UBC 248CLT 8 BAND, 50 CHANNEL SCANNER with AM/FM RADIO • FULLY PROGRAMMABLE • FULL FREQUENCY LCD READOUT • ALARM CLOCK • AM/FM RADIO • CHANNEL LOCKOUT • PRIORITY CHANNEL • SCAN DELAY • MEMORY BACKUP • FREQUENCY SEARCH Reference Guide
Precautions Before you read anything else, please observe the following: Uniden DOES NOT represent this unit to be waterproof. To reduce the risk of fire or electrical shock, DO NOT expose this unit to rain or moisture. 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 Reference Guide, could void your authority to operate this product. Uniden® and Bearcat® are registered trademarks of Uniden Corporation.
TABLE OF CONTENTS Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 About Scanning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Taking Proper Care of Your Scanner . . . . . . . . . . . . . . . . . .2 Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Installing the UBC248CLT . . . . . . . . . . .
INTRODUCTION About Scanning Scanning is easy and fun with the UBC248CLT 50-Channel Base Scanner with AM/FM Radio. What is Scanning? Unlike standard AM or FM radio stations, most 2-way communications do not transmit continuously (see Types of Communication below). The UBC248CLT scans programmed channels at rate of up to 12 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.
■ ■ Many more in the 66-88MHz, 137-174MHz, and 406-512MHz ranges AM/FM radio You must program a frequency into each channel you want to use. 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 unplug the scanner for prolonged periods of time, lack of power will cause the clock to reset.
GETTING STARTED Installing the UBC248CLT AM RADIO ANT AC 10V USE AC-144U ONLY ANT EXT.SP Standard 240V AC Wall Outlet AC Adapter Model AC-144U 1. Insert the small plug at the end of the AC Adaptor cord into the AC 10V jack on the scanner. 2. Plug the AC Adaptor into any standard 240V AC wall outlet. Do not plug into an outlet controlled by a wall switch; it could cause clock reset. 3. Plug the Telescoping Antenna into the ANT. jack. Extend the antenna to its full height vertically.
OPERATION Controls and Functions 7 8 9 10 11 1 6 2 LIMIT/ SEARCH HOLD/ 5 3 4 12 15 19 20 13 16 18 21 22 17 14 1. LCD Display Displays time, channel, frequency, and functions. (Page 6) 2. Numeric Keys Press to program a frequency into each channel for scanning. Also, press for time entries and direct channel access with MANUAL key. And press for channel presets in Radio Mode 3. Decimal Key Press to enter the decimal point in the frequency.
10. DELAY Key Turns Delay function. When Scan stops on a channel it causes scanner to remain on that channel for 2 seconds before the scanning resumes to wait for a possible reply. 11. ALARM Key Turns the Tone Alarm. Turns the Radio Alarm ON/OFF by pressing the key more than 2 seconds. 12. ALARM SET Key Press more than 2 seconds to enter the Alarm Time Set mode. 13. TIME SET Key Press more than 2 seconds to enter the Present Time Set mode. 14.
26 27 31 28 29 30 32 33 34 35 23. ALARM Appears when Alarm function is active. Flashes in the snooze function mode. 24. BANK Appears when in Scan Mode, Manual Mode. 25. 1-5 In Scan Mode, displays the bank being scanned. In Manual Mode, displays the bank number associated with the channel. 26. SCAN Appears when in Scan mode. 27. PRI Displays when priority function is active. 28. HOLD Displays when in Manual. 29. L/O Appears when the current channel is locked out. 30.
Scanning Overview The UBC248CLT has 50 memory channels. Each can be programmed to store one frequency within the band of frequency coverage. (For a listing of frequency ranges and bands, see Technical Specifications on page 32.) When you press SCAN, the UBC248CLT 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 display, and the bank number flashes.
CLOCK SET-UP Initial Clock Set-up You may bypass the steps to set the clock. The scanner will function as normal, but the clock and alarm features will not function. 1. When power is initially applied, the display flashes i2:00 P after a short delay. 2. Enter the time directly by pressing the numeric keys. OR Enter the time by pressing the ▼ or ▲ keys. To scroll through more quickly, press and hold ▼ or ▲ . LIMIT/ SEARCH HOLD/ 3. Press AM/PM to select the desired setting, either am. or pm. LIMIT/ 4.
USING THE SCANNER Set the Squelch 1. Turn SQUELCH fully clockwise to the highest setting. MIT/ SEARCH HOLD/ 2. Press SCANNER to turn on the scanner. 3. Adjust the VOLUME control until you can hear a steady noise.
4. To set the SQUELCH control to AUTO turn fully counter clockwise until control clicks into place. Or, manually set squelch as follows: ■ Think of squelch as a gate. Turn SQUELCH fully counter clockwise. This raises the “Squelch Gate” so high that only very strong signals can get through. HOLD/ ■ Turn SQUELCH fully clockwise until you hear a hiss. This lowers the “Squelch Gate” so that everything gets through — noise, weak signals, and strong signals.
Programming Tips for Scanner ■ ■ ■ ■ ■ ■ ■ ■ Program one frequency per channel. Channel 1 is the location of the default priority channel. Program the most important frequency, or the one of major interest, into Channel 1. You may also select any other channel to be the priority channel. To quickly program a series of channels, start with the lowest number channel. For example, when you are programming five new frequencies into Channels 4 through 8, start with Channel 4.
Programming Scanner Frequencies Before you can use your UBC248CLT scanner, you must program the channels. Follow these steps: Example: Program 420.0150 MHz into Channel 12. Press scanner button to switch to scan mode. 1. Press MANUAL to stop scanning. LIMIT/ 2. To select the channel (12), press 1, then 2 on the numeric keypad. Then press MANUAL again. OR Press ▼or ▲ until channel 12 appears in the display. SEARCH LIMIT/ 3.
4. Press E to complete the entry. The channel digits stop flashing. Display shows ALARM Deleting a Scanner Frequency If you want to delete a stored frequency, follow these steps: Example: Delete the frequency in Channel 12. 1. Press MANUAL to stop scanning. LIMIT/ SEARCH HOLD/ 2. To select the channel (12), press 1, then 2 on the numeric keypad. Then press MANUAL again. OR Press ▼or ▲ until channel 12 appears in the display. LIMIT/ 3. Press 0, then E to complete the entry.
4. The following screen appears. About Memory Back-up Your UBC248CLT has a convenient memory back-up system. In the event of a power failure, the scanner will retain channel information for an indefinite amount of time. Channel information is stored in non-volatile memory. Scanning Mode Press SCAN. (When the scanner is first turned on, it is automatically in Scan mode.) Scanning automatically stops on any active channel, except those channels locked out.
To restore the bank number, press the number on the keypad. The bank number appears in the display. . The bank number associated with channel currently being monitored flashes. Manual Mode Press MANUAL any time to stop scanning. The scanner remains on the displayed channel. Press MANUAL to step up to the next channel. If desired, you can press MANUAL repeatedly to manually scan all 50 channels, one press per channel, including the channels that are locked out.
Direct Channel Access for Scanner This feature allows you to instantly access a specific channel you want to monitor. Example: Select Channel 4. 1. Press MANUAL to exit scan mode. LIMIT/ SEARCH HOLD/ 2. Press 4. When you press 4, the display changes to 4, but the scanner still monitors the previous channel. 3. Press MANUAL again to successfully complete the direct access to Channel 4. Priority Scanning Priority Scan works like a dual watch function.
To Set the Priority Channel Your UBC248CLT has one default Priority Channel per bank. Each priority channel is, set at the first channel in the bank. To change the priority channel determine the frequency most important to you and program it into the desired channel location. Example: To set Channel 5 as the priority channel. 1. Press MANUAL to exit the Scan Mode. LIMIT/ SEARCH HOLD/ LIMIT/ SEARCH 2. Press 5 and MANUAL for direct channel access. Or select channel 5 using the ▼ or ▲ keys. HOLD/ 3.
Channel Lockout You can lock out a channel so it is not scanned. Channel Lockout does not erase the frequency from the channel. You can lock out up to 50 channels, including the Priority channel. Lockout information is retained in the memory when the scanner is turned off. To Lock out a Channel Example: Suppose you want to lock out Channel 2 because it stops on transmissions you don't want to hear. Press LOCKOUT when the scanner stops on Channel 2.
2. Press LOCKOUT again to unlock the displayed channel. L/O no longer appears in the display. LIMIT/ SEARCH Restore All Locked Out Channel To unlock all channels, you must be in the Manual Mode. 1. Press MANUAL. LIMIT/ SEARCH HOLD/ 2. Press and hold LOCKOUT to unlock all channels. The L/O indicator goes out on any channel previously locked out.
To Set Delay in Scan Mode 1. Press SCAN. LIMIT/ SEARCH HOLD/ 2. When your scanner stops on a channel, press DELAY. DLY appears in the display and scanning resume 2 seconds after the transmission ends. LIMIT/ SEARCH HOLD/ To Set Delay in Manual Mode 1. Press MANUAL. LIMIT/ 2. Select the channel you want using your keypad. 3. Press MANUAL again. 4. Press DELAY. DLY appears in the display. HOLD/ .
SEARCHING The UBC248CLT can search bands or range of frequencies you specify to find desired frequencies. This is useful if user does not have a Frequency Directory handy, or if new stations have been added since the Directory was published. Follow the steps below in programming range of frequencies: 1. Press MANUAL to stop scanning. 2. Use numeric keypad to enter the lowest frequency of the range you want to search. 3. Press LIMIT. 4. Enter highest frequency of the range you want to search. 5.
Locking Out Frequencies in Search During search, you might repeatedly encounter frequencies that you are not interested in. Also, all scanners are subject to receiving internally generated frequencies (called birdies) that stop you scanner’s search when there is no real signal present. In either case, you can lock out such frequencies to make your scanner search more efficiently. To do this follow the steps below. 1. When the scanner stops on a frequency you want to lock out. Press LOCKOUT.
ADDITIONAL FEATURES LCD Backlight The LCD Backlight comes on when the power is applied. In Scan Mode and Manual Mode, the backlight stays on bright continuously. In the other modes, the backlight stays bright for ten seconds and then switches to dim. Press any key and the display switches back to bright for ten seconds. Programming Radio AM/FM Frequencies Before you can use the Radio Mode, you must program the channels with your favourite radio stations. You can program up to 20 stations (10 AM/10 FM).
3. Press ▼ or ▲ to set the desired frequency. The channel number flashes. Continue to press ▼ or ▲ to step through the frequencies in 100kHz steps. Or, press and hold ▼ or ▲ to step through the frequencies more quickly until 92.5000MHz appears in the display. 4. Press E to complete the entry. The channel digits stop flashing. 5. Adjust the VOLUME control to a comfortable listening level. HOLD/ Continue to program your favourite radio stations in the other nine FM channels using the above example.
Deleting a Stored Radio Frequency If you want to delete a stored frequency, follow these steps: Example: Delete the frequency in Channel 9. 1. Press RADIO AM/FM to enter into the Radio Mode. 2. To select the channel (9), press 9 on the numeric keypad. 3. Press the ▼ or ▲ keys until 000.0000 appears in the display. (In FM 000.0000 is between I08.0000 and 87.5000. In AM 000.0000 is between I629 and 522.) 4. Press E to complete the entry. The channel digits stop flashing. 5. The following screen appears.
Reset the Clock Time 1. After the scanner has been turned on, to reset the clock time simply press and hold the TIME SET key. The display digits flash. LIMIT/ 2. Enter the time directly by pressing the numeric keys. OR Enter the time by pressing the ▼ or ▲ keys. SEARCH LIMIT/ HOLD/ SEARCH 3. Press AM/PM to select the desired setting either a.m. or p.m. LIMIT/ 4. Press E to complete the entry. The display stops flashing..
Set the Alarm Time There are two types of alarm sounds with this scanner., Tone Alarm and Radio Alarm. Both types set the alarm time in the same manner. 1. After the clock time has been entered, press and hold ALARM SET until the time indicated and ALARM indicator flashes in the display. LIMIT/ 2. Enter the alarm time directly by pressing the numeric keys. OR Enter the time by pressing the ▼or ▲keys. SEARCH LIMIT/ HOLD/ SEARCH HOLD/ 3. Press AM/PM to select the desired setting, either a.m. or p.m.
4. Press E to complete the entry. 5. ALARM indicator and time stop flashing, but remain on. 6. The alarm time remains in the display for five seconds, then returns to current mode. Set Alarm to Tone Mode Press ALARM to turn on the alarm function. The ALARM indicator and current alarm time are displayed. When the alarm goes off, it will sound as a series of beeps gradually growing louder. The alarm will continue for approximately 15 minutes, if no action is taken.
Turn the Alarm Off Press ALARM to deactivate the alarm function. When the alarm is off, the ALARM indicator and current alarm time are no longer displayed. Only the current time displays. If you would like to listen to the scanner while waking up, turn the scanner on. The snooze function continues to operate while the scanner is turned on and in any mode. If you find the Tone Alarm too loud, select the Radio Mode instead. The volume is adjustable.
Set Alarm to Radio Mode Before you set the Radio Alarm, make sure the AM or FM channel is selected and the VOLUME control is set to the desired level. The scanner must be turned off (Clock Mode), to be woken up by the radio alarm. 1. Press OFF. 2. Press and hold ALARM for more than 2 seconds. When the alarm is on, the ALARM and RADIO icons flash for 5 seconds. 3. The ALARM remains on. When the alarm goes off, it will play the radio station that was previously selected.
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 scanner memory loss. ■ If scanner memory is lost, simply reprogram each channel. ■ Always press each keypad button firmly until you hear the entry tone for that key. Location ■ ■ ■ If your scanner receives strong interference or electrical noise, relocate the scanner or its antenna away from the source of the noise.
TROUBLESHOOTING If your UBC248CLT is not performing properly, try the following steps. Problem ■ ■ ■ Scanner won’t power up. Poor reception. Scan won’t start. Solution ■ Check the connections at both ends of the AC Adaptor. ■ Turn on the wall switch of your room. You could be using an outlet controlled by the wall switch. ■ Move the AC Adaptor to another wall outlet. ■ Check antenna connection. ■ Move the antenna.
Problem ■ Scan won’t stop. Solution ■ Adjust squelch to the threshold (Page 9). ■ Check the antenna connection. ■ Check to see if many of the channels are locked out. If so, the scanner has less chance of finding an active channel. ■ Review each channel’s frequency to see if it is correct and no memory has been lost. ■ It is possible that none of the programmed frequencies are active at this time.
TECHNICAL SPECIFICATIONS Band Coverage: Frequency Coverage: Scanner 8 bands plus and AM/FM Radio 66-88 MHz VHF Low Band 12.5 KHz step 137-144 MHz Land Mobile 144-148 MHz 2 Meter Amateur Band Above bands in 5 kHz steps 148-174 MHz VHF High Band 406-420 MHz Federal Government 420-450 MHz 70cm Amateur Band 450-470 MHz UHF Standard Band 470-512 MHz UHF”T” Band Above bands in 12.5kHz steps Radio 520 to 1629 KHz (AM Radio Band) 9 KHz step 87.
ONE-YEAR LIMITED WARRANTY Uniden UBC248CLT Note: Please keep your sales docket as it provides evidence of warranty. WARRANTOR: Uniden Australia Pty. Limited ACN 001 865 498 Uniden New Zealand Limited ELEMENT OF WARRANTY: Uniden warrants to the original retail owner for the duration of this warranty, its UBC248CLT Scanner (herein after referred to as the Product), to be free from defects in materials and craftsmanship with only the limitations or exclusions set out below.
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