Uniden America UT625 Handy Marine Radio User Manual
Uniden America Corporation Handy Marine Radio Users Manual
Users Manual
OWNER’S MANUAL
GUIDE D’UTILISATION
MHS75
VHF MARINE RADIO RADIO VHF MARITIME
Making a Distress Call
Speak slowly -- clearly -- calmly.
Make sure your radio is on. 1.
Press the 2. 16/9-Tri button to switch to Channel 16 (156.800
MHz). (If the corner of the display does not show 16, press
the 16/9-Tri button again until it does.)
Press the 3. Push to talk button and say,
“MAYDAY --MAYDAY-- MAYDAY.”
Say, 4. “THIS IS {name or call sign of your boat}.”
Say, 5. “MAYDAY{name or call sign of your boat}.”
Tell where you are (what navigational aids or land-marks 6. are near, or give your position from a GPS).
State the nature of your distress (e.g. sinking, medical 7.
HPHUJHQF\PDQRYHUERDUG¿UHDGULIWHWF
Give the number of persons aboard and describe the 8. condition of any injured persons.
Estimate present seaworthiness of your ship (e.g. how 9.
LPPHGLDWHLVWKHGDQJHUGXHWRÀRRGLQJRU¿UHRUSUR[LPLW\
to shore).
%ULHÀ\GHVFULEH\RXUVKLSOHQJWKW\SHFRORUKXOO10.
Say, 11. “I WILL BE LISTENING ON CHANNEL 16.”
End message by saying, 12. “THIS IS {name or call sign of your boat} OVER.”
Release the 13. Push to talk button and listen for a response.
If you do not get an answer after 30 seconds, repeat
your call, beginning at step 3, above.
For future reference, write your boat’s name & call sign here:
Uniden MHS75 Radio Owner’s Manual
Table of Contents
Introduction................................E-1
Features......................................E-1
Getting Started...........................E-2
What’s included...........................E-2
Parts of the MHS75.....................E-3
Front view...................................E-3
Back view...................................E-3
DC Charger................................E-4
Reading the display.....................E-5
Display icons and what they
mean......................................E-5
How It Works..............................E-6
Normal mode operation...............E-7
Normal mode with Weather Alert
Watch.....................................E-7
Normal mode with Triple Watch or
Dual Watch.............................E-8
Normal mode with Quad Watch.E-8
Scan mode operation..................E-9
Using the radio in scan mode ....E-9
Scan mode with Weather Alert
Watch...................................E-10
Scan mode with Triple Watch or
Dual Watch...........................E-10
Both Weather Alert and Triple/Dual
Watch in scan mode.............E-10
Weather mode............................E-11
Using the radio in weather
mode.....................................E-11
Weather mode with Weather Alert
Watch....................................E-11
Weather mode with Triple Watch
or Dual Watch......................E-12
Setting Up the Hardware.........E-12
Attaching the antenna................E-12
Installing the battery..................E-12
Charging the battery..................E-13
Connecting the charger............E-13
Important notes on charging the
battery..................................E-13
Disconnecting the charger.......E-14
Attaching the belt clip................E-14
Using Your Radio.....................E-15
Changing the volume ................E-15
Setting the squelch level............E-15
Changing the channel................E-15
Making a transmission...............E-16
Boosting the transmission
power...................................E-16
Setting the UIC channel mode...E-17
Maintenance and
Troubleshooting....................E-17
Common questions....................E-17
6SHFLÀFDWLRQV ..........................E-18
Channels and Frequencies........E-19
US channel frequencies and
names..................................E-19
Canadian channel frequencies and
names..................................E-21
International channel frequencies
and names...........................E-23
Weather channel frequencies and
names..................................E-25
Regulations and Safety
Warnings................................E-26
Maritime radio services
operation.................................E-26
Basic radio guidelines................E-26
FCC/Industry Canada
information..............................E-27
FCC RF exposure information...E-27
Lithium ion battery warning........E-28
Three Year Limited Warranty
Statement..............................E-29
Making a Distress
Call................(inside front cover)
E-1
Uniden MHS75 Radio Owner’s Manual
Introduction
Features
The MHS75 provides the following key features:
Submersible design
Complies with JIS8/IPX8 water-resistant standards, which
means the radio can be submerged in 1.5 meters of water
for 30 minutes without damage.
Memory scan mode
Lets you save channels to memory and monitor them in
quick succession.
Transmitter power level select
Lets you boost the transmitter power from 1 Watt to 2.5 or
5 Watts for added transmission distance.
Battery level display and low battery alert .
Dual, Triple and Quad Watch operation
These different watch modes let you monitor up to two
Coast Guard Distress/Hailing channels and one weather
channel along with one regular marine channel.
All marine VHF channels for the U.S., Canada, and international waters
National Oceanic and Atmospheric Administration (NOAA) weather channel watch
Sounds a warning tone when a hazard alert is issued.
E-2 Uniden MHS75 Radio Owner’s Manual
Getting Started
What’s included
MHS75 Radio Antenna
DC Charger Lithium Ion Battery
Belt Clip Wrist Strap
If any pieces are missing or damaged, contact Uniden
Customer Service (see back cover for contact information).
For information on available accessories, visit
www.uniden.com.
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Uniden MHS75 Radio Owner’s Manual
Parts of the MHS75
Front view
Back view
Antenna
LCD display
1/5W-2.5W
button
Channel up
button
Volume-power
knob
(Turn clockwise
to increase
volume.)
Microphone
16/9-Tri
(16/9- triple
watch) button
WX-Alert
(weather-alert)
button
Scan-Dual
(scan-dual
watch) button
Squelch knob
(Turn clockwise to
decrease channel
noise.)
Push to talk
button
Speaker
Wrist strap
anchor
Channel down
button
UIC-Lock button
Mem (memory)
button
Belt clip
Battery
Battery charging
contacts
Battery
latch
E-4 Uniden MHS75 Radio Owner’s Manual
Knob Turn clockwise to...: Turn counter-clockwise to...:
Volume-
Power Turn on the radio or
increase the volume. Decrease the volume or turn off
the radio.
Squelch Raise the squelch level
to reduce channel noise. Lower the squelch level to hear
weaker signals.
Button Press to... Press and hold to...
Push to talk NA Transmit on a channel
16/9-Tri
1st press: Go to channel 16.
2nd press: Go to channel 9.
3rd press: Go back to the
starting channel.
Turn Triple Watch on and
off.
Mem Save a channel into memory
or delete a channel from
memory. NA
UIC-Lock Switch from US to Canadian
or international channels. Lock the keys; press and
hold again to unlock.
Channel Up Move up one channel at a
time. Move quickly up the
channels.
Channel
Down Move down one channel at
a time. Move quickly down the
channels.
WX-Alert Listen to the weather
channels. Turn Weather Alert Watch
on and off.
Scan-Dual Start scanning the channels
saved in memory. Turn Dual Watch on and
off.
1/5W-2.5W Switch the transmit power
between 1 Watt and 5 Watts. Change the transmit power
to 2.5 Watts.
DC Charger Battery charging contacts
Release tabs
12 V DC (”cigarette
lighter”) plug
Power LED
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Uniden MHS75 Radio Owner’s Manual
Reading the display
The LCD display
shows different
information
depending on
what you are
doing. This
sample screen
shows some of
this information.
The table below
shows all the
possible icons
and what they
mean.
Display icons and what they mean
Icon What it means
You are currently transmitting.
,, or The transmitter power is set to 1 Watt, 5 Watts, or
2.5 Watts.
The keys are locked.
, , or The radio is set to use US channels, CANadian
channels, or INTernational channels.
or TRIple Watch or DUAL Watch is turned on.
The current channel is saved in memory.
The radio is in Scan mode.
The radio is in Weather Mode
Weather Alert Watch is turned on.
The battery is fully charged, mostly charged, half
charged, mostly empty, or completely empty.
88
Transmit
power level
(1, 2.5, or 5
Watts) This channel
is stored in
memory.
Triple
Watch is
on
The radio
is in scan
mode
Key lock
is on
The radio is
transmitting Current
channel
number
UIC channel mode
(USA, CANada, or
INTernational)
Weather
Alert Watch
is on.
Battery
status icon
E-6 Uniden MHS75 Radio Owner’s Manual
How It Works
The MHS75 radio has three main operation modes: normal
mode, scan mode, and weather mode.
Mode What it does Use it when you
want to...: To turn it
on/off
Normal
mode Monitors a single marine
channel and lets you talk
on that channel. Monitor a channel or
talk to another radio. (default
mode)
Scan
mode Monitors all the channels
you save into memory. Check a small group
of regularly-used
FKDQQHOVIRUWUDI¿F
Press Scan-
Dual.
Weather
mode Monitor the selected
NOAA weather channel. You want to hear the
current or forecasted
weather. Press WX-
Alert.
In addition to the three operation modes, the MHS75
provides four different watch modes which you can activate
during any operation mode. In the watch modes, the radio
EULHÀ\FKHFNVIRUDFWLYLW\RQDVSHFL¿FFKDQQHOWKHQUHWXUQV
to its previous operation.
Watch mode What it does To turn it on/off
Weather Alert
Watch Checks the last-used weather
channel for hazard alerts
every 7 seconds. Press and hold WX-Alert
for 2 seconds.
Dual Watch Checks channel 16 for activity
every 2 seconds. Press and hold Scan-
Dual for 2 seconds.
Triple Watch Checks channels 16 and 9 for
activity every 2 seconds. Press and hold 16/9-Tri
for 2 seconds.
Quad Watch Checks channels 16 and 9 for
activity every 2 seconds, and
checks the last-used weather
channel every 7 seconds.
Turn on Triple Watch,
then turn on Weather
Alert Watch.
Note: Private boats must monitor channel 16 when-
ever they are underway. Water-going vessels should
have either Triple Watch or Dual Watch on at all times.
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Uniden MHS75 Radio Owner’s Manual
Normal mode operation
To transmit, remove the radio from the charger, then press and hold the Push to Talk button. Release the button
ZKHQ\RXDUH¿QLVKHGWDONLQJ
For the best sound quality, hold the microphone about two inches from your mouth while you’re talking.
Press the Channel Up button to move up one channel at
a time. Press and hold the button to scroll quickly up the
channels.
Press the Channel Down button to move down one
channel at a time. Press and hold the button to scroll
quickly down the channels.
To change the transmit power, press the 1/5W-2.5W
button. The transmit power switches between 1 Watt and 5
Watts each time you press the 1/5W-2.5W button.
To change the transmit power to 2.5 Watts, press and hold the 1/5W-2.5W button for 2 seconds. Press and hold
the button again to change back to the previous transmit
power (either 1 Watt or 5 Watts).
Normal mode with Weather Alert Watch
If you activate Weather Alert Watch while operating in normal
mode, the radio
checks the most
recently used
weather channel
every seven seconds.
If it detects a weather
or other hazard alert,
it will switch to that
weather channel. (If
you are actively
transmitting, the radio
ZDLWVXQWLO\RX¿QLVK
your transmission before checking the weather channel.)
wx
Every 7 seconds,
the radio checks
the last-used
weather channel.
WX Alert
Watch on
Monitoring Channel 25
E-8 Uniden MHS75 Radio Owner’s Manual
Normal mode with Triple Watch or Dual Watch
If you activate Triple Watch while operating in normal mode,
the radio checks channels 16 and 9 every two seconds; with
Dual Watch turned on, the radio only checks channel 16. The
radio will not check channels 16 or 9 while you are actively
WUDQVPLWWLQJLWZDLWVXQWLO\RXUWUDQVPLVVLRQLV¿QLVKHGDQG
then checks the channels.
Normal mode with Quad Watch
You can activate Weather Alert Watch and Triple Watch at
the same time to monitor four channels at once (Quad
Watch). The radio performs the Triple Watch and Weather
Alert Watch checks at their scheduled time:
09 16 09 16 09 16
Every 2 seconds, the radio
checks channels 9 & 16.
Triple Watch on
Monitoring Channel 25
wx
Every 7 seconds,
the radio checks
the last-used
weather channel.
WX Alert
Watch on
09 16 09 16 09 16
Every 2 seconds, the radio
checks channels 9 & 16.
Triple Watch on
Monitoring Channel 25
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Uniden MHS75 Radio Owner’s Manual
Scan mode operation
You can save channels into memory and then use scan
mode to monitor those channels from lowest to highest. If the
radio detects a signal on a channel, it stays on that channel
as long as the signal is received; when the signal stops, the
radio continues scanning.
Using the radio in scan mode
To activate scan mode, press Scan-Dual.
You must have at least two channels in memory to start a
scan.
You cannot transmit while in scan mode.
To save a channel into memory, select the channel, then
press the Mem button. The Mem icon shows on the display
whenever you tune to that channel.
To remove a channel from memory, set the radio to that
channel, then press the Mem button. The Mem icon no
longer shows on the display.
When the radio stays on a channel, press Channel Up to
leave that channel and resume scanning.
To end the scan, press the Scan-Dual button again; the
radio remains on the last scanned channel.
11
1008 1312 14 17
15
The radio scans about
5 channels in 0.5 seconds.
When it detects a signal, the radio stays
on the channel until you press the
Channel Up button or the signal stops. Resume
scan
E-10 Uniden MHS75 Radio Owner’s Manual
Scan mode with Weather Alert Watch
If you activate Weather Alert Watch while in scan mode, the
radio checks the most recently-used weather channel every
seven seconds, then continues scanning the next channel in
memory:
Scan mode with Triple Watch or Dual Watch
If you activate Triple Watch while operating in scan mode,
the radio checks channels 16 and 9 every two seconds, then
goes on to scan the next channel; with Dual Watch turned
on, the radio only checks channel 16:
Both Weather Alert and Triple/Dual Watch in scan mode
You can activate Weather Alert Watch and Triple/Dual Watch
at the same time. The radio performs both checks at their
scheduled time:
Every 7 seconds, the radio
checks the last-used
weather channel, then
scans the next channel. wx
WX Alert
Watch on
Memory Channel Scan
08 252417151413121110 20
09 16
Every 2 seconds, the
radio checks channels
9 & 16, then scans
the next channel.
Triple
Watch on
Memory Channel Scan
08 252417151413121110 20
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Uniden MHS75 Radio Owner’s Manual
Weather mode
The NOAA weather channels now cooperate with the FCC to
alert you of other hazards besides weather (child abduction
alerts, nuclear, biological, etc.). In weather mode, the radio
monitors one of the ten NOAA weather channels. If any type
of alert is received, the radio sounds an alert tone and the
display blinks.
Using the radio in weather mode
You cannot transmit while in weather mode.
To enter weather mode, press the WX-Alert button.
To turn off the radio’s alert tone, press any button.
To cancel weather mode and return to the previous marine
channel, press the WX-Alert button again.
Weather mode with Weather Alert Watch
Because weather mode already monitors the weather
channels, you don’t need Weather Alert Watch to check
the weather channel every seven seconds. If you activate
Weather Alert Watch while operating in weather mode,
it operates as a type of “sleep mode”: the radio stays on
the weather channel and mutes the speaker. If an alert
is detected, the radio sounds an alert tone and turns the
speaker back on. This mode is very useful when you are
anchoring for the night but want to keep informed of hazards.
09 16
Every 2 seconds, the
radio checks channels
9 & 16, then scans
the next channel.
Triple
Watch on
Every 7 seconds, the radio
checks the last-used
weather channel, then
scans the next channel. wx
WX Alert
Watch on
Memory Channel Scan
08 252417151413121110 20
E-12 Uniden MHS75 Radio Owner’s Manual
Weather mode with Triple Watch or Dual Watch
If you activate Triple
Watch while operating
in weather mode, the
radio checks channels
16 and 9 every two
seconds; with Dual
Watch turned on, the
radio only checks
channel 16.
Setting Up the Hardware
Attaching the antenna
The antenna detaches from the radio for easy
shipping or storage. To attach the antenna to
your radio, screw it tightly onto the anchor
post at the top of the radio.
Installing the battery
Your MHS75 comes with a rechargeable Lithium Ion battery;
for shipping safety, the battery is not installed at the factory.
1. Insert the hook on
the battery into
the notch at the
top of the
battery
compartment.
Note: Each
time you
remove the battery, check the rubber seal around the
battery compartment. Make sure the seal is seated in the
groove and there is no dirt or debris on it. If the seal
looks worn or damaged, contact customer service to
order a replacement (see back cover page for contact
information).
09 16 09 16 09 16
Every 2 seconds, the radio checks
channel 9, then channel 16
with Triple Watch on
Monitoring Weather Channel WX08
Rubber
seal
E-13
Uniden MHS75 Radio Owner’s Manual
2. Lower the battery until it rests
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Bring the battery latch up and 3. snap it into place.
Charging the battery
Connecting the charger
Align the charger with the
battery (on the rear side
of the radio). Slide the
radio into the charger
until it clicks into place.
Connect the other end
of the charger to any standard 12 volt DC “cigarette lighter”
style outlet. The power LED on the top of the plug should
turn orange and remain lit.
CAUTION: If the LED blinks, immediately disconnect
the charger from the DC outlet. Reseat the radio in the
charger before reconnecting the charger to power.
CAUTION: Use only the battery and charger supplied
with this radio. Using a different charger or battery can
GDPDJHWKHUDGLRDQGFUHDWHDULVNRI¿UHRUVKRFN
Important notes on charging the battery
Charge the battery fully before using the radio.
When the battery is completely charged, the power LED turns green.
Don’t use the charger when the ambient temperature is below 0º C (32º F) and 45º C (113º F).
If the radio is powered down, the battery can charge in about three and a half hours. (If the radio is powered on,
the battery takes longer to charge.)
If the battery is empty, the radio can’t transmit, even if it’s in the charger.
E-14 Uniden MHS75 Radio Owner’s Manual
Be careful moving the charger cord. If you have to move
WKHFRUGZKLOHWKHUDGLRLVFKDUJLQJSLFNXSWKHUDGLR¿UVW
so you don’t drop it.
Disconnecting the charger
Squeeze in on the release tabs
at the base of the charger, and
slide the radio out.
Attaching the belt clip
To attach the belt clip:
Rotate the belt clip so that the 1.
¿QJHULQGHQWDWLRQLVWRZDUGVWKH
top of the radio.
Align the center of the clip with 2. the anchor post.
Place the clip on the post 3. and slide the clip upwards
until it clicks into place.
To remove the belt clip:
Rotate the clip so that 1.
WKH¿QJHULQGHQWDWLRQLV
towards the bottom of the radio.
Slide the clip up until it comes free of the anchor post.2.
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Uniden MHS75 Radio Owner’s Manual
Using Your Radio
Changing the volume
To increase the speaker volume, turn the Volume-Power
knob clockwise; turn it counter-clockwise to decrease the
volume.
Setting the squelch level
The squelch feature
reduces static on the
VSHDNHUE\¿OWHULQJ
out any background
channel noise. At the
lowest squelch level,
the speaker plays all
signals, including any
channel noise.
Setting the squelch
OHYHOKLJKHU¿OWHUVRXW
noise and lets only
actual radio
transmissions through.
While listening to a channel, adjust the SQUELCH knob until
WKHQRLVHLV¿OWHUHGDQG\RXFDQKHDURQO\WKHWUDQVPLVVLRQ
If you switch to a channel with a lot of noise or a weak trans-
mission, you may need to readjust the squelch level again.
Note: Setting the squelch level too high may prevent
you from hearing weaker transmissions. If you are
KDYLQJGLI¿FXOW\KHDULQJDWUDQVPLVVLRQWU\VHWWLQJWKH
squelch level lower.
Changing the channel
Press the Channel Up and Channel DownEXWWRQVEULHÀ\WR
scroll through the channels one channel at a time. Press and
hold the Channel Up or Channel Down button to quickly
scroll through the channels.
Weak signals
No
Squelch Medium
Squelch High
Squelch
Strong signals
Noise
E-16 Uniden MHS75 Radio Owner’s Manual
Making a transmission
Select the channel you want to transmit on, then press and
hold the Push to Talk button. Release the Push to Talk
EXWWRQZKHQ\RX¶UH¿QLVKHGWDONLQJWROHWWKHRWKHUSDUW\
respond.
To prevent stuck microphone problems or situations where the Push to Talk button is pushed accidentally, the radio
limits your talk time to 5 minutes in a single transmission.
For the best sound quality, hold the microphone about two inches away from your mouth.
See the channel lists starting on page 19 for a list of
receive-only channels.
Boosting the transmission power
In most situations, the 1 Watt transmission power is all you
QHHG,I\RX¿QG\RXUVHOIIDUDZD\IURPRWKHUVWDWLRQVDQG
have trouble getting a response, you may need to boost the
transmission power from 1 Watt to 2.5 Watts or 5 Watts:
Press the 1/5W-2.5W button to switch from 1 Watt to 5
Watts. Press the button again to switch back to 1 Watt.
To switch to 2.5 Watts, press and hold the 1/5W-2.5W
button for about two seconds. Press and hold the button
again to switch back to 1 Watt or 5 Watts (whichever you
were on when you switched to 2.5 Watts).
The transmit power remains at the new setting until you change it again. The transmit power icon always shows the
current transmission power.
Note: Don’t forget to change the transmission setting
back to 1 Watt when you move close to other stations.
Some channels (for example, channels 13 and 67) limit the transmission power to 1 Watt. When you tune to a
limited-power channel, the radio automatically switches to
1 Watt. See the channel lists starting on page 19 for a list
of power-restricted channels.
E-17
Uniden MHS75 Radio Owner’s Manual
Setting the UIC channel mode
The radio comes preset to use the channels assigned for
the US. If your current area uses Canadian or international
channel assignments, press the UIC-Lock key to rotate
through the US, Canadian, and international channels.
Maintenance and Troubleshooting
Due to its rugged design, the MHS75 requires very little
maintenance. However, it is a precision electronic instrument,
so you should follow a few precautions:
If the antenna has been damaged, do not transmit except
in an emergency situation. Transmitting with a defective
antenna may cause further radio damage.
You are responsible for continued FCC technical
compliance of your radio.
You should arrange for periodic performance checks with
your Uniden dealer.
Common questions
Problem Things to Try
The radio won’t turn on. Charge the battery.
The power LED on the
charger doesn’t turn on.
Replace the fuse inside the charger. (Contact – customer service for a replacement fuse and
instructions on changing it.
Replace the battery.–
The radio won’t
transmit.
Make sure you are not in weather or scan – mode.
Make sure you are not trying to transmit on a – receive-only channel or transmit at the wrong
power level for this channel (see the channel
lists starting on page 19).
Check the battery power level; if it’s low, – charge the battery before trying to transmit.
Make sure the duration of each transmission – is less than 5 minutes.
E-18 Uniden MHS75 Radio Owner’s Manual
Problem Things to Try
I can’t hear anything
from the speaker. Adjust the squelch level; it is probably too high.
Noise comes out of the
speaker all the time Adjust the squelch level; it is probably too low.
I can transmit, but no
one can hear me. Check your UIC channel settings: does the area
you are in use different channel assignments?
I’m not getting hazard
alerts. Make sure Weather Alert Watch is turned on.
7KHGLVSOD\ÀDVKHV
and I don’t know why.
7KHFKDQQHOQXPEHURQWKHGLVSOD\ZLOOÀDVKLI
the radio is in a watch mode or in scan mode.
Try turning off scanning, Weather Alert Watch,
Triple Watch, or Dual Watch (see page 6).
:KHUHFDQ,¿QGP\
radio’s serial number? The serial number is on a plate inside the
battery compartment.
6SHFL¿FDWLRQV
General
Channels All US/International/Canada marine
channels
10 Weather channels
Freq. Control PLL
Freq. Tol. Transmit: 1.5 PPM (at 25°C)
Receive: 1.5 PPM (at 25°C)
Oper. Temp. -4°F (-20°C) to +122°F(+50°C)
Antenna Flexible Whip
Microphone Built-in Electret type
Display Liquid Crystal Display
Speaker :DWW
Power Source Rechargeable Lithium Ion Battery
7.4V 1040 mAh
Size (without antenna) 4.57 (H) x 2.49 (W) x 1.53 (D) inch
116.2 (H) x 63.3 (W) x 39 (D) mm
Weight 10.2 oz (290g) (w/battery and antenna)
E-19
Uniden MHS75 Radio Owner’s Manual
Transmitter
Frequency Range 156~158 MHz
Frequency Stability ±10 PPM
Power Output 1.0 W & 2.5W & 5W
Spurious Emissions 70 dBc
Current Drain 1400 mA (5W)
Receiver
Type Double Conversion Super Heterodyne
Phase Locked Loop system for Local
Oscillator
Frequency Range 156~164 MHz
Sensitivity ȝ9IRUG%6,1$'
Squelch Sensitivity 7KUHVKROGȝ9
Audio Frequency Response +5 dB @ 500 Hz; -6 dB @ 2000Hz
Adjacent Channel Selectivity75 dB @ ±25 kHz
Audio Output Power 0.4 W @10% THD
Current Drain Squelched: 55 mA; Max. Audio: 210 mA
Channels and Frequencies
US channel frequencies and names
US Marine Channels
Ch RX Freq TX Freq Status Name
1A 156.050 156.050 Simplex 9HVVHOWUDI¿FV\VWHPFRPPHUFLDO
5A 156.250 156.250 Simplex 9HVVHOWUDI¿FV\VWHPFRPPHUFLDO
6 156.300 156.300 Simplex Inter-ship safety
7A 156.350 156.350 Simplex Commercial
8 156.400 156.400 Simplex Commercial
9 156.450 156.450 Simplex Non commercial
10 156.500 156.500 Simplex Commercial
11 156.550 156.550 Simplex 9HVVHOWUDI¿FV\VWHP
12 156.600 156.600 Simplex 9HVVHOWUDI¿FV\VWHP
13 156.650 156.650 Simplex, 1W Bridge to bridge
E-20 Uniden MHS75 Radio Owner’s Manual
US Marine Channels
Ch RX Freq TX Freq Status Name
14 156.700 156.700 Simplex 9HVVHOWUDI¿FV\VWHP
15 156.750 Inhibit Receive only Environmental
16 156.800 156.800 Simplex Distress, safety, and calling
17 156.850 156.850 Simplex, 1W Govt maritime control
18A 156.900 156.900 Simplex Commercial
19A 156.950 156.950 Simplex Commercial
20 161.600 157.000 Duplex Port operation
20A 157.000 157.000 Simplex Port operation
21A 157.050 157.050 Simplex Coast guard only
22A 157.100 157.100 Simplex Coast guard
23A 157.150 157.150 Simplex Coast guard only
24 161.800 157.200 Duplex Marine operator
25 161.850 157.250 Duplex Marine operator
26 161.900 157.300 Duplex Marine operator
27 161.950 157.350 Duplex Marine operator
28 162.000 157.400 Duplex Marine operator
63A 156.175 156.175 Simplex 9HVVHOWUDI¿FV\VWHP
65A 156.275 156.275 Simplex Port operation
66A 156.325 156.325 Simplex Port operation
67 156.375 156.375 Simplex, 1W Bridge To Bridge
68 156.425 156.425 Simplex Non Commercial
69 156.475 156.475 Simplex Non Commercial
70 156.525 Inhibit Receive only Digital Selective Calling
71 156.575 156.575 Simplex Non Commercial
72 156.625 156.625 Simplex Non Commercial (Ship-Ship)
73 156.675 156.675 Simplex Port Operation
74 156.725 156.725 Simplex Port Operation
75 156.775 156.775 Simplex, 1W Port Operation
76 156.825 156.825 Simplex, 1W Port Operation
77 156.875 156.875 Simplex, 1W Port Operation (Ship-Ship)
78A 156.925 156.925 Simplex Non Commercial
E-21
Uniden MHS75 Radio Owner’s Manual
US Marine Channels
Ch RX Freq TX Freq Status Name
79A 156.975 156.975 Simplex Commercial
80A 157.025 157.025 Simplex Commercial
81A 157.075 157.075 Simplex Coast Guard
82A 157.125 157.125 Simplex Coast Guard
83A 157.175 157.175 Simplex Government
84 161.825 157.225 Duplex Marine Operator
85 161.875 157.275 Duplex Marine Operator
86 161.925 157.325 Duplex Marine Operator
87A 157.375 157.375 Simplex Marine Operator
88A 157.425 157.425 Simplex Commercial (Ship-Ship)
Canadian channel frequencies and names
Canadian Marine Channels
Ch RX Freq TX Freq Status Name
1 160.650 156.050 Duplex Marine Operator
2 160.700 156.100 Duplex Marine Operator
3 160.750 156.150 Duplex Marine Operator
4A 156.200 156.200 Simplex Canadian Coast Guard
5A 156.250 156.250 Simplex 9HVVHO7UDI¿F6\VWHP
6 156.300 156.300 Simplex Inter-Ship Safety
7A 156.350 156.350 Simplex Commercial
8 156.400 156.400 Simplex Commercial
9 156.450 156.450 Simplex Boater Calling Channel
10 156.500 156.500 Simplex Commercial
11 156.550 156.550 Simplex 9HVVHO7UDI¿F6\VWHP
12 156.600 156.600 Simplex 9HVVHO7UDI¿F6\VWHP
13 156.650 156.650 Simplex, 1W Bridge To Bridge
14 156.700 156.700 Simplex 9HVVHO7UDI¿F6\VWHP
15 156.750 156.750 Simplex, 1W Environmental
16 156.800 156.800 Simplex Distress, safety, calling
17 156.850 156.850 Simplex, 1W State Control
E-22 Uniden MHS75 Radio Owner’s Manual
Canadian Marine Channels
Ch RX Freq TX Freq Status Name
18A 156.900 156.900 Simplex Commercial
19A 156.950 156.950 Simplex Canadian Coast Guard
20 161.600 157.000 Duplex, 1W Port Operation
21A 157.050 157.050 Simplex Canadian Coast Guard
22A 157.100 157.100 Simplex Canadian Coast Guard
23 161.750 157.150 Duplex Canadian Coast Guard
24 161.800 157.200 Duplex Marine Operator
25 161.850 157.250 Duplex Marine Operator
26 161.900 157.300 Duplex Marine Operator
27 161.950 157.350 Duplex Marine Operator
28 162.000 157.400 Duplex Marine Operator
60 160.625 156.025 Duplex Marine Operator
61A 156.075 156.075 Simplex Canadian Coast Guard
62A 156.125 156.125 Simplex Canadian Coast Guard
63A 156.175 156.175 Simplex Port Operation
64 160.825 156.225 Duplex Marine Operator
64A 156.225 156.225 Simplex Port Operation
65A 156.275 156.275 Simplex Port Operation
66A 156.325 156.325 Simplex, 1W Port Operation
67 156.375 156.375 Simplex Bridge To Bridge
68 156.425 156.425 Simplex Non Commercial
69 156.475 156.475 Simplex Non Commercial
70 156.525 Inhibit Receive only Digital Selective Calling
71 156.575 156.575 Simplex Non Commercial
72 156.625 156.625 Simplex Non Commercial
73 156.675 156.675 Simplex Port Operation
74 156.725 156.725 Simplex Port Operation
75 156.775 156.775 Simplex, 1W Port Operation
76 156.825 156.825 Simplex, 1W Port Operation
77 156.875 156.875 Simplex, 1W Port Operation
78A 156.925 156.925 Simplex Inter Ship
E-23
Uniden MHS75 Radio Owner’s Manual
Canadian Marine Channels
Ch RX Freq TX Freq Status Name
79A 156.975 156.975 Simplex Inter Ship
80A 157.025 157.025 Simplex Inter Ship
81A 157.075 157.075 Simplex Canadian Coast Guard
82A 157.125 157.125 Simplex Canadian Coast Guard
83 161.775 157.175 Duplex Canadian Coast Guard
83A 157.175 157.175 Simplex Canadian Coast Guard
84 161.825 157.225 Duplex Marine Operator
85 161.875 157.275 Duplex Marine Operator
86 161.925 157.325 Duplex Marine Operator
87 157.375 157.375 Simplex Port Operation
88 157.425 157.425 Simplex Port Operation
International channel frequencies and names
International Marine Channels
Ch RX Freq TX Freq Status Name
1 160.650 156.050 Duplex Marine operator
2 160.700 156.100 Duplex Marine operator
3 160.750 156.150 Duplex Marine operator
4 160.800 156.200 Duplex Marine operator
5 160.850 156.250 Duplex Marine operator
6 156.300 156.300 Simplex Inter-ship safety
7 160.950 156.350 Duplex Marine operator
8 156.400 156.400 Simplex Commercial (ship-ship)
9 156.450 156.450 Simplex Boater calling channel
10 156.500 156.500 Simplex Commercial
11 156.550 156.550 Simplex 9HVVHOWUDI¿FV\VWHP
12 156.600 156.600 Simplex 9HVVHOWUDI¿FV\VWHP
13 156.650 156.650 Simplex Bridge to bridge
14 156.700 156.700 Simplex 9HVVHOWUDI¿FV\VWHP
15 156.750 156.750 Simplex, 1W Environmental
16 156.800 156.800 Simplex Distress, safety, calling
E-24 Uniden MHS75 Radio Owner’s Manual
International Marine Channels
Ch RX Freq TX Freq Status Name
17 156.850 156.850 Simplex, 1W Govt maritime control
18 161.500 156.900 Duplex Port operation
19 161.550 156.950 Duplex Commercial
20 161.600 157.000 Duplex Port operation
21 161.650 157.050 Duplex Port operation
22 161.700 157.100 Duplex Port operation
23 161.750 157.150 Duplex Marine operator
24 161.800 157.200 Duplex Marine operator
25 161.850 157.250 Duplex Marine operator
26 161.900 157.300 Duplex Marine operator
27 161.950 157.350 Duplex Marine operator
28 162.000 157.400 Duplex Marine operator
60 160.625 156.025 Duplex Marine operator
61 160.675 156.075 Duplex Marine operator
62 160.725 156.125 Duplex Marine operator
63 160.775 156.175 Duplex Marine operator
64 160.825 156.225 Duplex Marine operator
65 160.875 156.275 Duplex Marine operator
66 160.925 156.325 Duplex Marine operator
67 156.375 156.375 Simplex Bridge to bridge
68 156.425 156.425 Simplex Non commercial
69 156.475 156.475 Simplex Non commercial
70 156.525 Inhibit Receive only Digital Selective Calling
71 156.575 156.575 Simplex Non commercial
72 156.625 156.625 Simplex Non commercial
73 156.675 156.675 Simplex Port operation
74 156.725 156.725 Simplex Port operation
75 156.775 156.775 Simplex, 1W Port operation
76 156.825 156.825 Simplex, 1W Port operation
77 156.875 156.875 Simplex Port operation (ship-ship)
78 161.525 156.925 Duplex Port operation
E-25
Uniden MHS75 Radio Owner’s Manual
International Marine Channels
Ch RX Freq TX Freq Status Name
79 161.575 156.975 Duplex Port operation
80 161.625 157.025 Duplex Port operation
81 161.675 157.075 Duplex Port operation
82 161.725 157.125 Duplex Port operation
83 161.775 157.175 Duplex Port operation
84 161.825 157.225 Duplex Marine operator
85 161.875 157.275 Duplex Marine operator
86 161.925 157.325 Duplex Marine operator
87 157.375 157.375 Simplex Marine operator
88 157.425 157.425 Simplex Marine operator
Weather channel frequencies and names
Channel RX
WX01 162.5500
WX02 162.4000
WX03 162.4750
WX04 162.4250
WX05 162.4500
WX06 162.5000
WX07 162.5250
WX08 161.6500
WX09 161.7750
WX10 163.2750
E-26 Uniden MHS75 Radio Owner’s Manual
Regulations and Safety Warnings
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. See pages
28 through 32 for tables of the available channels and their
uses. If you are still not certain which channels to use, see
the FCC maritime radio page at the FCC website
(http://wireless.fcc.gov/marine/) or contact the FCC Call
Center at 1-888-CALL-FCC. For individuals requiring a
license, such as commercial users, you should obtain a
OLFHQVHDSSOLFDWLRQIURP\RXUQHDUHVW)&&¿HOGRI¿FHIRU86
users) or Industry Canada (for Canadian users).
Basic radio guidelines
You should familiarize yourself with the rules on marine
radios and be aware of which rules apply to your boat.
Complete guidelines for all ship and marine radio types can
be found at the US Coast Guard website under the topic
Radio Info for Boaters (the direct link is
http://www.navcen.uscg.gov/marcomms/boater.htm).
Here are a few guidelines that affect nearly all boaters.
If you have a VHF radio on your boat, you must maintain a watch on channel 16 (156.800 MHz) whenever the radio is
not being used to communicate. Starting in 2004, if a radio
is carried, it must be on and set to channel 16 whenever
your boat is underway.
If you hear a distress call, wait a few minutes to let a shore station or Coast Guard vessel respond. If no other station
has responded after 5 minutes, you must respond to the
distress call.
WARNING! Read this information before using the radio.
E-27
Uniden MHS75 Radio Owner’s Manual
Do not make false mayday or distress calls as a prank or to test your radio. (This is essentially like making a false 9-
FDOO\RXPD\EHVXEMHFWWR¿QHV
FCC/Industry Canada information
&HUWL¿FD tion: FCC Part 80 or RSS-182
Output Power: 5W
Emission: 16K0F3E
Transmitter Frequency Range: 156.025-157.425 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.
8QDXWKRUL]HGFKDQJHVRUPRGL¿FDWLRQVWRWKLVHTXLSPHQW
may void compliance with the FCC Rules. Any change
RUPRGL¿FDWLRQPXVWEHDSSURYHGLQZULWLQJE\8QLGHQ
&KDQJHVRUPRGL¿FDWLRQVQRWDSSURYHGE\8QLGHQFRXOGYRLG
the user’s authority to operate the equipment.
FCC RF exposure information
In August 1996 the Federal Communications Commission
(FCC) of the United States with its action in Report and
Order FCC 96-326 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:
E-28 Uniden MHS75 Radio Owner’s Manual
Use only the supplied or an approved antenna.
8QDXWKRUL]HGDQWHQQDVPRGL¿FDWLRQVRUDWWDFKPHQWV
could impair call quality, damage the radio, or violate 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 exposure, please visit the FCC website
at www.fcc.gov.
Lithium ion battery warning
This equipment contains a rechargeable Lithium Ion battery.
The rechargeable Lithium Ion battery contained in this
HTXLSPHQWPD\H[SORGHLIGLVSRVHGRILQD¿UH
Do not short-circuit the battery.
Do not charge the rechargeable battery used in this equip-
PHQWLQDQ\FKDUJHURWKHUWKDQWKHRQHVSHFL¿HGLQWKH
owner’s manual. Using another charger may damage the
battery or cause the battery to explode.
Li-Ion batteries must be recycled or disposed of properly.
Avoid exposing the battery (whether attached to the radio
or not) to direct sunlight, heated cars, or temperatures
below -4°F (-20°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.
E-29
Uniden MHS75 Radio Owner’s Manual
In case of exposure to the cell contents, wash the affected
area thoroughly, and seek medical attention.
Three Year Limited Warranty Statement
WARRANTOR: UNIDEN AMERICA CORP. (“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
RUQHFHVVDU\%PRGL¿HGDOWHUHGRUXVHGDVSDUWRIDQ\
FRQYHUVLRQNLWVVXEDVVHPEOLHVRUDQ\FRQ¿JXUDWLRQVQRW
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 war-
ranty is in effect, warrantor will repair the defect 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 performance of this
warranty. 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
E-30 Uniden MHS75 Radio Owner’s Manual
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.
/(*$/5(0(',(67KLVZDUUDQW\JLYHV\RXVSHFL¿FOHJDO
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