Uniden UM355 Owner's Manual
UM355 VHF
Marine Radio
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Making a distress call
2
Speak slowly - clearly - calmly.
For future reference, write your boat’s name & call sign here:
1. Make sure your radio is on.
2. On the radio, press the 16/67-Tri button to switch to Channel 16 (156.8 MHz). (If
the corner of the display does not show 16, press the 16/67-Tri button again until
it does.)
3. Press the push to talk button and say: “MAYDAY -- MAYDAY -- MAYDAY.”
4. Say “THIS IS {name of your boat (three times) and call sign/boat registration
number (once)}.”
5. Say “MAYDAY {name or call sign of your boat}.”
6. Tell where you are: (what navigational aids or landmarks are near, or read the
latitude and longitude from your GPS).
7. State the nature of your distress, (e.g. are you sinking, medical emergency, man
overboard, on fire, adrift, etc.)
8. State the type of assistance you need (medical, towing, pumps, etc.).
9. Give number of persons aboard and conditions of any injured persons.
10. Estimate present seaworthiness of your ship (e.g. how immediate is the danger
due to flooding or fire or proximity to shore).
11. Briefly describe your ship, giving the ship name (e.g. “Blue Duck is 32 foot cabin
cruiser, white hull, blue deck house”).
12. Say: “I WILL BE LISTENING ON CHANNEL 16.”
13. End message by saying “THIS IS {name or call sign of your boat}, OVER.”
14. Release the push to talk button and listen.
If you do not get an answer after 30 seconds, repeat your call, beginning at step 3,
above.
Making a DISTRESS Call
3
Table of Contents (Cont'd)
Making a DISTRESS Call.................................................................................................. .........2
Table of Contents .................................................................................................3 (this page)
Introduction ....................................................................................................................... .........5
Features......................................................................................................................... .........5
Manual overview ............................................................................................................ .........5
Conventions ................................................................................................................ .........5
Getting Started .................................................................................................................. .........6
What's included ......................................................................................................................... ......... 6
Parts of the radio ....................................................................................................................... ......... 7
Turning on the radio .................................................................................................................. ....... 10
Setting the UIC channel mode (USA/CAN/INT) ...................................................................... ....... 10
How It Works ..................................................................................................................... .......10
Normal mode operation ................................................................................................. .......11
Using the radio in normal mode .................................................................................. .......12
Normal mode with Triple and Dual Watch .................................................................. .......12
Scan mode..................................................................................................................... .......13
Using the radio in scan mode ..................................................................................... .......13
Scan mode with Triple and Dual Watch ...................................................................... .......14
Weather mode ........................................................................................................... .......14
Using Your Radio .............................................................................................................. .......15
Setting the volume ......................................................................................................... .......15
Setting the squelch level ................................................................................................ .......15
Changing the channel .................................................................................................... .......15
Making a transmission ................................................................................................... .......16
Boosting the transmission power ................................................................................ .......16
Instant Channel .......................................................................................................... .......16
Siren Out .................................................................................................................... .......17
Changing display and sound options .......................................................................... .......17
Dimmer ....................................................................................................................... .......17
Turning the key beep on and off ................................................................................. .......17
Installing the Hardware .................................................................................................... .......18
Mounting the radio ......................................................................................................... .......18
Installing flush mount bracket............................................................................................... 20
Connecting the radio...................................................................................................... .......21
Connecting accessories................................................................................................. .......23
Connecting to an external speaker ................................................................................ .......23
Maintenance and Troubleshooting ................................................................................. .......24
Common questions ................................................................................................................... ....... 24
Engine Noise Suppression ....................................................................................................... ....... 25
Specifications ................................................................................................................... .......26
Channel and frequencies ............................................................................................................... ....... 29
Regulations and Safety Warnings ............................................................................................. ....... 35
Antenna Selection and Installation ................................................................................ .......35
Two Year Limited Warranty .............................................................................................. .......36
Mounting Bracket Template ............................................................................................. .......37
Table of Contents
4
Table of Contents
Table 1 - Front panel button functions ................................................................................ ....... 7
Table 2 - Rear panel connector functions .......................................................................... ....... 8
Table 3 - Microphone button functions ............................................................................... ....... 9
Table 4 - Radio specifications ............................................................................................ ..... 26
Table 5 - International Channel Frequencies and Channel Tag ......................................... ..... 29
Table 6 - USA Channel Frequencies and Channel Tag ...................................................... ..... 31
Table 7 - Canadian Channel Frequencies and Channel Tag ............................................. ..... 33
List of Tables
5
Introduction
Features
• Splashproof
Meets the world standard JIS4 level. Being defined as no harmful influence by
receiving a splash of water from any direction.
• Large, LCD display
• 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 25 watts for added transmission
distance.
• Battery level display and tone
Sounds an alert tone if the battery voltage goes too high or too low.
• Triple Watch Operation
Checks the emergency channel 16 and channel 67 in the background.
• All marine VHF channels for the International, U.S. and Canadian waters
• Siren Out
• Instant Channel
• Weather Mode
• One Touch 16/67 channel
Manual overview
Conventions
This manual uses several different type styles to help you distinguish between
different parts of the radio:
• BOLD SMALL CAPITALS indicates an actual button or knob on the radio or
microphone.
Introduction
• Upper and Lower case bold indicates a connector or label on the radio.
• Italicsindicatetextonthedisplay,suchasmenuoptions,prompts,andconrmationmes-
sages.
Getting Started
6
What's included
UM355 Radio
DC Power Cable
Accessory Cable
Mounting Bracket and
knobs
Mounting Hardware
Microphone Hanger and
Mounting Hardware
Flush Mount Bracket
Getting Started
7
Getting Started
Table 1 - Front panel button functions
Button Press to... Press and hold to...
CHANNEL UP
Move up one channel at a
time.
Move quickly up the channels.
CHANNEL DOWN
Move down one channet at a
time.
Move quickly down the channels.
16/67-TRI
1st press: Go to Channel 16.
2nd press: Go to Channel 67.
3rd press: Go back to the
original channel.
Go into Triple Watch
INST
Instant CH call Instant CH programming
WX-DUAL
Selecty WX Channel Select Dual Watch Function
SCAN-MEM
Select Scan function Memory or remove scan channel
SIREN
Siren tone one cycle output Siren tone output continually
1W/25W/UIC
Select transit power 1W or
25W
Select US, International or
Canadian mode.
INST
WX-DUAL
SCAN-MEM
16/67-TRI
1W/25W-UIC
SIREN
SQUELCH
knob (turn
clockwise
to decrease
channel noise)
LCD Display
CHANNEL UP &
CHANNEL DOWN
button
VOLUME-PWR
(power) knob
(turn clockwise to
increase volume)
Parts of the radio
Getting Started
8
13.8V DC
ANTENNA
Table 2 - Rear panel connector functions
Connector Connects to For details, see
Antenna connector External VHF antenna with
a male PL259 (SO238)
connectorand50Ω
impedance.
Minimum 1.2m, 3dB rated
antenna for sailboats, 2.4m, 6
dB rated for power boats.
Connecting the radio,
page 21.
Power connector Nominal 13.8 VDC power
supply with negative ground
(10.8 VDC to 15.6 VDC)
(Red wire +, black wire -).
Connecting the radio,
page 21.
Accessory connector External speaker Connecting accessories,
page 23.
Antenna
Connector
(SO238)
Heat sink
Accessory
connector
Power
Connector
9
Getting Started
Table 3 - Microphone button functions
Button Press to... Press and hold to...
PUSH TO TALK
Cancel scanning and stay on a
channel.
Talk on a channel.
PUSH-TO-TALK
Button
How It Works
10
Turning on the radio
Turn the
VOLUME-PWR
knob clockwise to turn on the radio.
When it powers on, the radio selects the last channel used.
How It Works
The UM355 has three basic modes of operation:
Operation mode What it does: Use it when: To turn it on/off:
Normal mode Monitors a single
marine radio
channel and lets
you talk on that
channel.
You want to talk to
another station on a
specicchannel.
(default mode)
Scan mode Monitors all the
channels you save
into memory.
You have a small
group of channels
you use most often
and want to check
themfortrafc.
Press
SCAN-MEM.
Weather mode Monitors the select-
ed weather channel
You want to hear
the current or forecasted weather.
Press
WX/DUAL
Setting the UIC Channel Mode (USA/CAN/INT)
Press and hold
1W/25W/UIC
to toggle between the modes, US, INT and CAN.
Note :If the UIC mode is changed, MRN CH is set to select previous CH in each
mode. And Each of Scan mode, Triple/Dual Watch, EMG 16CH or 67CH mode and
WX mode are canceled at this time.
11
How It Works
NOTE: You are required to monitor channel 16 whenever your boat is underway.
You should have Triple Watch on at all times.
In addition to the two main operation modes, the UM355 also provides two different
“watch” modes which you can activate during any of the two basic modes. In the
watch modes, the radio briefly checks for activity on a specific channel, then returns
to its previous mode.
Normal mode monitors whatever channel you select, and you can transmit on that
channel also. While using normal mode, the display lets you see the following
information (not all indicators will display at the same time):
Watch mode What it does: Use it when: To turn it on/o:
Triple Watch Checks for activity
on channels 16
and 67 every two
seconds.
You want to monitor
a channel yet
maintain a watch on
channels 16 and 67.
Press and hold the
16/67-TRI button for
two seconds.
Dual Watch Checks for activity
on Instant Channel
every two seconds.
You want to monitor
a channel yet
maintain a watch on
Instant Channel.
Press and hold the
button for
seconds.
WX/DUAL
two
Normal mode operation
Icon Detail
(TX) This indicator is indicated only when the PTT key is pressed and
the radio is sending a transmission.
LO / HI This indicator is indicated whether the transmitting power is LO
or HI. This is not indicated at WX mode and on the receiving only
channels of MRN.
MEM This indicator is indicated if the displayed channel is programmed
into the memory for scanning.
INST This indicator is indicated while current channel is instant channel.
SCAN This indicator is indicated while in Scan mode.
TRI This indicator is indicated while Triple Watch is enabled.
DUAL This indicator is indicated while Dual Watch is enabled.
US / INT / CAN This indicator is indicated the country mode that the channel is in.
WX This indicator is indicated it is in the WX mode.
(CH Indicators)
These indicators are indicated the present channel number.
How It Works
12
Using the radio in normal mode
• To transmit, press and hold
PUSH TO TALK
on the microphone. Release the button
when you are finished talking.
• For the best sound quality, hold the microphone about two inches from your mouth
while you’re talking.
• Press
CHANNEL UP
on the radio to move up one channel at a time. Press and hold
either button to scroll quickly up the channels.
• Press
CHANNEL DOWN
on the radio to move down one channel at a time. Press and
hold either button to scroll quickly down the channels.
• To change the transmit power, press
1W/25W/UIC
. The transmit power switches
between 1 watt and 25 watts each time you press
1W/25W/UIC
.
67
16
67
16
67
16
Every 2 seconds, the radio
checks channels 67 & 16.
with Triple Watch on
Monitoring Channel 25
Press and hold the
WX-DUAL
or
16/67-TRI
button (on the radio) for two seconds to turn
Triple/Dual Watch on or off.
Normal mode with Triple and Dual Watch
If you activate Triple Watch while operating in normal mode, the radio checks
channels 16 and 67 every two seconds; with Dual Watch turned on, the radio only
checks Instant Channel. The radio will not check channels 16 or 67 while you are
actively transmitting; it waits until your transmission is finished and then checks the
channels.
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