Uniden UM423 AM User manual

UM423 AM
AM Marine Radio
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2
Table of Contents
Introduction ........................................................................................................................... 3
Features.......................................................................................................................3
Manual overview .........................................................................................................3
Getting Started...................................................................................................................... 4
What's included ..........................................................................................................4
Parts of the radio .........................................................................................................5
Operation ............................................................................................................................... 8
Turning on the Power ..................................................................................................8
Setting the Manual Squelch.........................................................................................8
Selecting a Channel.....................................................................................................9
Transmitting ...............................................................................................................10
Call Function..............................................................................................................10
Channel 88 ................................................................................................................10
Dual Watch ................................................................................................................10
Scanning ...................................................................................................................11
Open Scan (OS) Mode .............................................................................................12
Group Scan (GS) Mode.............................................................................................12
Priority Channel .........................................................................................................13
Add/Remove Channels from SCAN Memory.............................................................13
Busy Channel Lockout...............................................................................................14
Back Light..................................................................................................................14
Roger Beep................................................................................................................15
Beep On/Off...............................................................................................................16
Selecting the Call tone...............................................................................................16
ANL (Automatic Noise Limiter) ..................................................................................17
NB (Noise Blanker)....................................................................................................17
Using the PA feature..................................................................................................18
Using the Siren feature..............................................................................................18
Installing the Hardware ..................................................................................................... 19
Mounting the radio ....................................................................................................19
Connecting the radio..................................................................................................21
Connecting accessories.............................................................................................23
Connecting to an External Speaker.......................................................................... 24
Connecting to an external PA Speaker .....................................................................25
Maintenance and Toubleshooting .................................................................................. 26
Common questions....................................................................................................26
Engine Noise Suppression ...................................................................................... 26
Specifications...................................................................................................................... 27
Australia AM Marine Channels & Frequencies .............................................................. .28
Regulations and Safety Warnings ..............................................................................29
Basic radio guidelines................................................................................................29
Antenna Selection and Installation.............................................................................29
2 Year Limited warranty ..................................................................................................... 30
Mounting Bracket Template .............................................................................................. 31
Table of Contents
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3
Introduction
Features
Designed and Engineered in Japan•
Built for Rugged Australian Marine Conditions•
2 Year Warranty•
Dual Speakers:• One speaker is mounted at the front of the unit allowing better sound clarity
and the second speaker is built into the microphone hand piece.
4 Watts Maximum TX Output Power•
10 AM Marine Channels:• Allows you to choose from all the Inshore Boating Radio Services
channels to transmit or receive messages.
Watertight Radio Housing:• Meets the worldwide JIS6 water-resistance specication, which
means the radio is able to withstand powerful water jets without damage
Rugged Waterproof and Submersible Speaker Microphone:• With Channel Select, One-
Touch Ch88 and Dual Watch Select Keys. Meets the worldwide JIS7 waterproof specication;
submersible to 1.0 metre depth for 30 minutes
Variable Squelch Level Knob:• Adjust the threshold of the receiver to eliminate background
noise whenever a transmission is not being received
Volume Control Knob:• Rotary Power on/off and volume control
Backlit Keypad and LCD Display:• The keypad and Extra Large Liquid Crystal Display (LCD)
is backlit for easy viewing at night or in low light situations, and features a 3 level dimmer
function
RF Level Bar Indicator:• View the radio frequency signal strength.
Built-in PA Output:• Connect optional PA speaker for Public Address and Siren Function.
Siren Alert Function:• Alert nearby vessels with connection of an optional PA speaker
ANL (Automatic Noise Limiter) Function:• Reduces unwanted signal noise for better clarity.
NB (Noise Blanker) Function:• Reduces unwanted power or ignition noise
One Touch Channel 88 Recalling:• Instantly switch to the emergency Ch 88 with the touch of
one button on the radio or the microphone
Open Scan:• Scans all the channels in memory and locks on active channels
Group Scan (GS) with Priority Channel Watch:• Allows the user to select the channel they
want to monitor / listen to in a group, along with a priority channel (priority watch)
Dual Watch Function:• Allows you to monitor Ch 88 for activity every two seconds while
monitoring another channel at the same time.
Roger Beep:• Conrmation tone indicates the completion of your transmission
Call Tone Function:• Choose from one of 5 ringing tones to initiate your transmission with the
touch of one button
Accessory connector: For connecting optional External Speaker and PA Speaker•
And More!•
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.
• Upper and Lower case bold indicates a connector or label on the radio.
• Italics indicate text on the display, such as menu options, prompts, and conrmation
messages.
Introduction
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Getting Started
4
What's included
AM TRANSCEIVER
UM423 AM Radio
DC Power Cable Accessory Cable
Mounting Bracket and
knobs Mounting Hardware
Microphone Hanger and
Mounting Hardware
Spare Fuse 250V 3A
Getting Started
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5
Getting Started
Parts of the radio
13.8V DC
ANTENNA
Antenna
connector
(SO238)
Heat sink
Power
connector
Accessory
connector
Rear panel connector functions
Connector Connects to For details, see
Antenna connector External AM antenna with
a male PL259 (SO238)
connector and 50 Ω
impedance.
Minimum 1.2m, 3dB rated
antenna for sailboats, 2.4m, 6
dB rated for power boats.
Connecting the radio,
page 22.
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, external PA
speaker.
Connecting accessories,
page 23.
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Getting Started
6
VHF DSC TRANSCEIVER
AM TRANSCEIVER
LCD
display
MENU /
ENTER
BUTTON
CHANNEL UP &
DOWN buttons
VOLUME-PWR
(power) knob
(turn clockwise
to increase
volume)
Microphone
cord
88 / DUAL
(DUAL-WATCH)
BUTTON
ANL / NB
button
SCAN / MEM
(channel
memory)
button
CALL / PA
(public
address)
button SIREN
button
SQUELCH knob
(turn clockwise
to decrease
channel noise)
Button Press to... Press and hold to...
MENU Select the option in MENU mode Store new setting and exit
MENU mode
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.
88 / DUAL Go to Channel 88 Dual Watch mode (see
page 10).
SIREN Initiate siren tone for one cycle Initiate continuous siren
output
Front panel button functions
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7
Getting Started
Button Press to... Press and hold to...
ANL / NB ANL (Automatic Noise Limiter) on/
off
NB (Noise Blanker) on/off
CALL / PA Call tone transmission PA mode on/off
SCAN / MEM Start scanning the channels saved
in memory.
Save a channel into
memory or remove a
channel from memory.
88/
DUAL
MIC
MIC
PTT (PUSH-
TO-TALK)
button
88 / DUAL
(Dual-Watch)
button
(up) button
(move up a channel)
(down) button
(move down a channel)
Microphone button functions
Button Press to... Press and hold to...
Move up one channel at a time. Move quickly up the
channels.
Move down one channel at a time. Move quickly down the
channels.
88 / DUAL Go to Channel 88 Dual Watch mode (see
page 10).
PTT (PUSH-TO-
TALK)
Temporarily stop scanning and stay
on a channel.
Talk on a channel.
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Operation
8
MENU
ENTER
MON
DCS/CTCSS
MON
DCS/CTCSS
MENU
ENTER
Turning on the Power
Turn the radio ON by rotating the Volume/ON/OFF control clockwise.
Setting the Manual Squelch
Turn the SQUELCH control to adjust the Squelch.
You must select a channel which is not in use before setting the SQUELCH control.
(see page 9 for “Selecting a Channel”).
Operation
Think of the squelch
control as a gate. If you
turn Squelch fully
clockwise it raises the
‘Squelch gate’ so high that
no signals get through.
If you turn the Squelch
fully counterclockwise it
lowers the ‘Squelch Gate’
to the extent that all
signals get through -
weak, medium and strong
signals and noise.
To set the ‘Squelch Gate’
to the desired level, turn
the squelch knob
counterclockwise until you
hear noise. Then carefully
turn the Squelch knob
clockwise until the noise
fades. Now only strong
signals get through.
AM TRANSCEIVER
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9
Operation
Selecting a Channel
Press or keys on the handset
or base to select the desired channel.
For your reference a list of the available channels, corresponding frequencies
and guidelines for their use is printed on page 28.
AM TRANSCEIVER
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Operation
10
Transmitting
The UM423 AM radio uses the Inshore Boating
Radio Service Band channels.
Select the desired channel. Press the microphone’s PTT
button and speak normally into the microphone. Hold it
approx. 7cm from your mouth. Release the PTT button to
end the transmission and listen for a reply.
Call Function
Use the Call Function to transmit a call (wake up) tone. Press
the [CALL/PA] button on the base. A three second ringing
tone will be transmitted.
You may select from 5 types of tones (see page 14).
Call Tone cannot transmit on Emergency CH88 and CH86.
The Call Tone Function is restricted to one transmission per minute. If a second
transmission is attempted within one minute then an error tone will sound.
Channel 88
Instantly switch to emergency Channel 88.
Press [88/DUAL] on the handset or base.
DUAL Watch
Dual watch will monitor the Priority Channel and the current
channel for activity. Dual watch is suspended when there
is activity and resumes after activity ceases (see Priority
Channel on page 13).
Press and hold [88/DUAL] on the handset or base. DUAL icon
appears and a short tone beep is heard.
To cancel DUAL Watch press and hold [88/DUAL] on the
handset or base. DUAL icon disappears.
PTT
88/
DUAL
MIC
MIC
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