UHF RADIO TRANSCEIVER
UH400SX
UH400SX-RM
UH500SX
UH500SX-RM
OWNER’S MANUAL
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UNIDEN Model UH400SX, UH400SX-RM, UH500SX, UH500SX-RM OM
Contents
Introduction
Features............................................................................................................................................3
Preventive Maintenance....................................................................................................................4
Troubleshooting.................................................................................................................................4
Controls / Connectors...........................................................................................................................5
Indicators ...............................................................................................................................................9
Included with Your UHF CB Radio.....................................................................................................10
Optional Accessories .........................................................................................................................11
DIN-E Installation (UH500SX, UH500SX-RM only) ............................................................................12
Connecting the Microphone...............................................................................................................14
Mounting the MIC Hanger...................................................................................................................15
Operation
Turning on the Power .....................................................................................................................17
Setting the Manual Squelch (Base only).........................................................................................17
Setting the Auto Squelch.................................................................................................................18
Monitor ............................................................................................................................................19
Selecting a Channel........................................................................................................................19
Programming the Instant Priority Channel .....................................................................................20
Recalling the Instant Channel .........................................................................................................20
Transmitting.....................................................................................................................................20
Call Function ...................................................................................................................................20
Dual Watch......................................................................................................................................20
Using Repeater Channels...............................................................................................................21
Operating the UHF CB Radio in Duplex Mode ...............................................................................22
Scanning ........................................................................................................................................22
Open Scan (OS) Mode....................................................................................................................23
Group Scan (GS) Mode ..................................................................................................................23
Priority Watch..................................................................................................................................24
Add/Remove Channels from SCAN Memory .................................................................................24
40 RX Channels..............................................................................................................................25
Manual Programming......................................................................................................................25
Deleting a programmed RX Channel frequency .............................................................................25
Selecting the Call tone ....................................................................................................................26
Roger Beep.....................................................................................................................................26
Busy Channel Lockout ...................................................................................................................27
VOX Operation (optional VOX headset required) ...........................................................................27
CTCSS (Continuous Tone Coded Squelch System) ......................................................................28
DCS (Digital Coded Squelch)..........................................................................................................28
Beep On/Off ....................................................................................................................................29
Back Light .......................................................................................................................................29
LCD Contrast for Remote SPK/MIC................................................................................................30
UHF CB Channels & Frequency List .................................................................................................31
CTCSS & DCS Code List ....................................................................................................................32
Warranty...............................................................................................................................................33
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UNIDEN Model UH400SX, UH400SX-RM, UH500SX, UH500SX-RM OM
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UNIDEN Model UH400SX, UH400SX-RM, UH500SX, UH500SX-RM OM
Introduction
The Uniden UH400SX, UH400SX-RM, UH500SX and UH500SX-RM is designed to provide
you with years of trouble free service. Its rugged components and materials are capable of
withstanding harsh environments. Please read this Operating Manual carefully to ensure you
gain the optimum performance of the unit.
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.
Features
• Transmit & Receive FM 40CH
(UHF- CB, TX Power 5W)*
• 40 Programmable Receive channels
(450 - 512MHz in 12.5khz steps)
• LCD Display with Backlight
• LCD Backlight brightness control
(“HI”, “LO”, “Off”)
• 5 Different Call Tones
• 38 Built-in CTCSS (Continuous Tone
Coded Squelch System) and 104
additional DCS (Digital Coded Squelch)
codes that are user selectable
• Volume Control with Power On/Off
Push Switch
• Compact Size**
• Mobile DIN Size***
• Front Fire Speaker***
• Signal Strength/ Power Meter
• Instant Channel Programming
• One touch Instant Channel recalling
• Dual Watch with Instant Channel
• Duplex Capability (from CH01 - CH08
per channel)
• VOX (Voice Activated Function)
• 10 Step VOX Mic sensitivity adjustment
• Remote LCD Speaker Microphone
(Remote SPK/MIC)****
• Front and Rear MIC Jacks for
increased mounting options
• Variable Squelch Level adjust or Auto
Squelch with Remote SPK/MIC
• Group Scan and Priority Channel
Watch
• Open Scan
* Transmission is inhibited at CH22 and
CH23
** UH400SX
*** UH500SX
****The optional Remote SPK/MIC is
included with UH400SX-RM and UH-
500SX-RM models.
• Scan Channel Memory On/Off
separately with Open Scan, Group
Scan
• Rotary Channel Select
• Busy Channel Lock-out Function
• Roger Beep Function On/Off
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UNIDEN Model UH400SX, UH400SX-RM, UH500SX, UH500SX-RM OM
Introduction
Preventive Maintenance:
The following system checks should be made every six to twelve months:
•
•
•
•
Check the Standing Wave Ratio (SWR).
Inspect the tightness of all electrical connections.
Inspect the antenna coaxial cable for wear or breaks on the shielding.
Inspect the tightness of all screws and other mounting hardware.
Troubleshooting:
Should the unit malfunction or perform poorly, follow these procedures:
If the transceiver is completely inoperative: Check the power cord and fuse.
If there is trouble with receiving: Check the VOLUME control setting. Be sure the SQUELCH is
adjusted properly. Possibly the radio is over-squelched.
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.
Blackening may occur on the Liquid Crystal Display if the UHF CB Radio or
Remote SPK/MIC has been subjected to extreme high temperature (above
60°C). This is not a fault. Normal LCD operation resumes when the temperature
stabilizes back to standard operating condition (0-55°C).
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UNIDEN Model UH400SX, UH400SX-RM, UH500SX, UH500SX-RM OM
Controls/Connectors
UH400SX Front View
1
2
3
4
5
6
8
10
7
9
UH500SX Front View
1
2
4
6
7
8
10
3
5
9
Controls and Connectors
6. SCAN - Scan On/Off
1. Rotary CHANNEL Selector
OS/GS - Open or Group Scan
7. Liquid Crystal Display (LCD)
8. SQ - Rotary Squelch control
9. VOL - Rotary Volume control
ON/OFF - On/Off PUSH control
10. MIC - Front Microphone Jack
2. MENU/ENTER - Menu and Select
Button
3. DUAL - Dual Watch
MON - Monitor Button
4. DCS/CTCSS - DCS and CTCSS Tone
Button
5. MEM - Memory Scan Channels
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UNIDEN Model UH400SX, UH400SX-RM, UH500SX, UH500SX-RM OM
Controls/Connectors
UH400SX Rear View
UH500SX Rear View
12
13
13
12
11
11
14
14
Connectors
11. Power Input Connection (13.8VDC)
12. Ext. Speaker Jack
13. Rear MIC Jack
14. UHF Antenna Connection
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UNIDEN Model UH400SX, UH400SX-RM, UH500SX, UH500SX-RM OM
Controls/Connectors
Remote LCD Speaker Microphone (Remote SPK/MIC)
(optional accessory, included with UH400SX-RM, UH500SX-RM)
15
16
23
24
17
25
27
29
26
28
30
18
20
19
21
22
31
Controls and Connectors
15 CALL - Call Tone Button
16 INST - Instant Channel Button
17 PTT - Push To Talk Button
18 MENU/ENTER - Menu and Select Button
19 MEM - Memory Scan Channel
20 SCAN - Scan Button
OS/GS - Open Scan/Group Scan
21 MICROPHONE
26 POWER - Power ON/OFF Button
27 SQL - Auto Squelch
MON - Monitor Button
28 DCS/CTCSS -- DCS & CTCSS Button
DUAL - Dual Watch Button
22 SPEAKER
29
- Select Up and Down Buttons
23 Liquid Crystal Display (LCD)
30 RJ45 type plug
31 Front MIC Jack Cover
24 VOL
- Volume Up Button
(for Remote SPK/MIC)
25 VOL
- Volume Down Button
(for Remote SPK/MIC)
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UNIDEN Model UH400SX, UH400SX-RM, UH500SX, UH500SX-RM OM
Controls/Connectors
Standard Microphone
16
15
17
30
21
31
Controls and Connectors
15 CALL - Call Tone Button
16 INST - Instant Channel Button
17 PTT - Push To Talk Button
21 MICROPHONE
30 RJ45 type plug
31 Front MIC Jack Cover
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UNIDEN Model UH400SX, UH400SX-RM, UH500SX, UH500SX-RM OM
Indicators
UH500SX and UH400SX LCD (not to scale)
19 17
21
16
20
18
15
14
12
1
3
13
11
2
4
5
7
10
6
8
9
Remote MIC LCD
22
9
20
16
18
8
17
6
2
10
3
12
11
5
14
4
7
Indicators
1. TX - Transmit
13. CTCSS -Continuous Tone
2. DUAL - Dual Watch
3. SCAN - Scan mode
4. Channel Frequency
5. GS - Group Scan
6. INST - Instant Channel
7. PRI - Priority Channel
8. M - Channel in Memory
9. Channel Number
Coded Squelch System
14. BCL - Busy Channel Lockout
15. VOX - Voice Operated Microphone
16. DCS - Digital Coded Squelch
17. MON - Monitor
18. RSQ - Remote Mic Squelch
19. SQT - Tight Squelch Level
20. BUSY - Channel Active
21. DUP - Duplex Channel
22. CALL - Call Tone
10. DCS/CTCSS Code Number
11. S/RF- Receive Signal or Transmit
12. Signal Power Level
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UNIDEN Model UH400SX, UH400SX-RM, UH500SX, UH500SX-RM OM
Included with your UHF CB Radio
Microphone Hanger & Screws
Washers and spare fuse
Standard Microphone
UHF CB Radio Owners Manual
DIN-E Sleeve, DIN-E rubber
ring and keys for vehicle
installation (UH500SX and
UH500SX-RM
Mounting Bracket,
Mounting Screws, Washer Stars
And Screws
(UH500SX and UH500SX-RM
models only)
Mounting Bracket,
Mounting Screws, Washer Stars
And Screws
(UH400SX and UH400SX-RM
models only)
models only)
Remote LCD Speaker Microphone
(UH400SX-RM and UH500SX-RM
models only)
DC Power Cord with fuse
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UNIDEN Model UH400SX, UH400SX-RM, UH500SX, UH500SX-RM OM
Optional Accessories
Optional Accessories
DIN Mounting Kit (DMK8990)
for compact models
Remote LCD Speaker
Microphone (RM100)
External Speaker (MS100)
Extension cable kit RM100
(EC100)
• VOX Headset (VM091)
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UNIDEN Model UH400SX, UH400SX-RM, UH500SX, UH500SX-RM OM
DIN-E Installation (UH500SX, UH500SX-RM Only)
Mounting Using the DIN-E Sleeve
If you are unsure about how to install your UH500SX in your vehicle using the DIN-E sleeve,
consult your automobile manufacturer, dealer, or a qualified installer. Before
installing, confirm that your UH500SX fits in the desired mounting area and you have all the
necessary materials to complete the task. Your UH500SX requires a 53 x 183 x 135 mm
mounting area. Allow an additional 60 mm space behind the unit for connectors and wires.
1. Remove the bracket if previously attached.
2. Install the DIN-E sleeve into the opening in your dashboard, lip facing out.
3. Push out the top and bottom tabs to hold the sleeve firmly in place.
4. Remove the flat rubber ring fitted around the cabinet sides near the front of the UH500SX.
Fit the supplied DIN-E rubber ring in it’s place. When fitted the rubber ring will act as a
seal against the DIN-E sleeve. At the left and right sides of the ring there will be a slot space.
The slots in the fitted DIN-E Rubber Ring will enable proper removal of radio from the
DIN-E sleeve.
5. Before inserting the UH500SX in the sleeve, attach the cable from the
previously mounted antenna. Attach the DC Power leads. RED goes to a positive (+)
connection on your fuse block while BLACK connects to the vehicles chassis
ground (-). Be sure all the connections are routed away from any potentially
pinching or slicing sheet metal.
6. Slowly slide the UH500SX into the sleeve until it locks in place.
If you plan to use the Rear MIC Jack or connect an external speaker at a later time,
expect to remove the unit for ease of making those connections.
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UNIDEN Model UH400SX, UH400SX-RM, UH500SX, UH500SX-RM OM
DIN-E Installation (UH500SX, UH500SX-RM Only)
Removing the UH500SX from the DIN-E Sleeve
If you plan to use the Rear MIC Jack or connect an external speaker, at a later time, you should
plan to remove the UH500SX from the DIN-E sleeve. This is easily done using the provided
Removal Keys.
Fully insert both Removal Keys straight into the slot spaces provided by the DIN-E rubber ring
on the left and the right edges of the radio’s dress panel. You cannot remove the radio if only one
key is available.
Press in fully and the radio will unlock from the sleeve making withdrawal from the
sleeve possible. Store the keys in a safe place for future use.
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UNIDEN Model UH400SX, UH400SX-RM, UH500SX, UH500SX-RM OM
Connecting the Microphone
UH400SX
UH500SX
FRONT MIC JACK
Push the MIC plug at the end of the microphone into the MIC jack until the connection locks into
place. Gently tug the MIC cord to test that the connection is locked. Use the Front MIC Jack
cover which is threaded onto the MIC cord to seal the MIC jack entry from dust.
Disconnecting the MIC from the Front MIC Jack
Pull away the threaded rubber collar and move it down along the cord. Using the flat blade
of a screwdriver or similar object carefully press the lock tab at the bottom (UH500SX) or left
(UH400SX) side of the MIC plug and push it upwards (UH500SX) or to the right (UH400SX). At
the same time tug on the MIC cord to draw back the MIC plug.
REAR MIC JACK
Use the Rear MIC Jack if the main base is mounted where a front MIC connection is intrusive or
if you wish to use the Remote LCD Speaker MIC with an optional extension cable.
Peel the dust cover from the rear MIC jack. Push the MIC plug at the end of the microphone
into the MIC jack until the connection locks into place. An optional 2m extension cable kit is
available to enable mounting the main base in a hidden location.
The Front and Rear MIC JACKs can not be used at the same time.
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UNIDEN Model UH400SX, UH400SX-RM, UH500SX, UH500SX-RM OM
Mounting the MIC Hanger
The Microphone Hanger comes in two parts. How and where you mount the MIC hanger will
determine which parts to use.
Conventional Mounting with Screws
Use the front part of the MIC Hanger only.
Locate a suitable mounting position and mark and drill two 3mm holes.
Fix the MIC Hanger into place with screws.
Conventional Mounting with Double Sided Tape (not supplied)
High quality Double-Sided tape can be found at good retail stores.
Secure the front and back pieces of the MIC Hanger using the supplied binding screws.
Locate a suitable mounting position.
Apply high quality Double-Sided tape onto the flat area of the MIC Hanger back piece and then
press firmly to the mounting position.
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UNIDEN Model UH400SX, UH400SX-RM, UH500SX, UH500SX-RM OM
Mounting the MIC Hanger
MIC Hanger mounted over MIC Cable
The curly cord of the Standard MIC and Remote SPK/MIC can extend up to 1.5m.
For practical mounting of the MIC Hanger using the threaded cord technique it is highly
recommended to use this technique with the optional Extension Cable.
Using the second part of the MIC Hanger as a template mark
and drill a single 13mm hole. The hole needs to be large
enough (13mm min) to allow for the MIC plug of the
microphone to fit through.
Feed RJ45 MIC plug through the hole and connect to the
optional Extension Cable. Connect the other end of the
Extension Cable to a MIC Jack on the radio.
Mount the MIC Hanger using the Screw (single part) or
Double Sided Tape (two part) option described on the
previous page, making sure the MIC Hanger is centred over
the hole where the MIC cable is fed through. The single or two
part MIC assembly has a routing cavity to allow fitting over the
MIC cable.
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UNIDEN Model UH400SX, UH400SX-RM, UH500SX, UH500SX-RM OM
Operation
Turning on the Power
Press and hold the ON/OFF control at the
base or the [POWER] button on the Remote
SPK/MIC.
Setting the Manual Squelch (base only)
Turn the outer ring of the SQ control at the base to adjust the Squelch.
You must select a channel which is not in use before setting the SQUELCH control.
(see p.19 for “Selecting a Channel”).
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.
If you turn the Squelch
fully counterclockwise it
lowers the ‘Squelch Gate’
to the extent that all
signals get through -
weak, medium and strong
signals and noise.
To set the ‘Squelch Gate’
to the desired level, turn
the squelch knob
counterclockwise until you
hear noise. Then carefully
turn the Squelch knob
clockwise until the noise
fades. Now only strong
signals get through.
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UNIDEN Model UH400SX, UH400SX-RM, UH500SX, UH500SX-RM OM
Operation
Setting the Auto Squelch
The Auto Squelch feature is available only when the Remote SPK/MIC is connected. It has an
Off setting and 3 preset squelch levels:
oFF - Auto Squelch OFF
1
2
3
- max sensitivity (min squelch)
- med sensitivity (med squelch)
- min sensitivity (max/tight squelch)
It requires no adjustment.
1. Press [SQL/MON] on the Remote SPK/MIC. The squelch setting flashes.
2. Rotate the channel knob at the base or press
the setting. RSQ icon displays when Auto Squelch is active. If tight squelch is
selected SQT icon will also flash.
on the Remote SPK/MIC to change
3. Press [MENU/ENTER] to store the setting.
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UNIDEN Model UH400SX, UH400SX-RM, UH500SX, UH500SX-RM OM
Operation
Monitor
Press and hold [DUAL/MON] at the base or
[SQL/MON] on the Remote SPK/MIC to
open the squelch and receive all weak signals.
Press and hold [DUAL/MON] at the base or
[SQL/MON] on the Remote SPK/MIC again
to cancel.
Selecting a Channel
Turn the Rotary Channel Selector at the base
or press
on the Remote SPK/MIC to
select the desired channel.
For your reference a list of the available channels, corresponding frequencies
and guidelines for their use is printed on page 31. For Australia, Channels 05
and 35 are reserved for Emergency Calls.
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UNIDEN Model UH400SX, UH400SX-RM, UH500SX, UH500SX-RM OM
Operation
Programming the Instant Priority Channel
Turn the Rotary Channel Selector at the base or press
on the Remote SPK/MIC to select the Priority Channel you
prefer.
CALL INST
Press and hold [INST] button on the microphone for 3
seconds to store the new setting. INST icon appears.
PTT
Recalling the Instant Channel
Momentarily press the [INST] button on the microphone at
any time to return to the Instant Channel.
Transmitting
The UHF CB Radio uses the 40 UHF-CB Channels (Channels
22 and 23 are for telemetry and telecommand applications.
Transmit is inhibited on these channels).
Select the desired channel. Press the microphone’s PTT
button and speak normally into the microphone. Hold it
approx. 7cm from your mouth. Release the PTT button to
end the transmission and listen for a reply.
Call Function
Press the microphone Call Button. A three second ringing tone
will be transmitted.
You may select from 5 types of tones (see p.26).
Current regulations require calling tones to be restricted to one transmission per
minute. If a second transmission is attempted within one minute then an error tone will
sound.
DUAL Watch
Dual watch will continuously monitor the Instant channel no matter what other
channel is on (see Programming the Instant Priority Channel above)
Press [DUAL/MON] on the base or press and hold [DCS/CTCSS/DUAL] on the Remote SPK/
MIC. DUAL icon appears and a short tone beep is heard.
To cancel DUAL Watch press [DUAL/MON] on the base or press and hold
[DCS/CTCSS/DUAL] on the Remote SPK/MIC. DUAL icon disappears.
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UNIDEN Model UH400SX, UH400SX-RM, UH500SX, UH500SX-RM OM
Operation
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 that partially blocks your transmitted signal, the probability of another radio
receiving the signal is very slim. Hills, 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 of a Repeater
Station (Duplex).
The signal coming from your radio is received by the Repeater Station and the re-transmitted at
the same time on another channel. This operation is called “Duplexing”.
For example,
CH01 on Duplex Mode will Receive on CH01 but Transmit on CH31
CH02 on Duplex Mode will Receive on CH02 but Transmit on CH32 etc...
If you transmit on CH01 Duplex mode, you are actually transmitting on CH31 the
repeater station down-coverts your signal and retransmits on CH01.
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UNIDEN Model UH400SX, UH400SX-RM, UH500SX, UH500SX-RM OM
Operation
Operating the UHF CB Radio in Duplex Mode
For this example we are adopting CH01 as the channel being used in your area for
repeater use.
1. Press [MENU/ENTER]. The duplex
setting flashes.
2. Turn the Rotary Channel Selector
at the base or press
on the
Remote SPK/MIC to change the
setting between ON or OFF on the
base or “0” or “r” on the
Remote SPK/MIC.
3. Press [MENU/ENTER] to store the setting.
4. Press and hold [MENU/ENTER] to exit
from the menu mode. Only channels
01 - 08 are available for Duplex.
Check with your local Retailer for information on available repeaters.
Scanning
The UHF CB Radio has a scanning feature
that allows you to search for active channels
automatically.
Furthermore, the UHF CB Radio 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. Press [SCAN/OS/GS] and
Scanning starts.
The SCAN icon appears.
The scan direction can be changed
at any time by rotating the channel
selector left or right or pressing
on the Remote SPK/MIC.
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UNIDEN Model UH400SX, UH400SX-RM, UH500SX, UH500SX-RM OM
Operation
Open Scan (OS) Mode
Allows continuous scanning of all selected channels.
If an active channel is found, scanning will stop on that
channel. If the received signal ceases, the unit will wait 3
seconds for the signal to return, otherwise scanning resumes.
After transmission in scan mode, the unit will wait 20 seconds for the signal to return, otherwise
scanning resumes.
To skip the active channel, turn the Rotary Channel Selector at the base or press
on the
Remote SPK/MIC momentarily. To deactivate SCAN, press [SCAN/OS/GS].
If SCAN is deactivated while on an active channel, the UHF CB Radio will stay on
that active channel. If no channels are active, the UHF CB Radio will reinstate the
starting channel.
OS Mode is indicated by the absence of the GS icon.
Group Scan (GS) Mode
Includes the accessory feature Priority Watch which allows you to monitor the Instant Priority
Channel while scanning (see p.20 for setting Instant Priority Channel and p.24 to turn on
Priority Watch).
To use GS Mode Scanning, press and hold
[SCAN/OS/GS]. GS icon appears on the
display.
GS Scanning checks the Instant Priority
Channel for activity regularly when Priority
Watch is ON.
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, UHF CB Radio will continue
monitoring the Priority Channel for activity
while listening to the active one.
To deactivate SCAN, press the
[SCAN/OS/GS] button.
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UNIDEN Model UH400SX, UH400SX-RM, UH500SX, UH500SX-RM OM
Operation
Priority Watch
To switch Priority Watch On/Off;
1. Press [MENU/ENTER] two times. The Priority Watch setting flashes.
2. Turn the Rotary Channel Selector at the base or press
change the setting between ON or OFF.
on the Remote SPK/MIC to
3. Press [MENU/ENTER] to store the setting.
4. Press and hold [MENU/ENTER] to exit from the menu mode.
If SCAN is deactivated while it is tuned to an active channel, the UHF CB Radio
will stay on that active channel.
If none of the channels are active, the UHF CB Radio will reinstate the scan start
channel.
If OS/GS Scanning is initiated when there are no channels programmed in
OS/GS memory, an error tone will be heard and scanning will not start (see
Programming Scan Channels - below).
Add/Remove Channels from SCAN Memory
Select which Scanning Mode you wish to use
- OS or GS.
Select the channel you want to store.
Press to [MEM] store. MEM icon appears
and a short tone beep is heard.
To remove the channel from SCAN memory,
press [MEM] once more.
The MEM icon disappears.
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UNIDEN Model UH400SX, UH400SX-RM, UH500SX, UH500SX-RM OM
Operation
40 RX Channels
The radio has 40 receive only channels (CH41 to CH80) which can be programmed with
frequencies ranging from 450-512MHz (in 12.5kHz steps).
Manual Programming
Turn power off.
Press and hold [DUAL/MON] at the base
or [SQL/MON] on the Remote SPK/MIC
while turning power on (pressing power
switch on the base or [POWER] on the
Remote SPK/MIC).
The channel indicator flashes the lowest
available empty channel. You may use
the rotary channel selector at the base or
on the Remote SPK/MIC to select
another channel from CH41 - CH80.
Press [MEM]. The MHz digits of the
frequency indicator flashes. Turn the rotary
channel selector at the base or press
on the Remote SPK/MIC to select the desired
MHz.
Press [ /MENU/ENTER] and [SCAN/OS/GS/ ] at the base or [ /OS/GS/SCAN] and
[DCS/CTCSS/DUAL/ ] on the Remote SPK/MIC to change from the MHz digits to the kHz
digits of the frequency, turn the rotary channel selector at the base or press
on the
Remote SPK/MIC to select the desired kHz.
When finished press [MEM]. The channel indictor flashes. Turn rotary channel selector at the
base or press on the Remote SPK/MIC to select next channel for programming or press
and hold [MENU/ENTER] to store setting.
A confirmation tone sounds. The channel is also entered into OS scan memory.
Deleting a programmed RX Channel frequency:
Follow the steps in Manual Programming to enter a frequency for a desired channel.
Select 000 for the MHz digits and then press [MEM]. Select another channel to edit or press
and hold [MENU/ENTER] again to exit programming mode.
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UNIDEN Model UH400SX, UH400SX-RM, UH500SX, UH500SX-RM OM
Operation
Selecting the Call tone
1. Press [MENU/ENTER] four times.
The call tone setting flashes.
2. Turn the Rotary Channel Selector at
the base or press
on the
Remote SPK/MIC to change the
setting between 1, 2, 3, 4 and 5.
3. Press [MENU/ENTER] to store the setting.
4. Press and hold [MENU/ENTER] to exit
from the menu mode.
If a button is not pressed within 10 seconds the UHF CB Radio will automatically
exit the Menu Mode.
Roger Beep
1. Press [MENU/ENTER] six times.
The roger beep setting flashes.
2. Turn the Rotary Channel Selector
at the base or press
on the
Remote SPK/MIC to change the
setting between ON or OFF.
3. Press [MENU/ENTER] to store the
setting.
4. Press and hold [MENU/ENTER] to
exit from the menu mode.
If a button is not pressed within 10 seconds the UHF CB Radio will automatically
exit the Menu Mode.
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UNIDEN Model UH400SX, UH400SX-RM, UH500SX, UH500SX-RM OM
Operation
Busy Channel Lockout
If the channel is already in use,
you can prevent the UHF CB Radio
from transmitting . This is particularly
important when using CTCSS/DCS.
1. Press [MENU/ENTER] five times.
The BCL setting flashes.
2. Turn the Rotary Channel Selector at
the base or press
on the Remote
SPK/MIC to change the setting between
ON or OFF.
3. Press [MENU/ENTER] to store the setting.
4. Press and hold [MENU/ENTER] to exit
from the menu mode.
If a button is not pressed within 10 seconds the UHF CB Radio will automatically
exit the Menu Mode.
VOX Operation (optional VOX headset required)
1. Press [MENU/ENTER] three times.
The VOX setting flashes.
2. Turn the Rotary Channel Selector at
the base or press
on the
Remote SPK/MIC to change the
VOX sensitivity (oF (OFF), 1
(highest) - 9 (lowest)).
3. Press [MENU/ENTER] to store the setting.
4. Press and hold [MENU/ENTER] to exit
from the menu mode.
5. Disconnect standard or Remote MIC and
connect the VOX headset.
• The VOX function works only with base in place of the standard MIC and Remote
SPK/MIC.
• If a button is not pressed within 10 seconds the UHF CB Radio will
automatically exit the Menu Mode.
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UNIDEN Model UH400SX, UH400SX-RM, UH500SX, UH500SX-RM OM
Operation
CTCSS (Continuous Tone
Coded Squelch System)
Turn the Rotary Channel Selector at
the base or press
on the Remote
SPK/MIC the desired channel to use CTCSS.
Press [DCS/CTCSS].
CTCSS icon appears.
Turn the Rotary Channel Selector at
the base or press
on the Remote
SPK/MIC to select the desired CTCSS code
01 - 38.
Press [DCS/CTCSS] once to store the new
setting.
To turn off CTCSS (or DCS) select the oF
code during setting.
DCS (Digitally Coded Squelch)
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 setting a CTCSS code. Turn the Rotary Channel Selector at
the base or press
on the Remote SPK/MIC until the DCS codes appear.
Press [DCS/CTCSS] to set. The DCS icon and code will display.
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UNIDEN Model UH400SX, UH400SX-RM, UH500SX, UH500SX-RM OM
Operation
Beep On/Off
1. Press [MENU/ENTER] seven times. The
Beep setting flashes.
2. Turn the Rotary Channel Selector at the
base or press
SPK/MIC to
on the Remote
change the setting between ON or OFF.
3. Press [MENU/ENTER] to store the
setting.
4. Press and hold [MENU/ENTER] to exit
from the menu mode.
Back Light
1. Press [MENU/ENTER] eight times. The
Backlight setting flashes.
2. Turn the Rotary Channel Selector at the
base or press
on the Remote
SPK/MIC to change the setting between
OFF, LO and HI.
3. Press [MENU/ENTER] to store the
setting.
4. Press and hold [MENU/ENTER] to exit
from the menu mode.
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UNIDEN Model UH400SX, UH400SX-RM, UH500SX, UH500SX-RM OM
Operation
LCD Contrast for Remote SPK/MIC
The LCD Contrast option becomes available
only when the Remote SPK/MIC is con-
nected.
1. Press [MENU/ENTER] nine times. The
LCD Contrast setting flashes.
2. Turn the Rotary Channel Selector at the
base or press
on the Remote
SPK/MIC to change the setting between
01 (low contrast) to 10 (high contrast).
3. Press [MENU/ENTER] to store the
setting.
4. Press and hold [MENU/ENTER] to exit
from the menu mode.
The base LCD has a fixed contrast which cannot be changed.
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UNIDEN Model UH400SX, UH400SX-RM, UH500SX, UH500SX-RM OM
UHF CB Channels & Frequencies
Channels 5 and 35 are used for emergency channels. CTCSS and DCS will
not operate on these channels.
Please follow these guidelines for channel use in Australia:
• Channels 05 and 35 are Emergency Channels.
• Channel 11 is a Calling Channel.
• Channels 22 and 23 are for telemetry and telecommand applications
and TX is inhibited on these channels.
General communication is accepted on all other channels with
these guidelines:
• Channel 40 - road channel (Australia).
• Channels 01-08 (and 31-38) are repeater channels.
Simplex Mode
Transmit / Receive
Frequency (MHz)
Duplex Mode
Transmit
Frequency (MHz)
Simplex Mode
Transmit/Receive
Frequency (Mhz)
CH No.
CH No.
1
2
476.425
476.450
476.475
476.500
476.525
476.550
476.575
476.600
476.625
476.650
476.675
476.700
476.725
476.750
476.775
476.800
476.825
476.850
476.875
476.900
477.175 CH31
477.200 CH32
477.225 CH33
477.250 CH34
477.275 CH35
477.300 CH36
477.325 CH37
477.350 CH38
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
476.925
476.950 (RX only)
476.975 (RX only)
477.000
3
4
5
477.025
6
477.050
7
477.075
8
477.100
9
477.125
10
11
12
13
14
15
16
17
18
19
20
477.150
477.175
477.200
477.225
477.250
477.275
477.300
477.325
477.350
477.375
477.400
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UNIDEN Model UH400SX, UH400SX-RM, UH500SX, UH500SX-RM OM
CTCSS & DCS Code List
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UNIDEN Model UH400SX, UH400SX-RM, UH500SX, UH500SX-RM OM
Warranty
UNIDEN UH400SX, UH400SX-RM, UH500SX
and UH500SX-RM UHF CB TRANSCEIVER RADIO
Two Year Limited Warranty
IMPORTANT
Warrantor:
Evidence of the original purchase is required for warranty service.
Uniden Australia Pty Limited ABN 58 001 865 498
Uniden New Zealand Limited
Elements of Warranty: Uniden warrants to the original retail owner for the duration of this
warranty its UH400SX, UH400SX-RM, UH500SX and UH500SX-RM UHF CB TRANSCEIVER
RADIO (hereinafter referred to as the Product), to be free from defects in materials and crafts-
manship with only the limitations or exclusions set out below.
Warranty Duration: This warranty to the original retail owner only is only valid in the original
country of purchase and shall be of no further effect 2 years 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 a part of a system not
manufactured by Uniden. (F) Only available in the original country of sale.
Parts Covered: This warranty covers for two (2) years, the Product and included accessories.
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 provide for reimbursement or payment of incidental or consequential damages. This
EXPRESS WARRANTY is in addition to and does not in any way affect your rights under the
TRADE PRACTICES ACT 1974 (Cth) (Australia) or the CONSUMER GUARANTEES ACT (New
Zealand).
Procedure for obtaining performance or warranty: in the event that the Product does not con-
form to this warranty, the Product should be shipped or delivered, freight prepaid, with evidence
of original purchase (e.g. a copy of the sales docket) to the warrantor at:
UNIDEN AUSTRALIA PTY LTD
Service Division
UNIDEN NEW ZEALAND LTD
Service Division
345 Princes Highway,
Rockdale, NSW 2216
Fax (02) 9599 3278
150 Harris Road, East Tamaki,
Auckland
Fax (09) 274 4253
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© 2008 Uniden Australia Pty Limited/Uniden New Zealand Limited
Printed in China UTZZ01940ZZ(0)
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