Uniden Uh088sx Cb Tranciever Owners Manual

							2. Think of the Squelch control as a gate. If you turn SQUELCH
fully clockwise it raises the Squelch Gate so
that no signals get through.
3. If you turn the SQUELCH fully counter clockwise, it lowers the
Squelch Gate so that everything gets through - noise,
weak signals and strong signals.
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.
Operation
UNIDEN UHF CB Transceiver
1. To turn the unit ON, rotate volume clockwise.
Adjust volume to a comfortable level.
Setting the Squelch
9
You must select a
channel which is
not in use before
setting the SQUELCH
control.(see p.10) 
						

							SELECTING A CHANNEL
TRANSMITTING
USING REPEATER CHANNELS
Press or button to select a channel
Select the desired channel. Press the Microphones PTT button, hold it approx
7cm from your mouth and speak normally into the microphone.
The icon will light. Release the PTT button to end
the transmission and listen for a reply.
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.
The Signal coming from your radio is received by the Repeater Station and then retransmitted at the same time
on another channel. This operation is called Duplexing.
For example,
CH01 on Duplex Mode will Receive on CH 01 but Transmit on CH31
CH02 on Duplex Mode will Receive on CH 02 but Transmit on CH32 etc ....
If you transmit on CH01 Duplex mode, you are actually transmitting on CH31, the repeater station down-converts
your signal and retransmits on CH01.
Operation
UNIDEN UHF CB Transceiver
10
PTT 
						

							Operation
UNIDEN UHF CB Transceiver
11
Operating the uh088sx in Duplex Mode
Scanning
Open Scan (OS) Mode
For this example we are adopting CH01 as the channel
being used in your area for repeater use.
Press to switch Duplex On. The duplex icon DUP appears.
If Duplex is not required - press again to switch Duplex off.
Only channels 01 - 08 are available for Duplex
The uh088sx has a scanning feature that allows you to
search for active channels automatically.
Furthermore, the 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 and scanning starts.
The scan icon SCN appears.
Allows continuous scanning of channels stored in the Open Scan memory. If an active channel is found, scanning
will stop on that channel.
This example shows CH40 active.
If the received signal ceases, the unit will wait 3 seconds for the signal
to return, otherwise scanning resumes.
To skip the active channel, press momentarily. Scanning resumes.
To deactivate scan, press while scanning
or the PTT button on the microphone.Check with your local Retailer to
determine if there is a Repeater in your
area.
If SCAN is deactivated while on an
active channel, the uh088sx will stay
on that active channel. If no channels
are active, the uh088sx will reinstate
the starting channel. uh088sx 
						

							Operation
UNIDEN UHF CB Transceiver
12
Group Scan (GS) Mode
Allows you to monitor a priority channel while scanning.
To use GS Mode Scanning, press the 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 active.
If the received signal ceases, the unit will wait 3 seconds
for the signal to return, otherwise scanning resumes.
If scanning stops on a channel which is not a Priority channel,
uh088sx will continue monitoring the priority channel for
activity while listening to the active one.
eg CH40 becomes active.
If SCAN is deactivated while it is turned to an active channel, the uh088sx will stay on
that active channel. If none of the channels are active, the uh088sx will reinstate the
starting channel.
If GS is initiated when there are no channels programmed in GS memory, an error tone
will be heard and scanning will not start (see programming Scan Channels - below).
TOGGLES
TOGGLES 
						

							Operation
UNIDEN UHF CB Transceiver
13
Choosing a Priority Channel
Drop-out delay
The starting channel, when Group Scanning is initiated, is always the priority channel.
Changing the PRI channel setting while scanning
eg: PRI Channel is CH17 (476.825 Mhz)
a press , to select a higher channel (scanning pauses)
-or-
b. press , to select a lower channel
While scanning, the uh088sx 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. 
						

							Programming Scan Channels
1 Select which Scanning Mode you
wish to use on the channel.
OS or GS Mode
2. Select the channel you want to store.
3. Press and hold for 1.5sec. to store.
icon appears and a short tone
beep is heard.
4. To remove the channel form memory, press and hold for 1.5 sec. once more.
Two successive beeps are heard and the icon disappears. MEM
MEM
Operation
UNIDEN UHF CB Transceiver
14 
						

							Operation
UNIDEN UHF CB Transceiver
15
Channel Seeking Operation
Unlike normal scanning, CHANNEL SEEK is used more often when checking for active channels.
If a signal is detected, while seeking, the uh088sx will tune to that signal for 4 seconds only and the
resumes Seeking Operation.
Changing from SCAN to SEEK Mode Operation.
1 Firstly, activate scan mode by pressing
2. Press and hold until a beep is heard.
The SCN icon starts to flash.
3. If an active channel is detected the uh088sx will stop on that
channel for 4 seconds. (eg CH17)
4. After 4 seconds, the uh088sx will start seeking again for
active channels.
5. If you find the channel interesting, simply press either
the PTT switch or to stop the operation
before the 4 second timer elapses.
When is pressed again SEEK is still the mode of operation.
To change back to SCAN, while SEEKING, press and hold
until a beep is heard. The SCN icon stops flashing.
SEEK checks the same channel stored in SCAN
memory. Thus, you can Seek either in OS or GS Mode. 
						

							Operation
UNIDEN UHF CB Transceiver
16
Continuous Tone Coded Squelch System (CTCSS)
This feature allows signals to be received only from callers who have selected the same CTCSS code.
Press or to select the desired channel to use CTCSS.
Press and hold for 2 seconds. code flashes.
to select the desired CTCSS code 01 - 38.
Press once to store the new setting.
To turn CTCSS OFF please follow the above steps but select the desired CTCSS code oF (before code 01).CTCSS
Press or
Channels 05 and 35 are Emergency Channels.
CTCSS cannot be selected on these channels.
If a button is not pressed within 10
seconds the uh088sx will automatically
exit Select Mode. 
						

							Selective Calling (Optional Selcall PCB Required)
UNIDEN UHF CB Transceiver
17
Outline
Selective Calling (SELCALL)
Receiver Quieting (Tone Squelch)
Call Alarm
Tone Squelch Scanning
Tone Calling
Group Calling Capabilityis a special Sequential Tone Squelch System that allows the user to
receive/transmit calls selectively from/to an individual or group, on a shared busy channel.
The uh088sx has an
Exceptional features, like Receiver Quieting, Tone Squelch Scanning, Tone and Group Calling make the uh088sx
superior to any transceivers in its class.
When activated, it automatically mutes the receiver audio circuit of the radio.
It will stay in this ‘Quiet’ mode as long as the SELCALL tone code (SELCALL ID) required to open the muting
circuit is not received.
When a received code matches to your SELCALL ID, an alarm (CA Alert) will be emitted informing you that a
caller is on the channel.
Scans only tone squelched Channels.
Allows you to selectively call another radio.
Transmits and Responds to Group Calls.Optional Selective Calling system. 
						

							Tables
UNIDEN UHF CB Transceiver
18
NOTE: Channel 05 and 35 are not CT CSS programmable
CTCSS TONE List
Tone
No.
01
02
03
04
05
06
07
08
09
10
11
1213
14
15
16
17
18
19
20
21
22
24
2526
27
28
29
30
31
32
33
34
35
36
37
38 23 OFF
67.0
71.9
74.4
77.0
79.7
82.5
85.4
88.5
91.5
94.8
97.4
100.0
Tone
Frequency (Hz)Tone
No.Tone
Frequency (Hz)Tone
No.Tone
Frequency (Hz)
00 (’oF’)
103.5
107.2
110.9
114.8
118.8
123.0
127.3
131.8
136.5
141.3
146.2
151.4
156.7162.2
167.9
173.8
179.9
186.2
192.8
203.5
210.7
218.1
225.7
233.6
241.8
250.3
CH No.
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
2021
22
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40 23476.925
476.950
476.975
477.000
477.025
477.050
477.075
477.100
477.125
477.150
477.175
477.200
477.225
477.250
477.275
477.300
477.325
477.350
477.375
477.400476.425
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
CH No.
477.175 CH31
477.200 CH32
477.225 CH33
477.250 CH34
477.275 CH35
477.300 CH36
477.325 CH37
477.350 CH38
Simplex Mode
T ransmit / Receive
Frequency (MHz)Duplex Mode
T ransmit
Frequency (MHz)Simplex Mode
T ransmit / Receive
Frequency (MHz)
Note: Channel 05 and 35 are Emergency Channels and Channel 11 is a calling channel
FM - CB Frequency List - Australia & New Zealand