OWNER’S MANUAL
UNIDEN Model UH-090
Dual Band CB Radio (FM & AM)
UNIDEN Model UH-090 Dual Band CB Radio (FM & AM)
Contents
Introduction
Features 2
Preventive Maintenance 2
Troubleshooting 2
Controls / Connectors / Indicators
Controls and Connectors 3
Indicators 4
Included with Your UH-090 5
Operation
Setting the AM Squelch 6
Setting the FM Squelch 6
Monitor 7
Selecting a Channel 7
Transmitting 7
Call Function (FM Only) 7
Using Repeater Channels (FM Only) 8
Operating the UH-090 in Duplex Mode 8
Scanning 8
Open Scan (OS) Mode 9
Group Scan (GS) Mode 9
Programming Scan Channels 9
Selecting the Call Ring tone (FM Only) 10
Roger Beep (FM Only) 10
Busy Channel Lockout (FM Only) 10
VOX Operation (optional VOX headset required) (FM Only) 10
Programming the Instant Priority Channel 11
Recalling the Instant Channel 11
Dual Band Watch 11
CTCSS (FM Only) 11
Frequency Lists 12
FM UHF - CB Frequency List 12
AM - CB Frequency List 12
CTCSS Tone List for FM Mode 13
Specifications 13
Warranty 14
Technical Support and Service 14
3
1
Introduction
The Uniden UH-090 is designed to provide you with years of trouble free service. Its rugged components and
materials are capable of withstanding harsh environments.
We are certain that you will enjoy your UH-090. Please read this Operating Manual carefully to ensure you gain
the optimum performance of the unit.
Features
Transmitt & Receive FM 40CH (UHF-CB, TX Power
5w)
Transmitt & Receive AM 40CH (AM Band, TX Power
5w)
LCD Display with Backlight
Signal Strength Meter
RF Power Indicator
Speaker Audio Volume Level Meter
One touch FM or AM Mode selectable
Dual Band Watch
Instant Channel programmable separately FM/AM
Modes
One touch Instant Channel recalling
Duplex Capability (from CH01 - CH08 per channel)
FM Only
FM Group Scan and Priority CH Watch
FM Open Scan
AM Group Scan with Priority CH Watch
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 oversquelched.
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.
AM Open Scan
Scan Channel Memory On/Off separately with FM Open
Scan, FM Group Scan, AM Open Scan and AM Group Scan
Rotary Channel Select
Busy CH Lock-out Function - (FM Only)
Roger Beep Function On/Off (FM VOX Mode Only)
2 Different Ring Tones (FM Only)
38 Built-in CTCSS (Continuous T one Coded Squelch System)
codes that are user selectable (FM Only)
2 Levels Preset Squelch (FM Only)
Variable Squelch Level adjust (AM Only)
Volume Control with Power On/Off Switch
VOX (Voice Activated Function) (FM Only)
10 Steps VOX Mic sensitivity adjustment (FM Only)
Memory Backup if power fails
NOTE
Blackening may occur on the Liquid Crystal Display. If the UH-090 has been subjected to extreme
high temperature (above . This is not a fault. Normal LCD operation resumes when the
60°C)
temperature stabilizes back to standard operating conditions (0 to 55°C).
2
UNIDEN Model UH-090 Dual Band CB Radio (FM & AM)
Controls / Connectors / Indicators
2 3
1
6
5
4
Rotary
Channel
Selector
SLCT
STORE
TX
DUAL DUP
SLCT
FM/AM
DUAL
FM
SQT
MONGSSCAN
AM
SCAN
OS/GS
INST
MEM
BCL
VOX
CTCSS
MEM INST
INST SET
DUP
S/RF
FM SQ
CTCSS
VOL
SQ
VOL
Front
7
8
10
9
15
11
12
16
Rear
EXT.SP.
13
DC 13.8V
14
HF ANT.
UHF ANT.
Controls and Connections
Ref. Item Page Ref. Item Page
1
Liquid Crystal Display (LCD)
2
Rotary Channel Selector
3
On/Off Volume & AM Squelch
4
7
6
10
Memory Scan Channels and Duplex
On/Off
11
Instant Channel Recall and Instant
Channel Programming
8, 9
11
4
Push to Talk (PTT) Switch
5
Call Button
6
Monitor Button
7
SLCT - Select Button
8
FM/AM and Dual Band Watch
Scan On/Off and Open or Group
9
7
7
7
7, 11
8, 9
12
FM Squelch and CTCSS Tone
13
Extension Speaker
14
Power Input (13.8V DC)
15
HF Antenna Connection (AM)
16
UHF Antenna Connection (FM)
3
6, 11
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-
-
-
UNIDEN Model UH-090 Dual Band CB Radio (FM & AM)
Controls / Connectors / Indicators
17
18
VOX
CTCSS
35
25
24
26
27
23
FM
TX
DUAL DUP
SLCT
30 31
22
28
21
SQT
MONGSSCAN
32
20
AM
INST
MEM
BCL
29
33
19
34
Indicators
Ref. Item Page
16
VOX - Voice Operated Microphone MON - Monitor
CTCSS - Continuous Tone Coded MEM - Memory
17
10
11
Squelch System
19
INST - Instant Channel
20
AM - AM Mode
21
SQT - Tight FM Squelch
11
7
6
BCL - Busy Channel Lockout
22
FM - FM Mode
23
TX - Transmit
24
DUP - Duplex
25
Dual - Dual Band Watch Transmit RF Power
7
7
8
11
Ref. Item Page
28
29
SLCT - Select
30
31
- Ring tone
- Roger Beep
32
33
34
- Channel Number
35
36
- CTCSS Tone
S/RF - Receive Signal or
S/RF
36
VOL
37
7
9
10
10
10
10
7
11
-
26
GS - Group Scan VOL - Receive Audio Volume
SCAN - Scan mode
27
9
8
37
4
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