UH-088
Table of contents
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uniden
UHFCB TRANSCEIVER
OWNER'S MANUAL
SUNDOWNER UH-088
SCANNING
Table of Contents
Controls / Indicators / Connectors
...................................................................
3
Controls........................................................................................................3
Indicators......................................................................................................4
Connectors...................................................................................................5
Introduction.......................................................................................................6
Included with your UH-088
...............................................................................
7
Operation..........................................................................................................8
Setting the Squelch......................................................................................8
Selecting a Channel.....................................................................................9
Channel Auto Step.......................................................................................9
Transmitting................................................................................................10
Using Repeater Channels..........................................................................10
Scanning....................................................................................................13
Choosing a Priority Channel
......................................................................
15
Drop-Out Delay..........................................................................................15
Programming Scan Channels....................................................................16
Channel Seeking Operation.......................................................................17
Selective Calling.............................................................................................18
Tone Squelch (Receiver Quieting).............................................................19
Activating the Tone Squelch (Receiver Quieting)
......................................
20
Receiving Calls when in Quiet Mode.........................................................20
Tone Squelch Scanning
............................................................................
21
SELCALL Programming
.................................................................................
22
Service............................................................................................................23
Care and Maintenance
...................................................................................
24
Notice.........................................................................................................24
Preventive Maintenance
............................................................................
24
T roubleshooting
........................................................................................
24
Memory Backup.........................................................................................24
UHF CB Channel Information.........................................................................25
SIMPLEX Operating Mode.........................................................................25
DUPLEX Operating Mode..........................................................................26
Specifications..................................................................................................27
General.......................................................................................................27
Measurement Conditions...........................................................................28
T ransmitter Section...................................................................................28
Receiver Section........................................................................................28
SELCALL................................................................................................... 29
Warranty......................................................................................................... 30
Controls / Indicators / Connectors
1.
2.
3.
4.
5.
6.
7.
8.
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) and DUP.
UP/DOWN CHANNEL SELECTOR - These controls are used to select the desired
communication channel.
ON/OFF, VOLUME & SQUELCH CONTROLS
ON/OFF & Volume Control (Centre Knob)
Turns the UH-088 power ON or OFF and adjusts the volume.
Squelch Control (Outer Ring)
Eliminates background noise in the absence of an incoming signal.
PUSH-TO-TALK (PTT) SWITCH - Press to transmit and release to receive.
TONE CALL CONTROL BUTTON - Press to transmit SELCALL codes, it functions
on condition that SELCALL option is installed.
DUPLEX Control
Press this button momentarily to choose semi-duplex operation for Channels 1
through 8.
OPEN SCAN/GROUP SCAN CONTROL (OS/GS) - Switches operation between
OPEN SCAN and GROUP SCAN Mode.
SCAN CONTROL (SCAN) - Press to activate Normal OS/GS scanning or press
and hold to enable Seek Mode OS/GS Scanning.
9. MEMORY CONTROL (MEM) - Places channel numbers into the memory scan list
(OS orGS).
10. TONE SQUELCH CONTROL (TSQ) - Controls Tone Squelched operation (quiet
Mode) on condition that SELCALL option is installed.
Indicators
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DUP ■■ GS-'
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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. Frequency Indicator - Shows the frequency of the current seiected channel.
15. RECEIVE SIGNAL / RF LEVEL Indicator (S / RF) - Indicates the relative signal
strength level when receiving (S) or the relative transmit power (RF) when
transmitting.
16. DUPLEX Indicator (DUP) - The DUP icon appears when duplex operation is
selected.
17. 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.
18. CALL Indicator (CAL) - The CAL icon appears when the UH-088 radio is called
using SELCALL. It also appears when SELCALL codes are being transmitted.
19. MEMORY Indicator (MEM) - MEM appears when the displayed channel is
programmed either in GS or OS Memory.
20. TONE SQUELCH Indicator (TSQ) - The TSQ icon wili appear when the selected
channel is set to operate in Quiet Mode, or flashes when the radio is called using
SELCALL.
21. 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.
Connectors
Front Panel
22. MICROPHONE SOCKET
The microphone plug is inserted into this socket.
Back Panel
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EXT. SP.
POWER
@—
■
23. 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.
24. ANTENNA CONNECTOR - Connect the Antenna here using a PL259 type
connector.
25. DC POWER CORD - DC power is connected to the transceiver through this jack. A
power cord is supplied with the transceiver.
Introduction
The Uniden UH-088 UHF two way radio is designed to provide you with years of
trouble free service. Its rugged components and materials are capable of withstanding
harsh environments. The unit may be mounted in several convenient locations using
the universal mounting bracket.
You can be confident in your choice of radio equipment because the UH-088 offers,
Wide Liquid Crystal Display, Back-lit Control buttons, complete coverage of the UHF
CB Frequency Band, and much more.
We are certain that you will enjoy your UH-088. Please read this operating guide
carefully to ensure you gain the optimum performance of the unit.
General Features
• Full Coverage of the UHF CB Band
• 5 Watt Max. Transmitter
• External Speaker Jack
• Full Frequency Display
• Wide Liquid Crystal Display
• Back-lit Control Buttons
• Duplex Capability
• Open Scanning
• Group Scanning / Priority Channel Monitoring
• Channel Seek Mode
• Push Button Channel Control
• Front Fire Speaker
• SELCALL (Optional)
Specifications, features, and availability of optional Accessories are all subject to
change without prior notice.
Included with your UH-088
UH-088 Owner's Manual
Mounting Bracket, Knobs,
Rubber Washer, Washer Stars
and Screws
Microphone Hanger, Screws
and Washers
Warranty Registration Sheet
Operation
Setting the Squelch
1. To turn the unit ON, rotate VOLUME clockwise.
Adjust volume to a comfortable level.
y
©
Note: You must select a channel which is not in use before setting the SQUELCH
control on your radio.
2. Think of the Squelch control as a gate. If you turn SQUELCH fully clockwise it
raises the "Squelch Gate” so high that no signals get through.
Strong Sigrtals -
Medium Signals -
Weak Siffla -
Nolee-
3. If you turn the SQUELCH fully counterclockwise it lowers the “Squelch Gate" so
that everything gets through - noise, weak signals, and strong signals.
4v 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.
Strong Signals -
Medium Signets -
Weak Signals •
1
Selecting a Channel
1. When you turn on the UH-088, the last channel used will appear on the LCD display,
eg. CH01
2a. Press ▲ to select a higher channel.
- or-
2b. Press ▼ to select a lower channel.
Channel Auto Step
To quickly change channels, press and hold ▼ or A .
Note: A short tone sounds when you press either T or A and the channel changes.
Another tone sounds when Channel Auto step begins.
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