Uniden uh710sx User manual

uh710sx
uh710sx-2
uh720sx
uh720sx-2

2
UNIDEN Model uh710sx/uh720sx UHF CB Radio
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.
It is illegal to operate this radio transceiver outside of Aus-
tralia and New Zealand.
Do not plug in any AC Adapter plug into the EXT. SPKR/MIC
(SM-065) phone jack.
WARNING!

3
UNIDEN Model uh710sx/uh720sx UHF CB Radio
CONTENTS
Introduction
Features .....................................................................................................4
Controls & Indicators........................................................................................5
Included in Your uh710sx/uh720sx Pack.........................................................7
Getting Started
Battery Installation......................................................................................8
Belt Clip ......................................................................................................8
Charging Batteries Using the Desktop Charger ............................................9
Charging Batteries Using the Cigarette Lead Charger ..................................9
Battery Life .................................................................................................9
Battery Level Display ................................................................................10
Low Battery Alert ......................................................................................11
Operation
Power On/Off ............................................................................................12
Volume .....................................................................................................12
Setting the Squelch...................................................................................12
Selecting a Channel ..................................................................................13
To Transmit and Receive ...........................................................................13
To Operate in Duplex Mode (Repeaters).....................................................14
Transmit Power Select ..............................................................................15
Scanning...................................................................................................15
Open Scan (OS) Mode .......................................................................16
Group Scan(GS) Mode .......................................................................17
Priority Channel Watch During Group Scan ........................................18
Programming Scan Channels ............................................................18
Drop-Out Delay .................................................................................18
Programming the Instant Priority Channel .................................................19
Recalling the Instant Channel....................................................................19
Dual Watch ...............................................................................................19
Monitor .....................................................................................................19
CTCSS ......................................................................................................20
DCS .........................................................................................................20
VOX .........................................................................................................21
Room Monitor ...........................................................................................21
Busy Channel Lockout...............................................................................22
Call Tone...................................................................................................23
Roger Beep...............................................................................................23
Key Beep ..................................................................................................23
Battery Save .............................................................................................24
Keypad Lock .............................................................................................24
Back Lighting............................................................................................24
UHF CB Channels & Frequencies....................................................................25
CTCSS & DCS Code List ..................................................................................26
Warranty..........................................................................................................27

4
UNIDEN Model uh710sx/uh720sx UHF CB Radio
INTRODUCTION
The uh710sx/uh720sx UHF CB radio 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 uh710sx/uh720sx’s features, please read this operating
guide carefully before using the unit.
Radio images in this manual show uh720sx, however the
display indicators and keys are the same for the uh710sx.
Features
• Transmit38UHF-CBchannels*
Receive 40 UHF-CB channels
• TXoutputpower:
uh710sx - 0.1W / 0.5W / 1.0W
uh720sx - 0.1W / 0.5W / 2.0W
• Upto10km+range**
• LCDdisplay
• Batterylevelindicator
• LowBatteryAlert
• AABatteryCompatible
(Rechargeable or optional Alkaline)
• BatteryPowerSaveOn/Off
• Desktopcharger
• DCchargejack
• +12Vto+24VDCCigarettelead
charger (optional for uh710sx)
• Channelselect
• BacklitLCDandkeypad:
uh710sx - orange
uh720sx - white
• Monitor
• Roommonitor
• InstantChannelProgramming
• OneTouchInstantChannelRecall
• Dualwatch
• GroupScanwithPriorityCHWatch
• OpenScan
• OS/GSScanseparately
• ChannelMemory
• Selectablescandirectionupward
or downward
• Duplexcapability
• 5LevelVOX(VoiceActivated
Function)
• 5LevelRoomMonitortransmission
threshold
• Selectable3squelchposition
(”1” = threshold, “2” = middle, “3”
= tight)
• BusyCHLock-OutFunction
• 5differentCALLtone
• Rogerbeep
• KeybeepOn/Off
• Keypadlock
• 38BuiltinCTCSS(ContinuousTone
Coded Squelch System) codes and
104 DCS (Digital Coded Squelch
System) codes are selectable
• VolumeandPowerOn/OFFControl
Knob
• ExternalSpeaker/Microphone
capability
* See UHF-CB Channels & Frequencies, page 25 for available channels.
** Range varies depending on the environment. 10km + range is noted in a flat open
environment @ 2W transmit power. 6km + range is noted in a flat open
environment @ 1W transmit power.

5
UNIDEN Model uh710sx/uh720sx UHF CB Radio
CONTROLS & INDICATORS
CONTROLS & INDICATORS
1. EXT.SPKR/MICJack
2. On/Off Volume Knob
3. LCD Display
4. CigaretteLeadChargerJack
5. Menu/EnterButton
6. Instant Button
7. Memory On/Off &
DCS/CTCSS Button
8. Microphone
9. Up Button
10. Down Button
11. Speaker
12. Transmit Power
Select/Keylock Button
13. Dual Watch/Monitor Button
14. Scan/Call Tone Transmit Button
15. Belt Clip Catch
16. PTT (Push-to-talk) Button
17. Battery Cover

6
UNIDEN Model uh710sx/uh720sx UHF CB Radio
A. Memory
B. Transmit
C. Scan
D. Busy
E. Squelch
F. Busy Channel Lockout
G. Dual Watch
H. Battery Level Indicator
I. Transmission Power Level Indicator (High/Low)
J. RoomMonitor
K. Key Lock
L. DCS/CTCSS code
M. DCS/CTCSS Indicator
N. Priority
O. Voice Activation
P. Group Scan
Q. Channel Number
CONTROLS & INDICATORS
K
L
N
O
QM
P

7
UNIDEN Model uh710sx/uh720sx UHF CB Radio
INCLUDED IN YOUR uh710sx/uh720sx PACK
uh710sx uh710sx-2 uh720sx uh720sx-2
Radio 1x uh710sx 2x uh710sx 1x uh720sx 2x uh720sx
Rechargeable
Batteries (AA NIMH) 3x 700mAh 6x 700mAh 3x 1800mAh 6x
1800mAh
Beltclip 1x 2x 1x 2x
Earpiece Mic
(EM-065) 1x 2x 1x 2x
External Speaker
Mic (SM-065) - - 1x 2x
Desktop charger 1x single 1x twin 1x single 1x twin
Cigarette lead
charger (CK-720) - - 1x 2x
AC Adaptor
(AAD-065S(M)) 1x 1x 1x 1x
Owner's Manual 1x 1x 1x 1x
If any of these items are missing from the box, contact your
Uniden Dealer.
Optional Accessories
• +12Vto+24VDCCigaretteLeadCharger(CK-720)
• VoiceActivated(VOX)Headset(VM-041)
• LeatherCase(LC-720)
• CommercialQualitySpeakerMicrophone(SM-060CQ)
• CommercialQualityAirTube(EM-064CQ)
• CommercialQualityReferee’sKit(RK-060CQ)
• CommercialQualityRubberCarHook(EM-060CQ)

8
UNIDEN Model uh710sx/uh720sx UHF CB Radio
GETTING STARTED
Battery installation
Your uh710sx/uh720sx pack includes 3 AA rechargeable NiMH batteries to
power the unit. You must install and then charge the batteries for 15 hrs
before use. The uh710sx/uh720sx can also use 3 AA Alkaline batteries.
Do not mix old and new batteries to avoid damage to the unit.
Toinstallbatteries:
1. Make sure your radio is OFF.
2. Remove the battery compartment door
by pressing down then sliding
the cover away from the radio.
3. Install the batteries to the
battery compartment.
4. Replace the battery
compartment door.
Belt Clip
Toattachthebeltclip:
Slide the belt clip into the catch until it snaps into place.
Toremovethebeltclip:
Pinch and hold the belt clip and latch and then slide the belt clip up and out
of the catch.

9
UNIDEN Model uh710sx/uh720sx UHF CB Radio
GETTING STARTED
Charging Batteries Using The Desktop Charger
1. Connect the AC adaptor to the charging cradle.
2. Place the battery installed unit with keys facing forward onto the
 chargingcradletochargethebatteries.ThechargeLEDlightstoindicate
charging.
Warning Notice!
Use only the supplied
AAD-065S(M) power adaptor or
supplied cigarette lead adaptor
(uh720sx pack only) if
rechargeable batteries will be
used in the radio.
Battery charging times vary.
A longer time is required
to charge higher capacity
batteries.
Charging Batteries Using The Cigarette Lead Charger
(supplied with uh720sx packs only)
1. ConnectthecigaretteleadchargerintotheDCchargejackoftheradio.
2. Connecttheadaptorendtoacigarettejack(cigaretteleadchargerinput
 voltage:+12Vto+24VDC).ThechargeLEDlightstoindicatecharging.
Rechargeable NiMH
Batteries
Charging Time
1800mAh 9 hrs
700mAh 4 hrs
Battery Life
Dutycycle:TX5%-RX5%-STANDBY90%
 50hrstyp.(AASIZE1800mAhALKALINE)
 50hrstyp.(AASIZE1800mAhNi-MH)
 20hrstyp.(AASIZE700mAhNi-MH)
Conditionmeasured:
Volume Level at rated power (50mW @ 16 ohms)
Transmit Level; LO
Standby; Battery Save ON
uh710sx/uh720sx
single charger is
shown.

10
UNIDEN Model uh710sx/uh720sx UHF CB Radio
GETTING STARTED
Battery Level Display
The icon in the upper right hand corner of the screen indicates the
uh710sx/uh720sx current battery voltage level at all times. The battery level
isdisplayedin4levels:
LEVEL 3
Battery100%full
LEVEL 2
Battery approx
30%capacity
LEVEL 1
Battery approx
15%capacity
LEVEL 0
AlmostEmpty
When SW is pressed at Level 0, the PTT Error Tone will be
heard and the channel number and the battery icon will flash.

11
UNIDEN Model uh710sx/uh720sx UHF CB Radio
GETTING STARTED
Low Battery Alert
The LCD on your radio shows a battery
meter in the upper right hand corner.
icon indicates a fully powered
unit.
The Low Battery Alert beep will sound
when the battery level drops to Level 1.
If you continue to use the radio at Level 1 the Low Battery Alert beep will
sound at approximately 15 minutes intervals until the radio is turned off or
the batteries are recharged to a higher level.
If the battery level falls to Level 0 (flashing empty) the LCD display will turn
off after 30sec. An error tone will sound if any key is pressed.
Recharge the NiMH batteries or replace the Alkaline batteries
immediately to continue using the radio.

12
UNIDEN Model uh710sx/uh720sx UHF CB Radio
OPERATION
Power On/Off
To turn the unit
ON, rotate the [ON/OFF
VOLUME] knob clockwise until
a “click” is heard. A channel
number and battery level
should appear on the display.
To turn the unit OFF, rotate the
[ON/OFF VOLUME] knob coun-
ter-clockwise until a “click” is
heard to save the battery life.
The display will disappear.
Volume
Rotate the [ON/OFF VOLUME] knob
clockwise to increase the volume,
counter-clockwise to decrease the volume.
Setting The Squelch
The squelch is used to eliminate any annoying background noise when there
are no signals present.
1. Press
ENT
MENU once.
The current setting will flash.
2. Press or to select desired squelch setting.
 SQL-1:Maxsensitivity(Threshold)
 SQL-2:Medsensitivity
 SQL-3:Minsensitivity(Tight)
3. Press and hold
ENT
MENU to save setting and exit.
If SQL-3 is selected SQT will flash continuously.

13
UNIDEN Model uh710sx/uh720sx UHF CB Radio
button
OPERATION
Selecting A Channel
Press or to select the desired
channel.
If you press and hold
or the channel
numbers will scroll
rapidly.
To Transmit And Receive
The radio uses the 40 UHF-CB Channels.
For your reference a list of the available
channels and corresponding frequencies
is printed on page 25. (Channels 22 and
23 are for telemetry and telecommand
applications.
Transmit is inhibited on these channels).
1. The maximum RF transmit
power of the uh720sx is 2 Watts and
uh710sx is 1 Watt.
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.
Hold the radio with microphone approximately
5 cm 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 and listen for a
response then TX disappears on the LCD. BUSY appears while receiving
a signal.

14
UNIDEN Model uh710sx/uh720sx UHF CB Radio
OPERATION
To Operate In Duplex Mode (Repeaters)
The Duplex function enables you to access local repeater stations.
You can only activate Duplex on CH01-CH08.
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.
Eg.CH01isbeingusedinyourareaforrepeateruse.
1. Press
ENT
MENU twice.
dP will flash.
2. Press or to change the
selection.
rappears when duplex is selected.
3. Press and hold
ENT
MENU to save and exit.
Contact your retailer for a list of repeaters available
in your area.
OperationwiththeaidofaRepeater

15
UNIDEN Model uh710sx/uh720sx UHF CB Radio
OPERATION
Transmit Power Select
Theuh720sxhasthreetransmitpowerlevels:2Watt,0.5Wattand0.1Watt.
Theuh710sxhasthreetransmitpowerlevels:1Watt,0.5Wattand0.1Watt.
Tochangeyourtransmitpowerlevel:
1. Press while in the ’power middle level’ to change to
’power high level.’
2. Press while in the ’power high level’ to change to the
’power low level.’
3. Press while in the ’power low level’ to change to
’power middle level.’
TX Power Low TX Power Middle TX Power High
Transmitting on a higher level will use more Battery power but
will enable you to transmit further.
Scanning
The uh710sx/uh720sx has two types of scanning; Open Scanning (OS) and
Group Scanning (GS), OS Scan searches all the channels and frequencies in
its memory continuously. GS Scan is similar to OS scan but has the added
ability to monitor the priority channel every 1.5 seconds.
Scanning allows you to search for active
channels programmed in the OS or GS memory.
To initiate scanning,
1. Assuming the unit is on CH01
when switched on.
2. Press
CALL
SCAN and scanning starts.
SCAN flashes during scanning.

16
UNIDEN Model uh710sx/uh720sx UHF CB Radio
OPERATION
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
customise the channels by following the steps on programming
Scan Channels on page 18.
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 or . Scanning resumes.
To deactivate SCAN, press or CALL
SCAN .
1. If SCAN is deactivated while in an active channel, the radio
will stay on that active channel. If no other channels are
active, the radio will reinstate the starting channel.
2.IfOSScanningisinitiatedwhentherearenochannels
programmedinOSmemory,anerrortonewillbeheardand
scanning will not start.

17
UNIDEN Model uh710sx/uh720sx UHF CB Radio
OPERATION
Group Scan(GS) Mode
To change between OS and GS scan;
1. Press
ENT
MENU four times.
GS setting ON or OFF will flash.
2. Press or to change
the selection.
3. Press and hold
ENT
MENU to save
and exit.
To initiate scanning,
1. When
CALL
SCAN is pressed during
Group Scan Mode, SCN will blink
and Group Scan Scanning begins.
2. To deactivate GS scanning, press or
CALL
SCAN
.
1. If SCAN is deactivated while it is tuned to an active
channel, the uh710sx/uh720sx will stay on that active
channel. If none of the channels re- active, the
radio will reinstate the Scan start channel.
2. 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.

18
UNIDEN Model uh710sx/uh720sx UHF CB Radio
OPERATION
Priority Channel Watch During Group Scan
The feature allows user to monitor the Instant Priority channel (see page 19)
every 1.5 secs during Group Scanning. The Priority Channel can also be moni-
tored with Dual Watch, see page 19.
1. Press
ENT
MENU three times. PRI
setting flashes.
2. Press or to change the
selection.
3. Press and hold
ENT
MENU to
save and exit.
Programming Scan Channels
1. Select which Scanning Mode you wish to use on the channel 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 CTCSS
MEM
to store.
Micon appears.
4. To remove the channel from Memory, Press
CTCSS
MEM to remove.
Micon disappears.
Drop-Out Delay
While scanning, the radio stops at a busy channel and receives a signal. When
the received signal is over, the unit will wait for 3 seconds for the return of the
signal, otherwise, the radio resumes scanning.

19
UNIDEN Model uh710sx/uh720sx UHF CB Radio
OPERATION
Programming the Instant Priority Channel
Select the Channel you want to store as the Instant Priority Channel by
pressing or .
Press and hold
INST
for 3 seconds to program the channel. PRI icon appears.
Recalling the Instant Channel
Momentarily press the
INST
button to return to the Instant Channel.
Dual Watch
When Dual Watch function is active, priority channel is watched every 1.5
seconds.
Press DUAL
MON
to activate or deactivate Dual Watch. DUAL appears on the display
when activated.
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continuouslistening.
Press and hold DUAL
MON
.
A double tone beep will be
heard and the receiver circuit
will stay open, letting in both
the noise & weak signals.
• DisplayshowsBUSY.
• Toreturntonormalreceive
mode press and hold DUAL
MON
.

20
UNIDEN Model uh710sx/uh720sx UHF CB Radio
OPERATION
CTCSS
CTCSS is a feature that allows a group
to talk to each other without hearing
other users on the same channel.
1. Select desired channel.
2. Press and hold CTCSS
MEM .The
current DCS/CTCSS setting
flashes.
3. Press or to select
desired CTCSS code.
4. To select off code, press and hold
CTCSS
MEM . oF flashes.
5. Press CTCSS
MEM to save and exit.
DCS
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 1-104.
Follow the steps for changing CTCSS
code but select DCS code as desired.
Channels 05 and 35 are used for emergency channels. CTCSS
and DCS will not operate on these two channels.