UNIDEN
MARINE
2-WAY
VHF RADIO
MHS450
OWNER'S MANUAL
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Uniden MHS450 Radio Owner’s Manual
3
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Uniden MHS450 Radio Owner’s Manual
A Quick Start Guide for the MHS450
Follow these steps to get going!
1. Rotate VOLUME until the display lights. The Power
On tone sounds. The default display shows channel
16 in the US marine band, a 5 watt level and the
purpose of the channel such as DISTRESS at the
bottom edge.
ꢀ. Press ▲ or ▼ to change channels. The marine
channels begin at 01 and continue, in a closed loop,
through 88A.
06 Safety
05A VTS/Com
03A CG Only
01A VTS/Com
88A Commerc
88 Mar Opr
87 Mar Opr
A
Memory
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3. To listen to your local NOAA weather channel, press
WX/ALERT. One channel of the 10 available will be
best. Press WX/ALERT to return to marine channels.
4. To transmit, repeated press 1/2.5/5W to select a
power level. Then, press ▲ or ▼ to select a channel.
5. Press PTT. The display confirms transmitting at the
bottom of the screen and your power level as well.
Storing a Channel in Memory
The MHS450 radio can scan channels you have stored in
memory. You can store marine channels for later scanning.
To store a channel in memory, follow these steps:
1. Use ▲ or ▼ until you reach a channel you want to
store.
ꢀ. Press and hold SCAN/MEM to store the channel
in memory. A double beep sounds to confirm your
action.
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6
Uniden MHS450 Radio Owner’s Manual
3. CHANNEL STORED appears at the bottom of the
display.
4. If you take no further action, the screen returns to the
standard marine screen in 3-seconds.
Now that you have several channels stored in memory, you
can choose to scan them in three separate methods, Normal
Scanning, Dual Watch Scanning, and Triple Watch Scanning.
Normal Scanning
Marine Band
5 Watts
Normal Scanning lets you
scan all the channels you store
USA
Alert
Memory
in memory using the steps in
the section preceeding this
one.
A
To activate Normal Scan
mode, momentarily press
CHANNEL SCAN
SCAN/MEM. The radio scans all the channels stored
in memory from lowest to highest. The display shows
CHANNEL SCAN at the bottom.
MEM
MEM
MEM
MEM
MEM
MEM
MEM
MEM
Channel Scan of 8 Channels Stored in Memory
When you scan those channels, each channel is checked in
order and the scan sequence repeats until you interupt it.
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DualWatch Scanning
Marine channel 9 is reserved as a backup hailing, calling
channel for areas of high marine traffic. Channel 16 is the
reserved Coast Guard Distress, hailing channel.
Press and hold 16/9/TRI. If you have set DualWatch as your
default mode using the RADIO MENU options (see page ꢀ8),
the radio begins to include a check of Channel 16 along with
any other stored channels.
2 seconds
MEM
MEM
MEM
MEM
MEM
MEM
MEM
MEM
16
TripleWatch Scanning
Using the option in the RADIO MENU choices (see page ꢀ8),
you can choose to have the radio not only scan the channels
you stored and Channel 16, but also Channel 9, the backup
hailing, calling channel.
When you press and hold 16/9/TRI, the radio scans
according to the sequence shown below. In this case, the
radio is set to marine channel ꢀ5 and TripleWatch has been
selected from the RADIO MENU.
09
16
25
TripleWatch Scan of Marine Ch. 25,
Hailing Ch. 9, and Distress Ch. 16
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Uniden MHS450 Radio Owner’s Manual
Weather Channel, Stored Channels, and
Dual/TripleWatch Scanning
You can store your NOAA weather channel in memory in the
same manner as any other marine channel using the steps
For this example, you have stored 8 marine channels. You
have pressed WX/ALERT to display one weather channel.
You have selected the TripleWatch option using the RADIO
MENU setup. Now you press SCAN/MEM. Scanning takes
place in the order shown below. Every ꢀ seconds, during
the scanning of the 8 marine channels, the radio checks
channels 9 and 16. Then, approximately every 7 seconds,
the radio checks the selected weather channel and then
channels 9 and 16.
~7 seconds
2 seconds
MEM
MEM
MEM
MEM
MEM
MEM
MEM
MEM
09
16
09
16
WX
Scan Sequence of Stored Channels,
TripleWatch, and TripleWatch with WX = Channel Check
To learn about other sections which contain details dealing
with General Setup, Battery Operation and Charging, Menu
Options, Storing Channels, Scanning Channels, and using
the special features of either Triple or DualWatch, consult the
Table of Contents which immediately preceeds these Quick
Start pages.
Uniden MHS450 Radio Owner’s Manual
9
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Maritime Radio Services Operation
Warning! This transmitter will operate on channels/
frequencies that have restricted use in the United States.
The channel assignments include frequencies assigned for
exclusive use of the U.S. Coast Guard, use in Canada, and
use in international waters. Operation on these frequencies
without proper authorization is strictly forbidden. For
frequencies/channels that are currently for use in the U.S.
without an individual license, please contact the FCC Call
Center at 1-888-CALL-FCC (1-888-ꢀꢀ5-53ꢀꢀ).
For individuals requiring a license, such as commercial
users, you should obtain a license application from your
nearest FCC field office (for US users) or Industry Canada
(for Canadian users).
FCC/Industry Canada Information
Certification FCC Part 80 or RSS-182/188
Output Power 5W
Emission 16K0F3E, 16K0FꢀD
Transmitter Frequency Range 156.0ꢀ5 to 157.4ꢀ5 MHz
This device complies with Part 80 of the FCC Rules, as
well as Part 15 of the FCC Rules. Operation is subject
to the condition that this device does not cause harmful
interference.
Unauthorized changes or modifications to this equipment
may void compliance with the FCC Rules. Any change
or modification must be approved in writing by Uniden.
Changes or modifications not approved by Uniden could void
the user’s authority to operate the equipment.
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Uniden MHS450 Radio Owner’s Manual
FCC RF Exposure Information
WARNING! Read this information before using the radio
In August 1996 the Federal Communications Commission (FCC)
of the United States with its action in Report and Order FCC 96-
3ꢀ6 adopted an updated safety standard for human exposure to
radio frequency electromagnetic energy emitted by FCC regulated
transmitters. Those guidelines are consistent with the safety
standard previously set by both U.S. and international standards
bodies. The design of the radio complies with the FCC guidelines
and these international standards.
Never allow children to operate the radio without adult supervision
and the knowledge of the following guidelines.
WARNING! It is up to the user to properly operate this radio
transmitter to insure safe operation. Please adhere to the following:
Use only the supplied or an approved antenna. Unauthorized
antennas, modifications, or attachments could impair call quality,
damage the radio, or result in violation of FCC regulations.
Do not use the radio with a damaged antenna. If a damaged antenna
comes into contact with the skin, a minor burn may result. Please
contact your local dealer for a replacement antenna.
Body-worn Operation This device was tested for typical body-worn
operations using the supplied belt-clip. To maintain compliance with
FCC RF exposure requirements, body-worn operations are restricted
to the supplied belt-clip. For hand-held operation, the radio should be
held 1 inch from the user’s face. The use of accessories that do not
satisfy these requirements may not comply with FCC RF exposure
requirements and should be avoided. For more information about RF
Uniden MHS450 Radio Owner’s Manual
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Lithium Ion Battery Pack Warning
• This equipment contains a rechargeable Lithium Ion
battery.
• The rechargeable Lithium Ion battery contained in this
equipment may explode if disposed of in a fire.
• Do not short-circuit the Battery Pack.
• Do not charge the rechargeable Lithium Ion battery used in
this equipment in any charger other than the one designed
to charge this battery as specified in the owner’s manual.
Using another charger may damage the battery or cause
the Battery Pack to explode.
Lithium Ion batteries must be recycled or disposed of
properly.
Avoid exposing the Lithium Ion battery, attached or
unattached to the radio, in direct sunlight, heated cars, or in
areas with temperatures below -4°F (-ꢀ0°C) or above +140°F
(+60°C). Exposing the chemical contained within the battery
pack to temperatures above +140°F (+60°C) may cause the
battery to rupture, fail, or reduce performance.
In case of exposure to the cell contents, wash the affected
area thoroughly, and seek medical attention.
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1ꢀ
Uniden MHS450 Radio Owner’s Manual
What’s Included
AC550
ANT450
AC Adapter
Antenna
MHS450 Radio
BP550
RSC550
DC550
Charging Cradle
Lithium Ion
Battery Pack
BT550
DC Adapter
CLIP550
Mounting
Hardware
Belt Clip
Alkaline Battery Case
(batteries not included)
WNERS
O
WNERS
O
AL
U
MAN
Accessory ID
AL
U
MAN
numbers such as
are provided to help you
order replacements
CLIP550
Owners Manuals and
Other Printed Materials
should that be neccessary.
Wrist Strap
If any of these items are missing from the box, contact
Uniden or call 1-800-554-3988.
Uniden MHS450 Radio Owner’s Manual
13
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Uniden MHS450
Introduction
Your Uniden MHS450 represents the latest in marine radio
technology in a conveniently sized and rugged package. It
has features you’ll come to count on for day in and day out
use. The product combines size, value, and performance
that makes it a good choice for an all around marine
communications radio.
Features
The MHS450 brings the following key features to make
marine radio useful and easy:
• Complete Marine VHF channels (USA-1A to 88A) for
the U.S., Canada, and International waters — let you
communicate with standard marine radio operators.
• National Oceanic and Atmospheric Administration
(NOAA) Weather channels — let you listen to the local
operational channel of the ten available.
• NOAA Weather Alert — provides a siren tone warning
of a serious impending weather event and emergency
weather warnings, broadcast by NOAA.
• Emergency CH 16 (Coast Guard/Distress Hailing) and
CH9 (Calling/Hail Secondary) operation
• Memory Scan — lets you store a channel (frequency) into
memory for scanning at another time using Dual or Triple
Watch or the standard Scan feature.
• Triple and DualWatch Operation — In TripleWatch
operation, the radio monitors the current channel, then
the Coast Guard/Distress/Hailing channels 16 and 9.
In DualWatch, the radio monitors the channel in use
(standard or weather) then channel 16 in that order.
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Uniden MHS450 Radio Owner’s Manual
• Transmitter Power Level Select — lets you select an
output power settings of 1, ꢀ.5, and 5 watts except for
certain restricted channels.
• Channel Select Keys — let you easily navigate up and
down the channel list to the desired channel. They also let
you quickly choose all desired Radio Menu options.
• Submersible — The radio is JIS7 compliant. This means it
remains watertight if submerged in 1 meter of water for 30
minutes.
• Battery Power Level Display and Tone — clearly
indicates five levels of battery power. Sounds an alert
tone when battery power reaches a level before complete
failure to operate.
• Battery Save — during specific transmit, operations, the
radio powers down to extend battery life.
• Key Lock ON/OFF — lets you enable a keypad
lock to prevent accidental changes while powered on.
The feature becomes unlocked when powered off and on
again. You can also quickly disable the feature by pressing
and holding down this key.
Uniden MHS450 Radio Owner’s Manual
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MHS450 Controls
13
14
15
3
4
1
2
5
12
6
7
8
9
10
11
18
13
4
1
2
3
16
17
16
16
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Uniden MHS450 Radio Owner’s Manual
1. Antenna — Removable, and flexible for convenience.
Watertight connector for reliability.
2. Watertight Ext. Speaker/Mic Jack — Unscrew the
cap and insert an approved mic/speaker to maintain
submersability.
3. Volume-Power ON/OFF Control - Rotate to turn on
power and set volume to a comfortable listening level.
4. Squelch Control — Rotate clockwise until the signal is
heard but not the noise.
5. Wrist Strap Anchor — Thread and loop the supplied
wrist strap to conveniently carry the radio.
6. WX/ALERT — Press to change the mode to Weather
Channel reception. Press and hold to activate the Weather
Alert feature.
7. SCAN/MEM — Press to set Memory Channel SCAN on or
off. Press and hold to store the current channel into memory.
8. 1/2.5/5w — Press to select the output power unless fixed
by regulations.
9. 16/9/TRI — Press to switch immediately to the Coast
Guard/Distress/Hailing channel 16 or the secondary Calling
Hailing channel 9. Press and hold to enable Triple Watch or
Dual Watch monitoring.
10. MENU — Press to display the user-settable menu
options.
11. ENTER — Press to select or store a chosen menu
option.
12. ▲▼ — Press to select channels above or below your
currently selected channel. Press and hold to change
channels rapidly. Press to scroll through Radio Menu options.
13. Belt Clip —Squeeze and attach to your belt for
convenient carrying.
14. PTT — Press to transmit.
Uniden MHS450 Radio Owner’s Manual
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15. Light/Lock — Press to activate the Backlight. Press and
hold to lock the Keypad.
16. Battery Connection Area and Battery Recharging
Contacts— Install the supplied Lithium Ion Rechargeable
Battery being sure to position the pack as shown in the
section Batteries. To recharge the installed Lithium Ion
battery, place the MHS450 into the Charger Cradle. The
contacts at the bottom edge of the radio receive the required
voltage and current from the cradle to completely recharge
the battery in about 4 hours.
17. Battery Latch — Lift the latch to remove and replace
the Lithium-Ion battery or to install the Alkaline Battery case.
18. MIC — Speak clearly into the microphone aperture
when transmitting for best results. Position the mic at least 4
inches from your mouth.
Radio Charger Cradle
21
20
19
19. Front Charging Indicator — Lights during battery
charging and goes off when the battery is fully charged. If a
fully charged battery is placed in the cradle, the LED does
not light and no charging takes place. While you can monitor
incoming calls while the radio is in the charger, do not
attempt to transmit while it is in the cradle.
20. DC Input Jack — Connect the AC adapter then plug the
adapter into a standard 1ꢀ0/ꢀ40V AC outlet. The DC adapter
connects to a vessel’s 1ꢀV socket and this jack.
21. Charging Latch — Holds the radio in place when you
insert it into the cradle.
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Uniden MHS450 Radio Owner’s Manual
LCD Display
1 Watt or 2.5 Watts or 5 Watts — indicates present transmit
power. Not displayed when receiving weather frequencies.
Not displayed for those channels on which transmitting is
prohibited. The initial setting is 5W.
USA or INT or CAN (UIC) — indicates the frequency band in
use for marine operation.
Memory — displayed when the radio displays a channel
stored in memory.
Alert — displays when weather alert is enabled.
SCAN — displays when the radio is set to scan mode.
TRIWATCH or DUALWATCH — displayed when either mode
is active.
Locked — displayed when the keypad is locked.
Battery Level Icon — displays one of five different indicators
to show the battery power level.
MODE Indicator Line — the bottom of the screen shows the
selected mode such as Standard Marine Channels, Weather,
Dual or Triple Watch, Transmitting, and more. For full details,
refer to the specific section of the manual.
CHANNEL — shows the currently selected channel number.
See the USA, Canadian, and International channel charts in
the back of this manual.
Uniden MHS450 Radio Owner’s Manual
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Owner Manual Conventions
To indicate a key, button, knob or other physical control, we
print the label in BOLD UPPER CASE. To indicate an LCD
(display) label, option, or selection, we use UPPER or Lower
Case italic labels such as MENU, 5 Seconds, etc.
You will also occasionally see an option labeled as (default).
This means that the option is set in the manner indicated at
the factory and is the setting when you first apply power. If
you choose not to alter it, the default is the setting used by
the radio.
Indicator Sounds
The radio sounds several tones designed to convey
important information. Become familiar with them to use the
radio more effectively.
Power On — a rapidly rising tone sounds to confirm that
power is applied.
Keypad Touch Single Tone — sounds to confirm you have
pressed a single key
Keypad Touch Double Tone — sounds to confirm you
pressed and held down a key for ꢀ seconds.
Error Tone — sounds to indicate an invalid key press or
operation.
PTT Error Tone — sounds to indicate an invalid press of the
PTT switch.
WX ALERT Tone — a rising and falling tone sounds when a
weather alert is received and decoded.
PTT Time Out Tone (PTT Error Tone) — sounds when
your continuous transmitting time exceeds 5 minutes. Also
sounds if you attempt to transmit with low power battery. If
the battery icon continues to blink once you stop pressing the
PTT key, you must recharge/replace the currently installed
battery(s)
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ꢀ0
Uniden MHS450 Radio Owner’s Manual
Batteries
Your Uniden MHS450 comes equipped with a Lithium Ion
battery which snaps into the back of the radio and secures
with a latch. The battery has a minimal charge when shipped.
Before use, place the radio in the Charging Cradle and
charge the battery for four hours. Note that unlike some other
types of rechargeable batteries, a Lithium Ion battery can be
“topped-off” as needed with no degradation of performance.
Installing the Lithium Ion Battery Pack
1. To install the Lithium Ion Battery Pack, insert the
upper contacts on the lower edge of the battery area
on the radio back as shown in the first illustration.
ꢀ. Lower the pack until it is flat in the chamber
3. Bring the locking latch up and lock it into place to
secure the pack.
Using the Alkaline Battery Pack
The radio is supplied with a battery pack that can hold four
AAA type alkaline batteries (not supplied). For longest useful
life we suggest using an extra strength battery such as
®
Duracell Ultra batteries.
Note: When powering the radio by alkaline batteries,
transmit power is limited to a maximum of ꢀ.5 watts.
Uniden MHS450 Radio Owner’s Manual
ꢀ1
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To install the four AAA batteries in the alkaline battery pack,
refer to the illustrations and the following steps.
1. Hold the lower part of the pack and with the other
hand, lift the cover to reveal the contacts in the
chamber. Note the polarity markings.
ꢀ. Position the alkaline batteries according to the + and
- terminals and snap each into place.
3. Close the cover as shown.
Using alkaline batteries let you continue to use the radio
until you have an opportunity to fully recharge your primary
Lithium Ion Battery pack. Be sure to dispose of the alkaline
batteries properly according to their package information.
Warning - although the design of the case prevents
accidental charging of installed alkaline batteries, for safety,
never attempt to recharge alkaline batteries by defeating the
case design or recharging outside of the case.
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ꢀꢀ
Uniden MHS450 Radio Owner’s Manual
Power AutoSave and Battery Life Indication
A special circuit conserves power when constant power
is not required. The battery powers down during receiving
unless squelch is operating. However, the save feature does
not function during transmitting, weather alert settings or
TripleWatch where power is always required. The Battery
Level icon has 5 levels to indicate the voltage. When the
battery is almost dead, BATTERY LOW appears and the
Battery Level icon blinks.
Note: During the time you press PTT to transmit, you may
notice the power level indicator drop to a lower level and
then return to a higher level once you stop transmitting.
This is normal and merely indicates that additional power is
required to transmit compared to that used during reception.
Alkaline Batteries and Radio Performance
If you use alkaline batteries for emergency purposes, note
that the transmitting power output may suffer as the alkaline
batteries become weak and near the end of their useful life.
In such cases, you might not be able to transmit with a full
ꢀ.5 watts of power. Replace the batteries with known fresh
batteries to be sure, or switch to a fully charged Lithium Ion
battery pack.
When the
appears ( Low Battery), or you hear the
Low Battery alert tone sound, be sure to replace all alkaline
batteries in use. Doing so removes any chance of degraded
radio performance and operation that can occur toward the
end of the batteries’ useful life.
Uniden MHS450 Radio Owner’s Manual
ꢀ3
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Mounting the Charging Cradle
You must charge the Lithium Ion Battery Pack before you
use the radio for the first time. To facilitate convenient
charging we suggest mounting the charger cradle to either a
counter top or wall. Use the AC Adapter at home and the DC
Adapter on your boat.
To Mount the Cradle on a Counter Top
Locate the three holes provided in the
flange surrounding the cradle. Using the
holes as a template, mark the surface.
Center punch and drill three holes to
accommodate the provided screws and
washers.
Mounting on a Wall
Using the keyholes in the rear of the cradle as a template,
confirm that the area on the wall has solid backing such
as a wooden beam. Then drill holes and use the screws
and washers provided. Otherwise, select other mounting
hardware (not supplied) that is appropriate for the mounting
material.
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ꢀ4
Uniden MHS450 Radio Owner’s Manual
Attaching the Belt Clip
To conveniently carry the radio, attach the provided belt clip
as follows.
• Align the clip mounting hole with the mounting post
as shown. Place the clip on the post and slide it in the
direction of the arrow until you hear a click.
• To remove the clip, rotate the clip so the indentation
is toward the bottom of the radio. Move the clip in the
direction of the arrow and lift it off the post.
L
O
V
Q
S
L
O
V
Q
S
Attach
L
O
V
L
O
Q
V
S
Q
S
Remove
Uniden MHS450 Radio Owner’s Manual
ꢀ5
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Getting Started
To start using your MHS450, follow the steps below.
1. Rotate VOLUME until the display
lights and the Power On tone
sounds. The Uniden animated
‘splash’ screen displays followed
by the model number. Set the
volume to a comfortable listening level. The display
shows channel 16 (default) in the US marine band,
a 5 watt level and the label DISTRESS at the bottom
edge. Press ▲ or ▼ to change channels. The marine
channels begin at 01 and continue, in a closed loop,
through 88A. Using either key you can manually
select a channel to use.
ꢀ.Press WX to switch to the weather channels. Ten
channels are designated as weather channels. All
carry the same information. One will provide the best
reception for your particular area. Use ▲ or ▼ to
cycle through the ten channels until you locate the
one with the best reception. Press WX to return to
marine channels 1 to 88A.
06 Safety
05A VTS/Com
03A CG Only
Selecting a Channel
To receive transmissions and transmit
signals, select a working channel.
When you first apply power, the screen
displays the default band (Marine USA),
01A VTS/Com
88A Commerc
88 Mar Opr
87 Mar Opr
A
Memory
the default power setting (5W), and the battery power level
icon.
To change the channel, press ▲ or ▼. The default channel
names appear next to the channel numbers along the left
border of the screen.
To cycle rapidly through the channels, press and hold either
▲ or ▼ for about one-half second.
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ꢀ6
Uniden MHS450 Radio Owner’s Manual
Transmitting Power Level
You can select the transmitting power for all channels except
those designated as Receive Only or Low Power Channels
(see the Status column of the Frequency Charts for more
details).
Repeatedly press 1/2.5/5W. Each time you press the button,
the power output level changes and the corresponding icon
appears on the display.
Note: for those channels designated as 1W maximum, even
though you have set the power level to either ꢀ.5 or 5W,
1W is displayed and used. Channels 13,17,67, and 77 in
the US are an exception. Normally these channels are also
designated for normal operation as 1W channels. However,
in emergency, if you press and hold the PTT switch and at
the same time you momentarily press 1/2.5/5W, the power
level changes from 1 to 5W with the Li-Ion battery or 1 to
ꢀ.5W with alkaline batteries installed.
You cannot override the 1W power level setting for
channels 75 and 76.
Transmitting
To transmit, follow the steps below.
1. Press ▲ or ▼ to select a channel. The selected
channel number appears on the display along with
the country label, and the selected power setting.
ꢀ. Press the PTT switch.
TRANSMITTING appears at the
bottom of the screen and remains
displayed as long as you hold
down the PTT switch.
Uniden MHS450 Radio Owner’s Manual
ꢀ7
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Note:
• You cannot transmit on the weather frequencies. They are
designated ‘receive’ only. An error tones sounds when you
press the PTT switch and a weather channel is selected.
The displayed weather channel number flashes, and
RELEASE PTT KEY is displayed to remind you that you
cannot transmit on the selected channel.
• You cannot transmit on channel 70, and 15 in the USA.
“Channel 70 is reserved for digital data only while channel
15 is reserved for receive only.” If you attempt to transmit,
you see RELEASE PTT KEY on the bottom of the screen.
• Do not hold down the PTT switch while turning on the
radio. An error tone sounds and the same message
appears.
• Pressing PTT disables Scanning, TripleWatch checking
and DualWatch checking. If the channel has no carrier, the
first press of PTT takes the radio out of scan mode. Press
PTT to activate transmitting.
• Continuous transmitting is limited to 5 minutes by
regulations. After this time, an error tone sounds and
RELEASE PTT KEY displays. After you release PTT,
pressing PTT restarts the 5-minute time interval again.
Using the Radio Menu Options
The MHS450 lets you select options that personalize your
use of the radio and makes using it more convenient.
Press MENU to access the multi-choice radio menu. RADIO
MENU appears at the top of the screen. Press MENU again
to return to the default marine mode or use ▲ or ▼ to move
and highlight the desired menu option.
Note: if during any of the following operations you fail to
press a key or make a selection in more than 30 seconds,
the radio returns to standard marine mode.
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ꢀ8
Uniden MHS450 Radio Owner’s Manual
USA/CAN/INT (U.I.C.) — Settings
The radio is set as a factory default to the USA channel
frequencies. To change to either Canadian [CAN] or
International [INT] channels follow these steps.
UIC CHANNELS
1. Press MENU and highlight USA/
USA Mode
CAN/INT. Press ENTER.
Canadian Mode
ꢀ. Press either ▲ or ▼ until the
Intl Mode
country Mode is highlighted. Press
ENTER to select it.
Exit
3. Highlight EXIT to exit the menu then press ENTER to
return to radio operation.
Note: the radio remembers the last selection setting you make
when powered down.
Lamp (Backlight) Adjust
The backlight that provides
convenient illumination of the keys
LAMP ADJUST
Always Off
and the LCD has three settings.
Timer
Always On
1. Press ▲ or ▼ to scroll to
Exit
Lamp Adjust. Press ENTER.
LAMP ADJUST appears at the top of the screen.
Highlight either Always Off, Always On, or Timer.
ꢀ. Press ENTER to select your choice.
3. To set the on-time duration of the backlight, select
Timer then highlight either 5 seconds (default), 30
seconds, 1 minute, or 5 minutes then press ENTER. A
double beep sounds to confirm your selection.
4. Scroll to EXIT and press ENTER to return to the
RADIO MENU menu screen.
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Adjusting Display Contrast
You can adjust the contrast setting of the
LCD for various viewing conditions.
Contrast
Adjust
1. Press ▲ or ▼ from the RADIO
MENU screen to highlight
Contrast. Press ENTER.
ꢀ. Press ▲ or ▼ to increase or decrease the level which
is indicated by the number displayed (01 to 10)
and the thermometer bar. You see the screen contrast
change as you change the setting from 01 to 10.
3. Press ENTER to save your selection. The display
returns to the RADIO MENU screen.
Setting Dual or TriWatch
There are two specialty channels, 16, and
Dual/Tri Watch
9. Channel 16 is the primary distress/
16/9 TriWatch
Coast Guard/Hailing channel while Chan-
16 DualWatch
nel 9 is typically the backup hailing/calling
Exit
channel for areas where there is higher
level of marine traffic. Depending on your location, you can
choose to monitor both distress channel 16, the extra hailing
channel 9 as well as the radio channel you are otherwise using
(TRIWATCH), or you can choose to only monitor channel 16
and your regular channel (DUALWATCH) which lets the radio
check each channel more frequently.
1. From the RADIO MENU screen,
use ▲ or ▼ to reach the Dual/
TriWatch option. Press ENTER.
ꢀ. Press either ▲ or ▼ to reach
either 16/9 TriWatch (default) or 16 DualWatch. Press
ENTER to select it. A double beep sounds and the
radio returns to the RADIO MENU screen.
3. Press MENU again to return to the marine mode.
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Uniden MHS450 Radio Owner’s Manual
Setting the Key Beep
Your MHS450 confirms a key press by
sounding a short single or double beep
(default). You can disable this sound.
KEY BEEP
On
Off
Exit
1. From the RADIO MENU screen,
press ▲ or ▼ to highlight the KEY BEEP option.
Press ENTER to select it.
ꢀ. Press ▲ or ▼ to select On or Off or Exit . Press
ENTER to save your selection. The display returns to
the RADIO MENU screen.
Setting the Key Lock
Marine Band
5 Watts
USA
To prevent keys from being accidentally
operated, set the Key Lock. Hold down
LIGHT/LOCK for ꢀ-seconds. KEYPAD
Locked
LOCKED appears on the display
KEYPAD LOCKED
bottom for 3-seconds then returns to
the standard screen. Locked remains next to the channel
number to remind you that the locked option is enabled.
During Key Lock mode, you can adjust only the following
controls:
• PTT switch
• Light/Lock key
• Volume
• Squelch
• 1/ꢀ.5/5W (Only while pressing and holding PTT.)
If any other control is used, an error tone sounds.
To disable the keypad lock, press and hold LIGHT/LOCK
for about ꢀ-seconds or turn power off then on. KEYPAD
UNLOCKED appears on the display using LIGHT/LOCK.
Note: if the radio receives either a weather alert or decodes
a severe weather S.A.M.E. code transmission, the keypad
automatically unlocks.
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Manually Selecting Coast Guard/Distress/
Hailing Channels
In addition to using Triple or Dual Watch to monitor the Coast
Guard/Distress/Hailing channels, you can manually select
them at any time.
To select your Coast Guard/Distress/Hailing channel,
repeatedly press 16/9/TRI. At the first
press, the radio switches to channel 16,
the primary Coast Guard/Distress/Hailing
channel. 16 appears on the screen. Press
the button again to switch to channel 9, the
backup calling channel. 9 appears and NON COMMERCIAL
appears at the bottom. Press again to return to the standard
marine channels.
If you are listening to a weather (WX) channel and you
press 16/9/TRI, the radio drops out of weather mode and
switches to channel 16 and displays 16. If you are also set to
TriWatch, the radio begin to check 9, then 16 then the marine
channel in use prior to selecting the weather mode.
Storing a Channel in Memory
Once you have stored channels in
memory, you can set the radio to scan
those channels for activity. To select and
store a channel follow these steps.
1. Use ▲ or ▼ until you reach a channel you want to
store.
ꢀ. Press and hold SCAN/MEM to store the channel
in memory. A double beep sounds to confirm your
action.
3. CHANNEL STORED appears at the bottom of the
display.
4. If you take no further action, the screen returns to the
standard marine screen in 3-seconds.
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Uniden MHS450 Radio Owner’s Manual
5. To remove a channel from memory, with the stored
channel displayed, press and hold SCAN/MEM.
6. To scan stored memory channels see page 37.
Using the Weather Channels
The radio receives ten National Oceanic and Atmospheric
Administration weather channels. Although the radio receives
all ten, one channel will be received best due to your
geographic location.
1. Press WX/ALERT to activate the
weather band. The screen displays
Weather Band at the upper left
and the channel number. The
frequency of that channel number appears at the
bottom of the screen. You can find a complete listing
of the weather channels in the Reference pages.
Use ▲ or ▼ to change between WX channels. You
will receive one channel in your area better than all
others.
Note: the radio’s memory retains the channel that appears
when you switch to WX mode in memory
when you turn off the radio.
ꢀ. To switch to the Alert mode, press
and hold down WX/ALERT for
about ꢀ seconds. WEATHER
ALERT MODE ENABLED scrolls along the bottom of
the display.
If the radio receives a weather alert by means of either a
S.A.M.E by decoding the entered FIPS code or if the radio
is in the marine channel mode, detecting
the 1050Hz tone, the radio sounds an
alarm and displays an alert message
at the bottom of the screen, such as
HURRICANE WARNING.
Uniden MHS450 Radio Owner’s Manual
33
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Note: if the event code is longer than 16 characters, the
display label scrolls across the display bottom then changes
to the abbreviated format. Thus, HURRICANE WARNING
(17 spaces) becomes HURRICANE WARN... and remains.
3. To verify if the radio is in the ALERT mode, press
and hold WX/ALERT for about ꢀ seconds. If ALERT
is active, WEATHER ALERT MODE ENABLE scrolls
along the screen bottom. This message appears for
about 3 seconds then returns to the marine standard
screen.
If the radio is set to alert mode and you press and hold WX/
ALERT for about ꢀ seconds, the radio exits alert mode, and
the screen scrolls WEATHER ALERT MODE DISABLED.
For a listing of the full and abbreviated S.A.M.E. codes, see
the chart following the NOAA Channel Chart in the reference
section of this manual.
Adding FIPS Codes
To effectively use the Specific Area
FIPS CODES
Message Encoding feature (S.A.M.E.)
023456
entering the code specific to your
Add
geographic location is required. This
Exit
system is known as FIPS or Federal
Information Processing Standards codes
(FIPS codes). They are a standardized set of numeric codes
issued by the National Institute of Standards and Technology
(NIST) to ensure uniform identification of geographic
entities through all federal government agencies. The
entities covered include: states and statistically equivalent
entities, counties and statistically equivalent entities, named
populated and related location entities (such as, places and
county subdivisions), and American Indian and Alaska Native
areas.
1. Press MENU. From the RADIO MENU screen, use ▲
or ▼ to select the FIPS option. The screen displays
FIPS Codes and lets you select Add or Exit.
Note: You can find your area FIPS codes
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34
Uniden MHS450 Radio Owner’s Manual
ꢀ. Once you locate the code for your county or area,
use ▲ or ▼ until the correct number appears on the
screen then press ENTER to select it.
3. Enter all the codes you wish, then move to EXIT and
ENTER to select it. The radio returns to the RADIO
MENU screen.
4. Press MENU again to return to the marine mode.
Changing Channel Names
Each channel has a default name which
Channel Name
you can change. When a channel is
01A VTS/Com
allocated to a specific service, changing
the name on your radio can help make
identification faster and easier. Or you
03A CG Only
05A VTS/Com
can change the name to a member of your boating family
such as MOMS CHANNEL. You can use up to 16 characters.
1. From the RADIO MENU, press ▲ or ▼ to highlight
Channel Name.
ꢀ. Press ENTER. Use ▲ or ▼ to
scroll to the desired channel you
wish to rename. Press ENTER.
Then choose Rename , Default, or
Exit. and select it.
3. If you choose Rename, press either ▲ or ▼ until the
first letter or number of the new name appears. Press
ENTER to select it and move to the
next character.
Press the UP or DOWN
arrow keys to select
the character then
press the enter key
4. When the name is complete,
repeatedly press ENTER until the
COAST GUARD ONLY
cursor reaches the right end of the
line. Then press ENTER again. A double beep sounds
confirming the change and the display returns to the
Channel Name menu. Use ▲ or ▼ to Exit and press
ENTER.
Uniden MHS450 Radio Owner’s Manual
35
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Restoring Default Names
1. If you want to restore all the factory default names,
use ▲ or ▼ to highlight Default All located between
channel 88A and Exit. Use ▲ or ▼to highlight Yes
then press ENTER to restore all the original names. A
double beep sounds to confirm the action.
ꢀ. To restore only one name to default, highlight the
channel by using ▲ or ▼then press ENTER. Then
use ▲ or ▼ to next highlight Default.
Using the TripleWatch or DualWatch Mode
During setup of your MHS450, you have selected Triple or
DualWatch mode. The following shows you
how to use this valuable feature.
Marine Band
Watts
5
USA Memory
A
1. To activate TripleWatch, from the
main marine screen, press and
hold 16/9/TRI for about ꢀ seconds.
The screen displays TRIWATCH
at the bottom and the radio begins
to check two additional channels in
rapid sequence every ꢀ seconds:
the currently selected marine
TRIWATCH
2 sec
Marine Band
Watts
5
USA
TRIWATCH
Marine Band
5 Watts
USA
channel, the backup calling channel
9, then the Coast Guard/Distress/
Hailing channel 16, before starting
with the current channel again.
TRIWATCH
ꢀ. If you selected DualWatch
during setup, when activated, the radio first checks
the current channel then it checks channel 16
before returning to the current marine channel.
DUALWATCH appears on the display bottom during
this cycle.
3. To exit either mode, press and hold 16/9/TRI for
about ꢀ seconds.
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Uniden MHS450 Radio Owner’s Manual
Note:
• If you enable TripleWatch or DualWatch from a Weather
Channel, the same watch cycle occurs. When the radio
checks the selected weather channel, the screen displays
Weather Band in the upper left corner. When the radio
checks Channel 9, Channel 16, or both, the screen briefly
displays Marine Band at the upper left.
• If you momentarily press SCAN/MEM, the TripleWatch or
DualWatch functions as described above. Channels stored
in memory are also scanned. If you want to change the
channels being scanned, momentarily press SCAN/MEM
again, or press WX or PTT, to exit scanning (TripleWatch
or DualWatch continues). Then use ▲ or ▼ to manually
select another marine channel and store it. Momentarily
press SCAN/MEM to resume scanning.
• In scan mode, the radio pauses on an active channel and
resumes scanning ꢀ seconds after the channel activity
ceases.
Using Scan with Triple Watch,
Dual Watch, or Weather Alert
Triple Watch and Dual Watch Only
To activate normal channel SCAN mode, momentarily
press SCAN/MEM. The radio scans all the channels stored
in memory from lowest to highest. The display shows
CHANNEL SCAN at the bottom.
To initialize TripleWatch scanning, press and hold 16/9/TRI.
Now TRIWATCH appears at the bottom while the scanning
changes to the following sequence: The memory channels
are scanned then the radio checks channel 9 then channel
16 every ꢀ-seconds. If you have set Dual
Marine Band
5 Watts
Watch as your default mode, using the
RADIO MENU, channel 9 is not checked
and DUALWATCH SCAN appears on the
display.
USA
Alert
Memory
A
CHANNEL SCAN
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To disable Triple or Dual Watch and revert to scanning only
stored channels, press and hold 16/9/TRI for ꢀ seconds.
Channel 16 and 9 are no longer checked. The radio
continues to scan only stored memory channels. CHANNEL
SCAN appears on the bottom and each channel number is
displayed in sequence.
Both Watches and Weather Channel
If both the Weather Alert and the TripleWatch features
are enabled when you press SCAN/MEM, the radio starts
checking the memory channels in ascending order. Then
it checks channel 9 and 16 every 2-seconds and finally, it
checks the active weather channel approximately every 7
seconds, looking for the alert tone (1050Hz). The radio then
repeats the cycle. If the radio detects a weather alert tone
during the check cycle, it remains on the weather channel
until you disable the weather mode. See the flow graphic.
Note:
• During SCAN mode, if the radio detects a signal, it stops
scanning and remains on the detected channel for ꢀ
seconds after the activity ends before resumption of
scanning.
• During scanning, you can press SCAN/MEM, 16/9/TRI, or
WX/ALERT to exit the scanning mode and return directly
to the marine channel display mode.
• All channels, except CH70, and the weather channels,
can be stored in memory. When you turn off the radio, all
memory stored channels are retained so that upon turning
the radio on again, they are immediately available.
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38
Uniden MHS450 Radio Owner’s Manual
Using the External Speaker/Mic Jack
You can connect an optional external speaker-mic to this
watertight jack. Unscrew the cap which is held by the rubber
cap-keeper to prevent loss. Insert the special gasketed plug
and screw down the shell which assures prevention of water
entering the jack. Two available units are HHSPM Speaker
Mic and VOX100 Headset Mic. For details, consult your
Uniden dealer or call 1-800-BOATING.
Resetting the MHS450
• It is possible to completely reset the radio and restore all
the factory default settings. Should you choose to do this,
you must be aware that once you clear memory, there is
no undo.
• However, if you desire to clear all your channels stored in
memory, reset all the renamed channels and restore the
scan settings to the factory default (as if you first opened
the new box), carefully follow the steps below.
1. With power off, press and hold
down ▲ and 1/2.5/5W at the same time.
ꢀ. While holding both keys down, turn on power.
3. Release both keys.
4. Press ENTER. Press and hold 16/9/TRI for ꢀ
seconds. MEMORY CLEAR appears.
5. Turn power off then on, to complete the operation.
Uniden MHS450 Radio Owner’s Manual
39
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Troubleshooting
If you missing parts or accesoories, call Parts & Service at 1-800-
554-3988.
In the event that the radio fails to perform, try the following remedies.
If you have still problems, visit our customer support website at:
0409.
CAUSE
REMEDY
SYMPTOM
Low or Discharged
battery pack.
Recharge Lithium Ion battery.
Replace battery.
Use alkaline batteries
temporarily.
Won’t power On.
Bad microphone
element.
Send in for repair.
When the PTT is
pressed - Tx icon
comes on and another
radio can hear a “click”
but no audio is heard.
A source of noise is
nearby.
Turn Squelch clockwise to
reduce noise so that scan
function skips channel.
While scanning, the
radio stops on a
particular channel all of
the time.
An external noise is
being generated by
some device.
Either turn off the offending
device or contact that Mfg.
Regarding FCC part 15
“unintentional radiator”.
There is noise on the
receiver that the
squelch will not
eliminate.
You and the other
user are using
different Country
Modes.
Make sure that you are both
using the same Country
mode (USA, International, or
Canadian). Several channels
have the same numeric
designation, but are either
on different frequencies or
the channels are used for
different purpose. Channel
16, the Distress, Safety, and
Calling channel, is the same
on all three bands.
You have arranged to
communicate with
another VHF radio user
on a specific channel,
and you can not hear
them.
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Uniden MHS450 Radio Owner’s Manual
SYMPTOM
CAUSE
REMEDY
You can not change the You are on a channel Change to an unrestricted
transmit power setting. which is limited to 1
watt transmit power
(e.g. Ch. 13) or you
are on a "receive
TX/RX channel.
only" channel (e.g.
WX).
The SCAN key does
not start the scan
function.
CAUSE 1: No
channels are in the
scan memory.
REMEDY 1: Use the
MEM/SCAN key to enter
desired channels into the
scan memory.
CAUSE 2: Squelch is
not adjusted correctly. REMEDY 2: Adjust the
squelch to the point that
background noise just
disappears.
You can hear
The transmit power is Use the 1/2.5/5W key to
transmissions, but the
other radio cannot hear
you.
set to low.
select a higher transmit
power setting.
Uniden MHS450 Radio Owner’s Manual
41
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Specifications
General
Channels
Transmit
Receive
Weather
54 US/International/Canada
89 US/International/Canada
10
Freq. Control
Freq. Tol.
PLL
Transmit
Receive
1.5 PPM (at 25°C)
1.5 PPM (at 25°C)
-4°F (-20°C) to
Oper. Temp.
+122°F(+50°C)
Flexible Whip
Antenna
Microphone
Display
Speaker
Built-in Electret type
Liquid Crystal Display
8Ω 0.7 Watt
Power Source
Rechargeable Lithium Ion Battery Pack
7.4V 1400 mAh
Size (without antenna)
4.4 (H) x 2.6 (W) x 1.4 (D) inch
111 (H) x 65 (W) x 34 (D) mm
11.9 oz (340g)
Weight (w/battery & antenna)
Transmitter
Frequency Range
Frequency Stability
Power Output
156~158 MHz
10 PPM
1.0 W & 2.5W & 5W (Lithium Ion)
1.0W & 2.5W (Alkaline)
70 dBc (5W)
Spurious Emissions
Current Drain
1400mA (5W)
Receiver
Receiver Type
Double Conversion Super
Heterodyne Phase
Locked Loop system for Local Oscillator
156~164 MHz
0.2µV for 12dB SINAD
Threshold 0.1µV
6 dB 500 to 2000Hz
Frequency Range
Sensitivity
Squelch Sensitivity
Audio
Frequency Response
Adjacent Channel
Selectivity
70 dB @ 25 kHz
Hum & Noise Ratio
Audio Output Power
Current Drain
40 dB
0.4 W @ 10 % THD
Squelched 60mA
Max. Audio 210mA
Specifications shown are typical and subject to change without notice.
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Uniden MHS450 Radio Owner’s Manual
Care and Maintenance
Your MHS450 is a precision of electronic equipment and you
should treat it accordingly. Due to the rugged design, very
little maintenance is required. However, a few precautions
should be observed:
• If the antenna has been damaged, you should not transmit
except in the case of an emergency. A defective antenna
may cause damage to your radio.
• You are responsible for continued FCC technical
compliance of yourradio.
If you missing parts or accesoories, call Parts & Service at
1-800-554-3988.
In the event that the radio fails to perform, try the following
remedies. If you have still problems, visit our customer
care specialists at 1-800-586-0409.
Uniden MHS450 Radio Owner’s Manual
43
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USA Channel Frequencies
TX Freq
Status
Full Name
16 Char Name
VTS/
Ch No. RX Freq
1 ”A”
156.0500
156.0500
Simplex
VESSEL TRAFFIC
SYSTEM/
COMMERCIAL
COMMERCIAL
COAST GUARD,GOVT
ONLY
VESSEL TRAFFIC
SYSTEM/COMMER
CIAL
3 ”A”
5 “A”
156.1500
156.1500
156.2500
156.2500
Simplex
Simplex
COAST GUARD
ONLY
VTS/
COMMERCIAL
6
7 “A”
8
156.3000
156.3000
156.3500
156.3500
156.4000
156.4000
156.4500
156.4500
156.5000
156.5000
156.5500
156.5500
156.6000
156.6000
156.6500
156.6500
156.7000
156.7000
156.7500
Inhibit
156.8000
156.8000
156.8500
156.8500
156.9000
156.9000
156.9500
156.9500
161.6000
157.0000
157.0000
157.0000
157.0500
157.0500
157.1000
157.1000
157.1500
157.1500
161.8000
157.2000
161.8500
157.2500
161.9000
157.3000
161.9500
157.3500
162.0000
157.4000
Simplex
Simplex
Simplex
Simplex
Simplex
Simplex
Simplex
INTER-SHIP SAFETY
SAFETY
COMMERCIAL
COMMERCIAL
NON COMMERCIAL
COMMERCIAL
COMMERCIAL
COMMERCIAL
9
NON
COMMERCIAL
COMMERCIAL
10
11
12
13
14
15
16
17
VESSEL TRAFFIC
SYSTEM
VESSEL TRAFFIC
SYSTEM
VESSEL TRAFFIC
VESSEL TRAFFIC
Simplex,
1W
Simplex
BRIDGE TO BRIDGE
BRIDGE TO
BRIDGE
VESSEL TRAFFIC
VESSEL TRAFFIC
SYSTEM
ENVIRONMENTAL
Receive
Only
Simplex
ENVIRONMENTAL
DISTRESS
DISTRESS, SAFETY,
CALLING
GOVT MARITIME
CONTROL
Simplex,
1W
Simplex
GOVERNMENT
COMMERCIAL
COMMERCIAL
18
“A”
19
“A”
20
COMMERCIAL
Simplex
Duplex
Simplex
Simplex
Simplex
Simplex
Duplex
Duplex
Duplex
Duplex
Duplex
COMMERCIAL
PORT OPERATION
PORT OPERATION
COAST GUARD ONLY
COAST GUARD
PORT
OPERATION
PORT
OPERATION
COAST GUARD
ONLY
20
“A”
21
“A”
22
“A”
23
“A”
24
COAST GUARD
COAST GUARD ONLY
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
COAST GUARD
ONLY
MARINE
OPERATOR
MARINE
OPERATOR
MARINE
OPERATOR
MARINE
OPERATOR
MARINE
25
26
27
28
OPERATOR
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Uniden MHS450 Radio Owner’s Manual
USA Channel Frequencies
28
162.0000
157.4000
Duplex
MARINE OPERATOR
MARINE
OPERATOR
Ch No.
RX Freq. TX Freq.
Status
Full Name
16 Char Name
61
“A”
63
“A”
64
“A”
65
“A”
66
“A”
67
156.0750
156.0750
156.1750
156.1750
156.2250
156.2250
156.2750
156.2750
156.3250
156.3250
156.3750
156.3750
156.4250
156.4250
156.4750
156.4750
156.5250
Inhibit
156.5750
156.5750
156.6250
156.6250
156.6750
156.6750
156.7250
156.7250
156.7750
156.7750
156.8250
156.8250
156.8750
156.8750
156.9250
156.9250
156.9750
156.9750
157.0250
157.0250
157.0750
157.0750
157.1250
157.1250
157.1750
157.1750
161.8250
157.2250
161.8750
157.2750
161.9250
157.3250
161.9750
157.3750
162.0250
157.4250
157.4250
157.4250
Simplex
Simplex
Simplex
Simplex
Simplex
COAST GUARD
COAST GUARD
VESSEL TRAFFIC
COMMERCIAL
VESSEL TRAFFIC
SYSTEM
COMMERCIAL
PORT OPERATION
PORT OPERATION
BRIDGE TO BRIDGE
NON COMMERCIAL
NON COMMERCIAL
PORT
OPERATION
PORT
OPERATION
BRIDGE TO
BRIDGE
NON
COMMERCIAL
Simplex,
1W
Simplex
68
69
70
71
72
73
74
75
76
77
Simplex
NON
COMMERCIAL
DSC RECEIVE
ONLY
NON
COMMERCIAL
NON
COMMERCIAL
PORT
OPERATION
PORT
OPERATION
PORT
OPERATION
PORT
OPERATION
PORT
OPERATION
NON
COMMERCIAL
COMMERCIAL
Receive
Only
Simplex
DIGITAL SELECTIVE
CALLING
NON COMMERCIAL
Simplex
Simplex
Simplex
NON COMMERCIAL
(SHIP-SHIP)
PORT OPERATION
PORT OPERATION
PORT OPERATION
PORT OPERATION
Simplex,
1W
Simplex,
1W
Simplex,
1W
Simplex
PORT OPERATION
(SHIP-SHIP)
NON COMMERCIAL
78
“A”
79
“A”
80
“A”
81
“A”
82
“A”
83
“A”
84
Simplex
Simplex
Simplex
Simplex
Simplex
Duplex
Duplex
Duplex
Duplex
Duplex
Simplex
COMMERCIAL
COMMERCIAL
COMMERCIAL
COAST GUARD
COAST GUARD
GOVERNMENT
COAST GUARD
COAST GUARD
GOVERNMENT
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
MARINE
OPERATOR
MARINE
OPERATOR
MARINE
OPERATOR
MARINE
OPERATOR
MARINE
OPERATOR
85
86
87
88
88
“A”
COMMERCIAL (SHIP-
SHIP)
COMMERCIAL
Uniden MHS450 Radio Owner’s Manual
45
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Canadian Channel Frequencies
Ch No. RX Freq TX Freq
Status
Full Name
16 Char Name
1
160.6500
156.0500
160.7000
156.1000
160.7500
156.1500
156.2000
156.2000
156.2500
156.2500
156.3000
156.3000
156.3500
156.3500
156.4000
156.4000
156.4500
156.4500
156.5000
156.5000
156.5500
156.5500
156.6000
156.6000
156.6500
156.6500
156.7000
156.7000
156.7500
156.7500
156.8000
156.8000
156.8500
156.8500
156.9000
156.9000
156.9500
156.9500
161.6000
157.0000
157.0500
157.0500
157.1000
157.1000
161.7500
157.1500
161.8000
157.2000
161.8500
157.2500
161.9000
157.3000
161.9500
157.3500
162.0000
157.4000
160.6250
156.0250
156.0750
156.0750
156.1250
156.1250
160.8250
156.2250
Duplex
MARINE OPERATOR
MARINE OPERATOR
2
Duplex
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
COAST GUARD
VESSEL TRAFFIC
SAFETY
3
Duplex
4 “A”
5 “A”
6
Simplex
Simplex
Simplex
Simplex
Simplex
Simplex
Simplex
Simplex
Simplex
Simplex, 1W
Simplex
Simplex
Simplex
Simplex, 1W
Simplex
Simplex
Duplex, 1W
Simplex
Simplex
Duplex
CANADIAN COAST
GUARD
VESSEL TRAFFIC
SYSTEM
INTER-SHIP SAFETY
7 “A”
8
COMMERCIAL
COMMERCIAL
COMMERCIAL
COMMERCIAL
9
BOATER CALLING
CHANNEL
COMMERCIAL
CALLING
10
COMMERCIAL
11
VESSEL TRAFFIC
SYSTEM
VESSEL TRAFFIC
SYSTEM
VESSEL TRAFFIC
VESSEL TRAFFIC
BRIDGE TO BRIDGE
VESSEL TRAFFIC
ENVIRONMENTAL
DISTRESS
12
13
BRIDGE TO BRIDGE
14
VESSEL TRAFFIC
SYSTEM
ENVIRONMENTAL
15
16
DISTRESS, SAFETY,
CALLING
STATE CONTROL
17
STATE CONTROL
COMMERCIAL
18 “A”
19 “A”
20
COMMERCIAL
CANADIAN COAST
GUARD
PORT OPERATION
COAST GUARD
PORT OPERATION
COAST GUARD
COAST GUARD
COAST GUARD
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
COAST GUARD
COAST GUARD
MARINE OPERATOR
21 “A”
22 “A”
23
CANADIAN COAST
GUARD
CANADIAN COAST
GUARD
CANADIAN COAST
GUARD
MARINE OPERATOR
24
Duplex
25
Duplex
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
26
Duplex
27
Duplex
28
Duplex
60
Duplex
61 “A”
62 “A”
64
Simplex
Simplex
Duplex
CANADIAN COAST
GUARD
CANADIAN COAST
GUARD
MARINE OPERATOR
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46
Uniden MHS450 Radio Owner’s Manual
Canadian Channel Frequencies
Ch No. RX Freq TX Freq
Status
Full Name
16 Char Name
64 “A”
65 “A”
66 “A”
67
156.2250
156.2250
156.2750
156.2750
156.3250
156.3250
156.3750
156.3750
156.4250
156.4250
156.4750
156.4750
156.5250
Inhibit
156.5750
156.5750
156.6250
156.6250
156.6750
156.6750
156.7250
156.7250
156.775
Simplex
MARINE OPERATOR
MARINE OPERATOR
Simplex
Simplex, 1W
Simplex
Simplex
Simplex
Receive Only
Simplex
Simplex
Simplex
Simplex
Simplex, 1W
Simplex, 1W
Simplex, 1W
Simplex
Simplex
Simplex
Simplex
Simplex
Duplex
SEARCH AND RESCUE
PORT OPERATION
BRIDGE TO BRIDGE
NON COMMERCIAL
NON COMMERCIAL
SEARCH & RESCUE
PORT OPERATION
BRIDGE TO BRIDGE
NON COMMERCIAL
NON COMMERCIAL
DSC RECEIVE ONLY
NON COMMERCIAL
NON COMMERCIAL
PORT OPERATION
PORT OPERATION
PORT OPERATION
PORT OPERATION
PORT OPERATION
INTER SHIP
68
69
70
DIGITAL SELECTIVE
CALLING
NON COMMERCIAL
71
72
NON COMMERCIAL
PORT OPERATION
PORT OPERATION
PORT OPERATION
PORT OPERATION
PORT OPERATION
INTER SHIP
73
74
75
156.775
156.825
156.825
76
77
156.8750
156.8750
156.9250
156.9250
156.9750
156.9750
157.0250
157.0250
157.0750
157.0750
157.1250
157.1250
161.7750
157.1750
157.1750
157.1750
161.8250
157.2250
161.8750
157.2750
161.9250
157.3250
161.9750
157.3750
162.0250
157.4250
78 “A”
79 “A”
80 “A”
81 “A”
82 “A”
83
INTER SHIP
INTER SHIP
INTER SHIP
INTER SHIP
CANADIAN COAST
GUARD
CANADIAN COAST
GUARD
COAST GUARD
COAST GUARD
CANADIAN COST GUARD
COAST GUARD
83 “A”
84
Simplex
Duplex
CANADIAN COAST
GUARD
MARINE OPERATOR
COAST GUARD
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
85
Duplex
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
86
Duplex
87
Duplex
88
Duplex
Uniden MHS450 Radio Owner’s Manual
47
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International Channel Frequencies
Ch No. RX Freq TX Freq
Status
Full Name
16 Char Name
1
160.6500
156.0500
160.7000
156.1000
160.7500
156.1500
160.8000
156.2000
160.8500
156.2500
156.3000
156.3000
160.9500
156.3500
156.4000
156.4000
156.4500
156.4500
156.5000
156.5000
156.5500
156.5500
156.6000
156.6000
156.6500
156.6500
156.7000
156.7000
156.7500
156.7500
156.8000
156.8000
156.8500
156.8500
161.5000
156.9000
161.5500
156.9500
161.6000
157.0000
161.6500
157.0500
161.7000
157.1000
161.7500
157.1500
161.8000
157.2000
161.8500
157.2500
161.9000
157.3000
161.9500
157.3500
162.0000
157.4000
160.6250
156.0250
160.6750
156.0750
160.7250
156.1250
160.7750
156.1750
160.8250
156.2250
Duplex
MARINE OPERATOR
MARINE OPERATOR
2
Duplex
Duplex
Duplex
Duplex
Simplex
Duplex
Simplex
Simplex
Simplex
Simplex
Simplex
Simplex
Simplex
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
INTER-SHIP SAFETY
MARINE OPERATOR
COMMERCIAL (SHIP-SHIP)
BOATER CALLING CHANNEL
COMMERCIAL
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
SAFETY
3
4
5
6
7
MARINE OPERATOR
COMMERCIAL
8
9
CALLING
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
60
61
62
63
64
COMMERCIAL
VESSEL TRAFFIC SYSTEM
VESSEL TRAFFIC SYSTEM
BRIDGE TO BRIDGE
VESSEL TRAFFIC SYSTEM
ENVIRONMENTAL
VESSEL TRAFFIC
VESSEL TRAFFIC
BRIDGE TO BRIDGE
VESSEL TRAFFIC
ENVIRONMENTAL
DISTRESS
Simplex,
1W
Simplex
DISTRESS, SAFETY, CALLING
DOV MATIME CONTROL
PORT OPERATION
Simplex,
1W
Duplex
GOVERNMENT
PORT OPERATION
COMMERCIAL
Duplex
Duplex
Duplex
Duplex
Duplex
Duplex
Duplex
Duplex
Duplex
Duplex
Duplex
Duplex
Duplex
Duplex
Duplex
COMMERCIAL
PORT OPERATION
PORT OPERATION
PORT OPERATION
PORT OPERATION
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
PORT OPERATION
PORT OPERATION
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
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48
Uniden MHS450 Radio Owner’s Manual
International Channel Frequencies
CH No.
65
RX Freq TX Freq
160.8750
156.2750
160.9250
156.3250
156.3750
156.3750
156.4250
156.4250
156.4750
156.4750
156.5250
Inhibit
156.5750
156.5750
156.6250
156.6250
156.6750
156.6750
Status
Duplex
Full Name
MARINE OPERATOR
16 Char Name
MARINE OPERATOR
66
67
68
69
70
71
72
73
74
Duplex
MARINE OPERATOR
BRIDGE TO BRIDGE
NON COMMERCIAL
NON COMMERCIAL
DIGITAL SELECTIVE CALLING
NON COMMERCIAL
NON COMMERCIAL
PORT OPERATION
PORT OPERATION
MARINE OPERATOR
BRIDGE TO BRIDGE
NON COMMERCIAL
NON COMMERCIAL
DSC RECEIVE ONLY
NON COMMERCIAL
NON COMMERCIAL
PORT OPERATION
PORT OPERATION
Simplex
Simplex
Simplex
Receive
Only
Simplex
Simplex
Simplex
Simplex
156.7250
156.7250
156.775
156.775
75
76
77
78
79
80
81
82
83
84
85
PORT OPERATION
PORT OPERATION
PORT OPERATION
PORT OPERATION
Simplex, 1W
156.825
156.825
156.8750
156.8750
161.5750
156.9250
161.5750
156.9750
161.6250
157.0250
161.6750
157.0750
161.7250
157.1250
161.7750
157.1750
161.8250
157.2250
161.8750
157.2750
161.9250
157.3250
161.9750
157.3750
162.0250
157.4250
PORT OPERATION
Simplex, 1W
Simplex
PORT OPERATION (SHIP-SHIP)
Duplex
Duplex
Duplex
Duplex
Duplex
Duplex
Duplex
Duplex
Duplex
Duplex
Duplex
PORT OPERATION
PORT OPERATION
PORT OPERATION
PORT OPERATION
PORT OPERATION
PORT OPERATION
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
PORT OPERATION
PORT OPERATION
PORT OPERATION
PORT OPERATION
PORT OPERATION
PORT OPERATION
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
MARINE OPERATOR
86
87
88
Uniden MHS450 Radio Owner’s Manual
49
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NOAA Weather
Channels and Frequencies
Channel
WX01
RX Frequency
16ꢀ.5500
WX0ꢀ
WX03
WX04
WX05
WX06
WX07
WX08
WX09
WX10
16ꢀ.4000
16ꢀ.4750
16ꢀ.4ꢀ50
16ꢀ.4500
16ꢀ.5000
16ꢀ.5ꢀ50
161.6500
161.7750
163.ꢀ750
NOAA Weather
SAME Event Codes
Standard Code
Received
Event Code
(Scrolling Name)
Display
(16 Character Name)
ADR
ADMINISTRATIVE
MESSAGE
ADMIN MESSAGE
AVA
AVALANCHE WATCH
AVALANCHE WATCH
AVALANCHE WARN
BIOLOGICAL WARN
AVW
BHW
AVALANCHE WARNING
BIOLOGICAL HAZARD
WARNING
BWW
BZW
CAE
BOIL WATER WARNING
BLIZZARD WARNING
BOIL WATER WARN
BLIZZARD WARNING
CHILD EMERGENCY
CHILD ABDUCTION
EMERGENCY
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50
Uniden MHS450 Radio Owner’s Manual
Standard Code
Received
Event Code
(Scrolling Name)
Display
(16 Character Name)
CDW
CEM
CFA
CIVIL DANGER
WARNING
CIVIL DANGER
CIVIL EMERGENCY
MESSAGE
CIVIL EMERGENCY
COASTAL FLOOD
COASTAL FLOOD
CHEMICAL HAZARD
COASTAL FLOOD
WATCH
CFW
CHW
COASTAL FLOOD
WARNING
CHEMICAL HAZARD
WARNING
DBA
DBW
DEW
DAM WATCH
DAM BREAK WATCH
DAM BREAK WARN
CONTAGIOUS WARN
DAM BREAK WARNING
CONTAGIOUS DESEASE
WARNING
DMO
DSW
EAN
PRACTICE/DEMO
SYSTEM DEMO
DUST STORM WARNING
DUST STORM WARN
EMERGENCY NOTIFY
EMERGENCY ACTION
NOTIFICATION
EAT
EQW
EVI
EMERGENCY ACTION
TERMINATION
EMERGENCY END
EARTHQUAKE
WARNING
EARTHQUAKE WARN
IMMED EVACUTATION
IMMEDIATE
EVACUATION
EVA
EVACUATION WATCH
EVACUATION
FCW
FOOD CONTAMINATION
WARNING
FOOD CONTAMIN
FFA
FFS
FLASH FLOOD WATCH
FLASH FLOOD WARN
FLASH FLOOD WARN
FLASH FLOOD
STATEMENT
FFW
FLASH FLOOD
WARNING
FLASH FLOOD WARN
Uniden MHS450 Radio Owner’s Manual
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Standard Code
Received
Event Code
(Scrolling Name)
Display
(16 Character Name)
FLA
FLOOD WATCH
FLOOD WATCH
FLS
FLOOD STATEMENT
FLOOD WARNING
FIRE WARNING
FLOOD STATEMENT
FLOOD WARNING
FIRE WARNING
FLASH FREEZE
FLW
FRW
FSW
FLASH FREEZE
WARNING
FZW
HLS
FREEZE WARNING
FREEZE WARNING
HURRICANE
HURRICANE
STATEMENT
HMW
HAZARDOUS MATERIAL
WARNING
HAZARDOUS WARN
HUW
HWA
HURRICANE WATCH
HIGH WIND WATCH
HIGH WIND WARNING
ICEBERG WARNING
HURRICANE WATCH
HIGH WIND WATCH
HIGH WIND WARN
ICEBERG
HWW
IBW
IFW
INDUSTRIAL FIRE
WARNING
INDUSTRIAL FIRE
LAE
LOCAL AREA
EMERGENCY
LOCAL EMERGENCY
LAW ENFORCE WARN
LEW
LAW ENFORCMENT
WARNING
LSW
NAT
LAND SLIDE WARNING
LAND SLIDE WARN
NATIONAL AUDIBLE
NATIONAL AUDIBLE
TEST
NIC
NATIONAL
NATIONAL INFORM
INFORMATION CENTER
NMN
NETWORK
NETWORK MESSAGE
NOTIFICATION
MESSAGE
NPT
NATIONAL PERIODIC
TEST
NATIONAL PERIODIC
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5ꢀ
Uniden MHS450 Radio Owner’s Manual
Standard Code
Received
Event Code
(Scrolling Name)
Display
(16 Character Name)
NST
NATIONAL SILENT TEST
NATIONAL SILENT
NUW
NUCLEAR POWER
PLANT WARNING
NUCLEAR WARNING
POS
POWER OUTAGE
ADVISORY
POWER OUTAGE ADV
RHW
RMT
RADIOLOGICAL HAZARD RADIOLOGICAL
REQUIRED MONTHLY
TEST
REQ MONTHLY TEST
RWT
SMW
SPS
SPW
SVA
REQUIRED WEEKLY
TEST
REQ WEEKLY TEST
SPECIAL MRN WARN
SPECIAL WEATHER
SHELTER IN-PLACE
THUNDERSTORM
SPECIAL MARINE
WARNING
SPECIAL WEATHER
STATEMENT
SHELTER IN-PLACE
WARNING
SEVERE
THUNDERSTORM
WATCH
SVR
SVS
SEVERE
THUNDERSTORM
WARNING
THUNDERSTORM
SEVERE WEATHER
SEVERE WEATHER
STATEMENT
TOA
TOE
TORNADO WATCH
TORNADO WATCH
911 OUTAGE
911 TELEPHONE
OUTAGE EMERGENCY
TOR
TRA
TORNADO WARNING
TORNADO WARN
TROPIC STORM
TROPICAL STORM
WATCH
TRW
TSA
TROPICAL STORM
WARNING
TROPIC STORM
TSUNAMI WATCH
TSUNAMI WATCH
Uniden MHS450 Radio Owner’s Manual
53
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Standard Code
Received
Event Code
(Scrolling Name)
Display
(16 Character Name)
TSW
VOW
WFW
WFA
WSA
TSUNAMI WARNING
VOLCANO WARNING
WILD FIRE WARNING
WILD FIRE WATCH
TSUNAMI WARNING
VOLCANO WARNING
WILD FIRE WARN
WILD FIRE WATCH
WINTER STORM
WINTER STORM WATCH
WSW
* * A
* * E
* * S
* * W
TXB
TXF
TXO
TXP
WINTER STORM
WARNING
WINTER STORM
UNRECOGNIZED
WATCH
UNRECOGNIZED
UNRECOGNIZED
UNRECOGNIZED
UNRECOGNIZED
No event code shown
UNRECOGNIZED
EMERGENCY
UNRECOGNIZED
STATEMENT
UNRECOGNIZED
WARNING
TRANSMITTER BACKUP
ON
TRANSMITTER CARRIER No event code shown
ON
TRANSMITTER CARRIER No event code shown
OFF
TRANSMITTER PRIMARY No event code shown
ON
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54
Uniden MHS450 Radio Owner’s Manual
Three Year Limited Warranty
WARRANTOR: UNIDEN AMERICA CORPORATION (“Uniden”)
ELEMENTS OF WARRANTY: Uniden warrants, for three years, to the original
retail owner, this Uniden Product to be free from defects in materials and
craftsmanship with only the limitations or exclusions set out below.
WARRANTY DURATION: This warranty to the original user shall terminate
and be of no further effect 36 months after the date of original retail sale.
The warranty is invalid if the Product is (A) damaged or not maintained
as reasonable or necessary, (B) modified, altered, or used as part of any
conversion kits, subassemblies, or any configurations not sold by Uniden,
(C) improperly installed, (D) serviced or repaired by someone other than an
authorized Uniden service center for a defect or malfunction covered by this
warranty, (E) used in any conjunction with equipment or parts or as part of
any system not manufactured by Uniden, or (F) installed or programmed by
anyone other than as detailed by the Operating Guide for this product.
STATEMENT OF REMEDY: In the event that the product does not conform to
this warranty at any time while this warranty is in effect, warrantor will either,
at its option, repair or replace the defective unit and return it to you without
charge for parts, service, or any other cost (except shipping and handling)
incurred by warrantor or its representatives in connection with the per-
formance of this warranty. Warrantor, at its option, may replace the unit with
a new or refur-bished unit. THE LIMITED WARRANTY SET FORTH ABOVE
IS THE SOLE AND ENTIRE WARRANTY PERTAINING TO THE PRODUCT
AND IS IN LIEU OF AND EXCLUDES ALL OTHER WARRANTIES OF ANY
NATURE WHATSOEVER, WHETHER EXPRESS, IMPLIED OR ARISING BY
OPERATION OF LAW, INCLUDING, BUT NOT LIMITED TO ANY IMPLIED
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE. THIS WARRANTY DOES NOT COVER OR PROVIDE FOR THE
REIMBURSEMENT OR PAYMENT OF INCIDENTAL OR CONSEQUENTIAL
DAMAGES. Some states do not allow this exclusion or limitation of incidental
or consequential damages so the above limitation or exclusion may not apply
to you.
LEGAL REMEDIES: This warranty gives you specific legal rights, and you
may also have other rights which vary from state to state. This warranty is void
outside the United States of America.
PROCEDURE FOR OBTAINING PERFORMANCE OF WARRANTY: If,
after following the instructions in this Operating Guide you are certain that
the Product is defective, pack the Product carefully (preferably in its original
packaging). Include evidence of original purchase and a note describing the
defect that has caused you to return it. The Product should be shipped freight
prepaid, by traceable means, or delivered, to warrantor at:
Uniden America Corporation
Parts and Service Division
4700 Amon Carter Boulevard
Fort Worth, TX 76155
(800) 554-3988, 7:00 a.m. to 7:00 p.m., Central,
Monday through Friday
Uniden MHS450 Radio Owner’s Manual
55
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VISIT
WWW.UNIDEN.COM
TO REGISTER YOUR
PRODUCT
© 2005 Uniden America Corporation, Fort Worth, Texas. Contains additional foreign articles. Printed in China.
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