Cobra Electronics MRHH425 Handheld Marine Transceiver with GMRS User Manual

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Date Submitted	2007-02-28 00:00:00
Date Available	2007-02-28 00:00:00
Creation Date	2007-01-26 11:07:23
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MRHH425VP-Body-Eng.qxp:400_Body
VHF
Marine Radio Protocols
Introduction
Channel
Number
20
•
20A
24
25
26
27
28
•
•
•
•
•
•
•
•
60
61
61A
62
62A
22 English
156.900
156.900
156.950
161.550
156.950
156.950
157.000
161.600
157.000
157.000
157.050
161.650
157.050
157.050
157.100
161.700
•
157.100
157.100
•
157.150
161.750
157.150
157.150
157.200
161.800
157.250
161.850
157.300
161.900
157.350
161.950
157.400
162.000
156.025
160.625
156.075
160.675
156.075
156.075
156.125
160.725
156.125
156.125
•
•
•
•
•
23
23A
•
•
22
22A
161.500
•
•
21
21A
156.900
•
•
•
•
Page 22
VHF Marine
Channel Assignments
•
19
19A
1:36 PM
Channel Map
Frequency
USA
Int’l Canada Transmit Receive
18
18A
10/26/06
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Power
Limits
1 watt CAN
MRHH425VP-Body-Eng.qxp:400_Body
VHF
Marine Radio Protocols
Introduction
Channel
18
18A
19
19A
20
20A
21
21A
22
22A
23
23A
10/26/06
1:36 PM
Page 23
VHF Marine
Channel Assignments
Use
Port Operations, Ship Movement
Commercial
Port Operations, Ship Movement
Commercial
Canada (Coast Guard Only); International (Port Operations, Ship Movement)
Port Operations
Port Operations, Ship Movement
U.S. (Government Only); Canada (Coast Guard Only)
Port Operations, Ship Movement
U.S. and Canadian Coast Guard Liaison and Maritime Safety Information
Broadcasts that are announced on Channel 16
Public Correspondence (Marine Operator)
Government Only
24
Public Correspondence (Marine Operator)
25
Public Correspondence (Marine Operator)
26
Public Correspondence (Marine Operator)
27
Public Correspondence (Marine Operator)
28
Public Correspondence (Marine Operator)
60
Public Correspondence (Marine Operator)
61
Public Correspondence (Marine Operator), Port Operation, Ship Movement
61A
62
62A
U.S. (Government Only); Canada (Coast Guard Only);
West Coast (Coast Guard Only); East Coast (Commercial Fishing)
Public Correspondence (Marine Operator), Port Operations, Ship Movement
West Coast (Coast Guard Only); East Coast (Commercial Fishing)
Nothing Comes Close to a Cobra®
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MRHH425VP-Body-Eng.qxp:400_Body
VHF
Marine Radio Protocols
Introduction
Channel
Number
•
•
65A
160.775
156.175
156.175
156.225
160.825
156.225
156.225
156.275
160.875
156.275
156.275
156.325
160.925
•
156.325
156.325
1 watt CAN
1 watt USA
•
•
•
•
•
•
66
Power
Limits
156.175
•
65
Page 24
VHF Marine
Channel Assignments
•
64
64A
1:36 PM
Channel Map
Frequency
USA
Int’l Canada Transmit Receive
63
63A
10/26/06
66A
•
67
•
•
•
156.375
156.375
68
•
•
•
156.425
156.425
69
•
•
•
156.475
156.475
70
•
•
•
RX only
156.525
71
•
•
•
156.575
156.575
72
•
•
•
156.625
156.625
73
•
•
•
156.675
156.675
74
•
•
•
156.725
156.725
156.775
156.775
1 watt Only Int.
156.825
156.825
1 watt Only Int.
156.875
156.875
1 watt USA and CAN
•
•
75
76
77
24 English
•
•
•
MRHH425VP-Body-Eng.qxp:400_Body
VHF
Marine Radio Protocols
Introduction
Channel
63
63A
64
64A
65
65A
66
66A
67
10/26/06
1:36 PM
Page 25
VHF Marine
Channel Assignments
Use
Public Correspondence (Marine Operator), Port Operations, Ship Movement
Port Operations and Commercial, VTS in selected areas
Public Correspondence (Marine Operator), Port Operations, Ship Movement
U.S. (Government Only); Canada (Commercial Fishing)
Public Correspondence (Marine Operator), Port Operations, Ship Movement
Port Operations
Public Correspondence (Marine Operator), Port Operations, Ship Movement
Port Operations
U.S. (Commercial). Used for bridge-to-bridge communications in lower
Mississippi River (Intership Only); Canada (Commercial Fishing), S&R
68
Non-Commercial (Recreational)
69
U.S. (Non-Commercial, Recreational); Canada (Commercial Fishing Only);
International (Intership, Port Operations, Ship Movement)
70
Digital Selective Calling (Voice communications not allowed)
71
U.S. and Canada (Non-Commercial, Recreational);
International (Port Operations, Ship Movement)
72
Non-Commercial (Intership Only)
73
U.S. (Port Operations); Canada (Commercial Fishing Only);
International (Intership, Port Operations, Ship Movement)
74
U.S. (Port Operations); Canada (Commercial Fishing Only);
International (Intership, Port Operations, Ship Movement)
75
Port Operations (Intership Only)
76
Port Operations (Intership Only)
77
Port Operations (Intership only). Restricted to communications
with pilots for movement and docking of ships.
Nothing Comes Close to a Cobra®
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MRHH425VP-Body-Eng.qxp:400_Body
VHF
Marine Radio Protocols
Introduction
Channel
Number
78
78A
79
79A
80
80A
81
81A
82
82A
83
83A
84
84A
85
85A
86
86A
87
87
87A
88
88
88A
10/26/06
1:36 PM
VHF Marine
Channel Assignments
Channel Map
Frequency
USA
Int’l Canada Transmit Receive
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Page 26
156.925
156.925
156.975
156.975
157.025
157.025
157.075
157.075
157.125
157.125
157.175
157.175
157.225
157.225
157.275
157.275
157.325
157.325
157.375
157.375
157.375
161.525
156.925
161.575
156.975
161.625
157.025
161.675
157.075
161.725
157.125
161.775
157.175
161.825
157.225
161.875
157.275
161.925
157.325
161.975
157.375
157.375
157.425
162.025
157.425
157.425
157.425
157.425
Power
Limits
NOTE
Many of the plain-numbered channels, such as 01, 02 and 03, transmit and
receive on different frequencies. This is termed “duplex operation.” The rest of
the plain-numbered channels and all of the A channels, such as 01A, 03A
and 04A, transmit and receive on a single frequency, which is termed “simplex
operation.” Your radio automatically adjusts to these conditions. When in simplex
operation, the A icon will appear on the LCD (see illustration on page A3).
26 English
MRHH425VP-Body-Eng.qxp:400_Body
VHF
Marine Radio Protocols
Introduction
Channel
78
78A
79
79A
80
80A
81
81A
82
82A
83
83A
84
84A
85
85A
86
86A
87
87
87A
88
88
88A
10/26/06
1:36 PM
Page 27
VHF Marine
Channel Assignments
Use
Public Correspondence (Marine Operator)
Non-Commercial (Recreational)
Port Operations, Ship Movement
Commercial (Also Non-Commercial only in Great Lakes)
Port Operations, Ship Movement
Commercial (Also Non-Commercial only in Great Lakes)
Port Operations, Ship Movement
U.S. (Government Only; Environmental Protection Operations)
Public Correspondence (Marine Operator), Port Operation, Ship Movement
U.S. (Government Only); Canada (Coast Guard Only)
Canada (Coast Guard Only)
U.S. (Government Only); Canada (Coast Guard Only)
Public Correspondence (Marine Operator)
Public Correspondence (Marine Operator)
Public Correspondence (Marine Operator)
Public Correspondence (Marine Operator)
Public Correspondence (Marine Operator)
Public Correspondence (Marine Operator)
Public Correspondence (Marine Operator)
Public Correspondence (Marine Operator)
Public Correspondence (Marine Operator)
Public Correspondence (Ship to Coast). In U.S. only within
75 miles of Canadian Border.
Commercial Intership only
Commercial Intership only
NOTE
All channels are preprogrammed at the factory according to international
regulations and those of the FCC (U.S.A.) and Industry Canada (Canada).
They cannot be altered by the user nor can modes of operation be changed
between simplex and duplex.
Nothing Comes Close to a Cobra®
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MRHH425VP-Body-Eng.qxp:400_Body
GMRS Radio Protocols
10/26/06
1:36 PM
Page 28
GMRS Communication and
GMRS FCC Licensing
GMRS Communication
•
This GMRS (General Mobile Radio Service) 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.
The GMRS/FRS frequencies that radio this radio uses are set aside for
communicating with others while hiking, biking, and working; keeping track of
family and friends at a crowded public event; checking with travel companions in
another car; talking with neighbors; arranging meeting spots with others while
shopping at the mall.
Licensed users will be issued a call sign by the FCC, which should be used for
station identification when operating this radio. GMRS users should also cooperate
by engaging in permissible transmissions only, avoiding channel interference with
other GMRS users, and being prudent with the length of their transmission time.
GMRS FCC Licensing
•
This two-way radio operates on GMRS (General Mobile Radio Service) frequencies
which require an FCC (Federal Communications Commission) license. A user must
be licensed prior to transmitting on the GMRS band with this radio. Serious
penalties could result for unlicensed use of GMRS channels, in violation of FCC
rules. Operation of this radio is subject to additional rules specified in 47 C.F.R.
Part 95.
For licensing information and application forms, please call the FCC Hotline at 800418-FORM. Request form #159 and form #605. Questions regarding the license
application should be directed to the FCC at 888-CALL-FCC. Additional information is
available on the FCC’s website at www.fcc.gov.
NOTE
Even if you operate this radio on FRS (Family Radio Service) channels at low
power (1 watt), you are required to have an FCC license. Because this radio
operates in the 1 to 5 watt GMRS power range all GMRS rules apply and will
require you have a GMRS license even for FRS (Family Radio Service)
communication. Normal FRS only radios operate at a maximum power of
1/2 watt (500 milliwatt) power and have an integral (non-detachable) antenna.
28 English
MRHH425VP-Body-Eng.qxp:400_Body
GMRS Radio Protocols
10/26/06
1:36 PM
Page 29
GMRS/FRS Frequency
Allocation and Compatibility
GMRS/FRS Frequency Allocation and Compatibility
The channel numbers in the GMRS Mode on the MR HH425LI model are designed
to “match” the channels on Cobra and other GMRS radios manufactured over the
last few years.
Standard
GMRS/FRS
Channels
MR HH425LI
Channels
Service Type
Frequency (MHz)
10
11
12
13
14
15
16
17
18
19
20
21
22
Not Available
Not Available
Not Available
Not Available
Not Available
Not Available
Not Available
15
16
17
18
19
20
21
22
GMRS/FRS
GMRS/FRS
GMRS/FRS
GMRS/FRS
GMRS/FRS
GMRS/FRS
GMRS/FRS
FRS
FRS
FRS
FRS
FRS
FRS
FRS
GMRS
GMRS
GMRS
GMRS
GMRS
GMRS
GMRS
GMRS
462.5625
462.5875
462.6125
462.6375
462.6625
462.6875
462.7125
467.5625
467.5875
467.6125
467.6375
467.6625
467.6875
467.7125
462.5500
462.5750
462.6000
462.6250
462.6500
462.6750
462.7000
462.7250
•
NOTE
Older Cobra GMRS (non dual band) models with only 15 Channels may
designate different channel numbers for the same frequency. For example, an
older Cobra 15 Channel GMRS model would need to be tuned to Channel 11 in
order to communicate with a 22 Channel GMRS tuned to Channel 15. Please
use the manual for that product to match a frequency chart/map in this section.
Nothing Comes Close to a Cobra®
29
MRHH425VP-Body-Eng.qxp:400_Body
NOAA/SAME Weather Alerts
10/26/06
1:36 PM
Page 30
NOAA Weather Channels and
Alert
NOAA Weather Channels and Alert
•
Monitoring the weather will probably be a frequent use of your radio. NOAA provides
continuous, around-the-clock broadcasts of the latest weather information. Taped
weather messages run every four (4) to six (6) minutes and are revised every two
(2) or three (3) hours, or as needed. The Coast Guard also announces weather and
other safety warnings on Channel 16. Smart boaters keep an eye on safety and an
ear to the radio — and never let the weather catch them unaware.
NOAA Emergency Weather Alert
In the event of a major storm or other weather condition requiring vessels at sea or
on other bodies of water to be notified, NOAA broadcasts a 1050 Hz tone that
receivers such as your CobraMarine VHF radio can detect and warn you of a weather
alert condition. When the Weather Alert mode on your radio is On, this signal will
produce a loud tone from the speaker in the radio and will automatically switch to
the alerting weather channel so the alert broadcast can be heard.
30 English
MRHH425VP-Body-Eng.qxp:400_Body
NOAA/SAME Weather Alerts
10/26/06
1:36 PM
Page 31
NOAA Test Alert System
NOAA Test Alert System
•
To test this system, NOAA broadcasts the 1050 Hz signal every Wednesday sometime
between 11 a.m. and 1 p.m. in each local time zone. Any receiver that can detect the
weather alert tone may use this service to verify that this system is functioning properly.
Weather Frequency/Channel
Channel
RX Frequency MHz Weather Channel
162.550
NOAA
162.400
NOAA
162.475
NOAA
162.425
NOAA
162.450
NOAA
162.500
NOAA
162.525
NOAA
161.650
Canadian
161.775
Canadian
10
163.275
NOAA
Nothing Comes Close to a Cobra®
31
MRHH425VP-Body-Eng.qxp:400_Body
NOAA/SAME Weather Alerts
10/26/06
1:36 PM
Page 32
Specific Area Message
Encoding (SAME) Alerts
Specific Area Message Encoding (SAME) Alerts
•
The MR HH425LI 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 turn to the WX 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-ofmessage static burst followed by a resumption of the NWR broadcast cycle.
NOTE
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.
32 English
MRHH425VP-Body-Eng.qxp:400_Body
Installation
10/26/06
1:36 PM
Page 33
Included in this Package
Included in this Package
•
You should find all of the following items in the
package with your CobraMarine VHF/GMRS radio:
Radio
Wrist Strap
Drop-In Battery Charger
Dual Band Antenna
120V Battery Charger Power Cord
Lithium-Ion Battery Pack
12V Battery Charger Power Cord
Operating Instruction Manual
Spring-Loaded Belt Clip
Alkaline Battery Tray
Nothing Comes Close to a Cobra®
33
MRHH425VP-Body-Eng.qxp:400_Body
VHF Marine Radio Protocols
Installation
10/26/06
1:36 PM
Page 34
Antenna, Wrist Strap
and Belt Clip
Antenna, Wrist Strap and Belt Clip
Install Antenna
•
Antenna Installation
The flexible antenna for the radio is shipped separately in
the package and must be attached before you use the radio.
1. Align the base of the antenna with the socket in the
top of the radio.
2. Screw it all the way into the socket. Be sure that
the seal seats properly.
Wrist Strap
NOTICE
Operating the radio without the antenna in place may
damage the unit. The radio is not waterproof until the
antenna and battery pack are in place with their seals
properly seated.
Wrist Strap
Belt Clip Secured to Belt
The radio comes with the wrist strap already attached.
It can be easily removed if you choose not to use it.
Belt Clip
Insert Knob onto Belt Clip
Secure Radio
34 English
Use the spring-loaded belt clip to carry the radio on your
belt.
1. Press open the belt clip, slide it over the belt and release
the clip.
2. Insert the round guide on the back of the radio into the
guide channel on the back of the belt clip. You must have
the radio upside-down, as shown, to remove it from the
belt clip.
3. Once the knob has been inserted all the way into
the belt clip channel, the radio will swing freely
while being securely retained.
MRHH425VP-Body-Eng.qxp:400_Body
Installation
Introduction
10/26/06
1:36 PM
Page 35
Batteries and Charger
Batteries and Charger
Lithium-Ion Battery Back
•
The radio is shipped with a sealed lithium-ion (LiON) battery
pack (P/N CM 110-006) that is rechargeable.
WARNING
The charger provided with 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 six (6) high-quality AA alkaline
batteries, using the AA alkaline battery tray (provided with
this radio).
Install Battery Pack
Installing the Battery Pack
1. Position the battery pack to line up the three (3) external
alignment tabs to the alignment slots in the radio.
2. Engage the battery pack into the radio until battery pack
is fully seated against the radio housing.
3. Pivot the locking tab up until it snaps into place on the
back of the battery pack.
Nothing Comes Close to a Cobra®
35
MRHH425VP-Body-Eng.qxp:400_Body
Installation
Introduction
Power Sources
Remove Charger Spacer
Initial Battery Charge
10/26/06
1:36 PM
Page 36
Batteries and Charger
Initial Charge
The Cobra-provided lithium-ion (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 the spacer from the charger and insert the entire
radio into the charger. The metal charge contacts on the
radio 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 three (3) to four (4)
hours before use. The light will change back to green
when the battery is fully charged.
WARNING
Only the rechargeable lithium-ion (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 lithiumion (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.
36 English
MRHH425VP-Body-Eng.qxp:400_Body
Installation
Introduction
Locking Tab
10/26/06
1:36 PM
Page 37
Batteries and Charger
To Remove Battery Pack from Radio
1. Pivot the locking tab off of the back of the battery pack to
unlock.
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.
Battery Pack Charging Only
NOTE
The lithium-ion (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 accept old battery
packs for recycling and some municipal waste
disposal agencies have special provisions for battery
disposal.
Alkaline Battery Tray
Alkaline Batteries
There is an alkaline battery tray (P/N CM 110-011) provided
with this radio. The alkaline battery tray is provided as a
backup or “Emergency” power source should the battery
pack run low on power and needs to be recharged. The
radio will transmit at full power when using six (6) 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.
Nothing Comes Close to a Cobra®
37
MRHH425VP-Body-Eng.qxp:400_Body
Installation
Introduction
Fully Charged
10/26/06
1:37 PM
Page 38
Batteries and Charger
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.
Partially Charged
Fully Discharged
NOTICE
Use only the drop-in charger provided by Cobra. Do
not use the charger with alkaline batteries; only the
lithium-ion (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 alkaline battery tray
with fresh alkaline batteries and continue to use your radio.
NOTE
Some radios with LiON batteries have AA or AAA
battery packs which only allow low power transmit.
The optional AA battery tray for the MR HH425LI and
a fresh set of alkaline batteries will allow for full
power emergency transmissions.
38 English
MRHH425VP-Body-Eng.qxp:400_Body
Operating Your Radio
10/26/06
1:37 PM
Page 39
Getting Started
Getting Started
MR HH425LI Radio
•
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 three (3) seconds.
Whenever you press any button except the Talk button on
your radio, a brief tone (beep) 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 (All Bands)
On/Off Volume Control
(Clockwise)
On/Off Volume Control
(Counterclockwise)
The following procedures define common operating
functions of the radio when in either Marine Standby,
GMRS Standby or Weather (WX) Standby modes.
Power/Volume/Squelch Controls
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.
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Introduction
Squelch Control
Speaker/Mic Port
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Getting Started
Squelch Control
Squelch is controlled by turning the lower rotary
concentric knob located directly below the
On/Off/Volume control.
With the power On, turn the knob counterclockwise
until you hear a hissing sound, then turn the knob
clockwise until the hissing stops. This will establish a
“Baseline” squelch. By turning the knob further in a
clockwise direction, you will filter weak and mediumstrength signals. By turning the knob in a
counterclockwise direction (further from your baseline
setting), you will receive weaker signals. Squelch
control filters weak signals and radio frequency (RF)
noise so that you will clearly hear the signals you want.
NOTE
If the Squelch control is set so that you can hear a
continuous hissing sound, the Memory Scan, TriWatch Scan, CTCSS Scan and DCS Scan functions
will be blocked.
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/
Squelch control. Unthread the Speaker/Microphone port
cover to access and install an optional speaker or
microphone into this port.
Talk Button
40 English
Talk Button
Press and hold the Talk button to transmit messages.
Release the Talk button to stop transmitting.
MRHH425VP-Body-Eng.qxp:400_Body
Operating
Your Radio
Introduction
Backlight/Key Lock Button
Key Locked Buttons
Key Lock Icon
10/26/06
1:37 PM
Page 41
Getting Started
Backlight/Key Lock Button
The LCD will be illuminated by the backlight as long as any
button is pressed and will remain On for 10 seconds after
the button is released.
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
 SCAN Button
 MEM/ESC Button
 WX/H-M-L Button
 16/9 Button
 TRI-WATCH Button
 BAND Button
 REW 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.
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Operating
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Introduction
Channel Up/Down Button
Currently On Channel 88
SCAN Button
10/26/06
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Page 42
Getting Started
Channel Up/Down Button
Your radio will Receive (Rx) and Transmit (Tx) VHF and
GMRS signals on the channel indicated on the LCD display.
You can change the channel at any time using the Channel
Up/Down button.
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.
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 scan all channels. The
SCAN icon will display on the LCD display. Scanning begins
at lower channels, and scans to higher channels. Press
Channel Up/Down button to change the scan direction.
When a signal is received in SCAN mode, the radio will
pause 10 seconds before resuming SCAN operation. The
scan will stop when the Talk button is pressed.
In Memory mode, press and release the SCAN button to
scan all memory channels. Because the unit is already in the
Memory Channel mode, only the channels in the memory
bank will be displayed.
NOTE
Memory channels need to be saved to effectively
enter the Memory Channel mode and scan all
memory channels.
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Operating
Your Radio
Introduction
H-M-L Power Button
Call/Enter/Setup Button
10/26/06
1:37 PM
Page 43
Getting Started
High/Medium/Low (H-M-L) Power Button
Your radio can transmit selectively at 1, 3 or 5 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 longrange 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 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. For example, units sold in Canada will not
transmit using the 5 watt High Power mode.
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.
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Introduction
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Setup 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.
NOTE
When in any of the Setup modes (Marine (VHF), GMRS or WX Alert), if you
stop programming for longer than 15 seconds, your entry will be saved and
the radio will go back to the specific Standby mode that you were in when you
started programming. When you return to Setup mode and continue
programming you will see the last “value” displayed. While in any Setup mode,
you will not receive any signal reception.
Marine (VHF) Mode Programming
Programming these features will allow you to customize certain features of this
radio to enhance your “On-Water” audio needs.
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.
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Operating
Your Radio
Introduction
Set Channel Map
Active Channel Map Icon
10/26/06
1:37 PM
Page 45
Setup 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
on pages 20 through 27). 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 first mode that
begins the Marine (VHF) Setup programming.
2. U, I and C icons 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 programming mode.
NOTE
One or two of the channel maps might have been
disabled for sales of this radio in some countries.
Channel Up/Down Button
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Introduction
VOX Mode
VOX Level
10/26/06
1:37 PM
Page 46
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.
To set VOX Sensitivity Level:
1. The display will show LE (level). VOX icon and 05
will be flashing.
NOTE
VOX sensitivity level is only visible when VOX is On.
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.
NOTE
Once set, this is a global setting when in all radio
modes.
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Operating
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Introduction
VibrAlert® Tone Alert
10/26/06
1:37 PM
Page 47
Setup Mode Programming
VibrAlert® Mode
In VibrAlert® mode, your radio can alert you to incoming
signals by sounding an audible call tone, a silent vibration or
both.
NOTE
VOX will be turned Off automatically when the radio
is turned Off. This will avoid accidental transmissions.
To set VibrAlert®:
1. The display will show either the Vibrate icon (shake
bars), Call Tone icon (bell shape) or a combination
VibrAlert® icon.
2. The present setting of either, 01, 02 or 03 will be
flashing.
3. Press Channel Up/Down button to select one of the
following:
01 = VibrAlert® On (both shake bars and bell
shape).
02 = Vibrate On (shake bars only).
03 = Call Tone Only On (bell shape only).
4. 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.
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Introduction
Call Tone Mode
10/26/06
1:37 PM
Page 48
Setup Mode Programming
Call Tone Mode
In Call Tone mode, your radio can alert you to incoming
signals by sounding an audible call tone, a silent vibration or
both. This setting will also 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 LCD will display the letter “C” and 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 programming mode.
NOTE
Call Tones are not usually used for Marine VHF
communications. We allow you to turn it On for your
unique communication needs.
NOTE
Once set, this is a global setting when in all radio
modes.
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Operating
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Introduction
Roger Beep Mode
10/26/06
1:37 PM
Page 49
Setup Mode Programming
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 and ON or OFF flashing.
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 programming mode.
NOTE
Once set, this is a global setting when in all radio
modes.
Key Tone Mode
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 and ON or OFF
flashing.
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.
You have now ended Marine (VHF) Setup programming
mode and will enter Marine Standby mode.
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Introduction
GMRS Mode
10/26/06
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Page 50
Setup 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.
CTCSS Code Entry
CTCSS Code Number
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. Only radios with
the same subcode set will hear your transmission.
To Set CTCSS Code Entry:
1. The CTCSS code entry mode is the first mode that
begins the GMRS Setup programming.
2. 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.
3. 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 must be Off. If DCS is On,
then CTCSS must be Off.
4. Press Channel Up/Down button to change code
number, or press and hold Channel Up/Down
button to rapid advance (scroll).
5. Press Call/Enter/Setup button to save entry and
move to the next setup programming mode.
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