Uniden Receiver Bearcat BC235XLT Operating Instructions

							SVC Scanning
The ServiceCScan feature allows you to toggle through
five bands preprogrammed for police, fire/emergency,
aircraft, marine, and weather. The frequencies selected for
these bands are the most commonly used around the U.S.
1. Press
C.
POLICEappears
beneath the blinking
channel number, and
a frequency displays.
2. After a two second
delay, scanning
begins.
PressSto start
scanning immediately
or to continue
scanning if you want
to skip a frequency.
3. PressCto scan the
FIRE/EMGbank.
4. Press
Cto scan the
AIRbank.
5. Press
Cto scan the
MRNbank.
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							When an active
channel is displayed,
the scanner will
alternate between the
frequency and the
Marine channel
number. For example,
156.800 alternates
with CH 16.
6. PressCto scan the
WXband.
Note:It’s possible to
receive more than
one weather
broadcast in your
area. If the broadcast
sounds weak or
distant, press
Sagain to look for a
closer station.
7. To exit SVC Scan
mode, press
M.
During search of one of the preprogrammed service bands,
press
Hto stop the scan on a frequency.HOLDappears
in the display. Press
(or)to move up or down one
programmed frequency, or press
Sto resume scanning.
Note:If you want to remain on a channel until a
responding transmission is received, press
Yto
activate the two second delay feature.
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AND
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							SVC Scan Lockout
Follow these steps to lockout frequencies during Service
scanning:
Note:
You cannot lockout weather frequencies.
1. PressHto stop the
Service Scan.
2. Press
O.
3. Press
Sto resume
scanning.
Note:You can lockout up to 20 frequencies in SVC Scan
mode. The 21st locked out frequency entered
causes the first locked out frequency to unlock.
Programming with SVC Scan
Follow these steps to program frequencies into a channel
during Service scanning:
1. Select a channel you
want to program.
Note:If a frequency
is already stored in
the channel you
select it will be erased
when you save the
new frequency.
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							2. PressCto select
Service Scan mode.
Repeat until you
select the service
mode you want.
3. Press
Sto begin
scanning.
4. When SVC Scan
stops on a frequency
you want, press
H.
5. Press
Eto store the
frequency in the
channel you selected.
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							Trunk Tracking
YourBC 235XLTis designed to track Motorola Type I,
Type II, Type IIi, Hybrid,
SMARTNET™, andPRIVACY PLUS™
analog trunking systems
*, which are extensively used in
800 MHz communication systems. When tracking these
types of systems, you may want to remember these
important points:
Your scanner defaults to monitor Type II systems;
however, you can change this if the system in your
area is different. (The types of systems are
discussed below.)
Your scanner cannot track an 800 MHz trunked
system and scan frequencies in conventional
mode at the same time.
The frequencies for many of the 800 MHz public
safety systems are listed in the
TrunkTracker™:
National Public Safety Trunked System Frequency
Guide
included with yourBC 235XLTscanner.
If you have internet access, you can visit
www.trunktracker.comfor current news and
information about Trunk Tracking Scanning.
*Motorola,SMARTNET, andPRIVACY PLUSare
trademarks of Motorola Inc.
Types of Trunking Systems
Trunking systems divide a few frequencies among many
different users, but the way that each system does this is
slightly different. There are really two basic types which are
important when using your TrunkTracker™ scanner. These
are usually referred to as Type I and Type II systems.
One important distinction between these two systems is
the amount of data transmitted by each radio when its
push-to-talk button (PTT) is pressed. Every radio in a
trunked system is assigned a unique ID so the central site
computer can identify it when it’s used. Both Type I and
Type II systems place radios (or radio users) into groups,
called talk groups, and these talk groups are also assigned
unique IDs. Some radios have access to only one talk
group, while others have access to many talk groups.
Which talk group(s) each radio can access is called the
radio’s affiliation(s).
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							In a Type II system, when someone uses their radio, only
the radio ID is transmitted when PTT is pressed, whereas
in a Type I system the radio ID and its current affiliation are
both transmitted when PTT is pressed.
Why the difference? Type II systems are slightly more
advanced because the central computer maintains a
database which is used to determine each radio’s
affiliation(s). Changes to a Type II system are easier than
Type I because the system manager only need update the
database instead of reprogramming individual radios.
Another difference between the systems is that Type I
systems are arranged in a Fleet-Subfleet hierarchy. For
example, it’s possible for a city using a Type I system to
designate 4 Fleets, each with 8 Subfleets. Their fleets
might be the Police Department, the Fire Department,
Utilities, and Administration. The Police may decide to
further divide their fleet into subfleets such as Dispatch,
Tactical Operations, Detectives, North, South, East and
West Side Patrols, and Supervisors. All the available police
radios would then be assigned to one of the police
subfleets. Determining the exact Fleet-Subfleet hierarchy
for a particular area is referred to as Fleet Map
Programming.
The disadvantage of a Type I system is that when PTT is
pressed, the brief bust of data must contain the radio’s ID
and its Fleet and Subfleet. This is three times the amount
of data a Type II system radio sends, and as a result
Type I systems usually accommodate fewer users than
Type II systems.
Even though there are many Type II systems, Type I
systems are still in use. There are also Hybrid systems
which are a combination of both Type I and Type II. Your
scanner defaults to monitor Type II systems, but it’s
possible to select a Preprogrammed Fleet Map or create a
Custom Fleet Map for your area.
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							Setting the Squelch
Since Squelch is automatically adjusted in trunking mode,
it isn’t necessary to manually adjust the squelch control
while trunk tracking. However, the squelch setting you
select before you begin trunk tracking can affect how fast
your scanner acquires the data channel, and, in some
instances, the squelch setting can prevent your scanner
from acquiring the data channel at all.
Set
SQUELCHin this
position before
selecting a trunking
bank.
Note:You can
change this
recommended
setting, if necessary,
to provide better
performance in your
area.
Programming Trunking Frequencies
Before you start programming your scanner to track a
trunked system, consider the following:
You can only program one trunking system in each
bank of your scanner.
Trunking frequencies must be entered while in the
Trunking Programming mode.
If you’re in the Trunking Programming mode, you
cannot select channels in other banks.
For example, if you are programming Bank 4, you
can only select channels 91-120 with the
(or)keys.
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							The first step in tracking a trunked system is storing the
frequencies in one of the 10 available banks in your
scanner.
1. Press and hold
T.
You will hear two
beeps, and
BANKand
TRUNKwill begin to
flash in the display.
2. Choose the bank you
want to trunk track.
For example, press
2.
3. Use the keypad to
enter a frequency for
the trunked system.
For example, enter
856.2625, or enter a
frequency of the
system you’re going
to track.
Then press
E.
Note:To clear a mistake while entering a
frequency, press
.twice, and start over.
If you enter a non-800
MHz trunked repeater
output frequency, an
error message
displays.
Press
.and go
back to Step 3.
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TRUNK
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							4. Press eitherMor)
to select the next
channel in the bank.
5. Repeat steps 3 and 4
until all frequencies
have been entered.
6. Press
Rto begin
searching the bank
you’ve programmed.
Note:You will see
the frequencies
quickly displaying as
your scanner looks
for the data channel
which controls the
system.
Searching a Trunked Bank
Before you Search a Trunked Bank with your scanner,
consider the following:
You can only trunk track one bank at a time.
UseTto toggle between the conventional and
the trunk tracking modes.
PressDwhile in the Trunk Tracking mode to
review which bank is currently in use. The
appropriate bank icon will flash at the top of the
display for 5 seconds.
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TRUNK
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							If you have programmed frequencies for a trunked system
in one or more of the 10 available banks and you are in
conventional mode, follow these steps to begin trunk
searching:
1. Press
T.
The bank indicators
begin to flash.
2. Use the keypad to
select the trunked
bank you want. For
example press
2.
Note:You will see
the frequencies
quickly displaying as
your scanner looks
for the data channel
which controls the
system.
Once the data
channel is acquired,
the scanner begins
trunk tracking. Talk
group ID’s, which
represent different
service groups, begin
to display.
3. PressTagain to
return to conventional
scanning mode.
While searching, you won’t know exactly who the ID’s are
assigned to until you listen awhile or until ID lists are
available in frequency guides or on internet sites. However,
it usually only takes a few minutes to figure out police, fire,
and emergency medical personnel. Other IDs may take
some time, but determining who each ID represents is half
the fun of
TrunkTracker™.
12345678 910BANK
TRUNK
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