Uniden SUNDOWNER UH-099 Owner's Manual

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UHF CB TRANSCEIVER

OWNER'S MANUAL

SUNDOWNER UH-O99

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Contents

Controls/lndicators/Connections 2

FrontPanelControls 2
FrontPanelIndicators 3

Microphone

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Back Panel "...5

Getting Started 6

Mobile Station Installation 6
Choosing an Antenna 6

Ground System 6

Operation 7

HowtoReceive " , 7

How to Transmit 7

Scanning 8

Programming Scan Channels 8
Removing GroupScan Channels 9
Open Scanning 9
Group Scanning 10
Receiving a Signal on a Group Scan Channel 10
Removing Open Scan Channels 11

Reinstalling Channels into the Scan Group 12

Selective Calling 13

Outline 13
ReceiverQuieting

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Call Receiving 14
Tone Squelch Scanning. 14
Tone Calling 15
5/6 Tone TX SELCALL Programming 16
Group Calling " 17

5/6 Tone SELCALL Programming 19

Receiver SELCALL ID 20

Tone Period 22

Lead-in Delay ... " 24
Lead-in Tone " " 25

Alarm Mode ..., , 27

Care and Maintenance 29

Notice ... ,. 29
Preventive Maintenance 29

Troubleshooting ." ,.. " , ..,. ...29

Memory Backup 29

UHF Channel Information 30

Specifications. ...... ...... 32

Warranty 35

Page

1

Contro 15/1nd icators/Con nactio ns

CHANNEL SELECTOR
Selects the desired channel for transmission and reception.

SCAN CONTROL (SCAN)

Scans channels programmed in the selected SCAN mode.

NOTE: The radio will not scanif the selected Scan Memory has not been
programmed.

OPEN SCAN/GROUP SCAN CONTROL (OS/GS)
Selects the desired SCAN mode. Press the button once to toggle between

OPEN SCAN and GROUP SCAN modes.

TONESQUELCH CONTROL (T.SQ)

Turns on or off the T.Sa channel memory when the button is pressed for 1.5

seconds. (Any channel can be set.)

BACKLIGHT CONTROL H).i

Changesthe backlight intensityto BRIGHT, MEDIUM or OFF when the

buttonis momentarily pressed. Changes the backlight color to either green or

amberwhen the -:Q-buttonis pressed for 1.5 seconds.

DUPLEX CONTROL
Programs semi-duplex operations for channels 1through 8.

MEMORY CONTROL (MEM)

Placeschannel numbers into the memory scan list (OS or GS),when pressed

for 1.5 seconds while in the NORMAL mode, and removeschannel numbers
from the memory list when pressed again for 1.5 seconds.

Front Panel Controls

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Page 2

1.

2.

3.

4.

5.

6.

7.

8. SQUELCH CONTROL
Eliminates received background noise in the absence of an incoming signal.

Turn the control knob fully counter-clockwise and then slowly rotate clockwise

until the received noise is eliminated.

9. VOLUMECONTROL

Turns the radio on and increases the volume level when turned clockwise.

Decreases the volume level and turns the radio offwhen turned counterclockwise.

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

11. LIQUID CRYSTAL DISPLAY (LCD)

Uses several indicators to show the current operational mode. The two digits at
the right indicate the selected channel. The smaller two and three letter displays

indicate which feature is currently active.

FRONT PANEL INDICATORS

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TX INDICATOR (TX)
The "TX" and "RF" icons appear during transmission.

CAL INDICATOR (CAL)
The "CAL" icon appears when an incoming tone code successfully opened the
Tone Squelch, or when TX SELCALL codes are being transmitted.

MEMORY INDICATOR (MEM)

In the normal mode (Scan Mode Off) the "M EM" icon appears when the channel
indicated by the CHANNEL INDICATOR is programmed in the selected
scan memory.
DUPLEX INDICATOR (DUP)

The "DUP" icon appears when the Duplex Channel Operation is selected.

SIGNAL/RF LEVEL INDICATOR

Indicates the relative signal strength level (S) when receiving, or the relative TX
power (RF) level when transmitting.
TONE SQUELCH INDICATOR (TSQ)
The "TSO" icon appears when the Tone Squelch has been activated.
OPEN SCAN INDICATOR (OS)
The "OS" icon appears when the Open Scan Mode is selected.
GROUP SCAN INDICATOR (GS)

The "GS" icon appears when the Group Scan Mode is selected.

SCAN INDICATOR (SCAN)

The "SCN" icon appears when Scan is activated.

PRIORITY INDICATOR (PRI)

The "PRI" icon appears only when in the GS Mode and Scanning, either when

the PRI channel becomes active or when the channel knob is rotated to select

a new PRI channel.

Page 3

Microphone

1 2

1.

PRESS- TO-TALK Button

Use the PRESS- TO-TALK button on the microphone to receive and transmit.
Press the button to activate the transmitter and release the button to receive.

When transmitting, hold the microphone about two inches from your mouth and
speak clearly in a normal voice.

2.

TONE CALL CONTROL (CALL) Button

Use the TONE CALL CONTROL (Call) button to check, edit, or transmit the TX
Selcalll D. Press the button once and the Selcalll D will be displayed. Under this
condition you can change the Selcall ID (See page 16 for TX SELCALL ID

Programming). To abort, momentarily press the Call button again. If you want

to transmit the existing code, press and hold the Call button for more than 1.5
seconds.

Page 4

Back Panel

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1.

EXTERNAL SPEAKER JACK (EXT.SP)
Usedfor remotereceivermonitoring. When the external speaker isconnected

the internalspeaker is automatically disconnected.

2. POWER

DC power is connectedto the transceiver through this jack. A power cord is
suppliedwith the transceiver.

3.

ANTENNA CONNECTOR (ANT)
The transmission line cable plug connector (M-type) isconnected to the

transceiverthrough this antenna connector socket.

Page 5

Getting Started

Mobile Station Installation

Select the location of the transceiver and microphone bracket before starting the
installation. The location should be convenient and should not interfere with the driver

or passenger in the vehicle. The transceiver should be securely fastened to a solid
face, using the mounting bracket and self-tapping screws which are provided.

Choosing an Antenna

Since the maximum allowable power output of the transmitter is limited by the
Spectrum Management Agency (SMA), the antenna is a very important factor for
transmission distance. For this reason, the installation of a quality antenna is strongly

recommended. The SundownerUH-O99 is a superior transceiver, however, installing
an inferior antenna may cause a reduction in performance.

Only a properly matched antenna system will allow maximum power transfer from the
50-ohm transmission line to the radiating element. Your Uniden dealer is qualified to
assist you in the selection of a compatible antenna to meet your application
requirements.

For automobile installation, the whip antenna is recommended. The most efficient and
practical installation is a full quarter wave whip antenna mounted on the rear deck
midway between the rear window and bumper.

A short "loaded" whip antenna is easier to install on an automobile. However it is not
as efficient as a full quarter wave whip antenna.

For marine installation, consult your dealer for information regarding an adequate
grounding system and prevention of electrolysis between fittings in the hull and the

water.

Ground System

Connect the red DC power cord from the transceiver to the positive (+) battery terminal
or another convenient point and connect the black power lead to the vehicle frame,
or the negative (-) battery terminal.

Page 6

Operation

How to Receive

1. Confirm that the power source, antenna, and microphone are connected
properly before proceeding to the following steps.

2.

Turn the unit ON by rotating the VOLUME control clockwise.

3.

Set the CHANNEL CONTROL knobto the desired channel.

4.

Set the VOLUME control to a comfortable listening level.

Listen to the background noise from the speaker. Turn the SQUELCH control
slowly clockwise just until the noise is eliminated (no signal should be present).
Leave the control at this setting. The Squelch is now properly adjusted. The
receiver will remain quiet until a signal is actually received. Do not advance the
control too far, or some of the weaker signals will not be heard.

5.

How to Transmit

1. Carefully read the SMA Rules and Regulations prior to operating the transmitter.

2.

Select the desired channel.

3.

To transmit, press the PRESS- TO-TALK button on the microphone. 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 (this provides the best
results). Speak at a normal level. Never raise your voice or shout into the
microphone. Whenever the PRESS- TO-TALK button is pressed, the TX indica-
tor will light.

~ The Transceiver Voltage Standing Wave Ratio (V.S.WR.)

ill measurement must be performed prior to the use of the

WARNING transmitter. A V.S.WR. ratio in excess of2:1 may damage the

transmitter.

Page 7

Scanning

Pressing the SCAN button one time will initiate scanning, and scanning is stopped
either by pressing the button a second time or pressing the Press-to- Talk button.

Programming Scan Channels

When the radio is initially turned on, there will not be any channels programmed in the
Group Scan Memory.

To Program scan channels into the Group Scan Memory, use the following proce-
dure:

1.

Select the NORMAL mode (or when scanning, cancel scanning by pressing the
SCAN button.)

2.

Select the GROUP SCAN mode by pressing the OS/GS button. The GS
indicatorshould appear.

4.

Rotate the CHANNEL SELECTOR knob until the channel you wish to scan is

displayed. Note that the MEM indicator should not appear, indicating that this
channel is not currently programmed in the GROUP SCAN memory.

Press and hold the MEM button for about 1.5 seconds until a beep isheard. The
MEM indicator should now appear indicating that the channel is now pro-
grammed in memory.

3.

5.

Continue steps 3 and 4 to program all the channels you wish to scan.

Select

NORMAL

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Removing Group Scan Channels

To Delete a programmed channel from the Group Scan Memory, usethe following
procedure:

1.

Rotate the CHANNEL SELECTOR knob until the channel you wish to remove
is displayed. Note that the MEM indicator should appear, indicating that this
channel is currently programmed in memory.

2.

Press and hold the MEM button for about 1.5 seconds until a beep is heard twice.

The MEM indicator should now be off.

Select

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Open Scanning

To commence open scanning, select the OPEN SCAN mode by pressing the OSlGS
button when in GS mode. Then press the SCAN button.

The SUNDOWNER UH-099 will commence scanning the programmed channels, and
will indicate each channel on the CHANNEL indicator as it is scanned.

When a busy channel is found, the radio will 'lock' onto it, and will remain there for as

long as the signal is present, and for 3 seconds after the transmission ceases. This
allows the SUNDOWNER UH-099 to hold the channel during short breaks in the
conversation. Once the channel has remained clear for 3 seconds, the radio will

resume scanning.

Ifyou do not wish to listen to a busy channel, you can SKIP over itby pressing the MEM
button on the radio. The receiver will immediately resume scanning.

The SCAN MODE will be cleared when the PRESS- TO-TALK BUTTON is pressed.

NOTE:

1. During the OPEN SCAN mode, the CHANNEL SELECTOR knob is
ignored.

2. The scan rate in this mode is 0.1 second per channel. In other words, all
40 channels can be scanned in 4 seconds.

Page 9

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Group Scanning

TocommenceGROUPSCANNING, selecttheGROUP SCAN modebypressingthe

OS/GS button when in the OS mode, and select the SCAN mode by momentarily

pressing the SCAN button.

The SUNDOWNER UH-O99will now scan the programmed channels, displaying

each channel number and the PRIORITY channel number. Before it scans each

channel, it quickly "checks" the PRIORITY channel (set by the CHANNEL SELEC-
TOR).

NOTE: 1. In the GS mode, the starting channel prior to GS Memory Scanning

is always set as the Initial PRI Channel.

2. If the GROUP SCAN memory has not been programmed when the
GROUP SCAN mode is selected and the SCAN button has been

pressed, the SUNDOWNER UH-O99will emit an error tone.

3. The PRIORITY channel number can easily be read when necessary by:

(a) Simply turning the Squelch knob counter-clockwise until the squelch
opens. After checking, return the Squelch knob to the previous position.

(b) Pressing the PRESS- TO-TALK button, the unit will transmit on the
PRI channel and scanning will be cancelled. Press the SCAN button to

resume scanning.

Receiving a Signal on a Group Scan Channel

If a signal is received on a programmed scan channel, the radio will 'lock' onto that

channel provided there is no signal on the PRIORITYchannel.

When the receiver is 'locked' onto the scan channel, the LCD Channel Indicator will

switch between the scan channel and the PRIORITY channel. This is because the
receiver is still 'listening' for signals on the PRIORITY channel.

When the scan channel becomes quiet again, the radio will continue to hold the
channel foranother3seconds inorder toallowforanatural pause inthe conversation
before resuming the Group Scanning mode.

Ifthere is a transmission on the PRIORITY channel while you are listening to a scan

channel, the receiver will immediately transfer to the PRIORITY channel and the
PRIORITY channel number will be displayed.

To RESUME scanning, while receiving a signal, momentarily press the MEM button
on the front panel. The receiver will resume scanning.

To stay on the current active channel, momentarily press the PTT button. The Scan

Mode will be cleared.

Page 10

Removing Open Scan Channels

Whenthe radio is initially turned on, all 40 channels areprogrammed in the OPEN
SCAN MEMORY.

If you do not wish to scan some particular channels (e.g. if one or more channels are

continually busy and always causing the scanning function to pause), you can remove
these channels from the scan group by using the following procedure:

1.

Cancel scal)ning (if active).

2.

Select the OPEN SCAN mode by pressing the OS/GS button when in the GS
mode. The OS indicator should appear. The GS indicator should not appear.

3.

Rotate the CHANNEL SELECTOR knob until the channel you wish to remove
is displayed on the CHANNEL INDICATOR.

Note that the MEM indicator is lit, indicating that this channel is currently included in

the scan group.

4.

Press and hold the MEM button for about 1.5 seconds until a beep is heard
twice.

The selected channel has now been removed from the scan group and will not be
included when scanning has commenced and the MEM indicator will not be displayed

on that channel.

Continue steps 3 and 4 to remove any other channels you do not wish to scan.

Page 11

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