Uniden UH-100 User Manual

uniden UHF CB TFWNSCEtVER

OWNER'S MANUAL

SUNDOWNER UH-100

SCANNING

Table of Contents

Controls / Indicators / Connectors

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

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

Connectors......................................................................

Introduction..........................................................................

Included with your UH-100

Operation.............................................................................

Setting the Squelch

Selecting a Channel........................................................

Channel Auto Step..........................................................

Transmitting....................................................................

Using Repeater Channels

Scanning

Choosing a Priority Channel............................................

Drop-Out Delay

Programming Scan Channels.........................................

Channel Seeking Operation ..........................................

Voice Scrambler

LCD Backlight Level Control................................................

Selective Calling
This is UH-100 Calling

Making a Call..................................................................

Acknowledgment Tone

10 Selcatl ID Memory

Transmitting ID from Memory

Receiving Call

Replying using SELCALL

Group Calling..................................................................

Tone Squelch {Receiver Quieting)..................................

Activating the Tone Squelch (Receiver Quieting)

Receiving Calls when in Quiet Mode..............................

Tone Squelch Scanning..................................................

SELCALL Advance Programming........................................

Radio ID Programming...................................................

Tone Period Programming..............................................

Lead-In Delay Programming...........................................

Lead-In Tone Programming............................................

Alarm Mode Programming..............................................

Group Call Mode Programming

Caller ID Decoding..........................................................

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6

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9
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Service...........................................................................................................43

Care and Maintenance..................................................................................44

Notice....................................................................................................................44

Preventive Maintenance.......................................................................................44

Troubleshooting................................................................................................... 44

Memory Backup................................................................................................... 44

UHF CB Channel Information.......................................................................45

SIMPLEX Operating Mode....................................................................................45

DUPLEX Operating Mode.....................................................................................46

Specifications................................................................................................47

General................................................................................................................. 47

Measurement Conditions......................................................................................49

Transmitter Section ..............................................................................................48

Receiver Section...................................................................................................49

SELCALL..............................................................................................................49

Warranty........................................................................................................50

Controls / Indicators / Connectors

LIQUID CRYSTAL DISPLAY (LCD) PANEL - Indicators for TX, CAL, MEM, TSQ,

1.

GS (OS), SCN, PRI, Channel Number, Frequency (SELCALL Code), Signal
Strength Level (S), Transmit Power Level (RF), DUP and Scrambler.

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

2.

communication channel.

3.

ON/OFF, VOLUME & SQUELCH CONTROLS
ON/OFF & Volume Control (Centre Knob)

Turns the UH-100 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.

4.
TONE CALL CONTROL BUTTON - Press to transmit SELCALL codes, also used

5.
to access TX SELCALL ID programming.

DUPLEX / LCD BACKLIGHT Control

6.
a. Duplex Operation

Press this button momentarily to choose semi-duplex operation for Channels 1
through 8,

b, LCD Backlight Control

Press and hold this button to change the LCD backlight level BRIGHT ■ DIM - OFF.

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

7.

OPEN SCAN and GROUP SCAN Mode

8. SCAN CONTROL (SCN) - 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 or GS).

10. AUDIO SCRAMBLER / TONE SQUELCH CONTROL - Controls access to audio
scrambling feature and Tone Squelched operation (Quiet Mode).

Indicators

fO CAL MEM

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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 / SELCALL ID Indicator - Shows the frequency of the current selected
channel. The Frequency Indicator changes to SELCALL ID display when using the
SELCALL feature.

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 UFI-100 radio is called
using SELCALL, It also appears when SELCALL codes are being transmitted.

19. SCRAMBLER Indicator (f) - The f icon appears when the Voice scrambler is
activated.

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

21. 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.

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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Connectors

Front Panel

23. MICROPHONE SOCKET
The microphone plug is inserted into this socket,

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 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.

Introduction

The Uniden UH-100 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-100 offers
built-in SELCALL, Wide Liquid Crystal Display, Back-lit Control buttons, complete
coverage of fhe UHF CB Frequency Band, and much more.

We are certain that you will enjoy your UH-100. 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

• Built - In SELCALL Feature

• External Speaker Jack

• Full Frequency Display

• Wide Liquid Crystal Display

• Back-lit Control Buttons

• Multi LCD Backlight Level

• Duplex Capability

• Built-In Voice Scrambler

• Open Scanning

• Group Scanning / Priority Channel Monitoring

• Channel Seek Mode

• Push Button Channel Control

• Front Fire Speaker

SELCALL Features

• 10 TX SELCALL ID Memory Locations

• User Programmable

• Caller Identification

• Full ID Display

• Last ID Re-SEND

• Return Call

• Acknowledge Tone

• Tone Squelch Mode (Receiver Quieting)

• Tone Squelched Scanning

• Compatible with most SELCALL equipped radios in the market.

Specifications, features, and availability of optional Accessories are all subject to change
without prior notice.

Included with your UH-100

Microphone Hanger, Screws

and Washers

Mounting Bracket, Knobs,

Rubber Washer, Washer Stars

and Screws

Warranty Registration Sheet

Operation

Setting the Squelch

1. To turn the unit ON, rotate VOLUME clockwise.
Adjust volume to a comfortable level.

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 fuliy clockwise it

raises the "Squelch Gate" so high that no signals get through.

Strong Signals -

Mediu^n Signals-

Weak Signals -

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3. If you turn the SQUELCH fully counterclockwise it lowers the "Squelch Gate" so
that everything gets through - noise, weak signais, and strong signals.

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Strong Signals^

Medium Signals -

Weak Signals -

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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.

Stroni; SigiralS“

Mediuin Signsils -

Weak Signals -

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Selecting a Channel

1, When you turn on the UH-100, the last channel used will appear on the LCD display,

eg. CHOI

2a. Press A to select a higher channel.

- or -

2b. Press ▼ to select a lower channel.

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Channel Auto Step

To quickly change channels, press and hold ▼ or a . This changes channels at 10
channels per second.

Note: A short tone sounds when you press either T or A and the channel changes.

Another tone sounds when Channel Auto step begins.

Transmitting

The UH*100 transmits on 40 UHF CB channels. For your reference, a listing of all the
available channels is printed on the back cover.

1. Select the desired channel,
eg. CHOt

2. To transmit, press the PIT switch to activate the transmitter.

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Note: Hold the microphone 2-4 inches from your mouth and slightly to one side so that

your voice does not project directly into the microphone. Speak at a normal

voice level. Never raise your voice or shout into the microphone.

3, Release the PTT Switch, to end the transmission and listen for the reply.

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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 (i.e. valley) that partially blocks
your transmitted signal, the probability of another radio receiving the signal is very
slim. Valleys, tall buildings, metallic structures, ... etc, tend to act as a screen between
radios.

Standard Operation without
the aid of a repeater Station

Operation with the aid ot a repeater

The Signal coming from your radio is received by the Repeater Station and then re
transmitted at the same time on another channel. This operation is called "Duplexing",

Your UH-100 is designed with the capability to access and use repeater stations.
Channels 01 through 08 have the option to operate in Duplex Mode. When any of

these channels are set to operate in duplex mode during transmission, the UH-100
automatically sends the signal at a frequency 30 channels above the original. After
transmitting, the radio reverts back to its original operating frequency.

For example,

CHOI 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 CHOI Duplex mode, you are actually transmitting on CH31, the

repeater station down-converts your signal and retransmits on CHOI.

To operate UH-100 in Duplex Mode,

eg. CH01 is being used in your area for

repeater use.

Press DUPLEX momentarily.

The DUP icon appears.

11

Whenever you press the PTT Switch the UH-100 frequency display changes to CH31
frequency.

Press DUPLEX again to deactivate the Duplex Operation. UH-100 will return to Simplex
operation.

12

Scanning

The UH-100 has a scanning feature that allows you to search for active channels
automatically.

Furthermore, the UH-100 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.

To initiate scanning.

1. Assuming the unit is on CHI 7 when switched on.

2. Press SCN and Scanning starts.

1. 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.

Example. CH40 becomes active.
If the received signal ceases, the unit will wait for at

least 3 seconds for the signal to return, otherwise

scanning resumes.

To skip the active channel, press MEM momentarily.

Scanning resumes.

To deactivate SCAN, press the SCN switch or the PTT Button.

Note: If SCAN is deactivated white in an active channel, the UH-100 will stay on

that active channel. If no other channels are active, the UH-100 will reinstate
the starting channel.

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2. Group Scan (GS) Mode

Allows you to monitor a Priority Channel while scanning.
To use GS Mode Scanning, press the OS / GS key,

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 present. If
the received signal ceases, Priority scanning continues
after 3 seconds.

If scanning stops on a channel which is not a Priority
Channel, UH-100 will continue monitoring the Priority
Channel for activity while listening to the active one.

eg. CH40 becomes active.

To deactivate SCAN, press the SCN key or the PIT Switch.

Note: //SCAN is deaci/Vafed whi/e it is tuned at an active channel, the UH-lOO will

stay on that active channel. If none of the channels are active, the
UH-100 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.

14

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)

a, press A , to select a higher channel {scanning pauses)

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- or -

b. press ▼ , to select a lower channel

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Drop-Out Delay

While scanning, the UH-100 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, othenwise, the radio resumes scanning.

15

Programming Scan Channels

1. Select which Scanning Mode you
wish to use on the channel,

OS or GS Mode

Note: OS is indicated by the

absence of the GS icon.

2. Select the channel you want to

store.

3. Press and hold MEM for 1.5 sec. to
store. MEM icon appears and a
short tone beep is heard.

4. To remove the channel from Memory, press and hold MEM for 1.5 sec. once more.
Two successive beeps are heard and the MEM icon disappears.

16

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 UH-100 will tune to that signal for 4 seconds
only and then resumes Seeking Operation.

Changing from SCAN to SEEK Mode operation.

1. Firstly, activate SCAN mode.

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2. Press and hold SCN until a "beep" is heard. The SCN
icon starts to flash.

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3. If an active channel is detected the UH-100 will stop on
that channel for 4 seconds, (eg. CH17)

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4. After 4 seconds, the UH-100 will start seeking again
for active channels.

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5. If you find the channel interesting, simply press either
the PTT switch or the SCN key to stop the operation
before the 4 second timer elapses.

When SCN Is pressed again SEEK is still the mode of operation.

To change back to SCAN, while SEEKING, press and hold
SCN until a beep is heard. The SCN icon stops flashing.

Note: SEEK checks the same channel stored in SCAN memory. Thus, you can Seek

either in OS or GS Mode.

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Voice Scrambler

UH-100 has a built-in scrambler / be-scrambfer circuit.

The Voice Scrambler feature prevents users, without the necessary descrambler
equipment, "understanding" your conversation. This feature is NOT operable on CH01

through CH08, CH31 through CH36, and CH11, and will only work between units
with the voice scrambier feature compatible with the Uniden UH-100.

To activate the audio scrambler, select an available charnel for audio scrambling,
eg. OHIO

Press SCRAMBLE, the f icon appears.

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Transmit in a normal fashion.

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To deactivate press SCRAMBLE again. The Lightning icon disappears.

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Be "Polite" when using this feature. Use this feature when the communication
iink Is already established and only when needed.

Note: The Audio scrambler and the SELCALL functions cannot be operated

simuitaneously.

18

LCD Backlight Level Control

The LCD backlight level can be changed te BRIGHT, DIM, or OFF.
To change the level simply press and hold the DUPLEX key for more than 1,5 seconds.

To change further, press and hold DUPLEX again.

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Selective Calling

When you listen to UHF CB you will hear all the conversations going on, which can
become annoying at times. Ideally you need a system that alerts you when the signal
is from someone you wish to communicate with.

You want your radio to be SELECTIVE about the people you talk to!
That's what the Uniden UH-100 offers, with SELECTIVE CALLING, commonly known

as SELCALL. It lets you know that the people you want to talk to are calling.
To achieve this each radio must have a SELCALL ID.
This SELCALL ID acts as a "Phone Number" and your radio as a "Mobile Phone".

Everybody in your group must have a different "Phone Number" that only your group
members should know. If one of your members dials your "Phone Number", when
reached successfully, your "Mobile Phone" of course will "Ring", and your caller will
hear a "Ringing Tone”,

This "Ring" is actually a CALL Alarm, and the "Ringing Tone" is an Acknowledgment
Tone. Any user tuned to your UHF CB channel will hear the conversation

UH'100 Selcall Features

• User Programmable UH-100 SELCALL ID

• 10 Transmit SELCALL ID Memory

• Full ID Display

• Caller Identification

• Acknowledgment Tone

• Auto Caller ID Load and Reply (Return Call)

• Last ID Resend

• Tone Squelched Channel Scanning

• All SELCALL Parameters are User Programmable

• Receiver Quieting (Tone Squelched Mode)

Woie; You only give your Selcall code to people who you want to be able to get in

touch with. Likewise you need to know their Selcall codes to be able to coniacf
them. Other users in your SELCALL family may not be using Uniden radios, the
Uniden UH-100 can be programmed to have full compaifi)f//iy with other brands.
Please read the selcall advance programing section of this manual for guidance.

The Audio scrambler and the SELCALL functions cannot be operated

simultaneously.

20

This isUH-100 Calling.

The UH-100 is shipped from the factory with a SELCALL ID setting of "00000". Refer to
the Advance Section on page 32 for details on howto change/customize your UH-100
Selcall ID.

Making a Call

To make a call, press and release the TONE CALL switch on the microphone.

The last used Selcall ID will be displayed.

(If you have never used the Selcall feature

00000 will appear.)

Press the MEM switch on the UH-100 and

the last digit of the Selcall ID will flash. This

indicates that you can now start to enter

the Transmit Selcall ID code.

The flashing digit is the one you can program.
To select the digit you wish to change use the / SCRAMBLE or ► / DUPLEX to move
the position.

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To change the flashing digit use the Channel A and t buttons.

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When completed, press and hold the TONE CALL button to send.

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This ID will be stored in the Last ID Transmitted buffer. Every time the Tone call
button is pressed the last ID will be shown. To transmit the ID again, simply press and
hold the Tone Call button once more.

When the called radio is successfully reached an Acknowledgment Tone will be received.

Acknowledgment Tone

The UH-100 automatically acknowledges all the Selective Calls it receives, thereby
advising the caller that it has been contacted successfully.

Three low tone beeps characterise the UH-100 Acknowledgment Tone.

22

10 Selcall ID Memory

The UH-100 has a special 10 memory location, which stores the Seical) identification

{ID) codes of users in your group. This section tells you how to program the Selcall ID
memory.

Press and release the TONE CALL switch on the microphone.

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The last used Selcall ID will be displayed,
(If you have never used the Selcall feature
00000 will appear.)

Use the channel A and ▼ buttons to select the Transmit Selcall Memory location number.

Press the MEM switch on the UH-100
and the last digit of the Selcall ID will
flash. This indicates that you can now
start to enter the Transmit Selcall ID
code.

The flashing digit is the one you can program.
To select the digit you wish to change use the < (SCRAMBLE or ► / DUPLEX to move
the position.

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When completed, press MEM to store.
You repeat this process to store Transmit Selcalt ID's into the remaining memory

locations of your UH-100,

Transmitting ID from Memory

The procedure is very much the same as explained in making a call.
Press the TONE CALL button.

The LCD Frequency display changes to
show the last ID transmitted.

Using the channel * or ▼ , select the desired memory location.

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Once located, simply press and hold the TONE CALL button to send.

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The ID that is sent becomes the Last ID Transmitted. Every time the TONE CALL
button is pressed this ID will be shown. To send the ID again, simply press and hold the
TONE CALL button.

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Receiving a Call

When a Call is received from another UH-100 or Compatible radio,

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the UH-100 will automatically transmit an acknowledgment tone.

Beep. Beep, Beep |

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An audible alarm is emitted and the Call icon and the Caller’s ID will appear on the
display.

Answer the call in a normal manner.

Note: If the radio is left unattended, the Caller ID and the CAL icon will stay on the

display. The Call alarm can be configured to continuously beep when
unanswered. (Please refer to Selcall Advance Programming on page 32)

Replying using SELCALL

When a call is received from another UH-100, or compatible radio, the UH-100
automatically decodes and displays the caller ID.

26

If the radio was left unattended you can cal! back later by simply pressing and holding
the TONE CALL button.

This action automatically loads and transmits the ID on display, and saves you time on
programming.

If the received call does not have the Caller ID information, a dash (-) line will be shown
in lieu of the Caller ID,

Returning a call in this case will cause the radio to emit an error tone and a "no id"

message will be displayed.

27

Group Calling

Mosi Selcal) users will have several members in their group. It is possible that everyone
in the group needs to be alerted at the same time, for example when an emergency
situation occurs. Calling them one by one can be Inconvenient and time consuming. It
is possible to create a special code that will be recognized by every radio in the group

when transmitted. Your UH-100 incorporates this feature known as Group Calling.

The UH-100 has the capability of being owner programmed to Group Call within groups
of 2 to 10,11 to 100, 101 to 1000 or 1001 to 10000 radios.

While you were setting Selcall ID numbers to be sent, you may have noticed the letter
"A" appeared on the LCD from time to time. This letter has a special application. When
added in your code to be transmitted, it tells the UH-100 that the call is a Group Call In
nature. Note that you have to follow a special format to make a Group Call,

To make a Group Call work all members of the group must have Selcall ID's in a
numerical sequence, e.g. group of 10 users may have the following Selcall ID's:

23450 23455
23451 23456
23452 23457

23453 23458
23454 23459

To be able to Group Call all the other 9 radios in your group of

10 you would need to transmit the code 2345A.

ALL radios with 2345 as the first 4 numbers of their ID Code will be alerted.
Using the first four digits followed by "A" is suitable for calling groups of 2 to 10 radios

as shown above.
The first 3 digits followed by "AA" is for 11 to 100 radios, (eg 234AA)
The first 2 digits followed by "AAA" is for 101 to 1000 radios, (eg 23AAA)
The first digit followed by "A" is for 101 to 10000 radios, (eg 2AAAA)
You can still call any of the individual members of your group, without calling all the

others, by programming the individual’s Selcall ID into a separate memory location,
e.g. You have your group call code (2345A) in memory location 5, You want to be able
to call unit 23453 outside the group so you store 23453 in memory location 3.

The UH-100 differentiates group calls and individual calls by emitting different alarm

beeps.
For Group Calls the alarm beep will be a low tone and for individual tone calls the beep

will be a high tone.

Note: When you transmit a Group Cat! you wi// not receive acknow/edgment tones

from the other radios as you normally do with individual tone calls.

28

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Tone squelch (Receiver Quieting)

Receiver Quieting, or Tone Squelch (TSQ), is actually SELCALL in action. The UH­100 receiver is muted and you cannot hear any signals until the mute is disengaged by
reception of your Selcall code.

Refer to page 8 for explanation of how the squelch system works.

The Squelch discussed previously "screens" the received signal level, however in tone

squelch mode, the squelch monitors the signal for your ID.

1. The Tone Squelch Control acts as an electronic lock. Activating the Tone squelch
closes this lock.
Regardless of how strong the received signal is, if it does not have the required
"electronic key" the gate will remain closed.

2. If the received signal contains the required key (which is your Radio ID), this
electronic lock will open.

The muting circuit is then deactivated on your radio and advises you that a call has
been received.

Activating the Tone Squelch (Receiver Quieting)

1. Select the channel you want to put into quiet mode using the channel selector
switches.

2. Press the SCRAMBLE/TSQ button for about 1.5 seconds. One beep is heard and
the TSQ indicator appears on the display. This channel is now programmed to
operate in Quiet Mode.

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When a quiet mode channel is selected the TSQ indicator appears on the display. The
microphone PTT is disabled on that channel until a signal with your Selcall ID is received.
All other channels can be used as normal.

3. To deactivate any channel in quiet mode first select the relevant channel.
Press the SCRAMBLE/TSQ button for about 1.5 seconds. Two beeps are heard

and the TSQ indicator disappears from the display.

Receiving Calls when in Quiet Mode

The UH-100 will respond in the same way in quiet mode as when it is called while in
normal mode.

When the call is left unanswered, however, the radio automatically resumes the quiet
condition. {The auto - quiet mode function can be switched ON or OFF, please refer to
the Selcall Advance Programming section on page 32)

30

Tone Squelch Scanning

You may wish to limit your scanning activities so the UH-100 will only scan the channels
you have pre-arranged to use with your SELCALL family. These are the channels you

have programmed as TSQ or quiet mode.

Tone Squelch Scanning applies this function.
To activate this feature firstly initiate SCAN.

Then press SCRAMBLE/TSQ

When a call is received the unitwill pause scanning and an audible alarm is emitted.

If left unanswered the radio wilt resume Tone Squelch scanning. The UH-100 can be
programmed to deactivate scan automatically when a selective call is received. Please
refer to the Selcall Advance Programming Section.

To deactivate Tone Squelch Scanning, simply press SCN key.

31

SELCALL Advance Programming

The Sundowner UH-100 radio is fully user programmable. It gives you the freedom to
select your own radio ID, configure the radio's response when a call is received, change
SELCALL parameters for compatibility with other UHF Radio brands, plus much more.

Please read the following procedure carefully to understand the full SELCALL capability

of this radio. This will enable you to utilize the SELCALL to maximum effect.
Since the following items are NOT frequently changed, and are characterized as highly

significant, a special accessing procedure has been developed to prevent accidental
changes or programming.

To access the SELCALL Parameter Programming mode.

First, switch OFF the radio.
Press and hold the OS/GS key and switch the radio ON simultaneously.

The radio will switch ON in the programming Mode.

32

The illustration below outlines the user programmable parameter menu.
Once inside the programming mode, use the a or t to scroll on the menu.
Press MEM to select. Change the setting using the a or t key. Press MEM again to

store and exit.

Programming Start

Press and Hold the OS/GS Key again OR switch the radio OFF then ON to exit this
mode.

33

Radio ID Programming

To program your own Radio ID, periorm the following procedure.
From the main menu, using the a or v key, go to the Radio ID Programming Menu.

(If you have never changed this parameter, the Radio ID 00000 will be displayed)

Press the MEM key to start programing. The last digit of the Radio ID will flash. This

indicates that you can now enter your new Radio ID.
The flashing digit is the one you can change. To select another digit, use the or ► to

move position.

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To change the flashing digit value, use the a or ▼ key.
When completed, press the MEM and the new Radio ID will be stored into the memory.

34

Tone Period Programming

Tone Period is the duration of one tone in a SELCALL iD sequence. The setting of this

parameter depends on the appiication. On iong distance communications, where the

signai strength of the transmitted information is greatiy reduced and affected by noise,

it is advisabie to use a ionger tone period. A iong tone period gives the decoder more

time and information to check and evaiuate the code,

important Note: Ensure aii radios in your group use the same tone period setting,

otherwise, you wiii not be abie to seiectiveiy caii one another.

To change the Tone Period setting.

From the main menu, using the a or ▼ key, go to the Tone Period Programming Menu,
(if you have never changed the Tone Period, the defauit setting is 40 mSec)

Press the MEM key to start programming. The Tone Period on dispiay wii! fiash. This
indicates that you can now change the setting.

You can seiect either, 40, 70, 100
or 20 mSec.

When compieted, press the MEM to store
memory.

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35

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Lead - In Delay Programming

Lead-in Delay is a SELCALL transmission parameter that "wakes-up" and helps the
receiver of the other radio to lock onto the incoming signal. Each time a SELCALL ID
is transmitted, the Lead-in Delay attaches itself to the beginning of the code sequence
and causes the transmitter to be on for a longer period prior to the code transmission.

This makes for a stronger communication link between the transmitter and the other

receiver.

The major advantage of having the Lead-in Delay longer is when selectively catling
another radio via a repeater station. A long Lead-in Delay helps to stabilize both the

communication link from your radio to the repeater station and from the repeater
station to the other radio.

To change the Lead - In Delay setting.

From the main menu, using the a or ▼ key, go to the Lead - in Delay Programming
Menu. (If you have never changed the Lead - In delay duration, the default setting is
500 mSec)

Press the MEM key to start programming. The Lead In Delay on display will flash. This

indicates that you can now change the setting.

36

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a

J

To change, use the a or t key. You can select either 500, 1000, 2000, 3000
or 4000 mSec.

When completed, press the MEM key. The new Lead - In Delay stops flashing and is
stored in the radio memory.

To return to normal operation, press and hold the OS/GS key (or about 1.5 seconds,
or, press either the a or t key to go to the next programmable parameter.

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Lead - In Tone Programming

The Lead-In Tone when programmed, rides on the "Lead in Delay". When transmitting
a Selcall ID a continuous tone will be heard for the duration of the Lead In Delay.

The main function of the Lead - In Tone is to increase the probability of contact between
radios when Tone Squelch Scanning.

Unlike normal scanning, TSQ Scanning monitors the detected carrier for the presence
of Lead - In tone. Without it, TSQ scanning resumes.

If a Lead - In Tone is present the UH-100 will lock onto that signal and wait for the
SELCALL )D.

You can program the UH-100 to took onto a particular Lead - In Tone. This feature
enables the radio to immediately recognize whether the signal present is intended for
your group.

i.e. If you are using Tone 1, your radio during TSQ scanning will lock only onto signal
with Tone 1 as its Lead - In tone.

Note: Should you wish your radio to lock onto any transmission regardless of Lead-In

tone type present select "Tone

L LI

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37

To change the Lead-In Tone setting.

From the main menu, using the a or ▼ key, go to the Lead-In Tone Programming
Menu. (If you have never changed the Lead-In delay duration the default setting is
Tone 1)

Press the MEM key to start programming.

The Lead In Tone on display will flash. This indicates that you can now change the

setting.

To change, use the a or ▼ key. You can select any Tones 1 to 9, A to F or

When completed, press the MEM key. The new Lead-In Tone stops flashing and will

be stored in the radio memory.
To return to normal operation, press and hold the OS/GS key for about 1.5 seconds,

or press either the a or ▼ key to go to the next programmable parameter.

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Alarm Mode Programming

The UH-100 has two types of alarm set-up.

Set-up 1: Auto-Resume (Default setting)

When a Call is received in,

1} Normal Mode

The alarm will sound only for 10 seconds

ii) Tone Squelch Mode

The quieting circuit will open for 20 seconds. If left unanswered Tone Squelch
condition resumes. The alarm will sound for 10 seconds only.

ill} Normal Mode / Tone Squelch Scanning

The alarm will sound only for 10 seconds.

If left unanswered, scanning RESUMES after 20 seconds. The CAL icon will be
continuously lit on the display indicating that a call has been received. To look for
the called channel, cancel SCAN and use the

display a CAL when found.

Set-up 2: Continuous Alarm

When a call is received in,

i) Normal Mode

The radio emits a successive beeping alarm for 20 seconds then two successive

beeps every four seconds continuously unless answered.

ii) Tone Squelch Mode

The Tone Squelch condition is cancelled.

The radio emits a successive beeping alarm for 20 seconds then two successive

beeps every four seconds continuously unless answered.

iii) Normal Mode / Tone Squelch Scanning

Scanning is cancelled.

The radio emits a successive beeping alarm for 20 seconds then two successive

beeps every four seconds continuously unless answered.

a or ▼ key. The called channel will

Note: Should you wish your radio to cancel scanning when a SELCALL is received,

select the continuous alarm mode.

39

To change the Alarm Mode setting.

From the main menu, using the a or y key, go to the Alarm Mode Programming Menu.

{If you have never changed the Alarm setting, the default setting is Auto)

Press the MEM key to start programming. The Alarm setting on display will flash. This

indicates that you can now change the setting.

To change, use the a or ▼ key.
When completed, press the MEM key. The new Alarm setting stops flashing and will be

stored in the radio memory.
To return to normal operation, press and hold the OS/GS key for about 1.5 seconds,

or press either the a or t key to go to the next programmable parameter.

40

Group Call Mode Programming

There are two ways the Group Call Code is transmiitted.
The Uniden UH-100 can be programmed to accept either format.

Group 1 setting recognizes a group call transmitted with equal tone period,
i.e. Calling 100 radios, with a tone period setting of 40 mSec.

1 2 1 3

40 m S e c — H

40 m S e c — ► *—

A

Group 2 setting recognizes a group call transmitted with the first Group Call Tone period
extended by 3 times the original tone period setting (this is also the default setting).

1 2

40mSec—H

3 A

120mSec

To change the Group Call setting.

From the main menu, using the a or » key, go
to the Group Call Mode Programming Menu. (If
you have never changed the Group Call setting
before, its default is Group 2)

Press the MEM key to start programming. The
Alarm setting on display will flash. This indicates
that you can now change the setting.

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To change, use the a or t key.
When completed, press the MEM key. The new

Group Call setting stops flashing and will be
stored in the radio memory.

To return to normal operation, press and hold
the OS/GS key for about 1.5 seconds,
or press either the a or ▼ key to go to the next
programmable parameter.

41

Caller ID Decoding

The Sundowner UH-100 radio uses a total of 10 digits when making a Selective Call.
The first five digit is the ID of the radio to be called and the last five digit is its own ID.

Some radios in the market use only nine digit. If any member of your group is not using
Uniden radio, a quick check of its operating guide will advise you the signalling format
It is using.

To change the Caller ID setting.

From the main menu, using the * or ▼ key,
go to the Caller ID Decoding Menu. (If you
have never changed the Caller ID decoding
set-up, the default is digit 10)

Press the MEM key to start programming. The
digit Indicator on display will flash. This
indicates that you can now change the
setting.

To change, use the a or t key.
When completed, press the MEM key. The

new Caller ID setting stops flashing and wilt
be stored in the radio memory.

To return to normal operation, press and hold
the OS/GS key for about 1.5 seconds,
or press either the a or t key to go to the
other programmable parameter.

42

Service

Should you find it desirable or necessary to service your UH*100, we suggest you
contact the Uniden Dealer where your purchase was made. Your dealer will be able to
assist you with complete service information.

If you require service that is within the terms of your warranty you should present a

copy of your receipt to your dealer to authenticate your claim.

If you find it inconvenient to obtain service assistance from a dealer, please pack your
radio in a suitable container that will provide adequate protection. Enclose a note

describing the problem and a copy of your receipt, and send the radio transportation

prepaid to:

Uniden Australia Pty Limited
Customer Service Division
345 Princes Highway
Rockdale NSW 2216

Ph. [phone]
Fax [phone]

43

Care and Maintenance

Notice

If the UH-100 has been subjected to extreme high temperature {above 60°C) for a

prolonged period of time, blackening of the Liquid Crystal Display (LCD) may occur.
This is not a fault. Normal LCD operation resumes when the temperature stabilizes

back to standard operating conditions (0 to 55°C).

Preventive Maintenance

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

1. Check the Standing Wave Ratio (SWR).

2. Inspect the tightness of all electrical connections.

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

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

Troubleshooting

Should the unit malfunction or perform poorly, follow the prooedures indicated below:

1. If the transceiver is completely inoperative...
* Check the power cord and fuse.

2. If there is trouble with receiving...
* Check the VOLUME control setting.
* Be sure the SQUELCH is adjusted properly. Possibly the radio is over-squelched
* Check that the radio is in an operational mode.

3. 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 capacitor protects the channels stored in the SUNDOWNER UH-100 memory
for up to 2 weeks after the DC power cable is disconnected.

44

UHF CB Channel Information

This radio has been designed to provide a high level of performance in the Citizens
Band Radio Service, which is comprised of the following frequency assignments:

SIMPLEX Operating Mode

Channel Channel Frequency in MHz

1
2 476.450
3 476.475
4
5 476.525
6
7
8
9 476.625

10 476.650
11
12 476.700

13 476.725

14

15

16

17 476.825

18 476.850

19 476.875
20 476.900
21
22 476.950
23
24
25 477.025
26 477.050
27 477.075
28
29 477.125
30 477.150
31
32
33 477.225
34 477.250
35 477.275
36
37
38 477.350
39 477.375
40 477.400

476.425

476.500

476.550

476.575

476.600

476.675

476,750
476,775

476.800

476.925

476.975

477.000

477.100

477.175

477.200

477.300
477,325

45

DUPLEX Operating Mode

Channel

Assignment

CH1 476.425

CH2 476.450
CH3 476.475 477.225 (CH33)
CH4 476.500 477.250 (CH34)
CH5 476.525 477.275 (CH35)
CH6
CH7
CH8 476.600

Receive

Frequency (MHz)

476.550 477.300 (CH36)

476.575 477.325 (CH37)

T ransmit

Frequency (MHz)

477.175 (CH31)

477.200 (CH32)

477.350 (CH38)

46

General

Channels
Frequency Range
Crystal Oscillator
Microphone
Speaker
Antenna Connector
Jacks & Connectors

Controls

Indicators

Cabinet Size

Weight

Operating Temperature
Power Requirements
SMA Approval

Accessories

Specifications

:40
: 476.425MHz to 477.40MHz
:4
: 600 ohm, Dynamic Type
:8 ohm, 3.5W
: M-T ype
: Mìe 4P Metal

EXT SP 3.5q
DC Power 2P Type

: PRESS-TO-TALK Button (Microphone)

TONE CALL Button (Microphone)
SCAN/SEEK Button
OS/GS Button
SCRAMBLE Button

BACK LIGHT CONTROL Button
OFFA/OLUME Control
SQUELCH Control
MEMORY Button

DUPLEX Button
TONE SQUELCH Button
CHANNEL UP/DOWN Button

: DUPLEX Indicator

TX Indicator
CALL indicator
TSQ Indicator
GROUP SCAN Indicator
MEMORY Indicator
CHANNEL Indicator

PRI Indicator
S/RF Level Indicator
SCAN Indicator
TX;RX frequency, 5 digits SELCALL ID Indicator
SCRAMBLE Indicator

: W : 172 mm

H : 52 mm
D : 145 mm

:1.0 kg
; 0" to +55“C
:13.8VDC Nominal
: Type accepted under SMAS250
: DC power cable with built-in-luse, microphone, microphone

hanger, mounting bracket screw (2), washer (2) for
microphone hanger, microphone hanger screw (2),
washer star (2) for mounting bracket, rubber washer (2)
for mounting bracket, knob (2) for mounting bracket

47

Vleasurement Conditions

^ower Source
i\ntenna Impedance

Test Temperature
Modulation Frequency
Mean Signal Input Level
Reference Audio Output
Power : SOOmW
Reference Modulation
Deviation
Audio Output Load

: 13,8V (DC)
: 50 ohm
:25°C
: 1 kHz (RX/TX)
:1000 pV

: ±3 kHz deviation
: 8 ohms resistive

Transmitter Section

Frequency Tolerance at 25°C
(5 minutes after
turning on)
Carrier Power
Spurious Emission
Current Drain
Modulation Frequency Response (1 kHz, 0 dB reference, at 1 kHz deviation)

Lower at 500 Hz

Upper at 2.0 kHz
Microphone Sensitivity
for 3 kHz Deviation
Maximum Deviation

at 1 kHz

at 6 kHz

±0.5 kHz
5W (max)

-40 dBm
1500mA

:-6dB
:+5dB

: 1.5mV
: ±4.5 kHz

: ±1.5 kHz (max)

Receiver Section

Sensitivity at 12dB SINAD : 0,23 pV or better
Overall Audio Fidelity :
(1 kHz, 0 dB reference)

Lower at 500 Hz
Upper at 2 kHz

Adjacent Channel

Selectivity (±25 kHz)

Maximum Audio Output

Power

Audio Output Power at

10% THD

Hum & Noise Ratio at

Input ImV

Squelch Sensitivity at

Threshold

Squelch Sensitivity at

Tight
Image Rejection Ratio
IF Rejection Ratio

Oscillator Dropout

Voltage

: +4 dB
:-6dB

:70dB
:3W
:2W
:45dB
:0.1 pV
:1 pV

: 55 dB
: 100dB

:9V

48

Current Drain at No

Signal : 350mA

Current Drain at

Maximum Output : 550mA

SELCALL

standard

Encode/Decode Format
Transmit Tones
Receive Tones
Tone Periods
Lead-In Delay
Lead-In Tone

: CCIR International
: 5 Tones

: 0 ~ 9, A~ D, F
:0'9
;20, 40, 70, lOOmSec
: SOOmSec, 1, 2, 3, 4Sec
: 0 ~ 9, A ~ F

49

Warranty

Uniden Sundowner UH-100 UHF CB Radio

Australian One Year Warranty

Note: Please keep your sales docket as it provides evidence of warranty.

WARRANTOR: UNIDEN Australia Pty. Limited ACN 001 865 498

ELEMENTS OF WARRANTY: UNIDEN warrants 10 the original retail owner for the

duration of this warranty, its Sundowner UH-100 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 ONE(1) Year 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, (F) Installed, programmed or
serviced by anyone other than an authorized Uniden Repair Agent, or (G) Where the
Serial Number label of the product has been removed or damaged beyond recognition.

PARTS COVERED: This warranty covers for 1 year, the Sundowner UH-100 UHF CB
Transceiver Unit only. All accessories, mounting bracket, DC cable, fuse, and
microphone are covered for 90 days.

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.

WARRANTY CARD: If a warranty card has been included with this product, please fill
it in and return it to us within 14 days of purchase. Your name and serial number of the
product will then be registered in our database and this will help us process your claim
with greater speed and etficiency should you require warranty service.

PROCEDURE FOR OBTAINING PERFORMANCE OR WARRANTY: tn the event that
the Product does not contorm 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

SERVICE DIVISION

345 Princes Highway, Rockdale, NSW 2216

Ph [phone] FAX [phone]

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.)

50

uniden

Australia Pty. Ltd.

34 5 P rin ce s H ig hw a y, R oc kd ale, N .S ,W .22 16

P h o ne : { 0 2) 9 59 9 3 10 0

Fa x:(0 2) 9 59 9 3 2 78

Fe atu res , s p e c ific ation s, a n d a vaila b ility o f o p tio na l a cc e ss orie s are a ll

U TZ Z0 18 6 4Z Z © C o py r ig ht 1 9 96 U n id en A u stra lia P ty. L t d .

U nid e n » is a r e g is te red t r a d e m a r k of U n io fen Corporation.

su bje ct to ch an ge w ith ou t n otic e .