessel must sign off with its call sign or vessel name and the word “out” and return to Channel 16.

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.
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.

Radiotelephone Calls

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.

Marine Emergency Signals
The three (3) spoken international emergency signals are:
MAYDAY
The distress signal MAYDAY is used to indicate that a station is threatened by grave and imminent danger and requests immediate assistance.
PAN
The urgency signal PAN is used when the safety of the vessel or person is in jeopardy. (This signal is properly pronounced pahn.)
SECURITE
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.

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.

Included in this Package

Included in this Package
You should find all of the following items in the package with your Cobra VHF/GMRS radio:

Install/Remove Antenna

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.

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 room 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.

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.

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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.
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.

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.
   

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.

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.

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.

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.

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.

• To increase the volume, turn the On/Off/Volume control clockwise.
• To 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.

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:

• Channel Up Button
• Channel Down Button
• Band Button
• REWIND Button
• SCAN Button
• MEM/ESC Button
• WX/H-M-L Button
• 16/9 Button
• TRI-WATCH Button
• Call/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.

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.

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.
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:

• Press and release to transmit your unique Call Tone signal to another radio.
• Press and hold to enter any Setup menu.
• Functions as an Enter button when making a selection in any Setup menu.

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.

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.
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.

Marine (VHF) Mode Programming
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:

• Squelch Level Set
• UIC Channel Map
• VOX On/Off
• Vox Sensitivity Level Set (this menu setting will be present when VOX is set to ON)
• Call Alert Tone/Vibrate Set
• Call Alert Tone Set
• Roger Beep On/Off
• Key Tone On/Off
• Rewind On/Off
• Priority 16 On/Off

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.
   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.

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:![Cobra HH450 DUAL All Terrain Marine Radio

• Active Channel Map Icon](https://manuals.plus/wp-content/uploads/2023/10 /Cobra-HH450-DUAL-All-Terrain-Marine-Radio-Active-Channel-Map-Icon.png)

  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 U icon is the default) flashing.
  3. Press Channel Up/Down button to select the U, I or C icon.
  4. Press Call/Enter/Setup button to save this entry and move to the next Setup mode programming.

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.
   NOTE
   Once set, this is a global setting when in all radio modes.

To set VOX Sensitivity Level:
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.

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.

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.

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.

NOTE
Once set, this is a global setting when in all radio modes.

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.

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.

Weather Mode Programming

Weather (WX) Mode Programming
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 button to enter the programming mode.

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.

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.
  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.
  NOTE
  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.
   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:
   ■ WX Alert is engaged.
   ■ 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.

To Set SAME FIPS Code Programming:

1. From Weather Standby Mode, press CALL/ENT/SETUP key until the display matrix shows SELECT ALERT: and WX, SAME, or OFF will be flashing.

2. Press Channel Up/Down buttons to select SAME.
   The first memory location “A” will be displayed. Up to 10 FIPS codes can be entered A – J.

3. Press and release the CALL/ENT/SETUP button and the first FIPS memory A will be displayed. Use the Channel Up/Down buttons to select the FIPS memory location A-J.

4. Press the Call/Enter/Setup button to enter geographic weather locations as identified by FIPS (Federal Information Processing System) area in the United States.
   NOTE
   FIPS codes identify geographic areas in the United States as shown on the Internet website: http://www.nws.noaa.gov/nwr/indexnw.htm.

5. The display will show “ ——,” or last entered FIPS code. One (1) digit in display will be flashing.

6. Press Channel Up/Down button to select first digit.

7. Press and release Call/Enter/Setup button to advance to next digit code. Press and release MEM/ESC button to back up. Repeating, press and release of the MEM/ESC button, will back up to the top level.

8. Continue steps 5 to 7 until all six (6) digits are entered.

9. Press the Call/Enter/Setup button to save the entered digits.
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10. Use the Channel Up/Down buttons to select:
    • OFF – entered FIPS code is not active or,
    • ON – entered FIPS code is active.

11. Press the Call/Enter/Setup button to save the memory.

12. Repeat steps 3 through 10 to enter up to 10 FIPS codes in memory.

13. When all of the codes are entered, use the Channel Up/Down buttons to move to memory K.

14. Press the Call/Enter/Setup button and select:
    • ON – all entered FIPS codes are set active,
    • OFF – all entered FIPS codes are set inactive, or
    • OK – all entered FIPS codes are correctly entered, some On and some Off.

15. At least one FIPS code must be entered and made active (ON) or the SAME mode is disabled. The radio will warn you if no FIPS codes are on.

16. Press the Call/Enter/Setup button to exit back to weather standy.
    

GMRS Mode Programming

GMRS Mode Programming
The GMRS (General Mobile Radio Service) feature is a landmobile service available for short-distance, two-way communications in the USA. You must have a valid FCC license to communicate on these channels (see page 28).
Start from GMRS Standby mode to begin GMRS Setup programming. Press and hold the Call/Enter/Setup button for two (2) seconds to enter the programming mode.

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.
   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.

CTCSS and DCS Coding Mode
Continuous Tone Controlled Squelch System (CTCSS) and Digital Coded Squelch (DCS) coding are used in two-way radio systems. These are sub-audible frequencies or digital tones that are sent continuously with speech to engage other  radios with this feature. This feature is generally used between talk groups on shared channels. Radios with the same subcode set will hear your transmission. Radios with both DCS and CTCSS set to Off or 00 will be able to hear your transmissions.

To Set CTCSS Code Entry:

1. Display will show CTCSS icon and OFF icon flashing.
   NOTE
   If CTCSS was previously set to a Code number, display will show the current GMRS channel and flash the CTCSS icon and Code number.

2. Codes begin at 00 (OFF) and go to 38, followed by 00, and return back to 01 again. The last used GMRS channel will be shown in the large digit display.
   NOTE
   If CTCSS is On, then DCS will be Off. If DCS is On, then CTCSS will be Off. The radio does this automatically.

3. Press Channel Up/Down button to change code number, or press and hold Channel Up/Down button to rapid advance (scroll).

4. Press Call/Enter/Setup button to save entry and move to the next setup programming mode.

To Set DCS Code Entry:

1. Display will show DCS icon and OFF icon flashing.
   NOTE
   If DCS was previously set to a Code number, display will show the current GMRS channel and flash the DCS icon and Code number.

2. Codes begin at 01 and go to 38, followed by OFF, and return back to 01 again. The last used GMRS channel will be shown in the large digit display.
   NOTE
   If CTCSS is On, then DCS will be Off. If DCS is On, then CTCSS will be Off. The radio does this automatically.

3. Press Channel Up/Down button to change code number, or press and hold Channel Up/Down button to rapid advance (scroll).

4. Press Call/Enter/Setup button to save entry and move to the next setup programming mode.

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.

NOTE
Once set, this is a global setting when in all radio modes.
To set VOX Sensitivity Level:
NOTE
VOX sensitivity level is only visible when VOX is On.

1. The display will show VOX LEVEL and 01 will be flashing.

2. Press Channel Up/Down button to change volume 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.
   NOTE
   VOX will be turned Off automatically when the radio is turned Off. This will avoid accidental transmissions.

VibrAlert Select
This setting will allow you to select whether your radio activates the VibrAlert shake in addition to the incoming call tone when receiving a call. Once the radio shakes, it will delay 20 seconds before shaking again to eliminate excessive  VibrAlerts on a busy GMRS channel.
To Set VibrAlert:

1. From the previous press of the Call/Enter/Setup button, the matrix will display VIBRALERT OFF.
2. Press the Channel Up/Down button to select VIBRALERT ON. The VibrAlert icon will be activated on the display.
3. Press Call/Enter/Setup button to save this entry and move to the next Setup mode programming.

Call Tone Select
In Call Tone mode, you can select the tone the radio will use when transmitting a Call.

1. The display will show Call Tone Select and the current tone number will be flashing.
2. Press Channel Up/Down to select the tone you want to use.
3. Press Call/Enter/Setup button to save this entry and move to the next Setup mode programming.

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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 and 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.
   NOTE
   Once set, this is a global setting when in all radio modes.

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 and Off:

1. Display will show Key Tone icon flashing and the 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 this entry.
   NOTE
   Once set, this is a global setting when in all radio modes.

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.
   NOTE
   Once set, this is a global setting when in all radio modes.

Use the Cobra exclusive Rewind-Say-Again® feature to replay or record the last 20 seconds of an incoming audio transmission.
Example 1:
When engine noise, music or conversation creates too much noise to hear an inbound message clearly, press the REW button to hear the message a second time.
Example 2:
When listening to an urgent distress message of an excited caller with confusing background noise, press the REW button to hear the message a second time and get life saving information. Use this feature to record call details including position coordinates, call signs, registration numbers and store details that will help authorities locate the distressed vessel.
NOTE
Hold the Rewind button to lock the recording memory (the Rewind icon flashing) and save the currently recorded transmission.

Advanced Operation

Using Rewind-Say-Again® to Record VOICE Audio Transmission:
NOTE
If the record memory is locked (rewind icon flashing), press and hold the REW button to unlock.

1. Press and hold SCAN button for two (2) seconds to enter Record mode. The matrix will display MIC RECORDER.

2. Press and hold PTT button to begin recording from radio microphone. The transmitter will turn off.
   The matrix will display MIC RECORDER ON and the seconds remaining will be shown in the lower right corner. If PTT button is released, recording stops. While recording, a 20-second countdown begins on display.
   When 20-second countdown time has ended, recording stops and two (2) beep tones will be heard.

3. Press and hold SCAN button again for two (2) seconds or press MEM/ESC button to cancel recording and return to last operation.

Tri-Watch Mode
Tri-Watch mode gives you one (1) button access to scan a total of three (3) channels of most importance to you. Channel 16 is preprogrammed and will always be one (1) of the scanned locations. Two (2) other channels, either GMRS or  VHF, of your choice can be stored in the radio. These channels can be edited and/or recalled during future engagements of Tri-Watch mode.
NOTE
The radio must be squelched for Tri-Watch mode to function. See page 18 for Squelch procedure.

Tri-Watch Setup
To Program or Edit the Tri-Watch Channels:

1. Press and hold the TRI-WATCH button from Marine or GMRS Standby mode for two (2) seconds to activate TriWatch Setup mode. The MEM icon on the display will turn On and the matrix will display TW MEM ENTER 01.
   NOTE
   The main channel number will flash to indicate channel position.
   If there is no input activity for 15 seconds, the radio will sound three (3) beeps and return to GMRS or Marine Standby mode.

2. Use the Band button to select Marine or GMRS channels.

3. Press Channel Up/Down button to select the desired Tri-Watch channel.

4. Press and release TRI-WATCH button or Call/Enter/Setup button to confirm entry.

5. Repeat steps 2 and 3 to program the remaining additional Tri-Watch memory channel.

6. After programming both Tri-Watch memory channels the radio will immediately engage Tri-Watch mode.

Using Tri-Watch
Tri-Watch Scan Mode:

1. From Marine or GMRS Standby mode, press the TRI-WATCH button. The TW SCAN will display on the matrix along with the three channels stored in the Tri-Watch memory.

2. The radio will scan through the three (3) Tri-Watch memory channels.

3. A signal on any one (1) of the three (3) channels will stop the scan for 10 seconds to allow you to listen to the traffic on that location.
   NOTE
   
   After the Tri-Watch scan stops to monitor a channel, as long as you do not press any buttons within 10 seconds, your radio will automatically resume scanning the TriWatch channels.

4. Press the Channel Up/Down button to resume scanning the Tri-Watch channels or to change the scan direction.

5. To EXIT the Tri-Watch scan, press the TRI-WATCH button again, and the radio will return to Marine or GMRS Standby mode.

Memory Location Mode
Your radio has unlimited memory locations for storing your most frequently used channels. These memory locations can be selected individually or can be scanned. (See page 49 under Memory Location Scan.)
To enter Memory mode, press MEM/ESC button. The display will show the MEM icon and the Memory Channel bank will be displayed on the matrix.
To Program Memory Locations:

1. Press and hold the MEM/ESC button for two (2) seconds. The memory location number will be displayed on the matrix and the MEM icon will be turned On.

2. Use the Channel Up/Down button to advance to the memory location (00-99) you want to program.

3. Press the MEM/ESC button to select the memory location.

4. Use the Band button to select the GMRS or marine band.

5. Use the Channel Up/Down button to change to the channel you want to store into the selected memory location.

6. Press the MEM/ESC button to program that channel. The memory location will be displayed on the matrix again.
   Repeat steps 2 through 5 to program as many additional memories as you want.

7. Press and hold the MEM/ESC button for two (2) seconds. This will return the radio to Memory mode.

8. Press and release the MEM/ESC button again to return to Marine or GMRS Standby mode.

To Recall a Stored Memory Location:

1. Press the MEM/ESC button. The MEM icon will be turned On.
2. Press the Channel Up/Down button to select the memory location. If a memory location has been programmed, its associated channel will display on the LCD. Your radio is now in Marine or GMRS Standby mode on the selected  memory location.

To Exit Memory Location Mode:
Press the MEM/ESC button to return the radio to Marine or GMRS Standby mode. The last channel used in Marine or GMRS Standby mode will now be displayed on the LCD and the MEM icon will disappear.
To Erase Stored Memory Locations:

1. Press and hold the MEM/ESC button for two (2) seconds. The memory location number will be displayed on the matrix and the MEM icon will be turned On.

2. Use the Channel Up/Down button to advance to the memory location you want to erase.

3. Press the MEM/ESC button to select the memory location.

4. Use the Channel Up/Down button to change to the channel to read “00” at the selected memory location.

5. Press the MEM/ESC button to erase that channel.
   Repeat steps 2 through 5 to erase as many additional memories as you want.

6. Press and hold the MEM/ESC button for two (2) seconds. This will return the radio to Memory mode.

7. Press and release the MEM/ESC button again to return to Marine or GMRS Standby mode.

Scan Modes
A signal on any channel will stop the scan for 10 seconds to allow you to listen to the traffic on that location. After 10 seconds, the radio will resume scanning.
Press the Channel Up/Down button to resume scanning before the 10-second pause has completed or to change the scan direction.

VHF Channel Scan
During Channel Scan mode, the radio will rapidly switch from channel to channel through all the channels.
NOTE
The radio must be squelched for Channel Scan mode to function. See page 28 for Squelch procedure.
To Enter Marine Scan:

1. From Marine or GMRS Standby mode, press the SCAN button. The radio will immediately begin to scan the entire channel map selected in the active channel map.
   CHANNEL SCAN will display on the matrix.
   NOTE
   If Priority 16 feature has been selected, channel 16 will checked frequently for activity to insure you will not miss any calls.

2. To EXIT Channel Scan mode, press the SCAN or PTT button again. The SCAN icon will disappear from the LCD and the radio will return to Marine or GMRS Standby mode.
   Memory Location Scan
   During Memory Location Scan mode, the radio will rapidly scan through all pre- assigned memory channels.
   NOTE
   The radio must be squelched for Memory Location Scan mode to function. See page 18 for Squelch procedure.
   NOTE
   If there are fewer than two (2) memory locations programmed in the radio, the Memory Location Scan option will not be available. To program at least two (2) memory locations, see page 34.

To Enter Memory Location Scan:

1. From Marine or GMRS Standby mode, press the MEM/ESC button.

2. Press the SCAN button. The radio will immediately begin to scan all pre-assigned memory channels.
   The MEM icon will show on the LCD, and MEM CHAN SCAN will display on the matrix along with the memory location.

3. To EXIT Memory Location Scan mode, press the SCAN or PTT button again. The MEM icon will disappear from the LCD and the radio will return to Marine or GMRS Standby mode.
   GMRS Scan
   In GMRS mode, there are 3 types of scans – all GMRS channels, CTCSS tones (on the selected channel) and DCS codes (on the selected channel).

To Enter the GMRS Scans:

1. Successive press and release of the SCAN button will toggle betwen all channel scan, CTCSS tone scan and DCS code scan.
2. Press and hold the SCAN button to start the selected scan.
3. To exit a GMRS scan, press the MEM/ESC button or PTT.

Burp Feature
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.
To Activate Burp:

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.

Floating Radio
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.
NOTE
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.

Marine (VHF), GMRS and Weather Standby Band Selections

The BAND button allows you to quickly toggle between the Marine (VHF), GMRS and WX Alert Standby bands.
To Make a Band Selection:
Press BAND button to toggle between the Marine (VHF)
Standby, GMRS Standby or WX Standby.
Marine (VHF) Standby Mode
Marine Standby mode is the default mode for the radio whenever it is turned On. From this mode, you can change current settings by becoming familiar with the different key functions. While in Marine Standby mode, the user will be able to Transmit (Tx) by pressing the Push to Talk (Talk) button. Signals in Receive (Rx) mode will be received on the selected channel(s).
NOTE
Coast Guard alerts are broadcast on Channel 16 and you need to have the WX Alert or SAME turned On to receive NOAA weather alerts. While in Marine Standby mode, you will receive any messages sent on the channel to which you are tuned.

Weather Standby Mode
To enter and exit the Weather Standby mode, press and hold the WX/H-M-L button or press the BAND key.
Receiving a Weather Alert
NOAA broadcasts weather information as described in the NOAA weather channels section on page 75 of this manual.
When NOAA broadcasts a weather alert signal and your radio is in WX Alert Standby mode, the following items will be displayed on the LCD display:

• The WX icon (cloud/sun) icon will be displayed.
• The last used weather channel will be displayed.
• The bar graph will display received signal strength level.
• The WX Alert (triangle) or SAME Alert icon will be displayed if either of these alerts are enabled.
• The matrix will display WEATHER STANDBY.

NOTE
Only one (1) or two (2) of the weather channels will be operating in any given location [only in Receive (Rx) mode]. You will need to select the channel with the strongest signal in your location.
NOTE
When WX Alert is turned on, and NOAA sends the 1050 Hz alert tone, the radio will sound a series of loud beeps regardless of the volume control setting.
NOTE
When SAME Alert is turned on, and NOAA sends a SAME message, the radio will display the NOAA warning message.
NOTE
When either WX or SAME is set on, then in Marine and GMRS standby modes, the radio will display the selected weather channel.

WX Auto Search (SCAN) Mode Function
The purpose of the WX Auto Search (SCAN) function is to enable the receiver to automatically scan for an active WX channel under the following conditions:

1. WX Auto Search (SCAN) function is On.
2. WX Alert is On.
3. The radio is tuned to a Marine or GMRS channel and has entered Power Save mode (meaning there is no signal activity or user input for 10 seconds).
4. The radio software has detected that the current WX channel signal level has dropped below a preset minimum level or is gone completely.

Once these conditions have been met, the software will then scan the Weather channels looking for an active Weather channel. When an active Weather channel is found it will stop the scan and use the new Weather channel to look for the standard 1050Hz alert tone.

SAME Alert Codes
Your HH450 radio has the ability to alert you when NOAA sends out alerts from their Emergency Alert System (EAS). These alerts cover any weather related watches, warnings or statements. Using this system insures that you will always be aware of your local Weather, Civil, and National emergency events.
For a complete list of all the event codes your radio is capable of displaying, please go to the following web address: http://www.nws.noaa.gov/os/eas_codes.shtml#list

GMRS Standby Mode
The GMRS (General Mobile Radio Service) Standby feature is a land-mobile service available for short-distance, two-way communications in the USA. You must have a valid FCC license to communicate on these channels (see page XX).
While in GMRS Standby mode, the user will be able to Transmit (Tx) by pressing the Push to Talk (Talk) button. Signals in
Receive (Rx) mode will be received on the selected channel(s).
When in GMRS Standby mode, the radio has the ability to receive calls as well as transmit calls
NOTE
As GMRS channels are scrolled, you will see CTCSS or DCS icons displayed on the LCD screen if the codes have been previously programmed. You will only hear transmissions from other radios with the equivalent subcodes programmed.
When a transmission is received, the following icons will be displayed.

• Receive (Rx) Icon
• Bar Graph Icon

Transmit (Tx) and Receive (Rx) Modes
Transmit (Tx) and Receive (Rx) modes gives you the ability to interact with other GMRS radios. When you use this capability, be sure to follow the procedures and to observe the courtesies that govern its use so everyone benefits. (See  pages XX through XX) to help you select the proper channels.
When a talk transmission occurs, the following icons will be displayed.

• Transmit (Tx) Icon
• Bar Graph Icon

To Transmit a Message:

1. Check to see that your radio is set to a proper channel for the type of message you plan to send.
2. Toggle to the Low Power setting.
3. With the microphone about 2 in. [51 mm] from your mouth, press and hold the Talk button and speak into the microphone. The Transmit icon will appear on the LCD.
4. Release the Talk button when you are finished speaking. Your radio can only operate in either Transmit (Tx) or Receive (Rx) mode at any given time. You will not hear the response to your message unless the Talk button is released.  Battery Power icon is held at the level it was at during receive.

NOTE
If the Talk button is held down for five (5) minutes, the radio will automatically sound a series of beeps and cease transmitting to prevent unwanted signal generation and battery drain. As soon as the Talk button is released, it can be  pressed again to resume transmission.

Maintenance and Troubleshooting

Maintenance

• Very little maintenance is required to keep your Cobra VHF/GMRS 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.

Troubleshooting

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 limited
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 and hold Backlight/Key Lock button
No answer to calls| Out of range of
other station
Signal is blocked
by terrain| Switch to Medium or High transmit  power or move closer.

Specifications

General

Number of Channels| All U.S., Canadian, and International NOAA Weather Channels, 15 GMRS Channels
---|---
Channel Spacing| VHF – 25 kHz Max., GMRS – 12.5 kHz
Modulation| VHF – 5 kHz Max., GMRS – 2.5 kHz
Input Voltage| 7.4 VDC
Battery Life: 5% TX, 5% RX, 90% Stand-by| Lithium-ion: 8 hrs @ High Power, 14 hrs @ Low Power;
Current Drain: Stand-by Receive Transmit| 45 mA
150 mA
1.8 A @ High power 650 mA @ Low Power
Temperature Range| -20˚C to 50˚C
Radio Dimensions| 4.8 in. x 2.4 in. x 1.4 in. (123 mm x 62 mm x 36 mm) not including antenna
Radio Weight| 0 lbs 8 oz. (228 g) without batteries
Receiver
Frequency Range| VHF 156.050 to 163.275 MHz
GMRS 462.5500 to 467.7250 MHz
Receiver Type| Marine VHF: Double Conversion Super-Heterodyne GMRS & WX: Low if direct conversion.
Sensitivity (typical):| Marine VHF: 12 dB Sinad: -121 dBm
Adjacent Channel Selectivity| Marine: 70dB, GMRS: 50dB, WX: 55dB (typical)
Intermodulation and Rejection| Marine: 70dB, GMRS: 65dB, WX: 55dB (typical)
Spurious and Image Rejection| Marine: 70dB, GMRS: 50dB, WX: 65dB (typical)
AF Output| 400 mW < 5% distortion @ 8 ohms
Transmitter
Frequency Range: TX| VHF 156.025 to 157.425 MHz
GMRS 462.5500 to 462.7250 MHz
RF Output Power| Marine:1, 3 & 6 Watts/GMRS: 1, 2 & 3 Watts
Spurious Emissions| -60 dBc @ High Power, -55 dBc @ Low Power
Microphone Type| Condenser
Frequency Stability| +/-5 ppm
FM Hum and Noise| 40 dB

Specifications subject to change without notice.

Warranty and Trademark Acknowledgement

Limited 3-Year Warranty
For Products Purchased In The U.S.A.
Cobra Electronics Corporation warrants that its Cobra VHF/GMRS radio, and the component parts thereof, will be free of defects in workmanship and materials for a period of three (3) years from the date of first consumer purchase. This warranty may be enforced by the first consumer purchaser, provided that the product is utilized within the U.S.A.
Cobra will, without charge, repair or replace, at its option, defective radios, products or component parts upon delivery to the Cobra Factory Service department, accompanied by proof of the date of first consumer purchase, such as a  duplicated copy of a sales receipt.
You must pay any initial shipping charges required to ship the product for warranty service, but the return charges will be at Cobra’s expense, if the product is repaired or replaced under warranty. This warranty gives you specific legal  rights, and you may also have other rights which may vary from state to state.
Exclusions: This limited warranty does not apply:

1. To any product damaged by accident.
2. In the event of misuse or abuse of the product, or as a result of unauthorized alterations or repairs.
3. If the serial number has been altered, defaced, or removed.
4. If the owner of the product resides outside the U.S.A.
   All implied warranties, including warranties of merchantability and fitness for a particular purpose are limited in duration to the length of this warranty. Cobra shall not be liable for any incidental, consequential or other damages;  including, without limitation, damages resulting from loss of use or cost of installation.
   Some states do not allow limitations on how long an implied warranty lasts and/or do not allow the exclusion or limitation of incidental or consequential damages, so the above limitations may not apply to you.
   For Products Purchased Outside The U.S.A.
   Please contact your local dealer for warranty information.

Trademark Acknowledgement
Cobra®, CobraMarine®, Nothing Comes Close to a Cobra®, and the snake design are registered trademarks of Cobra Electronics Corporation, USA.
Cobra Electronics Corporation™ is a trademark of Cobra Electronics Corporation, USA.

Product Service

Product Service
If you have any questions about operation or installing your new Cobra VHF/GMRS product or if you are missing parts…
Please call Cobra first! DO NOT RETURN THIS PRODUCT TO THE STORE! See customer assistance on page A1.
If your product should require factory service, please call Cobra first before sending your radio. This will ensure the fastest turn-around time on your repair. You may be asked to send your radio to the Cobra factory. It will be necessary to  furnish the following to have the product serviced and returned:

1. For warranty repair, include some form of proof-of-purchase, such as a photocopy of a sales receipt. If you send the original receipt, it cannot be returned.
2. Send the entire product.
3. Enclose a description of what is happening with the radio. Include a typed or clearly printed name and address of where the radio is to be returned.
4. Pack radio securely to prevent damage in transit. If possible, use the original packing material.
5. Ship prepaid and insured by way of a traceable carrier such as United Parcel Service (UPS) or Priority Mail to avoid loss in transit to: Cobra Factory Service, Cobra Electronics Corporation, 6500 West Cortland Street, Chicago,  Illinois 60707 U.S.A.
6.  If the radio is in warranty, upon receipt of your radio, it will either be repaired or exchanged depending on the model. Please allow approximately three (3) to four (4) weeks before contacting Cobra for status. If the radio is out of  warranty, a letter will automatically be sent informing you of the repair charge or replacement charge.
7. If your radio is returned for factory repair, it will be returned to you with default settings restored.
   If you have any questions, please call 773-889-3087 for assistance.

Weather Channel Assignments

Channel Number

| ****

RX Frequency MHz

162.550

| ****

Weather Channel

NOAA

---|---|---
1
2| 162.400| NOAA
3| 162.475| NOAA
4| 162.425| NOAA
5| 162.450| NOAA
6| 162.500| NOAA
7| 162.525| NOAA
8| 161.650| Canada
9| 161.775| Canada
10| 163.275| NOAA

Optional Accessories

Accessories
Your Cobra radio has several optional accessories available to enhance the use of the radio. Some are listed below:

Alkaline Battery Tray
A special alkaline battery tray (P/N CM 110-024) is available as an optional accessory to have as an emergency backup. By using five (5) high-quality AA alkaline batteries, you can have a spare battery backup source for your radio.
NOTE
Alkaline batteries are not rechargeable.

Lapel Speaker/Microphone
A speaker/microphone that attaches to your lapel, by ordering P/N CM 330-001.
This unique accessory allows you to wear the radio on your belt while still being able to communicate with other vessels. A small Push to Talk (PTT) button on the lapel speaker/microphone allows you to answer any incoming call.
LiON Battery
LiON replacement battery (P/N CM 110-026). Can be used with the charger included with this radio.

Antenna
Replacement Antenna P/N CM 300-003

Belt Clip
Replacement Belt Clip P/N CM 240-003

AC Charger
Replacement AC Charger P/N CM 120-005

DC Charger
Replacement DC Charger P/N CM 130-005

Drop-In Battery Charger
Replacement Drop-In Charger P/N CM 110-030

Nothing Comes Close to a Cobra®

References

• Communication Radios & Automotive Electronics | Cobra.com
• CPS | Canadian Power and Sail Squadrons is a non-profit organization and the foremost educational boating authority in Canada
• NOAA Weather Radio
• Nationwide Boat Towing Services & On-Water Assistance | Sea Tow
• Manual-Hub.com – Free PDF manuals!

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