Page 1: Table Of Contents
Introduction ........3 Important Notice ....... 4 Terminology .
Page 2 Searching a Trunked Bank ....39 ID Hold Mode ......41 ID Lockout .
Page 3: Introduction
BC 235XLT TrunkTracking™ and automatic scanning capabilities. It can store frequencies such as police, fire/emergency, marine, air, amateur, and other communications into 10 banks of 30 channels each. Use your new scanner to monitor: 800 MHz Trunked Public Safety Systems Police and Fire Departments (including rescue and paramedics) NOAA Weather Broadcasts...
Page 4: Important Notice
The installation, possession, or use of this scanning radio in a motor vehicle may be prohibited, regulated, or require a permit in certain states, cities, and/or local jurisdictions. Your local...
Page 5: Terminology
You can choose between two speeds while searching. Turbo Search , a new feature for Uniden scanners, can search the VHF FM bands at up to 300 channels per second. What is Trunk Tracking? Conventional scanning is a simple concept.
Page 6 In a trunked radio system, which contains up to 29 different frequencies, radio users are divided into groups, often called talk groups, and these talk groups are assigned specific IDs. When someone in a talk group uses their radio, a brief bust of data is broadcast before each transmission.
Page 7: Feature Highlights
Feature Highlights Trunk Tracking – Follow 800 MHz trunked public safety and public service systems just as if conventional two-way communications were used. 300 Channels – Program one frequency into each channel. You must have at least one channel programmed to use the Scan mode. 12 Bands, 10 Banks –...
Page 8: Where To Obtain More Information
If you have access to the Internet, you may want to visit www.trunktracker.com , which is under development, and may contain manufacturer information, frequency data, and ID information as it becomes available. For more information about Uniden and our other products, visit www.uniden.com .
Page 9: Included With Your Scanner
Included with Your Scanner If any of these items are missing or damaged, immediately contact your place of purchase or Uniden Customer Service at: (800) 297-1023, 8:00 a.m. to 5:00 p.m., Central, Monday through Friday. Antenna Belt Clip AC Adapter...
Page 10: Setup
These are helpful guidelines when using your new scanner: If your scanner receives interference or electrical noise, move the scanner or its antenna away from the source. If you 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.) Use the included earphone or an optional stereo...
Page 11: Charging The Battery Pack
Replace cover and press down until it clicks into place. Charging the Battery Pack Use the AC Adapter/Charger to power the from an AC outlet. Use only the supplied AC Adapter (AD70U) or one of the optional power You can use your scanner while the battery charges. To fully charge the battery, leave the AC Adapter/Charger connected for 14 –...
Page 12: Crx120 Battery Charger
CRX120 Battery Charger The CRX120 charger allows you to charge the extra battery included with your scanner. You can also charge the battery inside your scanner at the same time. This way you can always have a charged battery ready to go. Charging the Spare Battery To fully charge the extra battery in the CRX120, you should leave the battery in the charger for 14 –...
Page 13: Adapter Safety Feature
Connecting the Charger to Your Scanner You can charge both batteries at the same time. To fully charge both batteries, you should leave the AC Adapter/Charger connected for 14 – 16 hours. Follow steps 1 and 2 under Charging the Spare Battery on page 12, then connect the charging...
Page 14: Flexible Antenna
Flexible Antenna Attach the flexible antenna to the BNC connector. Belt Clip Do not tighten the screws too tight. You can damage the case or clip.
Page 15: Basic Operation
Basic Operation Note: You can fold out the Front Cover to see the Controls and Indicators while reading this Guide. Setting the Squelch To set the squelch, you must be in the Manual mode, and you should not be receiving a signal on your scanner. Press until you do not hear a signal.
Page 16: Keylock
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. STRONG SIGNALS MEDIUM SIGNALS WEAK SIGNALS Turn SQUELCH back counter-clockwise just until the hiss stops. Now the “Squelch Gate” allows only clearer signals through.
Page 17: Programming
Before the BC 235XLT you must program a frequency into at least one channel. Repeat this procedure for each channel you want to program. Select frequencies from your starter guide. Press Select a channel. a. Enter the channel number. b. Then press Programming can begin conventional scanning, 9 10...
Page 18 Enter the frequency. a. Enter the frequency number. b. Then press Note: To clear a mistake while entering the frequency, press If you enter a frequency which is outside the scanner’s frequency bands, a distinctive beep sounds. Press and go back to Step 4.
Page 19: Duplicate Frequency Alert
Duplicate Frequency Alert If you enter a frequency which is stored in another channel, you hear a beep and the other channel displays. Press to start again —OR— Press again to store the frequency in both channels. Programming Tips Do not program a weather frequency into one of the channels, since weather channels transmit continuously.
Page 20: Deleting A Stored Frequency
Deleting a Stored Frequency To delete a stored frequency: a. Press b. Then press Channels with no frequencies are automatically locked out. 9 10...
Page 21: Scanning
After programming frequencies, simply press to begin scanning. The indicator for each bank which will be scanned appears in the display, while the bank being currently monitored flashes. You can deselect banks from active scanning by pressing their number on your keypad.
Page 22: Channel Lockout
Press to stop on a channel during scanning. Press to resume scanning. Channel Lockout You can lockout any channel so it is not reviewed during normal scanning. You can restore the channel to scanning whenever you wish. Lockout in Manual Mode Press Select a channel.
Page 23: Lockout In Scanning Mode
Lockout in Scanning Mode If the scanner keeps stopping on a particular channel due to noise or too frequent transmissions, you may want to keep that channel from scanning. Wait until the scanner stops at the channel. Then press The scanner immediately resumes scanning because the locked out channel is...
Page 24: Restore A Locked Out Channel
Restore a Locked Out Channel Press Select a locked out channel. a. Enter the channel number. b. Then press again. Press to unlock the channel. Restore All Locked-Out Channels You can restore all locked-out channels in a bank only when a bank is selected for scan. If you have deselected a bank and you want to restore all of its locked-out channels using the steps below, you must press the number of the bank on your keypad.
Page 25: Priority Scan
Press and hold for about two seconds. You will hear two beeps when all the channels have been restored. Priority Scan When Priority Scan is turned on, your scanner checks the priority channel every two seconds for activity. If a signal is present on the priority channel, your scanner monitors the channel until the transmission ends, then resumes normal scanning.
Page 26: Changing The Priority Channel
Changing the Priority Channel You cannot eliminate the Priority Channel, but you can change it to any of the 30 available channels in each bank. Press Select a new Priority Channel. a. Enter the channel number. b. Then press again. Press and hold for two seconds to designate this...
Page 27: Searching
Setting a Search Range BC 235XLT find frequencies if you don’t have a frequency guide available or if new stations have been added since your guide was published. Press to stop scanning. Using your keypad, enter the lowest frequency of your search range.
Page 28: Search Hold Feature
Search Hold Feature Press at anytime to stop the search. Press to move to the next higher frequency —OR— Press to move down to the previous frequency. Press to resume searching. Data Skip A scanner will normally stop on any transmission it receives.
Page 29: Channel Skip
Channel Skip If a particular channel continues to interrupt search scanning, it is possible to set your scanner to skip the frequency. To skip a frequency, press Note: You can program up to 20 skip frequencies. The 21st skip frequency entered causes the first skipped frequency to unlock.
Page 30 Press Press Press when the scanner stops at the frequency you want. Press to store the frequency in the channel you selected. Note: After this step you are in manual mode. To store another frequency, select another channel for the new frequency. Repeat steps 6 through 8 for all the Search frequencies...
Page 31: Svc Scanning
SVC Scanning The Service Scan 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. Press POLICE appears beneath the blinking channel number, and a frequency displays.
Page 32 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. Press to scan the WX band. Note: It’s possible to receive more than one weather broadcast in your area.
Page 33: Svc Scan Lockout
SVC Scan Lockout Follow these steps to lockout frequencies during Service scanning: Note: You cannot lockout weather frequencies. Press to stop the Service Scan. Press Press to resume scanning. Note: You can lockout up to 20 frequencies in SVC Scan mode.
Page 34 Press to select Service Scan mode. Repeat until you select the service mode you want. Press to begin scanning. When SVC Scan stops on a frequency you want, press Press to store the frequency in the channel you selected. 9 10 9 10...
Page 35: Trunk Tracking
Trunk Tracking Your BC 235XLT Type II, Type IIi, Hybrid, analog trunking systems 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.
Page 36 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...
Page 37: Setting The Squelch
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.
Page 38 The first step in tracking a trunked system is storing the frequencies in one of the 10 available banks in your scanner. Press and hold You will hear two beeps, and BANK and TRUNK will begin to flash in the display. Choose the bank you want to trunk track.
Page 39: Searching A Trunked Bank
Press either to select the next channel in the bank. Repeat steps 3 and 4 until all frequencies have been entered. Press to 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.
Page 40 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: Press The bank indicators begin to flash. Use the keypad to select the trunked bank you want.
Page 41: Id Hold Mode
ID Hold Mode During Search mode, you can hold on an ID without entering it into memory. Press Search mode. Use the keypad to enter the ID you want. Press HOLD flashes in the display. Press Search mode. Note: The ID Hold mode works in Scan List mode, and the steps are the same;...
Page 42: Id Lockout
ID Lockout Like conventional scanning, it’s possible to lockout unwanted traffic. This is particularly important in trunked systems because in many areas water meters, door alarms, traffic signals, and other mechanical devices are assigned IDs just like other users. Also some departments scramble or encrypt their communications, and you may want to lock out these unintelligible broadcasts.
Page 43: Restore All Ids
Restore all IDs To unlock all locked out IDs at once, follow these steps: Press and hold until you hear two short beeps. Press to unlock all the IDs at once. Note: If you unlock all the IDs, then the Scan List Memory mode displays.
Page 44: Channel Activity Indicators
Hold Mode Press This is where the trunk tracking effect is really noticeable. You can hold a specific talk group, such as fire department on-scene operations, no matter which frequency the group uses. ID Monitor Mode If you press and hold beeps, you will select the ID Monitor mode.
Page 45 The indicator which remains on, even if when there is no traffic, represents the frequency being used as the data channel. If an indicator turns on and you don’t hear a conversation, then the channel is probably being used for a telephone interconnect call or a private call.
Page 46: Scan Lists
Scan Lists Each bank of your bank or it can be a conventional scanning bank. When you designate a bank as a trunking bank, your scanner sets up 5 Scan Lists, which are simply lists used to store your favorite IDs. Each list can contain up to 10 IDs, so you can store a total of 50 IDs for each trunk tracking bank (500 if you use all banks as trunking banks!).
Page 47 Enter the Type II ID you want to store, and press —or— To enter a Type I ID: a. Enter the fleet number. b. Press c. Enter the subfleet number, and press Note: To clear a mistake while entering an ID, press twice, and start over.
Page 48 To restore a Scan List to active scanning, press its number again. Press to return to Trunk Tracking Search mode. To alternate your display between the trunking repeater indicators and the Scan List indicators, press Programming Scan Lists During Search To select a Scan List location and store an ID during Search mode, follow these steps: When your scanner...
Page 49: Deleting A Stored Id
To let your scanner automatically store an ID in an available Scan List location, follow these steps: Press when your scanner stops on an ID you want to store. Press to return to Trunk Tracking Search mode. Deleting a Stored ID To delete a stored ID: a.
Page 50: Fleet Map Programming
Fleet Map Programming If you have programmed a trunk tracking bank and select , you will see user IDs display on your screen. Since BC 235XLT will appear as numbers. However, if you notice a mix of odd and even user IDs, for example 6477, 2560, 6481, 6144, 1167, etc., then you are probably monitoring either a Type I or Hybrid system.
Page 51: Selecting A Preset Fleet Map
If you are in Trunking Scan mode: Press to return to conventional mode if you have been monitoring a trunking bank. Press and hold until you hear two short beeps. You’ll hear two short beeps and BANK and TRUNK will begin to flash in the display.
Page 52: Programming A Fleet Map
Press The scanner exits the Trunking Programming mode, acquires the data channel, and begins searching using the preset map you chose. Note: You will now begin to see Type I Fleet-Subfleet IDs. For example, 100-12, 100-9, 000-12, 400-8, etc. See User Defined Fleet Maps in the Appendix for more information about Type I IDs.
Page 53: Programming A Hybrid System
Press the size code for the first block. Press The next available block displays. Repeat Steps 7 and 8 until you have selected a size code for each block. For specifics about each size code, see Fleet Map Size Codes in the Appendix.
Page 54: Care And Maintenance
Care and Maintenance General Use Turn the scanner off before disconnecting the power or replacing the batteries. Always write down the programmed frequencies in the event of memory loss. If memory is lost, simply reprogram each channel. The display shows there has been a memory loss.
Page 55: Repairs
Repairs Do not attempt any repair. The scanner contains no user serviceable parts. Contact the Uniden Customer Service Center or take it to a qualified repair technician. Birdies All radios can receive “birdies” (undesired signals). If your scanner stops during Scan mode and no sound is heard, it may be receiving a birdie.
Page 56: Troubleshooting
Troubleshooting If your BC 235XLT following steps. Problem Scanner won’t work. Improper reception. Scan won’t stop. Scan won’t start. Weather Scan won’t work. 1. Adjust squelch threshold - refer to is not performing properly, try the Suggestion 1. Check the connections at both ends of the AC Adapter.
Page 57: Additional Information
If you still cannot get satisfactory results while using your scanner or if you want additional information, 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.
Page 58: Specifications
Specifications Certified in accordance with FCC Rules and Regulations Part 15, Subpart C, as of date of manufacture. Channels: Banks Service Bands: Frequency Range: Operating Temperature: Scan Rate: Search Rate: Scan Delay: Audio Output: Power Requirements: Antenna: External Jacks: Size: Weight: Features, Specifications, and availability of optional accessories are all subject to change without notice.
Page 59: Appendix
Preset Fleet Maps Preset Map E1P1 Block Size Code Preset Map E1P3 Block Size Code Preset Map E1P5 Block Size Code Preset Map E1P7 Block Size Code Appendix Preset Map E1P2 Preset Map E1P4 Preset Map E1P6 Preset Map E1P8 Block Size Code Block...
Page 60 Preset Map E1P9 Block Size Code Preset Map E1P11 Block Size Code Preset Map E1P13 Block Size Code Preset Map E1P15 Block Size Code Preset Map E1P10 Block Preset Map E1P12 Block Preset Map E1P14 Block Preset Map E1P16 Block Size Code Size Code Size Code...
Page 61: User Defined Fleet Maps
User Defined Fleet Maps Type I Programming Information When a Type I system is designed, the address information for all the IDs is divided into 8 equal sized blocks, numbered 0–7. When you program your scanner to track a Type I system, you must select a size code for each of these blocks.
Page 62 If you don’t already know the size codes used, you’ll have to guess at them. But since you don’t have to figure out all the blocks at once, this isn’t as hard as it seems. Select a size code for a block, and then press communications.
Page 63 Size Code Restrictions If you select size code S-12, S-13, or S-14, there are some restrictions as to which blocks can be used for these codes. S-12 can only be assigned to Blocks 0, 2, 4, or 6. S-13 can only be assigned to Blocks 0 and 4. S-14 can only be assigned to Block 0.
Page 65 WARNING! 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.
Page 66: Front View
1. DC Power Jack 2. Scan Key 3. Manual Key 4. Trunking Key 5. Decimal Key 6. Service Key 7. Limit Key Down Key 8. Priority Key Turbo Key 9. Delay Key Front View BANK TRUNK 888.8888 DATA POLICE FIRE/EMG AIR MRN W X SCAN SRCH PRI HOLD DLY L /O 10.
Page 67 Top View and Display 19. Antenna Connector 20. Earphone Jack 21. Squelch Control 22. On/Off Volume Control BANK TRUNK 888.8888 DATA POLICE FIRE/EMG AIR MRN W X SCAN SRCH PRI HOLD DLY L /O 23. Channel Display 24. Frequency Display 25.
Page 68 WARRANTOR: UNIDEN AMERICA CORPORATION (“Uniden”) ELEMENTS OF WARRANTY: Uniden warrants, for one year, to the original retail owner, this Uniden Product to be free from defects in materials and craftsmanship with only the limitations or exclusions set out below.
Page 69 4,156,193 4,157,505 4,179,662 4,219,821 4,270,217 4,398,304 4,409,688 4,455,679 4,461,036 4,521,915 4,597,104 4,627,100 4,841,302 4,888,815 4,932,074 4,947,456 5,014,348 5,199,109 5,408,692 5,428,826 5,438,688 5,448,256 5,465,402 5,471,660 5,483,684 5,548,832 5,551,071 and other patents pending. ©1997 Uniden America Corporation. All rights reserved. Printed in the Philippines...

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