uniden
Ronhrnf-
UBC 175
16 CHANNEL
SCANNING RADIO
9 BAND COVERAGE
CRYSTAL FREE
AUTOMATIC SEARCH
DIRECT CHANNEL
ACCESS
AUTOMATIC SQUELCH
CHANNEL LOCKOUT
TRACK TUNING
SELECTIVE SCAN DELAY
SPEED CONTROL
AIR CRAFT BAND
PRIORITY CHANNEL
WEATHER SEARCH
MANUAL UP/DOWN
SEARCH
XL
»anlromc i
AGENCIES PTY. LTD.
TABLE OF CONTENTS
Technical Specifications.......................3
Unpacking
General Description
Memory Back-up..................................4
Optional Antenna
Antenna................................................5
Controls................................................5
Display
Program Keys
Operation Keys.................................6, 7
Operating the Scanner
Programming
Search..................................................8
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UNIDEN DOES NOT REPRESENT THE UNIT TO HAVE BEEN WEATHERPROOFED. TO
REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK. DO NOT EXPOSE THIS APPLIANCE
TO RAIN OR MOISTURE.
Manual Step-Search
Manual Channel Selection
4
Lockout
4
Delay
Priority
4
Weather
Speed ................................................12
Error Message
6
6
External Speaker
User Hints
7
Birdies................................................12
8
Trouble Checks
WARNING
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CAUTION
RISK OF ELECTRIC SHOCK
DO №0T OPEN
CAUTION: TO REDUCE THE
RISK OF ELECTRIC SHOCK,
DO NOT REMOVE COVER PR
BACK) NO USER-SERVICE
ABLE PARTS INSIDE. REFER
SERVICING TO QUALIFIED
SERVICE PERSONNEL.
A
The lightning flash with arrow
head symbol, within an equi
lateral triangle, is intended to
alert the user to the presence ef
uninsulated "dangerous voltage"
within the product's enclosure
that may be ot sufficient magni
tude to constitute a risk of elec
tric shock to persons.
A
The exclamation point within an
equilateral triangle Is intended
to alert the user to the presence
of important operating and main
tenance (servicing) instructions
in the literature accompanying
the appliance
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10
10
11
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12
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For future reference, write in the model number and serial number below. You
will find them on the bottom of the unit.
Model No.. Serial No..
Purchased from:
Date
TECHNICAL SPECIFICATIONS
Size:
Weight:
Power:
Antenna:
RF Sensitivity:
IF Selectivity:
Frequency Coverage:
Channel Capacity:
Audio Output:
Rear Apron Connections:
240W X 62H X ISODmm
740g
AC Adaptor
Telescoping antenna (supplied)
Connection provided for external
antenna (50-70 ohms)
0.3 microvolts 66-88 & 136-174 MHz
0.5 microvolts 406-512 MHz,
(±3 KHz deviation 12 dB SINAD)
0.8 microvolts 118-136 MHz,
(60% MOD 12 dB SINAD)
-55 dB @ ±25 KHz
66-88 MHz
118-136 MHz
136-144 MHz
144-148 MHz
148-174 MHz
406-420 MHz
420-450 MHz
450-470 MHz
470-512 MHz
16
1 W, 8 ohms, 10% THD
AC Adaptor Connector
External Antenna Jack
External Speaker Jack
Front Panel Controls: Volume (on/off). Squelch (Auto Squelch)
SPECIFICATIONS ARE TYPICAL AND SUBJECT TO
CHANGE WITHOUT NOTICE,
UNPACKING
Carefully remove all units from the shipping carton. If there is any visible
damage, DO NOT attempt to operate the equipment. Notify your dealer or ship
ping carrier immediately.
Keep the shipping cation and packing materials, as well as all printed material.
The carton serves as an excellent method to transport the Uniden® Bearcat®
175XL to other locations.
The following parts are included in this carton:
Uniden® Bearcat® 175XL
AC Adaptor
Operating Instructions
Telescoping Antenna
GENERAL DESCRIPTION
Scanning is easy and fun with the Uniden® Bearcat® 175XL. Advanced elec
tronics provide programmable operation and dependability. The rubber keytop
keyboard has been designed for comfort and operating efficiency. It is divided
into two sections: PROGRAM, which allows you to command any frequencies
(VHF/UHF) on its 16 channels; and OPERATION. Volume and squelch levels
are controlled by smooth acting knob adjustments. An 8-digit, back-lighted LCD
display provides frequency, channel, lockout, delay, priority, weather search
and memory loss information, A unique capacitor type memory back-up
eliminates the need for batteries. The case is constructed of high impact plastic.
MEMORY BACK-UP
The Uniden® Bearcat® 175XL is equipped with a unique capacitor type memory
back-up. The capacitor back-up will provide approximately four hours of memory
retention in the event of a power interruption. When memory loss has occurred,
the memory loss message will be displayed. It wilt remain on the display until
any operating key is pressed. The system is completely automatic and requires
no maintenance.
INSTRUCTIONS OPTIONAL ANTENNA
An external antenna may be helpful in fringe areas. Always use 50-70 ohm coax
ial cable for lead-in. For lengths in excess of 50 feet, RG8AU low-loss foam
dielectric coax is recommended. Your scanner is equipped with a standard
automotive type antenna connector. A mating plug (optional) must be used.
ANTENNA
The telescopic antenna provided with the Uniden® Bearcat® 175XL is recom
mended for most monitoring. Insert the antenna swivel connector into the anten
na jack located on the back panel (fig. 1). Extend the antenna. The swivel con
nector allows the antenna to be angled if desired. For weak signal reception
or electrically noisy locations, an external antenna may be helpful.
You can also store your antenna in the handy compartment located under the
unit. Simply remove the antenna from the connector and snap it in place. When
you are ready to set it up again unsnap the antenna and plug it in.
CONTROLS
1 On-Off/Volume: Turns the receiver power on or off, and also varies the
audio output level (fig, 2).
2. Squelch; Eliminates the annoying “rushing" sound that is present between
transmissions when no signal is being sent. Proper setting of this control
keeps the receiver'‘quiet” and allows scanning until a signal is received
(fig. 2). The 175XL also has an automatic squelch setting marked "AUTO”.
Turn the squelch control to “AUTO” for a preset level that allows all clear
signals to be received.
Squelch Control
ON/OFF
Volume Control
DISPLAY
Your Uniden® Bearcat® 175XL has an 8-digit backlighted display which indi
cates the channel and frequency being monitored as well as lockout, delay,
priority, weather (WX) search and memory loss (fig, 3). All of the functions of
the display will be discussed in detail later in the programming section.
Memory Channel
Number
Frequency
ir> MH7
PROGRAM KEYS
Numeric keys 0 through 9 and □ are used to program the frequencies into
your scanner. allows frequencies to be entered into the 16 memory chan
nels for scanning.
OPERATION KEYS
Provides a 3 second delay on any channel to receive a reply
transmission before resuming search or scan. Delay is retained
in memory,
LIMIT I Enters two selected frequencies as upper and lower search limits.
Also when receiver is stopped on a signal in the search mode,
LIMIT permits manual searching lower in frequency, one frequen
cy at a time. Search limits will be retained in memory.
SHCH I Starts search operation.
HOLD
Stops search. Also when receiver is stopped on a signal in the
search mode, HOLD permits manual searching higher in frequen
I
cy, one frequency at a time.
PRI I Samples channel 1 every three seconds regardless of other opera
tional settings. Priority function will be retained in memory.
WX
SPEED I Select high (15 channels per second) or low (5 channels per
L0CK0UT| Locks out reception of signals on any selected channels during
SCAN j Starts scan of all memory channels that are not locked out.
MANUAL I Stops scan or search. Steps scanner individually through all chan
Searches all seven NOAA weather frequencies until locking on
the one actively broadcasting in your area.
second) scan speed.
scanning. Lockout is retained in memory.
nels in the selected bank(s). Also permits Direct Channel Access,
OPERATING THE SCANNER
The Uniden® Bearcat® 175XL has 16 memory channels each of which can be
programmed to store one frequency. When [SCAN | is pressed, each of the
programmed frequencies will be sampled in sequence, but locked out chan
nels wili be skipped.
In each programming example, the keys to be pressed are listed in sequence
after the word PRESS. After the word “Display” will be an illustration of the
actual displayed data. Follow the examples carefully, and programming will
be easy.
Plug the AC power cord into a standard 220 Vac wall outlet and into the AC
Power receptacle (fig.t) on the radio. Slip the cord into the retaining channel on
the bottom of the unit to avoid accidental disconnection. Turn the unit ON by
rotating the ON-OFF volume switch clockwise. Press MANUAL key and adjust
the "SQUELCH" CONTROL (fig. 2) clockwise until you hear background noise;
then turn it back counterclockwise until the noise disappears.
If you know the exact frequencies you wish to Scan, proceed with “Program
ming”. If you do not know the frequencies of the agencies (i.e., police, fire,
weather, etc.) you wish to scan, check with your dealer. Active frequencies
can also be found through “Search”.
PROGRAMMING
Example: To program 162.550 MHz into channel 2:
PRESS
Display: X X X . X X X
PRESS: Q[1J[^Q|T][^[T]
Display; ^ 1вг . ssD (Final zero to the right of the
NOTE; X denotes the digits of the previously programmed frequency.
To program 471.2375 into next channel (3).
PRESS; MANUAL Each time MANUAL is pressed, the channel will
Display: ^ X X X . X X X
PRESS: □□□□[□□□[[]
Display: ^ H 1 1 . ^ 3 1
NOTE: X denotes the digits of the previously programmed frequency.
: Q
decimal will enter automaticalty.)
advance. In this case it advances from 2 to 3.
MANUAL
]
Repeat this step until all desired channels have been programmed. If you make
an error while entering a frequency, begin again. You may omit the decimal
point on frequencies except those between 66 MHz and 88 MHz. Your
Uniden® Bearcat® 175XL has been designed to enter this automatically. On
low band (66-88 MHz) you must press the decimal point key.
SEARCH
Your Uniden® Bearcat® 175XL will search for unknown signals between two
frequency limits in the same band (66-88 MHz, 118-136 MHz, 136-174 MHz,
or 406-512 MHz). The Frequency Allocation listing in the back of the manual
will give you an indication of what you might expect to find in the various
bands and frequency ranges. To SEARCH, enter the search limits in any
sequence, making sure they are in the same band as shown above.
Example: To search between 152.150 МНг and 155.575 MHz on channel 2:
PRESS
Display: jP X X X . X X X
PRESS; QQQQQQLIi^
Display: ^ ? S /50
PRESS: QQQQQQQL™
Display; ¿> ? S 5 , 5 7 5
PRESS: SRCH
NOTE: X denotes the digits of the previously programmed frequency.
When an active frequency is found, the SEARCH stops and the frequency is
displayed.
During your search, record (on paper) the frequency numbers you wish to re
tain as you identify them. Later you can program these individual frequencies
into memory channels or press and the frequency displayed wilt im
mediately be programmed into the indicated channel. Search is not affected
and may be continued.
И
decimal will enter automatically.)
MANUAL
]
To remain on a frequency after the signal goes off the air:
PRESS: ^HOLdJ You may now press HOLD ^ to step higher in
frequency which will sometimes produce clearer reception. You
may also press
to improve reception or just to select a new frequency. If
LIMIT
to step lower in frequency again,
[I] is pressed, the frequency in the display will be
entered into the memory channel being displayed.
To resume searching within the same limits:
PRESS:
To remove search:
PRESS: MANUAL or SCAN , search will turn off.
SRCH
MANUAL STEP-SEARCH
Your Uniden® Bearcat® 175XL has the ability to be stepped, one frequency
at a time, either up or down throughout its search range. This feature is helpful
in tuning in a frequency or for stepping to any new frequency within search limits.
To Step-Search while in search mode:
PRESS:
PRESS:
OB:
PRESS:
PRESS:
HOLD n
HOLD
frequency.
HOLD
LIMIT
frequency.
J repeatedly to step upward to the desired higher
repeatedly to step downward to the desired lower
MANUAL CHANNEL SELECTION
If you wish to select a specific channel to monitor, two methods are provided:
PRESS:
OR, Direct Channel Access:
PRESS:
^ANUA^ repeatedly until the desired channel number
appears.
CHANNEL NUMBER | MANUAL I
LOCKOUT
You may wish to lock out certain frequencies and skip over them when scan
ning. To program Lockout on a channel (example 5), first select that channel
manually.
PRESS: □
PRESS;
Display:
To remove Lockout:
PRESS:
NOTE: If all channels are locked out, the scanner will go into manual mode.
This may be eliminated by removing lockout from one channel.
MANUAL
LOCKOUT
LOCKOUT The lockout message will be displayed.
lockout"! 3gain and the message will disappear.
10
DELAY
Your scanner can be programmed to pause for about three seconds after a
transmission ends on any selected channel. This is useful when both sides
of a conversation are transmitted on the same frequency.
To program Delay on a selected channel:
PRESS:
PRESS:
Display: DELAY The delay message will be displayed
To remove Delay:
PRESS;
MANUAL I step to that channel.
DELAY
^DELAlJ The message will disappear.
]
PRIORITY
It is often desirable to be alerted to a transmission occurring on a channel other
than that to which you are listening. The priority feature samples any frequen
cy which has been entered into channel 1, every 3 seconds.
If a signal is detected on the priority frequency, (channel 1) when sampled,
the receiver will remain tuned in to it until the transmission ceases, at which
time the scanner will revert to the last mode of operation.
To activate the priority function:
PRESS:
To remove priority:
The priority message will be displayed.
PRESS:
PRI 1 again and the priority message will disappear.
WEATHER
Searches all seven NOAA weather frequencies until locking on the one active
ly broadcasting in your area.
To search for local weather:
PRESS:
PRESS:
MANUAL
WX I Display will indicate the weather frequency
being received.
11
To remove weather:
PRESS:
MANUAL
or
^CAN^ , weather will turn off.
SPEED
The Uniden® BearcaF" 175XL has a high/low scan speed adjustment.
Whenever the unit is turned on, the scan speed will automatically be high. Press
the speed! key to select the slow scan speed. Press the SPEED | key again
to switch back to high.
ERROR MESSAGE
To inform the user anytime an out-of-band frequency is stored in memory,
the UBC 175XL autornatically displays “ERROR" in this event. The condition
may arise when the user presses ENTER with an invalid number in the
display. The user should simply enter an in-band frequency (see programming
section) to clear the ERROR indication.
EXTERNAL SPEAKER
Although the internal speaker of the scanner will provide ample room volume,
in some applications an external speaker may be desired. The externa) speaker
should be plugged into the rear-apron jack (fig. 1) which wiil cut off the internal
scanner speaker. The external speaker impedance should be 8 ohms.
USER HINTS
Your scanner is a versatile instrument. The following operating hints will help
you use all of its features,
1. Always remember to press the | E | key when programming a desired
frequency.
2. When disconnecting the AC adapter from the outlet, make sure the radio
is turned off. You may wish to record your programmed frequencies (on
paper) before disconnecting the AC adapter since memory will be lost in
approximately 4 hours.
3. When memory is lost, simply reprogram the proper frequencies. Memory
loss will be indicated by the appearance of non-user programmed frequen
cies in the display,
4. In case of strong interferring noise or signals, it may be desirable to move
the unit to a different location, and under extreme conditions, reduce the
length or change the angle of the antenna,
5. When operating the keyboard, it is important to press firmly in the center
of the key with the tip of your finger,
BIRDIES
All radios are subject to receiving undesired signals. If the Uniden® Bearcat®
175XL stops during search mode and no sound is heard, simply press the
' SRChJ key one or more times to resume.
12
NOTE: Environmental sources of interference such as power line noise, a televi
sion set or other electrical appliances may generate signals that create the same
effect. Moving the scanner may eliminate such interference.
TROUBLE CHECKS
1. Scanner is not working
properly.
2, Signal is weak or
distorted.
A. Is radio plugged in and receiving power?
B. Is OFF-ON-VOLUME switch on?
C. Go through the complete section on pro
gramming all functions,
A, Check antenna—adjust height,
B. Go through all the checks in number 1,
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banlromc i
AGENCIES PTY. LTD.
13 GABEMA CIRCUIT, KINGSGROVE
PHOME 758 1522, TELEX AA73170
FAX 7502722
P.O. BOK 12, Kingsgrove, NSW 2208
MELBOURNE: 446-448 BELL STREET
EAST PRESTON VIC 3072
PHONE; (03) 484 0373
BRISBANE; 3M2 BANDALL ST
SLACKS CREEK, OLD 4127
PHONE 07 290 1188
PERTH: 23GEDDESST.,
BALACATTA W.A. 6021
PHONE: (09) 344 3937
UBSN01105GZ (GRN)
Printed in Taiwan
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