Uniden Sundowner UH-100 User manual

unid~n@ UHF CB TRANSCEIVER
OWNER'S MANUAL
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"" SUNDOWNER UH-100
SCANNING
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Built-In SELCALL

Table of Contents
Controls IIndicators IConnectors 3
Controls 3
Indicators 4
Connectors 5
Introduction .""..."""'.".'...".".".""""".""'.". 6
Included with your UH-100 "..."""."", 7
Operation 8
SettingtheSquelch""."""". 8
Selecting a Channel 9
Channel Auto Step... 9
Transmitting 10
Using Repeater Channels 10
Scanning 13
Choosing a Priority Channel 15
Drop-Out Delay 15
Programming Scan Channels 16
Channel Seeking Operation 17
Voice Scrambler 18
LCD Backlight Level Control 19
Selective Calling 20
This is UH-100 Calling 21
Making a Call "21
Acknowledgment Tone , """"""""""""""""'" 22
10 SelcalllD Memory.".""""""""""""""""""""""""" 23
Transmitting ID from Memory 24
ReceivingCall " , 25
Replying using SELCALL "26
Group Calling 28
Tone Squelch (Receiver Quieting) 29
Activating the Tone Squelch (Receiver Quieting) 30
Receiving Calls when in Quiet Mode 30
Tone Squelch Scanning 31
SELCALL Advance Programming 32
Radio ID Programming 34
Tone Period Programming 35
Lead-In Delay Programming """""""'" 36
Lead-In Tone Programming 37
Alarm Mode Programming ,39
Group Call Mode Programming 41
Caller ID Decoding """"""""""""""""""""""""""""""""""""""""'" 42
1

Service 43
Care and Maintenance 44
Notice""""""""""""""""""""""""""" 44
Preventive Maintenance 44
Troubleshooting 44
Memory Backup """"""""""""""""""""""" 44
UHF CB Channel Information 45
SIMPLEX Operating Mode 45
DUPLEX Operating Mode 46
Specifications 47
General 47
Measurement Conditions """""""""""""'" 48
TransmitterSection """"""""""""""""""'" 48
Receiver Section 48
SELCALL 49
Warranty 50
2

Controls IIndicators IConnectors
Controls
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1. LIQUIDCRYSTALDISPLAY(LCD)PANEL- IndicatorsforTX,CAL,MEM,TSQ,
GS (OS), SCN, PRI, Channel Number, Frequency (SELCALLCode), Signal
Strength Level (S), Transmit Power Level (RF),DUPand Scrambler.
2. UP/DOWNCHANNELSELECTOR-These controls are used to select the desired
communication channel.
3. ON/OFF,VOLUME&SQUELCHCONTROLS
ON/OFF&Volume Control (Centre Knob)
Turns the UH-100powerON or OFF and adjusts the volume.
Squelch Control (Outer Ring)
Eliminates background noise in the absence of an incomingsignal.
4. PUSH-TO-TALK(PTT)SWITCH-Press to transmit and release to receive.
5. TONECALLCONTROLBUTTON- Press to transmit SELCALLcodes, also used
to access TXSELCALLIDprogramming.
6. DUPLEX/ LCDBACKLlGHTControl
a. Duplex Operation
Press this button momentarily to choose semi-duplex operation for Channels 1
through 8.
b. LCDBacklight Control
Press and hold this button to change the LCD backlight level BRIGHT -DIM- OFF.
7. OPENSCAN/GROUPSCAN CONTROL(OS/GS) - Switches operation between
OPENSCANandGROUPSCANMode.
3

8. SCANCONTROL(SCN)-Press to activate Normal OS/GS scanning or press and
hold to enable Seek Mode OS/GS Scanning.
9. MEMORY CONTROL (MEM) - Places channel numbers intothe memory scan list
(OS or GS).
10. AUDIO SCRAMBLER ITONE SQUELCH CONTROL - Controls access to audio
scrambling feature and Tone Squelched operation (Quiet Mode).
Indicators
6mCA:JMEM TS~ '~I'~I
DUP fIGS
SRF...1 SC
11~11~1
Cl Cl Cl Cl Cl Cl PRI
DDD.DDD,MHz I~ ~
11. Channel Indicator -,Indicates the channel number currently selected. On TX
SELCALL usage the Channel Indicator becomes a Memory location indicator.
12. Scan Indicator (SCN) - SCN icon appears when Normal Scan mode is activated.
When Seek Mode Scanning is selected the SCN icon blinks.
13. Priority Indicator (PRI) -Indicates that Priority channel is active when continuously
lit or Flashes when it is regularly being checked for activity while GS scanning.
14. Frequency ISELCALL ID Indicator - Shows the frequency of the current selected
channel. The Frequency Indicator changes to SELCALL ID display when using the
SELCALL feature.
15. RECEIVE SIGNAL IRF LEVEL Indicator (S IRF) - Indicates the relative signal
strength level when receiving (S) or the relative transmit power (RF) when
transmitting.
16. DUPLEX Indicator (DUP) - The DUP icon appears when duplex operation is
selected.
17. TRANSMIT Indicator (TX) - TX appears when the PTT button on the microphone
is pressed and the radio is transmitting. The RF icon also appears at this time.
18. CALL Indicator (CAL) - The CAL icon appears when the UH-100 radio is called
using SELCALL. It also appears when SELCALL codes are being transmitted.
19. SCRAMBLER Indicator (f) -The ficon appears when the Voice scrambler is
activated.
20. MEMORY Indicator (MEM) - MEM appears when the displayed channel is
programmed either in GS or OS Memory.
21. TONE SQUELCH Indicator (TSQ) - The TSQ icon will appear when the selected
channel is set to operate in Quiet Mode, or flashes when the radio is called using
SELCALL.
22. GROUP SCAN Indicator (GS) - The GS icon appears when Group Scan Mode is
activated. Open Scan is indicated by the absence of the GS icon.
4

Connectors
FrontPanel
23. MICROPHONE SOCKET
The microphone plug is inserted into this socket.
Back Panel
0
0
~
6
24. EXTERNAL SPEAKER JACK - Used for remote receiver monitoring. When the
external speaker is connected, the internal speaker is automatically disconnected.
The connecting wire must use a 3.5mm miniature plug only.
25. ANTENNA CONNECTOR - Connect the Antenna here using a PL259 type
connector.
26. DC POWER CORD - DC power is connected to the transceiver through thisjack. A
power cord is supplied with the transceiver.
5

Introduction
The Uniden UH-1 00 UHF two way radio is designed to provide you with years of trouble
free service. Its rugged components and materials are capable of withstanding harsh
environments. The unit may be mounted in several convenient locations using the
universal mounting bracket.
You can be confident in your choice of radio equipment because the UH-100 offers
built-in SELCALL, Wide Liquid Crystal Display, Back-lit Control buttons, complete
coverage of the UHF CB Frequency Band, and much more.
We are certain that you will enjoy your UH-100. Please read this operating guide carefully
to ensure you gain the optimum performance of the unit.
General Features
. Full Coverage of the UHF CB Band
. 5 Watt Max. Transmitter
. Built - In SELCALL Feature
. External Speaker Jack
. Full Frequency Display
. Wide Liquid Crystal Display
. Back-lit Control Buttons
. Multi LCD Backlight Level
. Duplex Capability
. Built-In Voice Scrambler
. Open Scanning
. Group Scanning / Priority Channel Monitoring
. Channel Seek Mode
. Push Button Channel Control
. Front Fire Speaker
SELCALL Features
. 10 TX SELCALL ID Memory Locations
. User Programmable
. Caller Identification
. Full ID Display
. Last ID Re-SEND
. Return Call
. Acknowledge Tone
. Tone Squelch Mode (Receiver Quieting)
. Tone Squelched Scanning
. Compatible with most SELCALL equipped radios in the market.
Specifications, features, and availability of optional Accessories are all subject to change
without prior notice.
6

Included with your UH-100
UH-100 Owner's Manual
@@
@@ ~~ ~
~~
Microphone Hanger, Screws
and Washers
Mounting Bracket, Knobs,
Rubber Washer, Washer Stars
and Screws
=f
DC Power Cord with Fuse
Warranty Registration Sheet
7

Operation
Setting the Squelch
1. To turn the unit ON, rotate VOLUME clockwise.
Adjust volume to a comfortable level.
Note: You must select achannel which is not in use before setting the SQUELCH
control on your radio.
2. 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.
~~i
~IY Strong Signals
~Weak Signals
MediumSignals
Noise
3. If you turn the SQUELCH fully counterclockwise it lowers the "Squelch Gate" so
that everything gets through - noise, weak signals, and strong signals.
Strong Signals
Medium Signals
~Weak Signals
Noise .
..
..
..
..
..
..
..
..
..
8

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.
Strong Signals .
.
.
Medium Signals .
~.
Weak Signals ~I
Noise
Selecting a Channel
1. When you turn on the UH-1 00, the last channel used will appear on the LCD display.
egoCH01 I1I8IkB1~UH"oo
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2a. Press'" to select a higher channel.
- or - I8IkB1 ~ UH-,00
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()~~~,~" 'f75.'fSOIofHzLtL
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()()~""() [-(~ @ W ~
()()()()()() TSO 0MI8
2b. Press T to select a lower channel.
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()~~~,~" 'f71'fOOIofHz
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()() ()()() () TSO
Channel Auto Step
To quicklychange channels, press and hold ~ or ... . This changes channels at 10
channels per second.
Note: A short tone sounds when you press either ~or... and the channel changes.
Another tone sounds when Channel Auto step begins.
9

Transmitting
The UH-100 transmits on 40 UHF CB channels. For your reference, a listing of all the
available channels is printed on the back cover.
1. Select the desired channel.
ego CH01 UEU ,-,
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s
I{ 76.1{t?5MHz
2. To transmit, press the PTT switch to activate the transmitter.
-
.
'116.'1('5.... .. mMEAl
RF 1
I{ 76.1{t?5MHz
,-,
LI ,
I
<e> (!D <aDS
TSQ
Note: 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. Speak at anormal
voice level. Never raise your voice or shout into the microphone.
3. Release the PTT Switch, to end the transmission and listen for the reply.
Mal ,-,
LI ,
I
s
I{ 76.1{t?5MHz
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 (Le. valley) that partially blocks
your transmitted signal, the probability of another radio receiving the signal is very
slim. Valleys, tall buildings, metallic structures, ... etc. tend to act as a screen between
radios. Standard Operation without
the aid of a repeater Station
""""'-..
Normal Simplexoperat~
Transmitting on CH 01 '\
\'No si~nal being
Received
10

Operation with the aid of a repeater
The Signal coming from your radio is received by the Repeater Station and then re-
transmitted at the same time on another channel. This operation is called "Duplexing".
YourUH-100is designed withthe capabilityto access and use repeater stations.
Channels 01 through 08 have the option to operate in Duplex Mode. When any of
these channels are set to operate in duplex mode during transmission, the UH-100
automatically sends the signal at a frequency 30 channels above the original. After
transmitting, the radio reverts back to its originaloperating frequency.
For example,
CH01on DuplexMode willReceive on CH01 but Transmit on CH31
CH02on DuplexModewillReceive on CH 02 but Transmit on CH32etc....
Ifyou transmit on CH01 Duplex mode, you are actually transmitting on CH31, the
repeater station down-converts your signal and retransmits on CH01.
To operate UH-100in Duplex Mode,
ego CH01 is being used in your area for
repeater use. MEM ,-,
LI ,
I~@
eCKF
s
I.{ 70.1.{i'5MHz
.-4 ~
«(-;:'» lelIEU»)«(!2!» [(~) ..
Press DUPLEX momentarily.
The DUP icon appears. AlEAI ,-,
LI ,
I~@
eCKF
DUP
S
'I7Ei'li'5MHz
11

Whenever you press the PTT Switch the UH-100 frequency display changes to CH31
frequency.
iD MEM
ex;.....
'I 77. 17 5 MHz
,-,
LI ,
I~@
@~
~ ~
~([~) ~(@D) .
Press DUPLEX again to deactivate the Duplex Operation. UH-100 will return to Simplex
operation.
ItIEM ,-,
LI ,
I~@
@OfF
s
'I 76.'Ii'5MHz
12

Scanning
The UH-100 has a scanning feature that allows you to search for active channels
automatically.
Furthermore, the UH-100 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.
To initiate scanning.
1. Assuming the unit is on CH 17 when switched on.
MEM ,-,
, , ~@
~OFF
s
l{75.825MHz
~ -- ~
((saIAMBl£»((~EM)) ((~») «0&135») ~
TSQ 'T'"
2. Press SCN and Scanning starts.
MEM ,=g,-,
saN,- """
~ , I,
'""",- §J@
~OFF
~ ~
-~~~
~Q - 'T'"
1. Open Scan (OS) Mode
Allows continuous scanning of channels stored in the
Open Scan memory. If an active channel is found,
scanning will stop on that channel.
Example. CH40 becomes active.
If the received signal ceases, the unit will wait for at
least 3 seconds for the signal to return, otherwise
scanning resumes.
MEM ",-,
S ...11 SCN-",
l{71l{aaM~ -
To skip the active channel, press MEM momentarily.
Scanning resumes.
MEM ",-,
SsaN- "~,
l{71l{aaM~ -
~
MEM '=0,-,
saN0- ,eD
,='-'
To deactivate SCAN, press the SCN switch or the PTT Button.
Note: IfSCAN is deactivated while in an active channel, the UH-100 will stay on
that active channel. If no other channels are active, the UH-100 will reinstate
the starting channel.
13

2. Group Scan (GS) Mode
Allows youto monitor a PriorityChannelwhile scanning.
To use GS Mode Scanning, press the OS IGS 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 present. If
the received signal ceases, Priority scanning continues
after 3 seconds.
If scanning stops on a channel which is not a Priority
Channel, UH-100 will continue monitoring the Priority
Channel for activity while listening to the active one.
egoCH40 becomes active.
MEMGS ,'<E71,-,
SCN0'" ,=
-=,-,
~
MEM GS
SCN
PRI , -,
, ,
MEM
Ias
SSCN
I{ 75.825MHzPRI , -,
, ,
MEM as , ,,-,
S1SCN "'",
1{711{OOMHz -
~MEM as
SSCN
I{ 75.825MHzPRI ,-,
, ,
To deactivate SCAN, press the SCN key or the PTTSwitch.
Note: If SCANis deactivated whileitis tuned at an active channel, the UH-100will
stay on that active channel. If none of the channels are active, the
UH-100willreinstate the Prioritychannel.
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.
14

Choosing a Priority Channel
The starting channel, when Group Scanning is initiated, is always the Priority Channel.
Changing the PRI channel setting while scanning,
ego PRI Channel is CH17 (476.825 MHz)
a. press"", to select a higher channel (scanning pauses)
-or -
GS
SBCN
"I 75.8SGMHzPR, ,,-,
,C,
b. press"', to select a lower channel
GS
SSCN
"I 75.8GGMHzPRI
,,-
,,-
-'
Drop-Out Delay
While scanning, the UH-100 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.
15

Programming Scan Channels
GS ,,-,
,,-,
-~@
re~
1. Selectwhich ScanningModeyou
wish to use on the channel.
OS or GS Mode
Note: OS is indicated by the
absence of the GSicon.
S
&176.85OMHz
.~
'~ ~([§:» ~
2. Select the channel you want to
store.
GS
S
I{ 76.8i'5MHz
~
~(~) ((]ID) l@!D)
TSQ
3. Press and hold MEMfor 1.5sec. to
store. MEM icon appears and a
short tone beep is heard. ME",GS ,-,
, , ~@
reOFF
S
&I 76.8i'5MHz
~ ~
~"'6~.
4. To remove the channel from Memory, press and hold MEM for 1.5 sec. once more.
Two successive beeps are heard and the MEM icon disappears.
16

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 UH-100 will tune to that signal for 4 seconds
only and then resumes Seeking Operation.
Changing from SCAN to SEEK Mode operation.
1. Firstly, activate SCAN mode.
2. Press and hold SCN until a "beep" is heard. The SCN
icon starts to flash.
3. If an active channel is detected the UH-100 will stop on
that channel for 4 seconds. (eg. CH17)
4. After 4 seconds, the UH-100 will start seeking again
for active channels.
5. If you find the channel interesting, simply press either
the PTT switch or the SCN key to stop the operation
before the 4 second timer elapses.
When SCN is pressed again SEEK is still the mode of operation.
To change back to SCAN, while SEEKING. press and hold
SCN until a beep is heard. The SCN icon stops flashing.
MEM -,,-
SCN--
I{71300MHz_, LI
MEM'y £ -r'~I ,-,
Pi\CI Cl
"'EM. ,-,
s ...II)~ I I
I{ 76Bt?5MHz '
MEM'y~ "=1 ,-,
;sr:.CICl
mMEM
RF...11
I{ 76.850MHz ,,-,
II-'
-
MEM ,-, ,-,
SCNCl Cl
Note: SEEK checks the same channel stored in SCAN memory. Thus, you can Seek
either in OS or GS Mode.
17

Voice Scrambler
UH-100 has a built-in scrambler / de-scrambler circuit.
The Voice Scrambler feature prevents users, without the necessary descrambler
equipment, "understanding" your conversation. This feature is NOT operable on CH01
through CH08, CH31 through CH38, and CH11, and will only work between units
with the voice scrambler feature compatible with the Uniden UH-100.
To activate the audio scrambler, select an available channel for audio scrambling.
egoCH10
Press SCRAMBLE, the' icon appears.
s
1.{76.6SGUHz
MEN
,,,-,
ILl
Transmit in a normal fashion.
fEI MEN
RF!..II
I.{76.6SGUHz ,,-,
ILl
To deactivate press SCRAMBLE again. The Lightning icon disappears.
MEN , ,-,
ILl
s
I.{76.6SGUHz
Be "Polite" when using this feature. Use this feature when the communication
link is already established and only when needed.
Note: The Audio scrambler and the SELCALL functions cannot be operated
simultaneously.
18

LCD Backlight Level Control
The LCD backlight level can be changed to BRIGHT, DIM, or OFF.
To change the level simply press and hold the DUPLEX key for more than 1.5 seconds.
IIEII ,,-,
ILl ~@
re OFF
5
I..f 75.5SGMHz
To change further, press and hold DUPLEX again.
f'MEM
I~75.5SGIIHz
,,-, ,
ILII
.18.
19