Uniden UH073sx User Manual

To bring outstanding wireless communication products

to people's lives throughout the world.

Operating Guide

uh073sx

WARNING!

i

WATERPROOF: JIS7

Uniden's uh073sx 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
metre for 30 minutes.
The uh073sx 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.

LITHIUM ION BATTERY PACK WARNING

M This equipment contains a Lithium Ion Battery Pack.
M The Lithium Ion Battery Pack contained in this equipment may

explode if disposed of in a fire.

M Do not short-circuit the Battery Pack.
M Do 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.

M Lithium 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

Optional Accessories ............................. .................................................3

Getting Started

Mounting the Drop-in Charger ................................................................4

Attaching the Antenna .............................................................................4

Attaching the Battery Pack ......................................................................5

Attaching the Beltclip ...............................................................................5

Charging the Battery Pack.......................................................................6

Battery Level Display...............................................................................7

Operation

Power On/Off...........................................................................................8

Volume.....................................................................................................8

Adjusting the Key Beeps .........................................................................8

Roger Beep .............................................................................................9

Selecting Channel ...................................................................................9

Squelch..................................................................................................10

To Transmit and Receive ......................................................................11

Using a Repeater Channel ....................................................................12

To Operate uh073sx 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

Advanced Features ...............................................................................16

CTCSS ............................................................................................16

VOX .................................................................................................16

Power Save ...........................................................................................18

Back Lighting .........................................................................................18

Keypad Lock .........................................................................................18

Busy Channel Lock-out (BCL) ...............................................................19

Monitor ..................................................................................................19

UHF Channel and Frequencies.................................................................20

CTCSS Codes and Frequencies ..............................................................21

Warranty .....................................................................................................22

Controls and Indicators ...........................................................................23

2

INTRODUCTION

The uh073sx 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 uh073sx features, please read this operating guide
carefully before using the unit.

FEATURES

! 40 UHF CB Channels
! 3W Max TX Power
! 1W/3W Switchable TX Power
! Waterproof (meets JIS7 waterproof specifications)
! Rubber Grips/Seal
! 38 Built-in CTCSS codes
! Backlit Keypad & LCD Display
! Duplex Mode
! Open and Group Scan
! Busy Channel Lockout Function
! VOX Function
! Headset Jack
! Keypad Lock
! Battery Type: Lithium-lon Rechargeable
! Low Battery Alert
! Battery strength Indicator
! Auto Battery Save
! Battery Cover with charge contacts
! Roger Beep

3

INCLUDED IN YOUR PACKAGE

Drop-in Charger

(DT073)

Beltclip

Wrist Strap

Lithium Battery

(BP075)

AC Adapter

(AAD-075S)

uh073sx

Antenna

Reference Guide/

Printed Material

Mounting Screws

If any of these items are missing from the box, contact your
Uniden Dealer, immediately.

OPTIONAL ACCESSORIES

M VOX Headset
M External Speaker Mic

3

U

H0

7 S

X

3

4

GETTING STARTED

Attaching the Antenna

Attach the antenna to the uh073sx.
Be sure the antenna is firmly seated.

Mounting the Drop-in Charger

1. Mount the drop-in charger to either a table or wall.

Table:
Attach the drop-in charger using the mounting
screws and washers.

Wall:
Insert the two mounting screws into the wall
keeping the same space as the holes on the
charger.

Place the charger with the screws
through the larger holes then turn the
charger.

2. Plug one end of the AC adapter into the wall outlet
and the other end into the drop-in charger.

When you mount the drop-in charger in a mobile
vehicle, use the optional cigarette lead instead.

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 uh073sx 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

! The charger won’t overcharge the battery pack. When charging is
completed, the charge LED is no longer illuminated.

! Do not transmit when the uh073sx is in the drop-in charger!

! You can monitor incoming calls while the uh073sx is in the

drop-in charger.

4. To take the beltclip off the radio, turn it

and slid it up.

Charging the Battery Pack

Your radio is powered by a specially designed Lithium Ion battery pack.

! Before operating the uh073sx, charge the Lithium Ion battery pack for 5

hours without interruption in the drop-in charger.

1. Place the uh073sx in the drop-in charger.

2. The red LED illuminates and stays ON, until fully
charged.

7

Battery Level Display

The BATTERY icon in the top right hand corner of the screen indicates the

uh073sx 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 : 12 Hours (Typical)
This is based on the following Duty Cycle:

Transmit (Low Power) 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.

To turn OFF this beep: Press and hold while turning on the radio.
To turn ON this beep: Press and hold while turning on the radio.

UH073SX

dup

dup

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.

To turn OFF Roger Beep: Press and hold while turning on the radio.
To turn ON Roger Beep: Press and hold while turning on the radio.

SELECTING CHANNEL

Press or to select the desired channel.

If you press and hold the or ,
channel number will scroll rapidly.

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

uh073sx UHF-CB radio.

UH073SX

11

TO TRANSMIT AND RECEIVE

The uh073sx 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

uh073sx is 3 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.

To switch to low power, press . LOW
appears on the LCD.

To switch back to higher power, press
again. LOW indicator disappears from the LCD.

PTT

PTT

1/3w

1/3w

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

uh073sx 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
uh073sx 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 20.

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 uh073sx IN DUPLEX MODE

Eg. CH01 is being used in your area for repeater use.

SCANNING

The uh073sx 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 icon flashes 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.

Press momentarily. The DUP icon appears.

Press again to deactivate the duplex operation.
uh073sx will return to simplex operation.

PTT

dup

dup

scan

scan

mem

14

Group Scan (GS) Mode

Allows you to monitor a Priority Channel while scanning.

To use GS Mode Scanning, press the key. .

GS icon appears on the

display.

GS Scanning checks the Priority channel activity regularly.

If SCAN is deactivated while in an active channel, the uh073sx will
stay on that active channel. If no other channels are active, the
uh073sx will reinstate the starting channel.

If SCAN is deactivated while it is turned to an active channel, the
uh073sx will stay on that active channel. If none of the channels are
active, the uh073sx will reinstate the Priority 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
uh073sx will continue monitoring the Priority Channel for activity
while listening to the active one.

To deactivate SCAN, press the or .

PTT

os/gs

scan

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 and hold for 1.5 secs. to store. MEM icon appears and two

short tone beeps are heard.

4. To remove the channels from Memory, press and hold for 1.5 secs.

once more. Two short tone beeps are heard and the

MEM icon disappears.

PRIORITY CHANNEL

The Priority Channel feature allows user to monitor one of 40 channels in the
uh073sx, monitoring it every 1.5 secs. during Group Scanning.

Choosing a Priority Channel

DROP-OUT DELAY

While scanning, the uh073sx 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.

The starting channel, when Group Scanning is
initiated, is always the Priority Channel. To change
the priority channel setting while scanning, (eg. PRI
Channel is CH17 (476.825 MHz ));

a. press , to select a higher channel (scanning

pauses).

or

b. press , to select a lower channel.

mem

mem

16

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)

CTCSS is a feature that allows a group to talk to each other without hearing
other users on the same channel.

Programming CTCSS Code

1. Select a desired channel to be used with CTCSS.

2. Press and hold for 1.5 secs. CTCSS icon blinks.

3. Press or to select the desired CTCSS code.

4. Press to save the selected code. CTCSS icon stops blinking.

The uh073sx will return to standby mode after 10 secs. of no
activity. CTCSS code can be programmed on every channel. There
are 38 available CTCSS tone per channel.

CTCSS Scan Operation

1. Press to start scanning (GS or OS) mode.

2. Press and hold to change to CTCSS scan mode.

3. When a signal is sensed on a CTCSS CH, the uh073sx stops for about 400
msecs (decode time) to decode the CTCSS code. If there is no code or the
receive code does not match the one programmed on the unit, the unit
resumes scanning.

Channels 5 and 35 are used for emergency channels. CTCSS will
not operate on these channels.

ctcss

ctcss

ctcss

scan

17

VOX feature will not work without the Vox Headset Microphone.
The built in mic of uh073sx is temporarily disabled, however
accidental pressing of will cause the unit to transmit briefly.

Changing the VOX sensitivity setting to "oF" without removing the
microphone will cause the unit to transmit continuously.

To activate VOX

1. Press and hold for 1.5 secs. "VOX" icon blinks.

2. Press either or within 10 secs. to select the desired
VOX sensitivity level (9 with the lowest sensitivity to 1 with the
highest sensitivity).

3. Press to save the selected level. "VOX" icon stops blinking.

4. Install VOX Headset (not supplied) to uh073sx.

To De-activate VOX

1. Remove VOX Headset from uh073sx.

2. Press and hold for 1.5 secs. until "VOX" blinks.

3. Press repeatedly and until "oF" is displayed.

4. Press to save the setting. "VOX" icon disappears.

PTT

vox

vox

vox

vox

18

POWER SAVE

Battery Save feature extends the battery life by switching the receiver circuit
power ON and OFF. This feature automatically activates during standby mode
(RX mode without signal).

BACK LIGHTING

The Liquid Crystal Display (LCD) and function keys are backlit for easy
viewing at night or in low light situations. The back lighting automatically
switches ON every time a key (except PTT) is pressed. It turns OFF 5 secs
after the last key is pressed.

KEYPAD LOCK

To prevent accidental entries, you can lock the keypad.
Press and hold the button until it beeps to activate Key Lock.
icon appears.

To unlock the keypad, press and hold the button again. icon
disappears.

When the Key Lock is active, a warning beep will be heard if you
attempt to press keys. (except for the PTT button)

lock

lock

19

BUSY CHANNEL LOCK-OUT (BCL)

This feature prevents accidental transmission on a busy channel.
This is recommended on channels where CTCSS is being used. If the
channel is "active" and the signal is coming from a non or different CTCSS
code user the BCL feature will prevent you from transmitting.

To activate BCL

Press and hold for 1.5 secs. until "BCL" appears on display.

To De-activate BCL

Press and hold for 1.5 secs. until "BCL" disappears from the display.

MONITOR

This feature enables users to listen in for weak signals on the current channel
at the press of a button.

To use monitor

! For brief listening, press .
! For continuous listening. Press and hold for 2 sec. A two tone

beep will be heard and the receiver circuit will stay open letting in both
the noise & weak signals.

! Display shows MON and BUSY icons.
! To return to normal receive mode press .

bcl

bcl

mon

mon

mon

20

UHF CHANNEL & FREQUENCIES

Please follow these guidelines for channel use in Australia:

• Channels 05 and 35 are Emergency Channels.

• Channel 11 is a Calling Channel.

• Channels 22 and 23 are for telemetry and telecommand applications and TX

should be avoided on these channels.
General communication is accepted on all other channels with these
guidelines:

• Channel 40 - road channel (Australia).

• Channels 01- 08 (and 31- 38) are repeater channels.• Channels 01- 08 (and 31- 38) are repeater channels.

21

CTCSS CODES & FREQUENCIES

22

WARRANTY

UNIDEN UH073SX UHF CB TRANSCEIVER RADIO

Two Year Limited Warranty

Note: Please keep your sales docket as it provides evidence of warranty.
Warrantor: Uniden Australia Pty Limited ABN 58 001 865 498 Uniden New Zealand Limited
Warranty only available in original country of purchase
Elements of Warranty: Uniden warrants to the original retail owner for the duration of this

warranty, its uh073sx UHF CB Transceiver Radio (hereinafter referred to as the 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 retail owner only, shall terminate and be
of no further effect TWO (2) years after the date of original retail sale. This warranty will
be deemed invalid if the Product is;
(A) Damaged or not maintained as reasonable and necessary,
(B) Modified, altered or used as part of any conversion kits, subassemblies, or any
configurations not sold by Uniden,
(C) Improperly installed,
(D) Repaired by someone other than an authorized Uniden Repair Agent for a defect or
malfunction covered by this warranty,
(E) Used in conjunction with any equipment or parts or as part of a system not
manufactured by Uniden, or
(F) Where the Serial Number label of the product has been removed or damaged beyond
recognition.
Warranty only valid in the country of original retail/sale.
Parts Covered: This warranty covers for TWO (2) years, the Product and included
accessories.
Statement of remedy: In the event that the Product does not conform to this warranty at
any time while this warranty is in effect, the warrantor at its discretion, will repair the
defect or replace the Product and return it to you without charge for parts or service. This
warranty does not provide for reimbursement or payment of incidental or consequential
damages.
This EXPRESS WARRANTY is in addition to and does not in any way affect your rights
under the TRADE PRACTICES ACT 1974 (Cth) (Australia) or the CONSUMER
GUARANTEES ACT (New Zealand).

Procedure for obtaining performance of warranty: In the event that the Product does
not conform to this warranty, the Product should be shipped or delivered, freight prepaid,
with evidence of original purchase, (eg. a copy of the sales docket) to the warrantor at:

UNIDEN AUSTRALIA PTY LIMITED UNIDEN NEW ZEALAND LTD
Service Division Service Division
345 Princes Highway, 150 Harris Road, East Tamaki,
Rockdale NSW 2216 Auckland
Fax [phone] Fax [phone]
www.uniden.com.au www.uniden.co.nz

Customers in other states should ship or deliver the Product freight pre-paid to the
nearest Uniden Authorized Repair Centre. (Contact Uniden for the Warranty Agent
nearest you.)

23

CONTROLS & INDICATORS

1 Antenna

2 Belt Clip

3 Battery

4 Battery Release Clip

5 PTT (Push to Talk) Key

6 Memory Key (MEM)

7 Scan Button (SCAN)/

Busy Channel Lock-Out
Mode (bcl)

8 TX Power/Lock Button

9 Microphone

10 Speaker MIC (Optional) Jack

11 ON/OFF VOL Knob
12 Squelch Knob (SQ)

13 LCD Display

14 Monitor Button (mon)

15 Open Scan/Group Scan

(os/gs)/VOX

16 Channel Up Button ( )

17 Duplex Key (dup)/
CTCSS Key (ctcss)

18 Channel Down Button ( )

19 Speaker

11
12

13
14

10

15
16
17

18

19

6

8

7

9

1

2

3

4

5

UH073SX

1/3w

24

LCD Display

A Transmit
B 1W Power
C Duplex Transmit
D Scanning
E Monitor
F Priority
G Busy Channel Lock Out
H Group Scanning
I Channel Numbers

J CTCSS
K VOX
L Roger Beep

M Battery Level Indicator
N Key Lock
O Memory
P Receive

GI

K

L

M

NOP

B
C
D

A

E

F

J

H

25

Note:

©2007 Uniden Australia Pty Limited/Uniden New Zealand Limited
Part Code UTZZ01936ZA(0). Printed in China