Uniden UH820SX-NB User manual

UH820SX-NB
UH820SX-2NB
UHF CB Radio
For more exciting new products please visit our website:
Australia: www.uniden.com.au
New Zealand: www.uniden.co.nz

NOTE
The citizen band radio service is licenced in Australia by ACMA
Radio-communications (Citizen Band Radio Stations) Class
Licence and in New Zealand by MED General User Licence
for Citizen Band Radio and operation is subject to conditions
contained in those licenses.
NOTE
It is illegal to operate this radio transceiver outside of Australia
and New Zealand.
NOTE
Do not plug in any AC Adapter plug into the accessory jack.
Floating/Waterproof: JIS7
Uniden’s UH820SX-NB radio is designed to meet the water proong standard
of JIS7 and will oat in water.
This Means: Protected against the effects of immersion in water up to 1m
depth for 30 minutes.
NOTE
The UH820SX-NB will only meet this rating if fully assembled
and all rubber seals are well maintained and correctly tted.
This means that the carabiner clip is not connected and the
battery cover securely fastened.
If your radio is immersed in water, you might notice that the sound is
distorted. This is because there is still water remaining in and around the
speaker and microphone. Just shake the radio to clear excess water, and the
sound should return to normal.
NOTE
If your radio is exposed to salt water, clean your radio
thoroughly with fresh water, and dry it before turning it on.
2
Warning
UNIDEN UH820SX-NB/UH820SX-2NB UHF CB Radio

Introduction
Features 4
Controls & Indicators 5
Included in Your Package 7
Getting Started
Connect Drop-In Charger with AC adaptor 8
Install the Battery Pack 8
Attaching the Beltclip 9
Using the Carabiner Clip 9
Charging the Battery Pack 9
Battery Level Display 11
Operation
Power On/Off 12
Volume 12
Setting the Squelch 12
Selecting a Channel 13
To Transmit and Receive 13
To Operate in Duplex Mode (Repeaters) 14
Transmit Power Select 15
Boost Feature 15
Scanning 15
Open Scan (OS) Mode 16
Group Scan(GS) Mode 17
Priority Channel Watch During Group Scan 18
Programming Scan Channels 18
Drop-Out Delay 18
Programming the Instant Priority Channel 19
Recalling the Instant Channel 19
Monitor 19
CTCSS 20
DCS 20
VOX 21
Vibrate Alert 21
Busy Channel Lockout 22
Call Tone 22
Roger Beep 23
Key Beep 23
Keypad Lock 23
Back Lighting 24
SOS Strobe 24
Torch LED 24
CTCSS Codes and Frequencies 25
DSC Codes Table 26
UHF-CB Channel Guidelines 27
UHF-CB Channels and Frequencies 28
Warranty 30
3
Contents
UHF CB RadioUNIDEN UH820SX-NB/UH820SX-2NB

4
Introduction
UNIDEN UH820SX-NB/UH820SX-2NB UHF CB Radio
The UH820SX-NB radio is a oating, waterproof, and rugged UHF-CB
transceiver. This hand held UHF-CB radio will give you consistent,
outstanding performance in virtually all conditions and situations. To ensure
that you get the most from the UH820SX-NB’s features, please read this
operating guide carefully before using the unit.
Features
• Narrow Band (NB) 80 Channel
UHF-CB band Radio¹
• TX output power: 0.5W or 2.0W
• Up to 10km+ range²
• Duplex capability
• Floating / Waterproof to JIS7³
• LCD display with large channel
indication
• Backlit LCD (orange) and Glow-in-
the-Dark Keypad
• Built-in precision matched
Antenna
• Rechargeable NiMH battery pack
• Desktop charger
• Battery level indicator
• Low Battery Alert
• Automatic Battery Power Save
• Carabiner Clip
• Optional +12V/+24V DC Cigarette
lead charger
• Optional External Speaker/
Microphone
• Vibrate mode (on incoming signals)
• High intensity LED for SOS strobe
and Torch
• Channel and Volume select
• Instant Channel Programming
• One Touch Instant Channel Recall
• Channel Memory
• Group Scan with Priority CH Watch
• Open Scan
• OS/GS Scan separately
• Selectable Scan direction
• 5 Level VOX (Voice Activated
Function)
• Selectable 2 position Squelch
• Monitor Mode
• Busy Channel Lock-Out
• 10 different CALL tones
• Roger beep
• Key beep On/Off
• Keypad lock
• Built-in privacy codes: 38 CTCSS
and 104 DCS codes
1Refer to p.27 - p.29 for channel information.
2Range varies depending on the environment. 10km+ range is noted in a at
open environment @2W transmit power.
3Protected against the effects of temporary immersion in water. The
UH820SX-NB can withstand immersion in water up to 1.0m depth for 30mins.

5
Controls & Indicators
UHF CB RadioUNIDEN UH820SX-NB/UH820SX-2NB
1 Antenna
2 PTT (Push to Talk) Button
3 Power Boost Button
4 LIGHT (Torch)/Monitor Button
5 Channel Up Key
6 Channel Down Key
7 SQL (Squelch)/SOS Strobe Key
8 Call/(Key)Lock Key
9 SOS Strobe/Torch LED
10 Carabiner Loop
11 Accessory Jack
12 Menu/Power Key
(single charger shown)
13 Volume Up Key
14 Volume Down Key
15 Instant Channel Key
16 Scan/Memory Key
17 Microphone
18 Speaker
19 Charging Contacts
20 Charge LED
1
2
3
4
5
7
8
12
13
14
15
17
18
11
6
916
10
UH820SX-NB
19
CHARGING CRADLE
20
1
2
3
4
5
7
8
12
13
14
15
17
18
11
6
916
10
UH820SX-NB
19
CHARGING CRADLE
20

6
Controls & Indicators
UNIDEN UH820SX-NB/UH820SX-2NB UHF CB Radio
21 Channel Indicator
22 TX - Transmit
23 HI - Power Hi/Lo
24 V - Vibrate Mode
25 M - Memory Channel
26 GS - Group Scan (GS)/Open Scan (OS)
27 C - Continuous Tone Coded Squelch System (CTCSS)
28 D - Digitally Coded Squelch (DCS)
29 CTCSS/DCS Code
30 RX - Signal Receive
31 BCL - Busy Channel Lockout
32 VOX - Voice Activation Mode
33 PRI - Priority Channel/Watch
34 SCAN
35 Keylock
36 Battery Level
TX RX
GS
SCAN
M
BCL
VOX
HI
PRI
C
D
30
31
32
33
34
35
21
22
23
24
25
26
27
28
29
36
TX RX
GS
SCAN
M
BCL
VOX
HI
PRI
C
D

7
Included In Your Package
UHF CB RadioUNIDEN UH820SX-NB/UH820SX-2NB
Optional Accessories
• +12V to +24V DC Cigarette Lead Charger (CK-820)
• Voice Activated (VOX) Headset (VM-041)
• Commercial Quality Speaker Microphone (SM-060CQ)
• Commercial Quality Air Tube (EM-064CQ)
• Commercial Quality Referee’s Kit (RK-060CQ)
• Commercial Quality Rubber Car Hook (EM-060CQ)
* UH820SX-NB (x1), UH820SX-2NB (x2)
** UH820SX-NB: DT8201, UH820SX-2NB: DT8202
NOTE
If any of these items are missing from the box, contact your
place of purchase, immediately.
AC Adapter
AAD-041S(M)
NiMH Battery Pack
(BT1013)* Owner’s Manual
UH820SX-NB
UH820SX-2NB
UHF CB Radio
For more exciting new products please visit our website:
Australia: www.uniden.com.au
New Zealand: www.uniden.co.nz
Carabiner Clip*
Beltclip*
UH820SX-NB*
1
2
3
4
5
7
8
12
13
14
15
17
18
11
6
916
10
UH820SX-NB
19
CHARGING CRADLE
20
Drop-in Charger
(Single charger shown)
(DT8201)**
1
2
3
4
5
7
8
12
13
14
15
17
18
11
6
916
10
UH820SX-NB
19
CHARGING CRADLE
20
Heavy Duty
Earpiece*

8
Getting Started
UNIDEN UH820SX-NB/UH820SX-2NB UHF CB Radio
Connect Drop-In Charger with AC adaptor
Plug one end of the AC adaptor into the wall
outlet and the other end into the drop-in charger.
NOTE
• The drop-in charger is not water proof. Ensure the radio is
dry before connecting to the charger.
• Don’t use the charger when the ambient temperature is
below 0º C (32º F) or above 45º C (113º F)
(single charger shown)
Install the Battery Pack
Your radio uses the supplied NiMH battery pack.
To install the NiMH battery pack:
1. Make sure the radio is off.
2. Turn the screw holding the battery compartment counterclockwise with
a screwdriver, and hold up the battery cover.
3. Put the NiMH battery pack in the battery compartment applying the
battery contacts to the lower charge contacts. Be sure to follow the
instructions written on the battery pack’s label. Installing the battery
pack incorrectly will prevent the unit from operating.
4. Before placing the battery cover back on the radio, check the rubber
seal around the battery compartment and the ribbon of the battery
pack: make sure that the seal is in good condition and that there is
no foreign matter under the seal.
5. Replace the battery compartment door. Tighten the screws securely.

9
Getting Started
UHF CB RadioUNIDEN UH820SX-NB/UH820SX-2NB
NOTE
If the rubber seal appears warn, nicked, or dried out,
replacement seals are available. Visit the website on the cover
of this manual.
CAUTION
Use only the supplied NiMH battery pack. Do not charge
alkaline or non rechargeable batteries.
Attaching the Beltclip
To attach the belt clip:
Slide the belt clip until it snaps into place.
To remove the belt clip:
To remove the belt clip, press and hold belt clip locker, slide the belt clip at the
same time until released.
Using the Carabiner Clip
Use the carabiner clip to conveniently secure the UH820SX-NB to a belt or strap.
NOTE
The UH820SX-NB will oat when the carabiner clip is not
connected and the battery cover securely fastened.
Charging the Battery Pack
Your radio includes charging cradle and rechargeable battery pack. Follow
these instructions to recharge the radio in the charging cradle.
NOTE
For the initial battery charge, make sure the radio is off for
optimum charging.

1. Connect the adapter’s plug to DC IN 9V jack
of the charging cradle and plug the other end into
an AC outlet.
2. Set the charging cradle on the desk or tabletop, and
place the radio in the charging cradle with the keypad
facing forward.
3. Make sure that the LED illuminates. Charge the battery
pack for 16 hours and remove the radio from the
charging cradle after charging.
10
Getting Started
UNIDEN UH820SX-NB/UH820SX-2NB UHF CB Radio
(single charger shown)
NOTE
• Charge time may vary depending on the battery life remaining.
• For fastest charging, turn off the radio before charging.
WARNING
• The charging cradle is not waterproof. If the charging
cradle falls into water, unplug it before attempting to
remove it from the water. Allow the cradle to dry completely
before reconnecting the power.
• Wipe off dirt or shake water from your radio before placing
in the charging cradle if your radio is soiled or wet.

11
Getting Started
UHF CB RadioUNIDEN UH820SX-NB/UH820SX-2NB
Battery Level Display
The BATTERY icon at the bottom of the screen indicates the battery level at
all times. The battery level is displayed in 4 levels.
LEVEL 4
Battery 100% full
LEVEL 2
Low Battery
NOTE
When (PTT) or (BOOST) is pressed at Level 1, an error tone
sounds and transmission is disabled. Once at Level 1 the unit
will automatically shutdown after 60 seconds.
NOTE
Recharge the battery at any time. From empty the battery
will take up to 16 hours to fully charge.
Battery Life : 14 Hours (Typical)
This is based on the following Duty Cycle:
Transmit (Low Power) 5%
Receive 5%
Stand-by 90%
LEVEL 3
Battery approx.
40% capacity
LEVEL 1
(ashing)
Empty Battery

12
Operation
UNIDEN UH820SX-NB/UH820SX-2NB UHF CB Radio
Power On/Off
1. Press and hold
1
2
3
4
5
6
7
8
9
10
11
12
13
MHS050
22
CHARGING CRADLE
14
15
16
19
20
18 21
LIQUID CRYSTAL DISPLAY
17
SCAN
TRI
TX
MEM LOCK
LO
HI
to turn
the radio ON.
A channel number and battery level
should appear on the display.
2. Press and hold
1
2
3
4
5
6
7
8
9
10
11
12
13
MHS050
22
CHARGING CRADLE
14
15
16
19
20
18 21
LIQUID CRYSTAL DISPLAY
17
SCAN
TRI
TX
MEM LOCK
LO
HI
to turn
the radio OFF
NOTE
Power Off feature is not available
in Menu mode. Exit Menu mode
to use Power off feature.
Volume
The volume level can be adjusted from 0
(no volume) to 7 (maximum volume).
1. Press (vol) or to increase or
decrease the volume level. Uand the current
volume level will ash on the display.
Setting The Squelch
The squelch is used to eliminate any annoying background noise when there
are no signals present.
Sq 1 - max sensitivity (min squelch)
Sq 2 - min sensitivity (max/tight squelch)
1. Press (sql) momentarily. Sq and the current
squelch level will ash on the display.
2. Press (sql) while the squelch level shows to
change the squelch level between 1 and 2.
3. The squelch setting mode automatically saves
and exits after 2 seconds of inactivity.
TX RX
GS
SCAN
M
BCL
VOX
HI
PRI
C
D
FULL
M
Power On/Off
M
Volume
M
Squelch
M
Selecting a Channel
TX
M
To Transmit
and Receive - 1
RX
M
To Transmit and
Receive - 2
To Operate In Duplex
Mode (Repeaters) - 1
To Operate In Duplex
Mode (Repeaters) - 2
HI
Transmit Power - 1
HI
Transmit Power - 2
GS
M
Scanning
RX
SCAN
M
Open Scan (OS) Mode
GS
Group Scan (GS) Mode
RX
M
Monitor
TX RX
GS
SCAN
M
BCL
VOX
HI
PRI
C
D
FULL
M
Power On/Off
M
Volume
M
Squelch
M
Selecting a Channel
TX
M
To Transmit
and Receive - 1
RX
M
To Transmit and
Receive - 2
To Operate In Duplex
Mode (Repeaters) - 1
To Operate In Duplex
Mode (Repeaters) - 2
HI
Transmit Power - 1
HI
Transmit Power - 2
GS
M
Scanning
RX
SCAN
M
Open Scan (OS) Mode
GS
Group Scan (GS) Mode
RX
M
Monitor
TX RX
GS
SCAN
M
BCL
VOX
HI
PRI
C
D
FULL
M
Power On/Off
M
Volume
M
Squelch
M
Selecting a Channel
TX
M
To Transmit
and Receive - 1
RX
M
To Transmit and
Receive - 2
To Operate In Duplex
Mode (Repeaters) - 1
To Operate In Duplex
Mode (Repeaters) - 2
HI
Transmit Power - 1
HI
Transmit Power - 2
GS
M
Scanning
RX
SCAN
M
Open Scan (OS) Mode
GS
Group Scan (GS) Mode
RX
M
Monitor
1
2
3
4
5
7
8
12
13
14
15
17
18
11
6
916
10
UH820SX-NB
19
CHARGING CRADLE
20

Selecting A Channel
Press (ch) or to select the desired channel.
NOTE
If you press and hold (ch) or the
channel numbers will scroll rapidly.
To Transmit And Receive
The radio uses the UHF-CB Channels.
For your reference a list of the available
channels and corresponding frequencies
is printed on p.27 - p.29. (Channels 22
and 23 are for telemetry and
telecommand applications, channels 61,
62 and 63 are for future use. TX is
inhibited on these channels.)
The maximum RF transmit power of
UH820SX-NB is 2W. (see Transmit Power Select, p.15.)
1. Before you transmit, listen for activity on the selected channel.
2. When the channel is clear;
- Press (PTT) to transmit at the selected hi/lo transmit power,
or
- Press (BOOST) to transmit at the maximum transmit power, regardless of
the hi/lo transmit power setting.
TX appears on the LCD during transmit. If transmit
power is on low setting then HI appears when (BOOST)
is pressed.
Hold the radio with microphone approximately
5 cm in front of your mouth with the antenna at
approximately 45° angle away from your head.
Speak in a clear, normal conversational voice.
4. When you have nished speaking, release (PTT) or (BOOST) and listen
for a response then TX disappears on the LCD. RX appears while
receiving a signal.
1
2
3
4
5
7
8
12
13
14
15
17
18
11
6
916
10
UH820SX-NB
19
CHARGING CRADLE
20
13
Operation
UHF CB RadioUNIDEN UH820SX-NB/UH820SX-2NB
(PTT)
(BOOST)
TX RX
GS
SCAN
M
BCL
VOX
HI
PRI
C
D
FULL
M
Power On/Off
M
Volume
M
Squelch
M
Selecting a Channel
TX
M
To Transmit
and Receive - 1
RX
M
To Transmit and
Receive - 2
To Operate In Duplex
Mode (Repeaters) - 1
To Operate In Duplex
Mode (Repeaters) - 2
HI
Transmit Power - 1
HI
Transmit Power - 2
GS
M
Scanning
RX
SCAN
M
Open Scan (OS) Mode
GS
Group Scan (GS) Mode
RX
M
Monitor
TX RX
GS
SCAN
M
BCL
VOX
HI
PRI
C
D
FULL
M
Power On/Off
M
Volume
M
Squelch
M
Selecting a Channel
TX
M
To Transmit
and Receive - 1
RX
M
To Transmit and
Receive - 2
To Operate In Duplex
Mode (Repeaters) - 1
To Operate In Duplex
Mode (Repeaters) - 2
HI
Transmit Power - 1
HI
Transmit Power - 2
GS
M
Scanning
RX
SCAN
M
Open Scan (OS) Mode
GS
Group Scan (GS) Mode
RX
M
Monitor
TX RX
GS
SCAN
M
BCL
VOX
HI
PRI
C
D
FULL
M
Power On/Off
M
Volume
M
Squelch
M
Selecting a Channel
TX
M
To Transmit
and Receive - 1
RX
M
To Transmit and
Receive - 2
To Operate In Duplex
Mode (Repeaters) - 1
To Operate In Duplex
Mode (Repeaters) - 2
HI
Transmit Power - 1
HI
Transmit Power - 2
GS
M
Scanning
RX
SCAN
M
Open Scan (OS) Mode
GS
Group Scan (GS) Mode
RX
M
Monitor

14
Operation
UNIDEN UH820SX-NB/UH820SX-2NB UHF CB Radio
To Operate In Duplex Mode (Repeaters)
The Duplex function enables you to access local repeater stations.
NOTE
You can only activate Duplex on CH01-CH08 and CH41-CH48.
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.
Eg. CH01 is being used in your area
for repeater use.
1. Press (menu) three times.
2. Press (ch) or or (vol) or to
change the selection. r appears for CH01-CH08
and nappears for CH41-CH48 when duplex
is selected.
3. Press & hold (menu) to save and exit.
NOTE
Contact your retailer for a list of repeaters available in your area.
Operation with the aid of a Repeater
TX RX
GS
SCAN
M
BCL
VOX
HI
PRI
C
D
FULL
M
Power On/Off
M
Volume
M
Squelch
M
Selecting a Channel
TX
M
To Transmit
and Receive - 1
RX
M
To Transmit and
Receive - 2
To Operate In Duplex
Mode (Repeaters) - 1
To Operate In Duplex
Mode (Repeaters) - 2
HI
Transmit Power - 1
HI
Transmit Power - 2
GS
M
Scanning
RX
SCAN
M
Open Scan (OS) Mode
GS
Group Scan (GS) Mode
RX
M
Monitor
TX RX
GS
SCAN
M
BCL
VOX
HI
PRI
C
D
FULL
M
Power On/Off
M
Volume
M
Squelch
M
Selecting a Channel
TX
M
To Transmit
and Receive - 1
RX
M
To Transmit and
Receive - 2
To Operate In Duplex
Mode (Repeaters) - 1
To Operate In Duplex
Mode (Repeaters) - 2
HI
Transmit Power - 1
HI
Transmit Power - 2
GS
M
Scanning
RX
SCAN
M
Open Scan (OS) Mode
GS
Group Scan (GS) Mode
RX
M
Monitor

15
Operation
UHF CB RadioUNIDEN UH820SX-NB/UH820SX-2NB
Transmit Power Select
The UH820SX-NB has two transmit
power levels: Hi: 2.0 Watt and Lo: 0.5 Watt.
To change your transmit power level:
1. Press (menu).
2. Press (ch) or or (vol) or
to change the setting to Hi or Lo.
3. Press & hold (menu) to save and exit.
Boost Feature
Use the Boost feature by pressing (BOOST) instead of (PTT) to transmit at
maximum transmit power (2W) regardless of the transmit hi/lo setting.
NOTE
Transmitting on a higher level will use more Battery power but
will enable you to transmit further.
Scanning
The UH820SX-NB has two types of scanning; Open
Scanning (OS) and Group Scanning (GS), OS Scan
searches all the channels and frequencies in its
memory continuously. GS Scan is similar to OS scan
but has the added ability to monitor the priority
channel every 1.5 seconds.
Scanning allows you to search for active
channels programmed in the OS or GS memory.
To initiate scanning,
1. Assuming the unit is on CH01 when switched on.
2. Press (scan) and scanning starts.
SCAN appears during scanning.
TX Power Low
TX Power High
TX RX
GS
SCAN
M
BCL
VOX
HI
PRI
C
D
FULL
M
Power On/Off
M
Volume
M
Squelch
M
Selecting a Channel
TX
M
To Transmit
and Receive - 1
RX
M
To Transmit and
Receive - 2
To Operate In Duplex
Mode (Repeaters) - 1
To Operate In Duplex
Mode (Repeaters) - 2
HI
Transmit Power - 1
HI
Transmit Power - 2
GS
M
Scanning
RX
SCAN
M
Open Scan (OS) Mode
GS
Group Scan (GS) Mode
RX
M
Monitor
TX RX
GS
SCAN
M
BCL
VOX
HI
PRI
C
D
FULL
M
Power On/Off
M
Volume
M
Squelch
M
Selecting a Channel
TX
M
To Transmit
and Receive - 1
RX
M
To Transmit and
Receive - 2
To Operate In Duplex
Mode (Repeaters) - 1
To Operate In Duplex
Mode (Repeaters) - 2
HI
Transmit Power - 1
HI
Transmit Power - 2
GS
M
Scanning
RX
SCAN
M
Open Scan (OS) Mode
GS
Group Scan (GS) Mode
RX
M
Monitor
TX RX
GS
SCAN
M
BCL
VOX
HI
PRI
C
D
FULL
M
Power On/Off
M
Volume
M
Squelch
M
Selecting a Channel
TX
M
To Transmit
and Receive - 1
RX
M
To Transmit and
Receive - 2
To Operate In Duplex
Mode (Repeaters) - 1
To Operate In Duplex
Mode (Repeaters) - 2
HI
Transmit Power - 1
HI
Transmit Power - 2
GS
M
Scanning
RX
SCAN
M
Open Scan (OS) Mode
GS
Group Scan (GS) Mode
RX
M
Monitor

16
Operation
UNIDEN UH820SX-NB/UH820SX-2NB UHF CB Radio
Open Scan (OS) Mode
(The absence of GS icon indicates that the unit is on OS mode)
Allows continuous scanning of channels stored in the Open Scan (OS) memory.
If an active channel is found, scanning will stop on that channel.
NOTE
The factory has preprogrammed all the UHF-CB channels into
the Open Scan channel memory. However, you can change or
customise the channels by following the steps on programming
Scan Channels on page 18.
Example. CH40 becomes active
If the received signal cease, the unit will
wait for at least 2 seconds for the signal to
return, otherwise scanning resumes.
To skip the active channel, press (ch) or .
Scanning resumes.
To deactivate SCAN, press (PTT) or (scan).
NOTE
1. If SCAN is deactivated while in an active channel, the radio
will stay on that active channel. If no other channels are
active, the radio will reinstate the starting channel.
2. If OS Scanning is initiated when there are no channels
programmed in OS memory, an error tone will be heard and
scanning will not start.
TX RX
GS
SCAN
M
BCL
VOX
HI
PRI
C
D
FULL
M
Power On/Off
M
Volume
M
Squelch
M
Selecting a Channel
TX
M
To Transmit
and Receive - 1
RX
M
To Transmit and
Receive - 2
To Operate In Duplex
Mode (Repeaters) - 1
To Operate In Duplex
Mode (Repeaters) - 2
HI
Transmit Power - 1
HI
Transmit Power - 2
GS
M
Scanning
RX
SCAN
M
Open Scan (OS) Mode
GS
Group Scan (GS) Mode
RX
M
Monitor

17
Operation
UHF CB RadioUNIDEN UH820SX-NB/UH820SX-2NB
Group Scan(GS) Mode
To change between OS and GS scan;
1. Press (menu) ve times.
2. Press (ch) or or (vol) or
to change the selection.
3. Press & hold (menu) to save and exit.
To initiate scanning,
1. When (scan) is pressed during Group Scan Mode, SCAN will appear
and Group Scan Scanning begins.
2. To deactivate GS scanning, press (PTT) or (scan).
NOTE
1. If SCAN is deactivated while it is tuned to an active
channel, the UH820SX-NB will stay on that active channel.
If none of the channels re-active, the radio will reinstate the
Scan start channel.
2. 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.
TX RX
GS
SCAN
M
BCL
VOX
HI
PRI
C
D
FULL
M
Power On/Off
M
Volume
M
Squelch
M
Selecting a Channel
TX
M
To Transmit
and Receive - 1
RX
M
To Transmit and
Receive - 2
To Operate In Duplex
Mode (Repeaters) - 1
To Operate In Duplex
Mode (Repeaters) - 2
HI
Transmit Power - 1
HI
Transmit Power - 2
GS
M
Scanning
RX
SCAN
M
Open Scan (OS) Mode
GS
Group Scan (GS) Mode
RX
M
Monitor

18
Operation
UNIDEN UH820SX-NB/UH820SX-2NB UHF CB Radio
Priority Channel Watch During Group Scan
The feature allows user to monitor the Instant Priority channel (see page 19)
every 1.5 secs during Group Scanning.
1. Press (menu) four times. PRI setting
ashes.
2. Press (ch) or or (vol) or to change the setting on or off.
3. Press & hold (menu) to save and exit.
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 by pressing (ch) or .
3. Press and hold (scan/mem) to store.
Micon appears.
4. To remove the channel from Memory, Press and hold (scan/mem) to
remove. Micon disappears.
Drop-Out Delay
While scanning, the radio stops at a busy channel and receives a signal. When
the received signal is over, the unit will wait for 2 seconds for the return of the
signal, otherwise, the radio resumes scanning.

19
Operation
UHF CB RadioUNIDEN UH820SX-NB/UH820SX-2NB
Programming the Instant Priority Channel
Select the Channel you want to store as the Instant Priority Channel by
pressing (ch) or .
Press and hold (inst) for 1.5 seconds to program the channel. PRI icon
appears.
Recalling the Instant Channel
Momentarily press the (inst) button to return to the Instant Channel.
Monitor
This feature enables users to listen in for weak signals on the current
channel at the press of a button.
To use monitor,
• For continuous listening.
Press and hold (LIGHT/MON).
A double tone beep will be heard and
the receiver circuit will stay open, letting
in both the noise & weak signals.
• RX ashes.
• To return to normal receive mode
press and hold (LIGHT/MON).
TX RX
GS
SCAN
M
BCL
VOX
HI
PRI
C
D
FULL
M
Power On/Off
M
Volume
M
Squelch
M
Selecting a Channel
TX
M
To Transmit
and Receive - 1
RX
M
To Transmit and
Receive - 2
To Operate In Duplex
Mode (Repeaters) - 1
To Operate In Duplex
Mode (Repeaters) - 2
HI
Transmit Power - 1
HI
Transmit Power - 2
GS
M
Scanning
RX
SCAN
M
Open Scan (OS) Mode
GS
Group Scan (GS) Mode
RX
M
Monitor

20
Operation
UNIDEN UH820SX-NB/UH820SX-2NB UHF CB Radio
CTCSS
CTCSS is a feature that allows a group
to talk to each other without hearing
other users on the same channel.
1. Select desired channel.
2. Press (menu) two times. DCS/CTCSS
setting ashes.
3. Press (ch) or or (vol) or to change
the selection.
4. Press & hold (menu) to save and exit.
NOTE
Select oF to turn DCS/CTCSS off for the selected channel.
DCS
DCS is a digital extension of CTCSS.
It provides 104 extra, digitally coded,
squelch codes that follow after the 38
CTCSS codes. CTCSS 1-38, followed by
DCS 1-104.
Follow the steps for changing CTCSS
code but select DCS code as desired.
NOTE
Channels 05 and 35 are used for emergency channels. CTCSS
and DCS will not operate on these two channels.
M
C
CTCSS - 1
M
C
CTCSS - 2
M
D
DCS - 1
M
D
DCS - 2
VOX
VOX
VOX
VOX - 2
Vibrate Alert Call Tone Roger Beep
Key Beep
M
Keylock
GS
M
Scanning
M
C
CTCSS - 1
M
C
CTCSS - 2
M
D
DCS - 1
M
D
DCS - 2
VOX
VOX
VOX
VOX - 2
Vibrate Alert Call Tone Roger Beep
Key Beep
M
Keylock
GS
M
Scanning
M
C
CTCSS - 1
M
C
CTCSS - 2
M
D
DCS - 1
M
D
DCS - 2
VOX
VOX
VOX
VOX - 2
Vibrate Alert Call Tone Roger Beep
Key Beep
M
Keylock
GS
M
Scanning
M
C
CTCSS - 1
M
C
CTCSS - 2
M
D
DCS - 1
M
D
DCS - 2
VOX
VOX
VOX
VOX - 2
Vibrate Alert Call Tone Roger Beep
Key Beep
M
Keylock
GS
M
Scanning