Uniden Two Way Radio UH088SX CB User Manual

UNIDEN uh088sx

CB RADIO

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UNIDEN UHF CB Transceiver

Contents

Controls/Indicators/Connections

Controls.......................................................................................

Indicators....................................................................................

Connections................................................................................

Introduction

Features.......................................................................................

PreventativeMaintenance............................................................

Troubleshooting..........................................................................

MemoryBackup..........................................................................

Layout.........................................................................................

Includedwithyouruh088sx CBradio................................................

Operation

SettingtheSquelch.......................................................................

SelectingaChannel...................................................................... 10

Transmitting................................................................................ 10

UsingRepeaterChannels............................................................. 10

Operatingtheuh088sxinDuplexMode........................................ 11

Scanning...................................................................................... 11

OpenScan(OS)Mode.................................................................. 11

GroupScan(GS)Mode................................................................. 12

ChoosingaPriorityChannel......................................................... 13

DropOutDelay............................................................................. 13

ProgrammingScanChannels....................................................... 14

ChannelSeekingOperation.......................................................... 15

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UNIDEN UHF CB Transceiver

Contents

ContinuousToneCodedSquelchSystem(CTCSS)............................... 16

SelectiveCalling(OptionalSelcallPCBRequired)

Outline........................................................................................ 17

SelectiveCalling(SELCALL)......................................................... 17

ReceiverQuieting(ToneSquelch)................................................ 17

CallAlarm.................................................................................... 17

ToneSquelchScanning................................................................ 17

ToneCalling................................................................................. 17

GroupCallingCapability............................................................... 17

Tables

FM-CBFrequencyList.................................................................. 18

CTCSSToneList............................................................................ 18

Warranty............................................................................................. 19

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UNIDEN UHF CB Transceiver

Controls/Indicators/Connections

uh088sx

CONTROLS

119

1. LIQUID CRYSTAL DISPLAY (LCD) PANEL - Indicators for TX, CAL, MEM, TSQ, GS (OS), SCN

PRI, Channel Number, Frequency, Signal Strength Level (S), Transmit Power Level (RF),CTCSS Code

and DUP.

2. UP/DOWN CHANNEL SELECTOR -These controls are used to select the desired

communication channel.

3. ON/OFF, VOLUME & SQUELCH CONTROLS

ON/OFF & Volume Control (Centre Knob)

Turns the uh088sx power ON or OFF and adjusts the volume.

Squelch Control (Outer Ring)

Eliminates background noise in the absence of an incoming spiral.

4. PUSH-TO-TALK (PTT) - SWITCH - Press to transmit and release to receive.

5. TONE CALL CONTROL BUTTON - Press to transmit SELCALL codes, it functions on condition that

SELCALL option is installed.

6. DUPLEX Control

Press this button momentarily to choose semi-duplex opeartion for channels 1 through 8.

7. OPEN SCAN/GROUP SCAN CONTROL (OS/GS)- Switches operation between OPEN SCAN and

GROUP SCAN Mode.

8. SCAN CONTROL (SCAN) - Press to activate Normal OS/GS scanning or press and hold to enable Seek Mode

OS/GS Scanning.

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UNIDEN UHF CB Transceiver

Controls/Indicators/Connections

9. MEMORY CONTROL (MEM) - Places channel numbers into the memory scan list (OS or GS).

10. TONE SQUELCH CONTROL (TSQ) - Controls Tone Squelched operation (quiet Mode) on condition that

SELCALL option is installed.

10 Secondary function: 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.

21 22

INDICATORS

121

11. Channel Indicator - Indicates the channel number currently selected. On TX SELCALL usage the Channel

Indicator becomes a Memory location indicator.

12. Scan Indicator (SCN) - SCN icon appears when normal Scan mode is activated. When Seek mode Scanning is

selected the SCN icon blinks.

13. Priority Indicator (PRI) - Indicates that priority channel is active when continuously lit or flashes when it is

regularly being checked for activity while GS scanning.

14. Continuous Tone Coded Squelch System (CTCSS) Code - Indicates the CTCSS code selected for the

current channel.

15. Frequency Indicator - Shows the frequency of the current selected channel.

16. RECEIVE SIGNAL/ RF LEVEL indicator (S/RF) - Indicates the relative signal strength level when receiving (S)

or the relative transmit power (RF) when transmitting.

17. DUPLEX Indicator (DUP) - The DUP icon appears when duplex operation is selected.

18. TRANSMIT indicator (TX) - TX appears when the PTT button on the microphone is pressed and the radio is

transmitting. The RF icon also appears at this time.

19. TONE SQUELCH indicator (TSQ) - The TSQ icon will appear when the selected channel is set to operate in

Quiet Mode, or flashes when the radio is called using SELCALL.

20. CALL Indicator (CAL) - The CAL icon appears when the uh088sx radio is called using SELCALL. It also

appears when SELCALL codes are being transmitted.

21. MEMORY Indicator (MEM) - MEM appears when the displayed channel is programmed either in GS or

OS Memory.

22. GROUP SCAN Indicator (GS) - The GS icon appears when Group Scan Mode is activated. Open scan is

indicated by the absence of the GS icon.

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UNIDEN UHF CB Transceiver

Controls/Indicators/Connections

CONNECTIONS

FRONT PANEL

23. MICROPHONE SOCKET

The microphone plug is inserted into this socket.

BACK PANEL

24. EXTERNAL SPEAKER JACK - used for remote receiver monitoring. When the external speaker is connected, the

internal speaker is automatically disconnected. The connecting wire must use a 3.5mm miniature plug only.

25. ANTENNA CONNECTOR - Connect the Antenna here using a standard UHF (PL259) type connector.

26. DC POWER CORD - DC Power is connected to the transceiver through this jack. A power cord is supplied with the

transceiver.

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UNIDEN UHF CB Transceiver

Introduction

The Uniden uh088sx is designed to provide you with years of trouble free service. It's rugged components and

materials are capable of withstanding harsh environments.

We are certain that you will enjoy your uh088sx. Please read this operating Manual carefully to ensure you gain the

optimum performance of the unit.

Features

Transmit & Receive FM 40CH (UHF - CB, TX Power 5w)

7 Segments LCD

CTCSS function

Tone Squelch (Selcall) Capability

Duplex Capability (from CH01 - CH08 per channel)

Open Scan/Group Scan

Variable Squelch Level adjust

Volume Control with power ON/Off Switch

Preventative Maintenance

The following system checks should be made every six to twelve months:

Check the standing Wave Ratio (SWR)

Inspect the tightness of all electrical connections.

Inspect the antenna coaxial cable for wear or breaks on the shielding.

Inspect the tightness of all screws and all other mounting hardware.

Troubleshooting

Should the unit malfunction or perform poorly, follow these procedures:

Check the power cord and fuse.

If there is trouble with receiving...

Check the VOLUME control setting. Be sure the SQUELCH is adjusted properly. Possibly the radio is

over squelched.

If there is trouble with transmitting...

Check that the transmission line (coaxial cable) is securely connected to the ANTENNA connector.

Check that the antenna is fully extended for proper operation.

Check that all transmission line (coaxial cable) connections are secure and free of corrosion.

Memory Backup

A built in EEPROM protects the channels stored in the uh088sx memory after the DC power cable is

disconnected

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UNIDEN UHF CB Transceiver

Introduction

LAYOUT

Front Panel Layout

Microphone Layout

PTT

Tone Call

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UNIDEN UHF CB Transceiver

Included with your uh088sx CB radio

uh088sx

UNIDEN

RADIO

uh088sx Owners Manual

Microphone

Mounting Bracket, Knobs,

Rubber washer, Washer Stars

and Screws.

Microphone Hanger Screws

and washers

DC Power Cord with fuse

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UNIDEN UHF CB Transceiver

Operation

Setting the Squelch

1. To turn the unit ON, rotate volume clockwise.

Adjust volume to a comfortable level.

You must select a

channel which is

not in use before

setting the SQUELCH

control.(see p.10)

2. Think of the Squelch control as a gate. If you turn SQUELCH

fully clockwise it raises the "Squelch Gate so

that no signals get through.

3. If you turn the SQUELCH fully counter clockwise, it lowers the

"Squelch Gate" so that everything gets through - noise,

weak signals and strong signals.

4. To set the "Squelch Gate" to the desired level, turn SQUELCH

counterclockwise until you hear noise. Then turn the SQUELCH

clockwise just until the noise stops. Now only strong signals get through.

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UNIDEN UHF CB Transceiver

Operation

SELECTING A CHANNEL

Press

button to select a channel

PTT

TRANSMITTING

Select the desired channel. Press the Microphone's PTT button, hold it approx

7cm from your mouth and speak normally into the microphone.

The icon will light. Release the PTT button to end

the transmission and listen for a reply.

USING REPEATER CHANNELS

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 that partially blocks your

transmitted signal, the probability of another radio receiving the signal is very slim. Hills, tall buildings, metallic

structures, ... etc. tend to act as a screen between radios.

The Signal coming from your radio is received by the Repeater Station and then retransmitted at the same time

on another channel. This operation is called "Duplexing".

For example,

CH01 on Duplex Mode will Receive on CH 01 but Transmit on CH31

CH02 on Duplex Mode will Receive on CH 02 but Transmit on CH32 etc ....

If you transmit on CH01 Duplex mode, you are actually transmitting on CH31, the repeater station down-converts

your signal and retransmits on CH01.

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UNIDEN UHF CB Transceiver

Operation

Operating the uh088sx in Duplex Mode

For this example we are adopting CH01 as the channel

being used in your area for repeater use.

Press

to switch Duplex On. The duplex icon DUP appears.

If Duplex is not required - press again to switch Duplex off.

Only channels 01 - 08 are available for Duplex

Check with your local Retailer to

determine if there is a Repeater in your

area.

Scanning

The uh088sx has a scanning feature that allows you to

search for active channels automatically.

Furthermore, the uh088sx is designed to have two types

of scanning; Open Scanning (OS) and Group Scanning

(GS), to give you flexibility and allow you to use the radio

more effectively. Press

The scan icon SCN appears.

and scanning starts.

Open Scan (OS) Mode

Allows continuous scanning of channels stored in the Open Scan memory. If an active channel is found, scanning

will stop on that channel.

This example shows CH40 active.

If the received signal ceases, the unit will wait 3 seconds for the signal

to return, otherwise scanning resumes.

To skip the active channel, press momentarily. Scanning resumes.

To deactivate scan, press while scanning

or the PTT button on the microphone.

If SCAN is deactivated while on an

active channel, the uh088sx will stay

on that active channel. If no channels

are active, the uh088sx will reinstate

the starting channel.

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UNIDEN UHF CB Transceiver

Operation

Group Scan (GS) Mode

Allows you to monitor a priority channel while scanning.

To use GS Mode Scanning, press the

key.

TOGGLES

GS icon appears on the display. OS Mode is indicated by the

absence of the GS icon.

GS Scanning checks the priority channel activity regularly.

If the Priority channel becomes active the radio will stay on

that channel for as long as the signal is active.

If the received signal ceases, the unit will wait 3 seconds

for the signal to return, otherwise scanning resumes.

If scanning stops on a channel which is not a Priority channel,

uh088sx will continue monitoring the priority channel for

activity while listening to the active one.

eg CH40 becomes active.

TOGGLES

If SCAN is deactivated while it is turned to an active channel, the uh088sx will stay on

that active channel. If none of the channels are active, the uh088sx will reinstate the

starting channel.

If GS is initiated when there are no channels programmed in GS memory, an error tone

will be heard and scanning will not start (see programming Scan Channels - below).

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UNIDEN UHF CB Transceiver

Operation

Choosing a Priority Channel

The starting channel, when Group Scanning is initiated, is always the priority channel.

Changing the PRI channel setting while scanning

eg: PRI Channel is CH17 (476.825 Mhz)

press

, to select a higher channel (scanning pauses)

- or -

b. press

, to select a lower channel

Drop-out delay

While scanning, the uh088sx stops at a busy channel and receives a transmission. When the received signal is over,

the unit will wait for three seconds for the return of the signal, otherwise, the radio resumes scanning.

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UNIDEN UHF CB Transceiver

Operation

Programming Scan Channels

Select which Scanning Mode you

wish to use on the channel.

OS or GS Mode

2. Select the channel you want to store.

3. Press and hold

for 1.5sec. to store.

MEM icon appears and a short tone

beep is heard.

4. To remove the channel form memory, press and hold for 1.5 sec. once more.

Two successive beeps are heard and the MEM icon disappears.

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UNIDEN UHF CB Transceiver

Operation

Channel Seeking Operation

Unlike normal scanning, CHANNEL SEEK is used more often when checking for active channels.

If a signal is detected, while seeking, the uh088sx will tune to that signal for 4 seconds only and the

resumes Seeking Operation.

Changing from SCAN to SEEK Mode Operation.

Firstly, activate scan mode by pressing

2. Press and hold until a 'beep' is heard.

The SCN icon starts to flash.

3. If an active channel is detected the uh088sx will stop on that

channel for 4 seconds. (eg CH17)

4. After 4 seconds, the uh088sx will start seeking again for

active channels.

5. If you find the channel interesting, simply press either

the PTT switch or to stop the operation

before the 4 second timer elapses.

When

is pressed again SEEK is still the mode of operation.

To change back to SCAN, while SEEKING, press and hold

until a beep is heard. The SCN icon stops flashing.

SEEK checks the same channel stored in SCAN

memory. Thus, you can Seek either in OS or GS Mode.

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UNIDEN UHF CB Transceiver

Operation

Continuous Tone Coded Squelch System (CTCSS)

This feature allows signals to be received only from callers who have selected the same CTCSS code.

Press

to select the desired channel to use CTCSS.

for 2 seconds. CTCSS code flashes.

to select the desired CTCSS code 01 - 38.

once to store the new setting.

Press and hold

Press

To turn CTCSS OFF please follow the above steps but select the desired CTCSS code oF (before code 01).

Channels 05 and 35 are Emergency Channels.

CTCSS cannot be selected on these channels.

If a button is not pressed within 10

seconds the uh088sx will automatically

exit Select Mode.

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UNIDEN UHF CB Transceiver

Selective Calling (Optional Selcall PCB Required)

Outline

Selective Calling (SELCALL) is a special Sequential Tone Squelch System that allows the user to

receive/transmit calls selectively from/to an individual or group, on a shared busy channel.

The uh088sx has an Optional Selective Calling system.

Exceptional features, like Receiver Quieting, Tone Squelch Scanning, Tone and Group Calling make the uh088sx

superior to any transceivers in its class.

Receiver Quieting (Tone Squelch)

When activated, it automatically mutes the receiver audio circuit of the radio.

It will stay in this ‘Quiet’ mode as long as the SELCALL tone code (SELCALL ID) required to open the muting

circuit is not received.

Call Alarm

When a received code matches to your SELCALL ID, an alarm (CA Alert) will be emitted informing you that a

caller is on the channel.

Tone Squelch Scanning

Scans only tone squelched Channels.

Tone Calling

Allows you to selectively call another radio.

Group Calling Capability

Transmits and Responds to Group Calls.

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UNIDEN UHF CB Transceiver

Tables

FM - CB Frequency List - Australia & New Zealand

Simplex Mode

Transmit / Receive

Frequency (MHz)

Simplex Mode

Transmit / Receive

Frequency (MHz)

476.425

Duplex Mode

Transmit

CH No.

Frequency (MHz)

477.175 CH31

477.200 CH32

477.225 CH33

477.250 CH34

477.275 CH35

477.300 CH36

477.325 CH37

477.350 CH38

476.925

476.950

476.975

477.000

477.025

477.050

477.075

477.100

477.125

477.150

477.175

477.200

477.225

477.250

477.275

477.300

477.325

477.350

477.375

477.400

476.450

476.475

476.500

476.525

476.550

476.575

476.600

476.625

476.650

476.675

476.700

476.725

476.750

476.775

476.800

476.825

476.850

476.875

476.900

Note: Channel 05 and 35 are Emergency Channels and Channel 11 is a calling channel

CTCSS TONE List

Tone

No.

Tone

Frequency (Hz)

Tone

Frequency (Hz)

Tone

No.

Tone

Frequency (Hz)

Tone

No.

00 (’oF’)

OFF

67.0

71.9

74.4

77.0

79.7

82.5

85.4

88.5

91.5

94.8

97.4

100.0

162.2

167.9

173.8

179.9

186.2

192.8

203.5

210.7

218.1

225.7

233.6

241.8

250.3

103.5

107.2

110.9

114.8

118.8

123.0

127.3

131.8

136.5

141.3

146.2

151.4

156.7

NOTE: Channel 05 and 35 are not CT CSS programmable

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UNIDEN UHF CB Transceiver

Warranty

ONE YEAR LIMITED WARRANTY

IMPORTANT: Evidence of the original purchase is required for warranty service.

WARRANTOR: Uniden New Zealand Limited. Uniden Australia Pty Ltd. ACN 001 865 498

ELEMENTS OF WARRANTY: Uniden warrants to the original retail owner for the duration of this

warranty its uh088sx (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 is only valid in the original

country of purchase and shall be of no further effect 12 months 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 authorised Uniden Repair Agent for a defect or malfunction covered

by this warranty, (E) Used in conjunction with any equipment or parts or as a part of a system

not manufactured by Uniden. (F) Only available in the original country of sale.

PARTS COVERED: This warranty covers for one (1) year, the uh088sx transceiver only. All

accessories (Mounting bracket, Microphone etc.) are covered for 90 days only.

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 and service. THIS WARRANTY

DOES NOT COVER OR PROVIDE FOR THE REIMBURSEMENT OR PAYMENT OF INCIDENTAL

OR CONSEQUENTIAL DAMAGES. THIS GUARANTEE IS IN ADDITION TO AND DOES NOT

IN ANY WAY AFFECT YOUR RIGHTS UNDER THE CONSUMER GUARANTEE ACT.

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 (e.g. a copy of the sales docket) to the warrantor at:

UNIDEN AUSTRALIA PTY LIMITED

SERVICE DIVISION

UNIDEN NEW ZEALAND LIMITED

SERVICE DIVISION

345 Princes Highway,

Rockdale,

NSW 2216,

150 Harris Road,

East Tamaki,

Auckland,

AUSTRALIA

Fax: (02) 9599 3278

www.uniden.com.au

NEW ZEALAND

Fax: (09) 274 4253

www.uniden.co.nz

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2004 Uniden Australia Pty Limited / Uniden New Zealand Limited

Printed in the in China

UTZZ01924ZZ

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