Uniden America UB299 User Manual Draft Owners Manual

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Document ID	24045
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Document Description	Draft Owners Manual
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Date Submitted	1999-02-19 00:00:00
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Creation Date	1999-02-19 09:43:44
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USER MANAUL (DRAFT) BC248CLT
Introduction
Scanning is easy and fun with the BCZ4BCLT 50-Channel Base Scanner. You can
scan in 2 ways:
Scan channels you have programmed
Scan ore-programmed weather channels.
Unlike standard AM or FM radio stations, most Z—way communications (see Types
of Communication below) do not transmit continuously, The BC24BCLT scans
programmed channels at the rate of about 15 channels per second until it
locates an active frequency. When the scanning stops on an active frequency,
it remains on that channel as long as the transmission continues. When the
transmission ends, the scanning cycle resumes until another transmission is
received. You can set a 2 second delay (refer to 2 Second Delay. page XX.)
Types of Communication
You can monitor communications such as:
Police and fire department (including rescue and paramedics)
NOAA weather broadcasts (Tore—programmed channels)
Business/industrial radio
Motion picture and press relay
Utility
Land transportation frequencies such as trucking firms, buses, taxis, tow
trucks, and railroads Marine and amateur (ham radio) bands And many more in
the 29—54MH1, 137—174MHz, and 406-512MHz ranges You must program a frequency
into each channel you want to use. If you do not have any known local
frequencies to program, call the 800number on the yellow sheet enclosed in
this package. A Uniden representative should be able to provide you with a
few sample frequencies. Or, use the enclosed order form to purchase a local
frequency list.
Where to Obtain More Information
The Bearcat Radio Club and other similar hobby clubs have publications,
information on computer bulletin boards, and contests for the radio
enthusiast. See the enclosed printed material for more information.
Additional information is also available through your local library.
Taking Proper Care of Your Scanner
Do not use the scanner in high-moisture environments such as the kitchen or
bathroom. Avoid placing the unit in direct sunlight or near heating elements
or vents. Do not plug the scanner into an outlet controlled by a wall switch
as prolonged periods without power causes scanner memory loss.
Unpacking
Carefully check the contents against this list:
BG248CLT Base Scanner
Telescoping Antenna
AM Radio Loop ANT
AC Adapter (Model AC—IAAU)
This Operating Guide
Registration Form (in this Operating Guide)
Frequency Directories Order Form and other printed information if any items
are missing or damaged, contact your place of purchase immediately. Complete
and mail your Registration Form immediately. Read this Operating Guide
thoroughly before operating the scanner.
NOTES:
The Possession, or use of this scanning radio in a motor vehicle my be
prohibited, regulation, or require a permit in certain states, cities, and/or
local jurisdiction. Your local law enforcement officials should be able to
provide you with information regarding the laws in your community.
Changes or modifications to this product not expressly approved by Uniden,
or operation of this product in any way other than as detailed by this
Operating Guide, could void your authority to operate this product.
installation
Installing the BC248CLT
l.lnsert small plug at the end of the AC Adapter cord into the ACIOV jack
on the scanner.
2.Plug the AC Adapter into any standard lZOVAC wall outlet. Do not plug into
an outlet controlled by a wall switch; it could cause scanner memory loss.
3.Plug the Telescoping Antenna into the AMT. jack. Extend the antenna to its
full height. For UHF frequencies, shortening the antenna may improve the
reception.
4.Plug the AM Radio Loop ANT into AM ANT Jack
5.Plug an optional external speaker (B—ohm) into the EXT.SP. jack.
Note
If your scanner receives strong interference or electrical noise, relocate
the scanner or its antenna away from the source. If you are operating the
scanner in the fringe area or need to improve reception, use an optional
antenna designed for multi—band coverage. (You can purchase this type of
antenna at a local electronics store.) If the optional antenna has no cable,
use 50—70 ohm coaxial cable for lead—in. A mating plug may be necessary for
the optional antennas.
Operation
Controls and Functions
l.LCD Display
Displays channel frequency and functions.
2.Numeric Keys
Use to program a frequency into each channel for scanning. Also, use for direct
channel access with M.
3.Enter Key E
Press E to complete the programming of a frequency to the selected channel.
4.PRIORITY Key P
Press P to turn Priority mode on or off. In Priority mode, the scanner samples
Channell every 2seconds, regardless of any other mode the scanner is in,
except Weather Alert. If a transmission on Channell is detected. the scanner
monitors Channell until no signal is present. Priority mode cancel when you
turn off your scanner.
5.LOCKOUT Key L
Use the LOCKOUT mode to prevent scanning of a selected channel. The L/O
indicator appears when the current channel is locked out. Lockout is retained
in memory. Press L again to unlock the channel. The LOCKOUT indicator
disappears.
6.8CAN Key 8
Press 3 to start scanning.
7.Weather Key W
Press W to find the local weather channel.
B.ALERT Key A
You can activate the Weather Alert only while you are listening to a local
weather channel in the Weather mode. Weather Alert mutes the normal weather
broadcast audio. A siren sounds when a severe weather emergency tone signal
is received.
9.SQUELCH Control
Adjust SQUELCH to set the scan threshold or use AUTO for the factory setting.
10.Volume Control / Power Switch
Turn VOLUME clockwise to turn the scanner on and increase the volume. Turn
counterclockwise to decrease the volume or turn the scanner off.
ll.DELAY Key D
Press D for a switchable Zsecond delay at the end of transmissions.
12.MANUAL Key M
Press M to stop scanning. Press M again to step to the next channel. Also,
use for direct channel access by first entering the channel number and then
pressing M to go directly to that channel.
13.Channel Display
2—digit display that shows I through 50.
I4.Freouency Display
Six—digit display that shows the current frequency.
15.Memory Loss Indicator
MEMORY LOSS shows on the LCD display when a power failure causes a loss in
memory.
lS.AIert Indicator
ALERT appears on the LCD display when the scanner is in the Weather Alert
mode. The broadcast audio is mute.
17.Weather Indicator
WX shows when in Weather Search mode.
18.Delay Indicator
DLY appears when Delay function is active
19.Priority Indicator
PRI displays when Priority function is active
20.Lockout Indicator
L/O shows when the current channel is locked out.
Scanning Overview
The BCZABCLT has 50 memory channels; each can be programmed to store
Ifreouency within the band of frequency coverage. (For a listing of frequency
ranges and bands, see Technical Specifications on page.)
When you press 8, the BCZdSCLT scans each programmed frequency for activity
(skipping channels that are locked out) at the rate of about 12 channels per
second. As the unit scans, the word SCAN moves across the LCD display.
When the scanning stops on an active frequency. it remains on that channel
as long as the transmission continues. What happens at the end of the
transmission depends on whether or not the Delay function is active. If the
Delay function is active. the scanner pauses on the same channel for Zseconds,
waiting for a responding transmissions If there is no responding transmission
within 2 seconds, the scanning cycle resumes. If the Delay function is
inactive. the scanner immediately resumes scanning.
Getting Started
Turn SQUELCH fully clockwise to the highest number setting (9) .
Turn on the power by pressing SCAN KEY. Adjust the volume to where you can
hear a steady noise.
Set the squelch at the scanning threshold by turning SQUELCH counterclockwise
just until the noise disappears or set on AUTO for the factory setting. The
scanner automatically starts scanning. If you have not programmed any
channels yet, press W to hear your local weather broadcast. Adjust VOLUME
to a comfortable listening level. Adjusting the Squelch Set the SQUELCH
control to AUTO for the factory setting or manually set squelch.
To manually set squelch, open the squelch by turning SQUELCH control clockwise
to position 8 or 9. You should hear a steady sound (scanning stops).Now turn
SQUELCH control counterclockwise slowly until the sound disappears. This is
the threshold point at which scanning starts. At the squelch threshold, an
incomingsignal just slightly stronger than the noise will open the squelch.
When squelch is open, you can hear the broadcast (scanning is stopped). If
squelch is set too tight (that is, too far counterclockwise from the threshold
point), a stronger signal is required to open the squelch.
lf squelch is set on a point clockwise from the threshold, you hear a constant
sound (noise, if no signal is present); the scanner does not scan.
Programming Tips
Program lfrequency per channel.
The fixed priority channel is Channell. Program the most important frequency,
or the one of major interest. into Channell. To quickly program a series of
channels, start with the lowest number channel. For example, when you are
programming five new frequencies into Channels4 through8, start wi th Channel4.
After you complete the programming in lchannel (by pressing E), press M to
step up to the next channel.
If you make an error during programming, or the frequency is out of range,
Error appears on the channel display. During numeric entry, if you know that
you pressed the wrong number, press. twice. This cancels the entire numeric
entry, and displays the current channel number.
Above 406MHz, the frequency steps are in lZ.5kHz increments. To enter a
frequency such as 450.4875, press each of the seven digits in sequence.
Once you have programmed a channel, you cannot erase the frequency in that
channel. However, you can change the frequency in a specific channel by
programming a new frequency over the existing one. If you want to manually
erase all the memory, first turn off the scanner. Then, press and hold M,
Z, and 9 simul taneouslywhi Ie you turn the scanner back on. MEMORY LOSS appears
in the LCD Display, indicating that all memory is erased.
Programming Frequencies
Before you can use your BCZABCLT, you must program the channels except
weather frequencies. Follow these steps:
Example: Program 420.|50 MHz into ChanneliZ.Press M to stop scanning.
To select the channel (12). press 1, then 2 on the numeric keypad. Then press
M again.
Type in the frequency numbers, including the decimal point. using the numeric
keypadzdzl]. 150
Press E to complete the entry.
About Memory Back—up
Your BC2480LT has a convenient type of memory back—up system. In the event
of a power failure, the scanner provides approximately 3days of memory
retention so you don’t immediately lose the frequencies stored in any of the
channels. If the memory is lost, MEMORY LOSS shows in the LCD Display.
Scanning
Turn on the power, or press 8 to start scanning. (When the scanner is turned
on, it is automatically in Scan mode.)Scanning automatically stops on any
active channel, except those channels programmed with L. If the Delay function
is active, scanning automatically resumes Qseconds after the channel becomes
inactive. If the Delay function is inactive, scanning resumes immediately
at the end of a transmission.
Press M anytime to stop scanning. When you press M, you are out of Scan mode,
and the scanner remains on the displayed channel. Press 5 to start scanning
again, or press M to step up to the next channel. If desired, you can press
M repeatedly to manually scan all 20channels, lpress per channel, including
the channels that are locked out.
Z-Second Delay
You can program your BCZABCLT to pause for 2 seconds after a transmission
ends. This allows time for a slight pause between transmissions. Without the
Zsecond delay, the scanner immediately resumes scanning, missing the rest
of the transmission.
To activate the Delay function, press M. You cannot enable the Delay function
while scanning.
Press D. DLY appears in the LCD Display. To disable, press the DELAY key again.
Direct Channel Access
This feature allows you to instantly access a specific channel you want to
monitor.
Example: Select Channel 4.Press 4.
Press M. When you press 4, the display changes to 4, but the scanner still
monitors the previous channel displayed. You must press M to successfully
complete the direct access to Channeld.
Weather Channel Scan
The BCZ48CLT allows you to search for your local NOAA weather channel.
Press W to find the active weather channel in your area from 7 Dre—programmed
NOAA channels. It is possible that your area is covered by more than lweather
station.
When you press W, the BCZ48CLT immediately finds an active broadcast. If the
broadcast sounds weak and distant, press W again to look for a closer station.
Note
All weather channels transmit continuous broadcasts. Once the Weather Scan
stops on a transmission, it remains on that channel. Weather Scan does not
resume automatically. You must press W again to resume weather scanning
In some parts of the country. you may not be able to monitor weather broadcasts,
such as in low—lying areas. Normally a higher location improves the reception.
To exit Weather mode, press 8, M, or turn off the scanner.
Note
Do not program a weather frequency into lot the 20channels. Because weather
channels transmit continuously, the scanner remains on that channel,
disrupting the scanning cycle. The Weather Scan feature is provided
specifically to avoid this occurrence.
Weather Alert
With this unique feature, the BCZ48CLT can function as a severe weather
warning radio. This is especially useful when your area is expecting severe
weather conditions late at night. Just set the scanner to Weather Alert mode
and sleep peacefully! The BCZdSCLT will awaken you with a loud siren whenever
your local NOAA weather station broadcasts a severe weather emergency tone.
To use Weather Alert:
First, press W a few times to find your best local weather broadcast. The
Weather mode must be selected to activate the Weather Alert mode.
Press A. The LCD displays ALERT, and the BCZ48CLT is silent. The BCZ48CLT
now functions as a Weather Alert radio, waiting to receive a severe weather
emergency tone.
When the scanner receives an emergency tone from your local NOAA weather
station, it responds with a loud siren at maximum volume (regardless of the
volume control setting). The siren continues until the emergency tone stops
transmitting. When the siren stops, you can hear the emergency message being
broadcast. The ALERT blinks to indicate that the scanner has received an
emergency tone at least once. The BC24BCLT remains in Weather Alert mode and
responds with a siren if another emergency tone is broadcast.
To stop the siren manually and exit Weather Alert mode, press any of these
keys: W, M, or 8.
Testing the Weather Siren
You can test the siren in any mode to hear how it sounds and to ensure that
the circuitry is working.
Press and hold W, then press A to start the siren.
To stop the siren, press any key.
Priority Scanning
Your BCZ480LT has a fixed Priority Channel, Channell. Priority Scan works
like a dual watch function. When you activate Priority Scan mode, the scanner
starts sampling, or keeping track of the activity on Channel] while listening
to other channels. A constant PRI appears on the LCD display
Note
Priority Scan mode does not work when the scanner is in Weather Alert mode.
Every Zseconds, the scanner checks Channel] for activity. If a signal is
present, Channel] is monitored until the transmission ends. When the signal
stops for more than Zseconds, normal operation resumes.
First, program the frequency most important to you into Channell.Press P to
set the scanner in Priority Scan mode. PRI appears on the display. To exit
Priority Scan, press P again. The PRI disappears from the LCD display.
Channel Lockout
You can lock out a channel so it is not scanned. Locked out does not erase
the frequency from the channel. You can lock out up to 19 channels, including
the Priority channel, but not all 20 channels. Lockout information is retained
in memory when the scanner is turned off.
Example: Suppose you want to lock out ChannelZ because it stops on
transmissions you don’t want to hear.
Press L when the scanner stops on Channelz. The scanner locks out ChanneIZ,
immediately advances to the next channel that is not locked out, and resumes
scanning. In the Manual mode. press L to lock out the displayed channel.
Pressing L does not advance to the next channel in Manual mode.
L/O appears in the LCD display to indicate the displayed channel is locked
out. Whenever you want to search for channels that are locked out, press
M repeatedly to go through all ZOchanneIs. If a channel is locked out, the
L/0 indicator shows.
Restoring a Locked Out Channel
To unlock a channel so that it can be monitored during scanning:
Use M to find the locked out channel.
Press L again to unlock the displayed channel. The L/0 indicator disappears.
About the Unit
Helpful Hints
General Use
Turn the scanner off before disconnecting the power. Always write down the
programmed frequencies in the event of memory loss. If memory is lost, simply
reprogram each channel. The display shows MEMORY LOSS indicator when there
has been a memory loss. Always press each keypad button firmly until you hear
the entry tone for that key entry.
Location
If strong interference or electrical noise is received, relocate the scanner
or its antenna away from the source of the noise. If possible, a higher
elevation, may provide better reception. Also try changing the height or angle
of the antenna.
Do not use the scanner in high—moisture environments such as the kitchen or
bathroom. Avoid placing the unit in direct sunlight or near heating elements
or vents. Do not plug the scanner into an outlet control led by a wall switch
as prolonged periods without power will cause scanner memory loss.
Cleaning
Disconnect the power to the unit before cleaning. Clean the outside of the
scanner with a mild detergent. To prevent scratches, don’t use abrasive
cleaners or solvents. Be careful not to rub the LCD Display window. Do not
use excessive amounts of water.
Repairs
Do not attempt any repair. The scanner contains no serviceable parts. Contact
the Uniden Customer Service Center or take it to a qualified repair
technician.
Birdies
All radios are subject to receiving undesired signals or birdies. If your
scanner stops during Scan mode and no sound is heard, it may be receiving
a birdie. Birdies are internally—generated signals inherent in the
electronics of the receiver. Press 8 to resume scanning.
10
Press the Weather key again to find the active channel. Then press the Alert
key again.
If you still cannot get satisfactory results and want additional information,
or to return the unit for service, please call or write the Uniden Parts and
Service Division. The address and phone number are listed in the Warranty
at the end of this manual.
Technical Specifications
Certified in accordance with FCC Rules and Regulations PartlS Sub—Part C as
of date of manufacture.
Band Coverage: ll] bands
Frequency Coverage: 29.0-29.7 MHz 10 Meter Amateur Band 29.7—50.0 MHz Low
Band 50. 0—54. 0 MHzG Meter Amateur Band137—144 MHz Military Land Mobi Ie144—148
MHz 2 Meter Amateur Band 148-174 MHz VHF High Band Above bands in 5 kHz steps
406—420 MHz Federal Government 420—450 MHz 70cm Amateur Band450—470 MHZ UHF
Standard Band 470—512 MHz UHF-"T" Band Above bands in lZ.5kHz steps and AM/FM
Radio Freq.
Sensitivity (nominal) lZdB SINAD: 0.3uV 29—54MHZ 0.4 uV 137—174 MHz 0.6 uV
406-5l2 MHz.
Selectivity (nominal):
—6 dB at 8 kHz (l62.4MHZ 20dBQS) —50 dB at 15 kHz (162.4MH1 ZOdBQS)
Channels: 50
Scan Rate: Up to 12 channels per second
Scan Delay: 2seconds
Audio Output (nominal): 0.85W 10%TDH
Power Requirements: ll] VAC using AC—144U AC Adapter
Antenna: Telescoping (included) AM Radio Loop ANT
External Jacks:
Antenna jack External speaker AClOV power jack
Size: 205 (W) x13!) (D) x 73 (H)
Weight: 600g
Features, specifications. and availability of optional accessories are all
subject to change without notice.
11

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