Uniden uh078sx User manual

To bring outstanding wireless communication products
to people's lives throughout the world.
Operating Guide
uh078sx

WARNING!
i
WATERPROOF: JIS7
Uniden's uh078sx radio is designed to meet the water proofing
standard of JIS7.
This Means:
Being defined as having no ingress of water when immersed at 1
meter for 30 minutes
The uh078sx will only meet this rating if fully assembled and all
rubber seals and bungs are well maintained and correctly fitted.
This means that the speaker microphone bung is inserted, and
the battery pack and antenna are attached and securely
fastened.
This is NOT a rating that allows for the unit to be submersed.
LITHIUM ION BATTERY PACK WARNING
MThis equipment contains a Lithium Ion Battery Pack.
MThe Lithium Ion Battery Pack contained in this equipment may
explode if disposed of in a fire.
MDo not short-circuit the Battery Pack.
MDo not charge the Lithium Ion Battery Pack used in this
equipment in any charger other than the one designed to
charge this Battery Pack. Using another charger may damage
the Battery Pack or cause the Battery Pack to explode.
MLithium Ion batteries must be disposed of properly.
USER LICENSE INFORMATION
The citizen band radio service is licenced in Australia by
ACMA Radio-communications (Citizen Band Radio
Stations) Class Licence and in New Zealand by MED
General User Licence for Citizen Band Radio and
operation is subject to conditions contained in those
licenses.

CONTENTS
1
Introduction
Features ..................................................................................................2
Included in your Package ........................................................................3
Getting Started
Connect charger with AC adaptor............................................................4
Attaching the Antenna .............................................................................4
Attaching the Battery Pack ......................................................................5
Attaching the Beltclip ...............................................................................5
Charging the Battery Packs.....................................................................6
Battery Level Display...............................................................................7
Operation
Power On/Off...........................................................................................8
Volume.....................................................................................................8
Adjusting the Key Beeps .........................................................................8
Roger Beep .............................................................................................9
Selecting Channel ...................................................................................9
Transmitting a Call Tone ........................................................................ 9
Squelch..................................................................................................10
To Transmit and Receive ......................................................................11
Using a Repeater Channel ....................................................................12
To Operate uh078sx in Duplex Mode ....................................................13
Scanning................................................................................................13
Open Scan (OS) Mode....................................................................13
Group Scan (GS) Mode...................................................................14
Programming Scan Channels .........................................................15
Priority Channel .....................................................................................15
Choosing a Priority Channel............................................................15
Drop-Out Delay......................................................................................15
60 Receive Channels ....................................... ....................................16
Manual Programming ....................................... ..............................16
Deleting a Programmed receive Channel ............ ......................... 16
Advanced Features ...............................................................................17
CTCSS (Continuous Tone Coded Squelch System) .......... ............17
DCS (Digital Coded Squelch) .........................................................17
DCS/CTCSS Scan Operation..........................................................17
VOX ................................................................................................17
Power Save ...........................................................................................19
Back Lighting .........................................................................................19
Keypad Lock .........................................................................................19
Busy Channel Lock-out (BCL) ...............................................................20
UHF Channel and Frequencies.................................................................21
CTCSS & DCS Code List ...........................................................................22
Controls and Indicators ...........................................................................23
Warranty .....................................................................................................25

2
INTRODUCTION
The uh078sx is a JIS7 Waterproof, portable two-way UHF-CB radio.
It is compact, rugged and fits easily in your hand. This hand held
UHF radio will give you consistent, outstanding performance in
virtually all conditions and situations. To ensure that you get the
most from the uh078sx features, please read this operating guide
carefully before using the unit.
FEATURES
!40 UHF CB Channels
!5W Max TX Power
!0.5W/1W/5W Switchable TX Power
!60 Programmable RX Channels
!38 Built-in CTCSS codes & 104 additional DCS codes
!5 Call Tones
!Backlit Keypad & LCD Display
!Duplex Mode
!Open and Group Scan
!Priority Scan On/Off
!Busy Channel Lockout Function
!VOX Function
!Headset Jack
!Keypad Lock
!Waterproof (meets JIS7 waterproof specifications)
!Rubber Grips/Seal
!Battery Type: Lithium-lon Rechargeable
!Low Battery Alert
!Battery strength Indicator
!Auto Battery Save
!Roger Beep
!Key Beep On/Off

3
INCLUDED IN YOUR PACKAGE
Drop-in Charger
(DT078A)
Beltclip
Wrist Strap
2 x Lithium Batteries
(BP078)
AC adaptor
(AAD-008S)
uh078sx Antenna
Reference Guide/
Printed Material External Speaker Mic
(SM-078)
If any of these items are missing from the box, contact your
Uniden Dealer, immediately.
OPTIONAL ACCESSORIES
MVOX Headset (VM-078)
MHeavy Duty Speaker Mic

4
GETTING STARTED
Connect Charger with AC adaptor
Plug one end of the AC adaptor into the wall
outlet and the other end into the drop-in charger.
Attaching the Antenna
Attach the antenna to the uh078sx.
Be sure the antenna is firmly seated.

5
Attaching the Battery Pack
1. Place the battery pack onto the back of the
radio. It will only fit in one way.
2. Snap the battery release clip until it clicks.
Be sure the battery pack fits tightly against
the uh078sx body.
Attaching the Beltclip
1. Hold the beltclip in the direction.
2. Apply it to the hanger piece on the back of
the radio. Then slide it up.
3. You will hear a click. The beltclip is firmly
attached.
Contacts
Avoid exposing the Lithium Ion battery, attached or unattached to
the radio, in direct sunshine, heated cars, or in areas with
temperatures below –20°C (–4°F) or above +60°C (+140°F).
Exposing the chemicals contained within the battery pack to
temperatures above +60 °C (+140°F) may cause the battery to
rupture, fail or reduce performance.
In case of exposure to cell contents, wash the affected area
thoroughly, and seek medical attention.
Additional battery cautions should be applied as described on page
i of your Owner ’s Manual.
CAUTION!

6
Charging the Battery Packs
Your radio is powered by a specially designed Lithium Ion battery pack.
!Before operating the uh078sx, charge the Lithium Ion battery pack for 5
hours without interruption in the drop-in charger.
1. Place the uh078sx in the drop-in charger.
!The charger won’t overcharge the battery packs. When charging is
completed, the charge LED is no longer illuminated.
!Do not transmit when the uh078sx is in the drop-in charger!
!You can monitor incoming calls while the uh078sx is in the
drop-in charger.
4. To take the beltclip off the radio, turn it
and slid it up.
The drop-in charger can charge the Lithium Ion battery pack attached to the
uh078sx in the front charging slot and also charge a second Lithium Ion
battery pack separately in the rear charging slot.
When you charge the 2nd battery, be sure to push it all the way into the
charge slot.
2. The red LEDs illuminate and stay ON, until fully charged.

7
Battery Level Display
The BATTERY icon in the top right hand corner of the screen indicates the
uh078sx current battery voltage level at all times. The battery level is displayed in
4 levels.
LEVEL 4
Battery 100% full
LEVEL 3
Battery approx. 40% capacity
LEVEL 2
Low Battery
LEVEL 1 (flashing)
Empty Battery
When is pressed at Level Empty, battery icon and
channel number will flash, transmission is disabled.
Recharge the battery at any time. From empty the battery
will take up to 5 hours to fully charge.
Battery Life :
15 Hours (Low Power), 14 Hours (Mid Power), 9 Hours (High Power)
This is based on the following Duty Cycle:
Transmit 5%
Receive 5%
Stand-by 90%
PTT

8
OPERATION
POWER ON/OFF
To turn the unit ON, rotate the [ON/OFF VOL]
clockwise. A channel number and battery level
should appear on the display.
To turn the unit OFF, rotate the [ON/OFF VOL]
knob counter-clockwise. The display will disappear.
ADJUSTING THE KEY BEEPS
Your radio emits a beep each time-one of the keys (except for the PTT or mon)
are pressed.
VOLUME
Rotate the [ON/OFF VOL] knob clockwise or counter-clockwise to adjust
speaker volume to desired listening level.
See the Controls and Indicators page at the back of this operating guide for
button and key operations.
1. Press seven times. bP flashes and the current setting displays.
2. Press or to change setting ON/OFF.
3. Press and hold to store setting.
UH078SX

9
ROGER BEEP
Roger Beep is a BEEP that is sent to notify the end of transmission (both PTT
and VOX transmission). Roger Beep can be heard through the speaker when
Key Beep is on. Roger Beep is transmitted even if key beep is turned off.
However Roger Beep will not be heard from the speaker.
1. Press six times. and current setting flashes.
2. Press or to change setting ON/OFF.
3. Press and hold to store setting.
SELECTING CHANNEL
Press or to select the desired channel.
If you press and hold the or ,
channel number will scroll rapidly.
TRANSMITTING A CALL TONE
Your uh078sx is equipped with 5 selectable call tones that will be
transmitted when is pressed.
Current regulations require calling tones to be restricted to one
transmission per minute. If a second transmission is attempted
within one minute then an error tone will sound.
1. Press three times. The current setting flashes.
2. Press or to change setting
between C1, C2, C3, C4 and C5.
3. Press and hold to store setting.

10
SQUELCH
The squelch is used to eliminate any annoying background noise when there
are no signals present.
Think of squelch as a gate. Turn [SQ] fully
clockwise. This raises the "Squelch Gate" so high
that only the very strong signals can get through.
Turn [SQ]
fully counter clockwise until you hear a
hiss. This opens the "Squelch Gate" so that
everything gets through noise, weak signal, and
strong signals.
To set the "Squelch Gate" to the desired level, turn
[SQ] counter-clockwise until you hear noise. Then
turn the [SQ] clockwise just until the noise
stopped. Now only the desired signal can get
through.
If an incoming signal is very weak there is a
possibility that you will have a choppy or broken
reception, due to the sensitivity of the squelch.
In this case, simply rotate the [SQ] clockwise
until the weak signal is heard clearly.
Noise
Weak Signals
Medium Signals
Strong Signals
Make sure to first select a channel not in use before setting the
squelch in your uh078sx UHF-CB radio.
UH078SX

11
TO TRANSMIT AND RECEIVE
The uh078sx uses the 40 UHF-CB Channels. For your reference a list of the
available channels and corresponding frequencies is printed at the end of this
manual.
1. The maximum RF transmit power of uh078sx is
5 watts.
2. Before you transmit, listen for activity on the
selected channel.
3. When the channel is clear, press and hold the
to transmit. TX appears on the LCD.
4. When you have finished speaking, release the
and listen for a response. TX indicator
then disappears on the LCD.
The display shows BUSY when a transmission
is being received by your radio.
Hold the radio with microphone approximately
five cms in front of your mouth with the
antenna at approximately 45* angle away from
your head. Speak in a clear, normal
conversational voice.
Press to change the transmit power
between High(5W), Middle(1W) and Low(0.5W).
HI appears when on high power. LO appears
when on low power. HI and LO disappear when
on middle power.
PTT
PTT
UHF Channels 22 and 23 are for telemetry and telecommand
applications. Transmit is inhibited on these channels.
LO
LO

12
USING A REPEATER CHANNEL
UHF CB Repeaters are used to retransmit or relay your signal. Repeaters will
extend the range of your radio and overcome the shielding effect caused by
solid obstructions.
In normal Simplex operation, your radio transmits on one particular frequency
and receives on that same frequency. If there is a barrier (i.e. a Tall Building)
that partially blocks your transmitted signal, the possibility of the other radio
receiving the signal is very slim. Valleys, metallic structures, etc., tend to act as a
screen between radios.
With Duplex operation, the signal coming from your radio is received by the
Repeater station and then re-transmitted at the same time on another channel.
Your uh078sx is designed with duplex capability on Channels 1 to 8. When any
of these channels are set to operate in duplex mode during transmission, the
uh078sx automatically sends the signal at a frequency 30 channels above the
original in order to access the repeater station. After transmitting, the radio
reverts back to its original operating frequency.
For example:
1. CH01 is on Duplex Mode
- will receive on CH01 but Transmit on CH31
2. CH02 is on Duplex Mode
- will Receive on CH02 but Transmit on CH32, etc….
Refer to UHF Channel & Frequencies table on page 21.
Standard Operation without the aid of a Repeater Station
Operation with the aid of a Repeater
Normal Simplex Operation
Transmitting on CH 01
No signal being
received
Repeater Station
CH 31 CH 01

13
TO OPERATE uh078sx IN DUPLEX MODE
Eg. CH01 is being used in your area for repeater use.
SCANNING
The uh078sx has two types of scanning; Open Scanning (OS) and Group
Scanning (GS).
Scanning allows you to search for active channels
programmed in the OS or GS memory.
To initiate scanning;
1. Assuming the unit is on CH17 when switched on.
2. Press and scanning starts. SCAN is displayed during scanning.
Open Scan (OS) Mode (the absence of GS icon indicates that the unit is on
OS mode)
Allows continuous scanning of channels stored in the Open Scan (OS) memory.
If an active channel is found, scanning will stop on that channel.
The factory has preprogrammed all the 40 UHF channels into the
Open Scan channel memory. However, you can change or
customize the channels by following the steps on programming
Scan Channels on page 15.
Example: CH40 becomes active
If the received signal cease, the unit will wait for at least 3 seconds for the
signal to return, otherwise scanning resumes.
To skip the active channel, press momentarily. Scanning resumes.
To deactivate SCAN, press or .
Check with your local retailer for available repeaters.
1. Press dP flashes.
2. Press or to change setting ON/OFF.
rappears in place of 0 when duplex is on.
3. Press and hold to store setting.
PTT
The scan direction can be changed at any time by pressing or .

14
Group Scan (GS) Mode
Allows you to monitor a Priority Channel while scanning.
To use GS Mode Scanning, press and hold the key. GS appears on the
display.
GS Scanning checks the Priority channel activity regularly.
If SCAN is deactivated while in an active channel, the uh078sx will
stay on that active channel. If no other channels are active, the
uh078sx will reinstate the starting channel.
If SCAN is deactivated while it is turned to an active channel, the
uh078sx will stay on that active channel. If none of the channels are
active, the uh078sx will reinstate the scan start channel.
If GS Scanning is initiated when there are no channels
programmed in GS memory, an error tone will be heard and
scanning will not start.
If the Priority channel becomes active the radio will stay on that channel for as
long as the signal is present. If the received signal ceases, Priority scanning
continues after 3 seconds.
If scanning stops on a channel which is not a Priority Channel the
uh078sx will continue monitoring the Priority Channel for activity
while listening to the active one.
To deactivate SCAN, press or .
PTT

15
Programming Scan Channels
1. Select which Scanning Mode you wish to use OS or GS Mode.
OS is indicated by the absence of the GS icon.
2. Select the channel you want to store by pressing or .
3. Press . M appears and a short tone beep is heard.
4. To remove the channels from Memory, press once more.
A short tone beep sounds and Mdisappears.
PRIORITY CHANNEL
The Priority Channel feature allows user to monitor one of 40 channels in the
uh078sx , monitoring it every 1.5 secs. during Group Scanning.
Choosing a Priority Channel
DROP-OUT DELAY
While scanning, the uh078sx stops at a busy channel and receives a
transmission. When the received signal is over, the unit will wait for 3 seconds
for the return of the signal, otherwise, the radio resumes scanning.
1. Press four times. PRI and the priority
channel number flashes.
2. Press or to select the desired priority
channel. Channel 10 example is shown.
If OFF is selected then priority channel watch during
group scan will be inactive.
3. Press and hold to store setting.

16
60 RECEIVE CHANNELS
The uh078sx also has 60 receive only channels (CH41 to CH100) which can
be programmed with frequencies ranging from 450-512MHz (in 12.5kHz
steps).
If you know the frequency you may store it manually.
MANUAL PROGRAMMING
Turn power off. Press and hold while turning
power back on. The channel indicator flashes the
lowest available empty channel. You may use the
or to select another channel.
Press . The frequency indicator flashes the
MHz whole number value to be set.
Press or to select the MHz whole
number value (between 450 and 512 MHz).
Press or to move left or right between the
MHz whole number and the MHz decimal value
(in 12.5kHz steps) and press or to
change values.
When finished press , the channel indictor
flashes.
Press or to select the next channel for programming or press and
hold to store setting.
A confirmation tone sounds. The channel is automatically entered into the OS
scan memory.
DELETING A PROGRAMMED RECEIVE CHANNEL
Follow the steps in Manual Programming to enter a frequency for a desired
channel.
Select 0 for the first frequency digit and then press .
Press or to select another channel or press and hold to
exit programming mode.

17
DCS/CTCSS Scan Operation
1. Press to start scanning (GS or OS) mode.
2. Press and hold to change to DCS/CTCSS scan mode.
3. When a signal is sensed on a DCS/CTCSS CH, the uh078sx stops for about 400
msecs (decode time) to decode the DCS/CTCSS code. If there is no code or the
receive code does not match the one programmed for the channel, the uh078sx
resumes scanning.
Channels 5 and 35 are used for emergency channels. DCS/CTCSS
will not operate on these channels.
ADVANCED FEATURES
VOX
MBuilt-in Voice Activated Circuit (VOX) feature enables the user to
transmit automatically by speaking on the microphone of the VOX headset
(not supplied) without pressing the PTT switch.
CTCSS (Continuous Tone Coded Squelch System)
This feature allows you to receive signals only from callers who have selected
the same CTCSS code.
Press or to select the channel you want to set a CTCSS code.
Press and hold . CTCSS will flash.
Press or to select a desired CTCSS code.
Press and hold to store setting. When a code other than oF is selected,
CTCSS and code will display.
DCS (Digitally Coded Squelch)
DCS is a digital extension of CTCSS. It provides 104 extra, digitally coded,
squelch codes that follow after the 38 CTCSS codes. CTCSS 1-38, followed by
DCS 1-99 plus DCS 100-104.
Follow the steps for setting a CTCSS code.
Press until the DCS codes appear.
Press and hold to store setting. DCS and code
will display.
Channels 5 and 35 are used for emergency channels. CTCSS and
DCS will not operate on these channels.

18
VOX feature will not work without the Vox Headset Microphone.
The built in mic of uh078sx is temporarily disabled, however
accidental pressing of will cause the unit to transmit briefly.
To activate VOX
To De-activate VOX
1. Press two times.
VOX and the current VOX setting flashes.
2. Press or to select desired VOX
level (oF, 1 to 9).
3. Press and hold to store setting.
4. Install VOX Headset (not supplied) to uh078sx.
1. Press two times.
2. Press or to select OFF ("oF").
3. Press and hold to store setting.
PTT