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Understanding Scanning

this was the primary way that radio systems

operated.
Even today, there are many 2-way radio users who

operate using a conventional system:

• Aircraft

• Amateur radio

• PRS (UHF CB) users

• Broadcast AM/FM/TV stations

• Many business radio users

When you want to store a conventional system, all

you need to know is the frequencies they operate

on. When you are scanning a conventional system,

the scanner stops very briefly on each channel to

see if there is activity. If there isn’t, the scanner

quickly moves to the next channel. If there is, then

the scanner pauses on the transmission until it is over.

Simplex Operation

Simplex systems use a single frequency for both

transmit and receive. Most radios using this type of

operation are limited to line-

of-sight operation. This

type of radio is frequently used at construction job

sites, and with inexpensive

consumer radios such as

PRS (UHF CB) radios. The range is typically 1.5-12

km, depending upon the terrain and many other factors.

Repeater Operation

Repeater systems use two frequencies: one transmits

from the radio to a central repeater; the other

transmits from the repeater to other radios in the

system. With a repeater-based system, the repeater

is located on top of a tall building or on a radio tower

that provides great visibility to the area of operation.

When a user transmits (on an input frequency), the

signal is picked up by th

e repeater and retransmitted

(on an output frequency). The user’s radios always

UBC73XLT Paper OM.fm Page 12 Monday, May 14, 2007 9:13 AM

UBC73XLT OM.indd 12

23/9/11 1:50:19 PM

Содержание UBC73XLT

Страница 1: ...UBC73XLT SCANNER 100 Channels 6 Pre Programmed Service Banks with Close Call RF Capture For more exciting new products please visit our website Australia www uniden com au New Zealand www uniden co nz ...

Страница 2: ...one may be hazardous to your hearing Turn down volume before connecting the earphone and then adjust volume to suit WARNING Uniden does not represent this unit to be water proof To reduce the risk of fire or electrical shock do not expose this unit to rain or moisture Trademarks used throughout this manual are the property of their respective holders Precautions ...

Страница 3: ...BC73XLT Controls and Display UBC73XLT Controls and Display UBC73XLT Squelch Volume UBC73XLT Controls and Display Keypad Headphone Jack Display DC 6V Jack Power Antenna see Connecting the Antenna on Page 20 ...

Страница 4: ... Connecting an Extension Speaker 21 Attaching the Belt Clip 22 About Your Scanner 23 A Look At The Keypad 24 A Look At The Display 27 Understanding Banks 29 Operation 30 Turning On The Scanner and Setting Squelch 30 Storing Known Frequencies Into Channels 30 Searching For and Temporarily Storing Active Frequencies 31 Scanning the Stored Channels 32 Manually Selecting a Channel 33 Special Features ...

Страница 5: ...ck 46 Using the Display Backlight 46 Troubleshooting 47 Resetting the Scanner 49 Care and Maintenance 50 General Use 50 Location 50 Cleaning 50 Repairs 51 Birdies 51 Specifications 52 Optional Accessories 54 One Year Limited Warranty 55 ...

Страница 6: ... help you detect and identify strong local radio signals in your area You can program up to 100 frequencies into the scanner s memory The scanner lets you scan transmissions and is preprogrammed with service banks for your convenience You can quickly search those frequencies most commonly used by police and other agencies without tedious and complicated programming Use your scanner to monitor Poli...

Страница 7: ...ar for each range Frequency Range MHz Step kHz Mode Transmission 25 0 27 995 5 AM Citizens Band Business Band 28 0 69 995 5 FM 10 Meter Amateur Band 70 0 88 0 12 5 FM 6 Meter Amateur Band 108 0 136 9875 12 5 AM Aircraft Band 137 0 147 995 5 FM 2 Meter Amateur Band 148 0 174 0 12 5 FM VHF High Band 400 0 512 0 6 25 FM Land Mobile Band ...

Страница 8: ...for a total of 100 frequencies so you can more easily identify calls Two Second Scan Delay delays scanning for about 2 seconds before moving to another channel so you can hear more replies that are made on the same channel Lock Out Function lets you set your scanner to skip over specified channels or frequencies when scanning or searching Priority Channels lets you program one channel in each bank...

Страница 9: ...ded time if the scanner loses power Three Power Options let you power the scanner using internal batteries external DC power using the included cigarette lighter charger or external AC power using an optional AC adapter Key Confirmation Tones the scanner sounds a tone when you perform an operation correctly and an error tone if you make an error Battery Low Alert warns you when battery power gets ...

Страница 10: ...ning be sure to read Understanding Scanning on Page 11 for a quick background on the technology behind the hobby The first thing you ll need to do is install batteries in the scanner Then you need to connect the included antenna to the scanner See Using Internal Batteries on Page 15 and Connecting the Antenna on Page 20 if you need any help doing this ...

Страница 11: ...C73XLT can search for active frequencies This is different from scanning because you are searching for frequencies that have not been programmed into the scanner When you select frequency bands to search the scanner searches for any active frequency within the lower and upper limits you specify When the scanner finds an active frequency it stops on that frequency as long as the transmission lasts ...

Страница 12: ...lex systems use a single frequency for both transmit and receive Most radios using this type of operation are limited to line of sight operation This type of radio is frequently used at construction job sites and with inexpensive consumer radios such as PRS UHF CB radios The range is typically 1 5 12 km depending upon the terrain and many other factors Repeater Operation Repeater systems use two f...

Страница 13: ...use the scanner Information On The Internet The Internet is a great source for current frequencies and information about scanning Many web sites have lists of frequencies for your area You can use a search engine to find and use them Make a list of the agencies you want to listen to then look up the frequencies and systems used by those agencies You may visit the Uniden websites listed below for i...

Страница 14: ...ems are missing or damaged contact your place of purchase Owners Manual Scanner and Belt Clip Antenna OWNER S MANUAL UBC73XLT SCANNER 6 Pre Programmed Service Banks with Close CallTM RF Capture 100 Channels Cigarette Lighter Charger Earphone Frequency CD Included With Your Scanner ...

Страница 15: ...included earphone or mono headset with proper impedance for private listening Read the precautions on the inside front cover of this Owners Manual Do not use the scanner in high moisture environments such as the kitchen or bathroom Avoid placing the scanner in direct sunlight or near heating elements or vents Using Internal Batteries You can power your scanner using two alkaline or rechargeable AA...

Страница 16: ...ATT only if you are using rechargeable batteries Never attempt to recharge non rechargeable batteries Non rechargeable batteries can get hot or burst if you try to recharge them 4 Install two batteries in the compartment as indicated by the polarity symbols and marked inside ...

Страница 17: ...very 15 seconds replace both batteries Using Rechargeable Batteries You can also use two rechargeable batteries to power your scanner Before you use Ni MH or Ni Cd batteries you must charge them The scanner has a built in circuit that lets you recharge Ni MH or Ni Cd batteries while they are in the scanner To charge the batteries set REG ALK BATT NI MH BATT inside the battery compartment to NI MH ...

Страница 18: ...liver more power if you occasionally let them fully discharge To do this simply use the scanner until it beeps every 15 seconds and flashes To prevent damage to Ni MH batteries never charge them in an area where the temperature is above 113 F 45 C or below 40 F 4 C If you connect an external power source to the scanner with REG ALK BATT NI MH BATT set to REG ALK BATT the scanner does NOT charge th...

Страница 19: ...lies 9 0 29V DC at least 800mA You must use a power source that supplies 9 0 29V DC and delivers at least 800mA Your standard 9 0 29V car battery should be sufficient The cord con nector s center tip must be set to positive and its plug must fit the scanner s DC 6 V jack The sup plied DC power cord meets these specifications Using a power cord that does not meet these specifi cations could damage ...

Страница 20: ...d and REG ALK BATT NI MH BATT is set to NI MH BATT the adapter powers the scanner and recharges the installed batteries at the same time Connecting the Antenna To attach the supplied flexible antenna to the connector on the top of your scanner align the slots around the antenna s connector with the tabs on the scanner s BNC connector Then slide the antenna s connector down over the scanner s conne...

Страница 21: ...onics store Connecting an Earphone Headphone For private listening you can plug a 3 5 mm mini plug earphone or mono headphones not supplied into the headphone jack on top of your scanner This automatically disconnects the internal speaker Connecting an Extension Speaker In a noisy area an optional extension speaker positioned in the right place might provide more comfortable listening Plug the spe...

Страница 22: ... Up Your Scanner Attaching the Belt Clip To make your scanner easier to carry when you are on the go use the supplied belt clip Use a Phillips screwdriver and the supplied screws to attach the clip to the scanner ...

Страница 23: ...ive frequencies you use the search function or refer to a frequency reference Besides searching within a selected frequency range you can also search your scanner s service banks Service banks are preset groups of frequencies categorized by the type of services that use those frequencies When you search and find a desired frequency you can store it into a programmable memory location called a chan...

Страница 24: ...hen release it appears on the display Then press the next key in the function key sequence while appears appears or disappears as you press Func If your scanner s keys seem confusing at first the following information should help you understand each key s function Key Name Description Hold Hold Holds the scan or the frequency search Press and hold Hold to increment channels continuously Func Switc...

Страница 25: ... pressing this key in combination with other keys Press and hold for more than 2 seconds to turn the scanner on or off 1 Pri 1 Enters a 1 Func Pri Sets and turns the priority function on or off 2 2 Enters a 2 Func Selects the search direction 3 Svc 3 Enters a 3 Func Svc Sets and turns the service search function on 4 4 Enters a 4 5 Dly 5 Enters a 5 Func Dly Sets and turns the delay function on or ...

Страница 26: ...ers an 8 Func Selects the search direction 9 Enters a 9 Clr Enters a decimal point Clr Clears a frequency you entered by mistake 0 L O 0 Enters a 0 Func L O Lets you lock out a selected channel or skip a specified frequency E Pgm E Enters frequencies into channels Func Pgm Lets you program the frequency Key Name Description ...

Страница 27: ...ears with numbers 1 10 appears when you lock the keypad appears only when the function mode is on appears while you store a frequency into a channel SRCH appears during search mode or appears during search mode alerts you when the battery power gets low appears when the scanner is set to a Close Call mode P appears when you select a priority channel SCN appears when you scan channels UBC73XLT F PG...

Страница 28: ...you locked out or a skip frequency DLY appears when you select a delay PRI appears when the priority feature is turned on POL rlr AIR MRN ucb or Acb appears along with an indicator that shows the current service bank during a service search ALT appears when the Close Call alert beep sounds while the Close Call function is on ...

Страница 29: ... Banks To make it easier to identify and select the channels you want to listen to the 100 channels are divided into 10 channel storage banks Each bank has 10 channels Use each channel storage bank to group frequencies such as those for the railroad police department or aircraft For example the police department might use eight frequencies in your town while the railroad uses an additional four Yo...

Страница 30: ... you want to store a frequency then press Func and Pgm The channel number appears 2 Use the number keys and to enter the frequency including the decimal point you want to store 3 Press E to store the frequency into the channel Notes If you entered an invalid frequency in Step 2 Error appears and the scanner beeps three times Enter a valid frequency The scanner automatically rounds the entered numb...

Страница 31: ...arch to find a transmission There are two search features available Service Search see below and Chain Search on page 38 Note When the scanner starts searching it auto matically turns on the delay function To turn delay on or off press Func Dly Service Search You can search for police railroad marine aircraft UHF CB and AM CB transmissions without knowing the specific frequencies used in your area...

Страница 32: ...he frequency and the lowest blank channel alternately appear 2 Press E to store the frequency into the blank channel If you want to select another channel press Func or Func before you press E You can also use the 0 9 key to select the bank If you entered a frequency that has already been entered elsewhere the scanner sounds an error tone and displays the channel that was duplicated If you entered...

Страница 33: ...g adjust Squelch until the audio mutes Manually Selecting a Channel You can continuously monitor a single channel without scanning This is useful if you hear an emergency broadcast on a channel and do not want to miss any details even though there might be periods of silence or if you want to monitor a specific channel To manually select a channel press Hold enter the channel number then press Hol...

Страница 34: ...ransmissions Unlike searching which requires the scanner to tune to a frequency to check for a transmission Close Call RF capture directly detects the presence of a strong nearby signal and instantly tunes to the source s frequency Notes Close Call RF capture works well for locating the source of strong local transmissions such as mobile and handheld two way radios in areas with no other strong tr...

Страница 35: ... One of the following Close Call options appears C C bnd Lets you select the Close Call band C C ALt Lets you select the Close Call alert settings C C PS Lets you turn Pager Screen on or off Pager Screen lets you set the scanner so it does not detect pager frequencies 2 Repeatedly press or to select the option you want then press E If you selected C C bnd one of the following band names appears bn...

Страница 36: ...you want appears then press E to select it Otherwise press if you do not want to select it Then skip to Step 9 5 Press E while C C Alt appears One of the following alert options appears ALt bEEP The scanner beeps when a Close Call signal is detected ALt Light The scanner flashes the display backlight when a Close Call signal is detected ALt bP Lt The scanner flashes the display backlight and beeps...

Страница 37: ...s Func once except in band select or program mode appears Every 2 seconds the scanner checks for frequencies in the range you specified in Setting the Close Call Options on Page 35 and interrupts the audio when it checks for a Close Call transmission in that range Notes Set the squelch tight where only strong signals are received while using Close Call To continue scanning normally while the Close...

Страница 38: ... chain search mode chain search hold mode and program band select mode The preset frequency ranges are Chain Search Mode Press Func Src to start chain search mode SRCH the enabled search bank number and or indicating the search direction appear The search bank number being searched flashes Bank No Frequency MHz Step kHz 1 25 0000 27 9950 5 2 28 0000 69 9950 5 3 70 0000 88 0000 12 5 4 108 0000 136 ...

Страница 39: ... the search direction downward and pressing Func changes the search direction upward or appears according to the current search direction Storing Frequencies Found During Chain Search into Channel Memory You can store frequencies you find in chain search mode or chain search hold mode 1 Press Func Pgm in chain search mode or chain search hold mode The lowest blank channel and bank appear 2 Press E...

Страница 40: ...ress Func PSrc or Func to increase the search bank number or Func to decrease it Hold down Func or Func for about 1 second to quickly move through the search bank numbers After choosing the search bank follow these steps to set the lower limit and upper limit frequency 1 Enter the lower limit frequency by using the 0 9 and keys 2 Press E to select the lower limit frequency 3 Enter the upper limit ...

Страница 41: ...ring the search or while the search stops You can skip a frequency when the search stops After the search skip frequency is set the scan ner starts direct search again Direct Entry Search Hold Mode To stop searching during direct entry search press Hold Hold appears In this mode pressing Func changes the search direction downward and pressing Func changes the search direction upward or appears dep...

Страница 42: ...ady been entered elsewhere the scanner sounds an error tone and displays the channel that was duplicated If you entered the frequency by mistake press To enter the frequency anyway press E to accept The scanner moves to program mode after you stored the frequency Search Skip Memory You can skip up to 50 specified frequencies during a search This lets you avoid unwanted frequencies or those already...

Страница 43: ...he search range the scanner beeps 3 times and does not search If you select more than 50 frequencies to skip each new frequency replaces a frequency previously stored beginning with the first stored frequency Press Func or Func to select a skipped frequency while Hold appears L O appears when you select a skipped frequency Delay Sometimes a user might pause before replying to a transmission To avo...

Страница 44: ...the scanner automatically adds a 2 second delay to every frequency it stops on in that band To turn off the 2 second delay press Func Dly while the scanner is monitoring a channel scanning or searching DLY disappears Turning Channel Storage Banks On and Off You can turn each channel storage bank on and off When you turn off a bank the scanner does not scan any of the 10 channels in that bank While...

Страница 45: ... manually select the channel then press Func L O L O disappears To unlock all channels in the banks that are turned on press Hold to stop scanning then press Func and press and hold L O until the scanner beeps twice Priority The priority feature lets you scan through the channels and still not miss important or interesting calls on specific channels You can program one stored channel in each bank ...

Страница 46: ...Then the scanner checks the designated priority channel every 2 seconds in each bank To turn off the priority feature press Func Pri PRI disappears Using Keylock Use the scanner s keylock to protect it from accidental program changes When the scanner s keys are locked the only controls that operate are Scan Func Hold and To turn on keylock press Func appears To turn off keylock press Func disappea...

Страница 47: ...h that controls power to the AC outlet where you connected the AC adapter make sure it is on Improper reception The scanner s antenna might need to be adjusted Check the antenna connection or move or reposition the antenna Move the scanner You might be in a remote area that could require an optional multi band antenna Check with your dealer or local electronics store Scan won t stop The squelch mi...

Страница 48: ... the channel s frequency is stored in the scanner s memory The channel might not be active Wait for a transmission on the channel Scan won t start You must press Scan to scan Press Scan The squelch might need to be adjusted Adjust the squelch threshold See Turning On The Scanner and Setting Squelch on Page 30 One or more channelsmight be locked out Make sure the channels you want to scan are not l...

Страница 49: ...edure clears all the information you have stored in the scanner Before you reset the scanner try turning it off and on to see if it begins working properly Reset the scanner only when you are sure it is not working properly 1 Turn off the scanner 2 While holding down 2 9 and Hold turn on the scanner It takes about 3 seconds to initialize and CLEAr appears ...

Страница 50: ...ost simply reprogram each channel The display shows 000 000 in all channels when there has been a memory loss Always press each button firmly until you hear the entry tone for that key entry Location 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 If the scanner receives strong interfer...

Страница 51: ...act 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 might be receiving a birdie Birdies are internally generated signals inherent in the electronics of the receiver Press L O to lock out the channel then press Scan to resume scanning If you have In...

Страница 52: ...2 5 kHz steps 400 0 512 0 Land Mobile Band Above band in 6 25 kHz steps Sensitivity SINAD 12 dB 25 005 MHz AM 0 5 µV 54 050 MHz FM 0 3 µV 86 275 MHz FM 0 3 µV 118 800 MHz AM 0 5 µV 127 175 MHz AM 0 5 µV 135 500 MHz AM 0 5 µV 138 150 MHz FM 0 3 µV 162 400 MHz FM 0 3 µV 173 225 MHz FM 0 3 µV 406 875 MHz FM 0 4 µV 453 250 MHz FM 0 4 µV 511 9125 MHz FM 0 4 µV Operating Temperature Normal 20 C to 60 C ...

Страница 53: ...Speaker 32 mm dia 8 ohm Dynamic Type Current Drain Squelched 110 mA Full Output 310 mA Power Requirements 2 AA Alkaline Batteries 3V DC or 2 AA Rechargeable Ni MH Batteries 2 4V DC or AC Adapter 6 VDC 500mA Antenna 50 ohms Impedance External Jacks Antenna Jack BNC Type Ext Speaker Jack 3 5mm DC Power Jack 4 4 mm Size 68mm W x 31 5mm D x 115mm H Weight 165 g Features specifications and availability...

Страница 54: ...54 Optional Accessories Optional Accessories Earphone AC Adapter fi External Speaker Optional Accessories ...

Страница 55: ...warranty period subject to the limitations and exclusions set out below Warranty Period This warranty to the original retail purchaser is only valid in the original country of purchase for a Product first purchased either in Australia or New Zealand and will expire one 1 year from the date of the original retail sale If a warranty claim is made this warranty will not apply if the Product is found ...

Страница 56: ...50 Harris Road East Tamaki Auckland Fx 9 274 4253 www uniden co nz Customers in other States should ship or deliver the Product freight pre paid to their nearest Uniden Authorised Repair Centre Contact Uniden for the nearest Warranty Agent to you Procedure for Obtaining Warranty Service Depending on the country in which the Product was first purchased if you believe that your Product does not conf...

Страница 57: ...57 Note ...

Страница 58: ...58 Note ...

Страница 59: ...59 Note ...

Страница 60: ... 2011 Uniden Australia Pty Ltd Uniden New Zealand Limited Printed in PRC UBZZ01323FA 0 ...

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