Uniden Two Way Radio UH073sx User Manual

uh073sx  
Operating Guide  
To bring outstanding wireless communication products  
to people's lives throughout the world.  
 
CONTENTS  
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  
1
 
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  
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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  
2
 
INCLUDED IN YOUR PACKAGE  
AC Adapter  
(AAD-075S)  
Antenna  
uh073sx  
Drop-in Charger  
(DT073)  
Lithium Battery  
(BP075)  
Beltclip  
Reference Guide/  
Printed Material  
Wrist Strap  
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
 
GETTING STARTED  
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.  
Attaching the Antenna  
Attach the antenna to the uh073sx.  
Be sure the antenna is firmly seated.  
4
 
Attaching the Battery Pack  
Contacts  
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.  
CAUTION!  
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.  
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.  
5
 
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.  
!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.  
6
 
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  
PTT  
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)  
Receive  
5%  
5%  
Stand-by  
90%  
7
 
OPERATION  
See the Controls and Indicators page at the back of this operating guide for  
button and key operations.  
POWER ON/OFF  
To turn the unit ON, rotate the [ON/OFF VOL]  
clockwise. A channel number and battery level  
UH073SX  
should appear on the display.  
To turn the unit OFF, rotate the [ON/OFF VOL]  
knob counter-clockwise. The display will disappear.  
VOLUME  
Rotate the [ON/OFF VOL] knob clockwise or counter-clockwise to adjust  
speaker volume to desired listening level.  
ADJUSTING THE KEY BEEPS  
Your radio emits a beep each time-one of the keys (except for the PTT or mon)  
are pressed.  
dup  
To turn OFF this beep: Press and hold  
To turn ON this beep: Press and hold  
while turning on the radio.  
while turning on the radio.  
dup  
8
 
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  
To turn ON Roger Beep: Press and hold  
while turning on the radio.  
while turning on the radio.  
SELECTING CHANNEL  
Press  
or  
to select the desired channel.  
If you press and hold the  
channel number will scroll rapidly.  
or  
,
9
 
SQUELCH  
The squelch is used to eliminate any annoying background noise when there  
are no signals present.  
Make sure to first select a channel not in use before setting the  
squelch in your uh073sx UHF-CB radio.  
Think of squelch as a gate. Turn [SQ] fully  
Strong Signals  
Medium Signals  
Weak Signals  
Noise  
clockwise. This raises the "Squelch Gate" so high  
that only the very strong signals can get through.  
fully counter clockwise until you hear a  
Turn [SQ]  
hiss. This opens the "Squelch Gate" so that  
everything gets through noise, weak signal, and  
strong signals.  
UH073SX  
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.  
10  
 
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.  
To switch to low power, press 1/3w . LOW  
appears on the LCD.  
1/3w  
To switch back to higher power, press  
again. LOW indicator disappears from the LCD.  
2. Before you transmit, listen for activity on the  
selected channel.  
3. When the channel is clear, press and hold the  
PTT  
to transmit. TX appears on the LCD.  
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.  
4. When you have finished speaking, release the  
PTT  
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.  
11  
 
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.  
Standard Operation without the aid of a Repeater Station  
Normal Simplex Operation  
Transmitting on CH 01  
No signal being  
received  
Operation with the aid of a Repeater  
Repeater Station  
CH 01  
CH 31  
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.  
12  
 
TO OPERATE uh073sx IN DUPLEX MODE  
Eg. CH01 is being used in your area for repeater use.  
dup  
Press  
Press  
momentarily. The DUP icon appears.  
dup  
again to deactivate the duplex operation.  
uh073sx will return to simplex operation.  
Check with your local retailer for available repeaters.  
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.  
scan  
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.  
mem  
To skip the active channel, press  
momentarily. Scanning resumes.  
PTT  
scan  
To deactivate SCAN, press  
or  
.
13  
 
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.  
Group Scan (GS) Mode  
Allows you to monitor a Priority Channel while scanning.  
os/gs  
To use GS Mode Scanning, press the  
display.  
key. GS ic.on appears on the  
GS Scanning checks the Priority channel activity regularly.  
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.  
scan  
PTT  
To deactivate SCAN, press the  
or  
.
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.  
14  
 
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 mem for 1.5 secs. to store. MEM icon appears and two  
short tone beeps are heard.  
mem  
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  
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  
pauses).  
, to select a higher channel (scanning  
or  
b. press  
, to select a lower 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.  
15  
 
ADVANCED FEATURES  
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.  
ctcss  
2. Press and hold  
for 1.5 secs. CTCSS icon blinks.  
to select the desired CTCSS code.  
to save the selected code. CTCSS icon stops blinking.  
3. Press  
4. Press  
or  
ctcss  
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  
scan  
1. Press  
to start scanning (GS or OS) mode.  
2. Press and hold ctcss 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.  
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.  
16  
 
VOX feature will not work without the Vox Headset Microphone.  
The built in mic of uh073sx is temporarily disabled, however  
accidental pressing of PTT will cause the unit to transmit briefly.  
To activate VOX  
vox  
1. Press and hold  
2. Press either  
for 1.5 secs. "VOX" icon blinks.  
or  
within 10 secs. to select the desired  
VOX sensitivity level (9 with the lowest sensitivity to 1 with the  
highest sensitivity).  
vox  
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.  
vox  
2. Press and hold  
for 1.5 secs. until "VOX" blinks.  
3. Press  
4. Press  
repeatedly and until "oF" is displayed.  
vox  
to save the setting. "VOX" icon disappears.  
Changing the VOX sensitivity setting to "oF" without removing the  
microphone will cause the unit to transmit continuously.  
17  
 
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  
icon appears.  
button until it beeps to activate Key Lock.  
lock  
To unlock the keypad, press and hold the  
disappears.  
button again.  
icon  
lock  
When the Key Lock is active, a warning beep will be heard if you  
attempt to press keys. (except for the PTT button)  
18  
 
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 bcl for 1.5 secs. until "BCL" appears on display.  
To De-activate BCL  
Press and hold bcl 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  
mon  
!
!
For brief listening, press  
.
For continuous listening. Press and hold  
mon  
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.  
!
!
mon  
To return to normal receive mode press  
.
19  
 
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.  
20  
 
CTCSS CODES & FREQUENCIES  
21  
 
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  
Service Division  
LIMITED UNIDEN NEW ZEALAND LTD  
Service Division  
345 Princes Highway,  
Rockdale NSW 2216  
Fax (02) 9599 3278  
150 Harris Road, East Tamaki,  
Auckland  
Fax (09) 274 4253  
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.)  
22  
 
CONTROLS & INDICATORS  
1
2
10  
11  
12  
UH073SX  
13  
5
14  
15  
16  
17  
18  
6
7
1/3w  
8
9
3
4
19  
1 Antenna  
11 ON/OFF VOL Knob  
12 Squelch Knob (SQ)  
2 Belt Clip  
13 LCD Display  
3 Battery  
14 Monitor Button (mon)  
4 Battery Release Clip  
15 Open Scan/Group Scan  
(os/gs)/VOX  
5 PTT (Push to Talk) Key  
6 Memory Key (MEM)  
16 Channel Up Button ( )  
7 Scan Button (SCAN)/  
Busy Channel Lock-Out  
Mode (bcl)  
17 Duplex Key (dup)/  
CTCSS Key (ctcss)  
18 Channel Down Button ( )  
19 Speaker  
8 TX Power/Lock Button  
9 Microphone  
10 Speaker MIC (Optional) Jack  
23  
 
LCD Display  
P
O
N
A
M
L
B
C
D
K
J
E
F
G
H
I
A
B
C
D
E
F
G
H
I
Transmit  
1W Power  
J
K
L
CTCSS  
VOX  
Roger Beep  
Duplex Transmit  
Scanning  
Monitor  
M
N
O
P
Battery Level Indicator  
Key Lock  
Memory  
Priority  
Receive  
Busy Channel Lock Out  
Group Scanning  
Channel Numbers  
24  
 
Note:  
25  
 
©2007 Uniden Australia Pty Limited/Uniden New Zealand Limited  
Part Code UTZZ01936ZA(0). Printed in China  
 

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