Uniden Sundowner UH-100 Owner's Manual

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UHF CB TRANSCEIVER

OWNER'S MANUAL

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Built-In SELCALL

Table of Contents

Controls I Indicators I Connectors 3

Controls 3
Indicators 4
Connectors 5

Introduction .""..."""'.".'...".".".""""".""'.". 6
Included with your UH-100 "..."""."", 7

Operation 8

SettingtheSquelch""."""". 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

Voice Scrambler 18

LCD Backlight Level Control 19
Selective Calling 20
This is UH-100 Calling 21

Making a Call

" 21

Acknowledgment Tone

, """"""""""""""""'" 22

10 SelcalllD Memory.".""""""""""""""""""""""""" 23

Transmitting IDfrom Memory 24

ReceivingCall " , 25

Replying using SELCALL " 26
Group Calling 28

Tone Squelch (Receiver Quieting) 29
Activating the Tone Squelch (Receiver Quieting) 30

Receiving Calls when in Quiet Mode 30

Tone Squelch Scanning 31

SELCALL Advance Programming 32

Radio ID Programming 34

Tone Period Programming 35

Lead-In Delay Programming """""""'" 36
Lead-In Tone Programming 37
Alarm Mode Programming

, 39

Group Call Mode Programming 41

Caller ID Decoding """"""""""""""""""""""""""""""""""""""""'" 42

1

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

"""""""""""""'" 48

TransmitterSection """"""""""""""""""'" 48

Receiver Section 48

SELCALL 49

Warranty 50

2

Controls I Indicators IConnectors

Controls

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1. LIQUIDCRYSTALDISPLAY(LCD) PANEL- IndicatorsforTX,CAL,MEM,TSQ,
GS (OS), SCN, PRI, Channel Number, Frequency (SELCALLCode), Signal

Strength Level (S), Transmit Power Level (RF),DUP and Scrambler.

2. UP/DOWNCHANNELSELECTOR-These controls are used to select the desired

communication channel.

3. ON/OFF, VOLUME& SQUELCHCONTROLS
ON/OFF&Volume Control (Centre Knob)

Turns the UH-100powerON or OFF and adjusts the volume.
Squelch Control (Outer Ring)

Eliminates background noise inthe absence of an incomingsignal.

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

5. TONECALLCONTROLBUTTON- Press to transmit SELCALLcodes, also used
to access TXSELCALLIDprogramming.

6. DUPLEX/ LCDBACKLlGHTControl
a. Duplex Operation

Press this button momentarily to choose semi-duplex operation for Channels 1
through 8.
b. LCDBacklight Control

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

7. OPENSCAN/GROUPSCAN CONTROL(OS/GS) - Switches operation between

OPENSCANandGROUPSCANMode.

3

8. SCANCONTROL(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 intothe memory scan list
(OS or GS).

10. AUDIO SCRAMBLER

I TONE SQUELCH CONTROL - Controls access to audio

scrambling feature and Tone Squelched operation (Quiet Mode).

Indicators

6

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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 I 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 I RF LEVEL Indicator (S I 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-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.

4

Connectors
FrontPanel

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

Back Panel

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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.

5

Introduction

The Uniden UH-1 00 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 the UHF CB Frequency Band, and much more.
We are certain that you will enjoy your UH-1 00. 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.

6

Included with your UH-100

UH-100 Owner's Manual

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Microphone Hanger, Screws

and Washers

Mounting Bracket, Knobs,

Rubber Washer, Washer Stars

and Screws

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DC Power Cord with Fuse

Warranty Registration Sheet

7

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

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Strong Signals

~

Weak Signals

MediumSignals

Noise

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

Strong Signals

Medium Signals

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Weak Signals

Noise

.

..

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..
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8

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.

Strong Signals

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Medium Signals

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Weak Signals

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Noise

Selecting a Channel

1. When you turn on the UH-1 00, the last channel used will appear on the LCD display.

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2a. Press'" to select a higher channel.

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2b. Press T to select a lower channel.

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Channel Auto Step

To quicklychange channels, press and hold ~ or ... . This changes channels at 10

channels per second.

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

Another tone sounds when Channel Auto step begins.

9

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.

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2. To transmit, press the PTT 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 (Le. 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

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Normal Simplex operat~

Transmitting on CH 01 '\

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No si~nal being
Received

10

Operation with the aid of 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".

YourUH-100is designed withthe capabilityto 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 originaloperating frequency.

For example,

CH01on DuplexMode willReceive on CH01 but Transmit on CH31

CH02on Duplex ModewillReceive on CH 02 but Transmit on CH32 etc....

Ifyou transmit on CH01 Duplex mode, you are actually transmitting on CH31, the
repeater station down-converts your signal and retransmits on CH01.

To operate UH-100in Duplex Mode,

ego CH01 is being used in your area for

repeater use.

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Press DUPLEX momentarily.

The DUP icon appears.

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11

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

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Press DUPLEX again to deactivate the Duplex Operation. UH-1 00 will return to Simplex
operation.

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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 CH 17 when switched on.

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2. Press SCN and Scanning starts.

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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.

MEM " ,-,

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

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

Note: IfSCAN is deactivated while 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.

13

2. Group Scan (GS) Mode

Allows youto monitor a Priority Channelwhile scanning.
To use GS Mode Scanning, press the OS I 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.

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

Note: If SCAN is deactivated whileitis tuned at an active channel, the UH-100will

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

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,

ego PRI Channel is CH17 (476.825 MHz)

a. press"", to select a higher channel (scanning pauses)

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GS

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b. press"', to select a lower channel

GS

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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, otherwise, the radio resumes scanning.

15