Radio Shack PRO-92 manuale d’uso

Owner’s Manual Cat. No. 20-522 PRO-92 500-Channel Portable Trunking Scanner Please read before using this equi pment. 20-522.fm Page 1 Frid ay, September 17, 199 9 12:46 PM[...]

2 FEATURES Your RadioShack PRO-92 500-Chann el Portable Trunk- ing Scanner is one of a new generation of scanners de- signed to track Motorola ® Type I and Type II (such as Smartnet ® and Privacy Plus ® ) and hybrid analog trunking systems, plus GE/Ericsson (EDACS ® ) and EF Johnson (LTR ® ) type systems, which are extensively used in many com[...]

3 Your scanner includes these special features: Simultaneous Trunking Operation — tracks three trunking systems, LTR, Motorola, and EDACS at the same time, as well as conventional systems. Text Input — lets you input a text label for each channel, talk group ID, bank, or othe r memory so you can easily know about the transmis si on you are hear[...]

4 60 Preprogrammed Frequency Ranges — let you search for transmissions within preset frequency ranges or within ranges you set, to reduce search time and select interesting freq uencies more q uickly. Scan Delay — delays scanning for a bout 2 seconds be- fore moving to another channel in conve ntional mode, so you can hear more replies that are[...]

5 Three Power Options — let you power the scanner with internal batterie s (non-rechargeable batteries or re- chargeable batteries). You can also use an AC adapter (not supplied) or power the scanner in a vehi cle using a DC adapter (not supplied). Supplied Police Call T runking Gui de — provides a quick reference to public safety trunking radi[...]

6 If you cannot elimin ate the interference, th e FCC requires that you stop using your scanner. This device complies with Part 15 of the FCC Rules . Op- eration is subject to the follo wing conditions: (1) This de- vice must not cause harmful interference, an d (2) this device must accept a ny interference received, including interference that may[...]

7 CONTENTS Preparation .............. .............. .............. ........... ........... 10 Power Sources ............. .............. .............. ........... 10 Using Batteries ............... .............. ................ 10 Charging Rechargeable Batterie s ................ 13 Using AC Power ............... .............. .............. 1[...]

8 Storing a Frequency While Searching for a Specified Channel ................... .............. ....... 42 Changing a Search Range with One of the 60 Preprogrammed Ranges ....... 43 Manually Changing a Search Range ........... 43 Scanning the Channels ....................................... 44 Turning Channel-Storage Banks Off and On .............[...]

9 Clearing Talk Group ID’s ............................ .. 62 Clearing All Talk Gro up ID’s in One Bank ...................... .............. .............. 63 Open and Closed Modes ............ ................. ........ 63 Changing the Open/Closed Mode ................ 64 A General Guid e to Scanning ....................... ........... 65 Gui[...]

10 PREPARATION POWER SOURCES You can power your scanner from any of three sources: • internal non-recharge able batteries or recharg eable batteries (not supplied — see “Using Batteries”) • standard AC power (with an opti onal AC adapter — see “Using AC Power” o n Page 14) • vehicle power (with an optional DC adapter — see “Us[...]

11 Warning: Never install non-rechargeable batteries in the rechargeable yellow batte ry holder. Non-rechargeab le batteries can get h ot or explode if you try to recha rge them. Note: You must charg e rechargeable batteries b efore you use them the first time. See “Ch argin g Rechargeable Batteries” on Page 13. Follow these steps to install th[...]

12 3. Insert six AA batteries in the battery holder as indi- cated by the polarity symbols (+ and –) marked on the holder. Cautions: • Use only fresh batteries of the required size and recommended type. • Always remove old or weak batteries. Batteries can leak chemicals th at destroy electronic ci rcuits. • Do not mix old and new batteries,[...]

13 When battery power is l ow, Low Battery! appears and the scanner beeps continuously. Whe n battery pow- er is depleted, the scanner turns itself off. Replace all six non-rechargeable batte ries, or recharge the rechargeab le batteries. See “Cha rging Rechargeable Batteries”. Warning: Alwa ys dispose of old batteries promptly and properly. Do[...]

14 • Rechargeable batteries la st longer and deliver more power if you let them fully discharge once a month. To do this, use the scanner until Low Battery! appears on the display. Then fully charge the rechargeable batteries. Important: This scanner can use nickel- cadmium rechargeable batteri es. At the end of a nickel-cadmium b attery's u[...]

15 2. Plug the adapter’s barrel plug into the scanner’s PWR DC 9V jack. 3. Plug the adapter into a standard AC outl et. Using V ehicle Power You can power the scan ner from a vehicle’s 12V pow er source (such as a cigarette-lighter socket) using a 9V, 300 mA DC adapte r and a size H Adap taplug (neither supplied). We recommend RadioShack Cat.[...]

16 3. Plug the adapter’s cigarette-lig hter plug into your vehicle’s cigarette-lighter socket. Note: If the scanner does n ot operate pr operly whe n yo u connect a DC adapter, unplug the DC adapter from the cigarette-lighter socket and clean the socket to re move ashes and other debris. CONNECTING THE ANTENNA Follow these steps to attach the s[...]

17 Connecting an Optional Antenna The antenna connecto r on your scanner makes it ea sy to use the scanner with a variety of antennas, such as an external mobile ante nna or outdoor base station antenna. Your local RadioShack store sells a variety of an te nnas. Always use 50-ohm coaxial cab le, such as RG-58 or RG- 8, to connect an outdoor antenna[...]

18 Listening Safely To protect your hearing, fo llow these guidelines when you use an earphone or headphones: • Do not listen at extremely high volu me levels. Extended high-volume listen ing can lead to perma- nent hearing loss. • Set the volume to th e lowest setting before you begi n listening. After you begin listening, ad just the volume t[...]

19 USING THE BELT CLIP You can use the belt clip attached to the back of the scanner for hands-free carrying when yo u are on the go. Slide the belt clip over your belt or waistba nd. CONNECTING THE CLONE CABLE You can transfer the programmed data to and from an- other PRO-92 using the supplied clo ne cable. Connect the cable between each scanner?[...]

20 ABOUT YOUR SCANNER Once you understand a few simple terms used in this manual and familiarize yourself with your scann er’s fea- tures, you can put the scanner to work for you. You sim- ply determine the type of commu nications you want to receive, then set the scanner to scan them. A frequency is the receiving signa l location (expressed in k[...]

21 FUNC (function) — lets you use various func tions by pressing this key along with o ther keys. SCAN — scans through the programmed channels. MANUAL — stops scanning and lets you directly ente r a channel number. TRUNK — stores the trunking ID code or holds the trunk- ing ID while scanning. WX — scans through the 7 preprogrammed weather[...]

22 PGM — programs frequencies into channels. ENTER — lets you complete the entry of fre quencies and text. 1 / DELAY — enters a 1, or programs a 2-se cond delay for the selected channel/sea rch bank, or inputs chara cters 0 through 9. 2/ABC — enters a 2, or inputs characters A, B, or C. 3/DEF — enters a 3, or inputs characters D, E, or F.[...]

23 A LOOK AT THE DISPLAY Manual Mode Current Manual Mode (AM or FM) Channel Stored Text Current Fre quency Current Bank Mode is FM Receiving a Signal ( • no signal) Priority Freq. (T)runked Attenuate ( • no attenuation) Delay ( • no delay) Locked ( Out ( Scanning Up) Scanning Down) Bank 0–(9) Out Channel 00–(49) Motorola (M)anual Mode Ban[...]

24 Search Mode 6 and 7 are turned off Search Mode Upper Li mit Stepping AM Delay Scanning Up Searching Freque ncy for Range in Bank 3 Search Mode Motorola Search Bank 5 20-522.fm Page 24 Friday, September 17, 1999 1 2:46 PM[...]

25 UNDERSTANDING BANKS Channel Storage Banks To make it easier to identify and select the channels you want to listen to, channels are divided into 10 banks (0–9) of 50 (00 to 49) channel s each. Use each channel-stor- age bank to group frequenci es, such as those used by the police department, fire depa rtment, ambulance ser- vices, or aircraft [...]

26 450.9250 452.1875 25 Business 453.9875 454.9875 25 Business 460.9750 462.5500 25 Business 463.1750 465.0000 25 Business 851.0000 866.0000 12.5 Business 935.0000 944.0000 12.5 Business 33.0400 33.9800 20 Fire 29.7000 33.0400 5 Fixed/Mobile 33.9800 42.0200 20 Fixed/Mobile 46.6000 50.0000 20 Fixed/Mobile 928.0000 929.0000 12.5 Fixed 932.0000 935.00[...]

27 144.0000 148.0000 20 Ham 2 m 420.0000 450.0000 25 Ham 70 cm 902.0000 928.0000 12.5 Ham/ISM 33cm 150.9650 151.9850 5 Highways 462.9250 463.1750 25 Medical 156.2500 157.4250 25 Marine Band 161.7600 161.9150 25 Marine Band 380.0000 400.0000 50 Military 806.0000 823.9875 12.5 Mobile Units 894.0000 902.0000 12.5 Mobile Units 161.5650 161.7600 5 News [...]

28 Note: The steps shown above are defaul t values. You can select any desired step se tting. UNDERSTANDING Y OUR PRO-92’ S MODES You can program each channel with any of seven receive modes. Each mode affects how your scanner operates when scanning and receivi ng transmissions, and also af- fects what transmissions you receive when you set the s[...]

29 With few exceptions, such as the VHF Aircraft and Ma- rine bands, almost every other VHF or UHF radio system uses some form of cod ed squelch. By far, PL is the most popular mode among non -trunked systems. For most scanning use, try setting PL mode for all non-trunked channels. If you operate the bank in op en mode, the scanner will display the[...]

30 When the scanner receives a transmission on a channel set to the PL mode, it first decodes the PL tone in cluded with the transmission. In the Open mode, the scanner stops on the transmission and displays th e PL tone on the bottom line of the displa y (or displays N one if no tone is included). In the Cl osed mode, the scanner only stops on the[...]

31 L TR (E. F . Johnson) Mode This sets the scanner to decode the talk group ID’s used with an LTR system. This is a trunking system used pri- marily by business or private communications service providers, such as taxi cabs, delivery trucks, and repair services. LTR systems encode all trunking info rma tion as digital subaudible data that accomp[...]

32 Motorola Mode This sets the scanner to decode the talk group ID’ s used with Motorola trunking systems. These systems are used by business and public safety groups to efficientl y allo- cate a small number of frequencies (as few as 5 ) to many groups of users (as many as several thousand). To do this, each group of users in the system is assig[...]

33 For example, Police  East Patrol mi ght be assigned to group 12, making th e full Fleet, Subfleet ID be 00 0-12. To properly map th e raw Type I data to the correct fl eet-sub- fleet format, you must program the correct fleet map into the scanner. Fleet map information is widely available on the internet for most Type I systems in use. Type I[...]

34 When there is activity on an EDACS system, that infor- mation is sent out on the control chan nel. The scanner decodes the ID for the active talk group. In the Ope n mode, the scanner then goes to the transmission and dis- plays the talk group ID on the bottom line of the display. In the Closed mode, the scanner only goes to transmis- sions that[...]

35 OPERATION T U RNING ON THE SCANNER AND SETTING SQUELCH 1. Turn SQU ELCH fully counterclockwise until the indi- cator points to MIN before you turn on the scanner. 2. To turn on the scanner, turn VOLUME clockwise. Welcome To Multi-System Trunking appears on the displ ay. After about 3 seconds, you hear a hissing sou nd. 3. Turn SQUELCH clockwise,[...]

36 STORING KNOWN FREQUENCIES INTO CHANNELS Good references for active frequencies are the Ra- dioShack Police Call , Aeronautical Frequency Di rectory , and Maritime Frequency Directory . We update these di- rectories every year, so be sure to get a current copy. Also see the supplied Police Call Trunki ng Gu ide . Follow these steps to store frequ[...]

37 • Your scanner automa tically rounds the en tered frequency to the nearest valid frequency. For example, if you enter a frequency of 151.4 73, your scanner accepts it as 151.470. • Press FUNC then press DELAY/1 to turn th e delay function on or off. If yo u want the scanner to pause 2 seconds on this ch anne l after a transmis- sion ends bef[...]

38 3. Press TEXT . The cursor appears a t the 3rd line on the display. 4. Enter the text using the numera l keys (see “Text Input Chart” on Page 39). Note: If you make a mistake, press or to move to the character you want to change. For example input “HAM 6m” as follows: • “H” is the second letter associated with 4 on th e keypad. Pre[...]

39 Note: If the channel i s programmed for P/L, DPL, LTR, MOT or ED mode, the scanner displays the mode infor- mation on the 4t h line. T ext Input Chart Notes: • To access the numbers, after you press FUNC and 6 , press 1 , then press the desired number you want to enter. • To enter a lowe rcase character or a character from the second set for[...]

40 FINDING AND STORING ACTIVE FREQUENCIES You can search for transmissions within ten ran ges of fre- quencies, called a search bank. The search bank is divid- ed into 10 search bands. Yo u can chan ge th e bands with the 60 preprogrammed search bands in the scann er (see “Search Banks” on Page 25). You ca n also change the search bank’s sear[...]

41 Searching a Preprogrammed Frequency Range The scanner contains these preprogrammed se arch ranges, stored in search banks (0–9). Follow these steps to se lect preprogrammed search ranges and search them for active frequencies. 1. Press SEARCH . The scanner sea rches active se arch bank. Note: To reverse a search directi on, press or . 2. Using[...]

42 3. When the scanner finds an active frequency, it stops searching. To save the fre quency into a ch annel in the channel storage bank (bank 9 only), press FUNC then press ENTER . Stored @ 9xx appears on the display (xx: channel numbe r). Press or to con- tinue searching for additional active frequenci es. Notes: • During search, you can manua [...]

43 Changing a Search Range with One of the 60 Preprogrammed Ranges You can replace the search range with o ne of the 60 pre- programmed ranges. 1. Press FUNC then press SEARCH to enter search pro- gram mode. PSR and the search ba nk number of the current range appear at the displ ay’s upper left cor- ner. 2. Press or to select the desired search [...]

44 3. Use the number keys to e nter the lower range you want to search and store, then press ENTER to store the frequency. 4. Use the number keys to enter the higher range yo u want to search and store, then press ENTER again to store the frequency. Notes: • If you enter a highe r frequency first then enter a lower frequency, the scann er automat[...]

45 Notes: • You cannot turn off all banks. There mu st be a t least one active bank. • You can manua lly select any channel i n a bank, even if the bank is turned off. To turn on banks while scanning, press the number key until the bank’s number appears. MANUALLY T UNING A FREQUENCY If desired, you can locate a freque ncy manually. To tune to[...]

46 DELETING FREQUENCIES FROM CHANNELS 1. Press MANUAL . 2. Use the number keys to enter the channel which has the frequency you want to delete. 3. Press MANUAL again. 4. Press PGM to enter the program mode. M ch anges to P on the display. 5. Press FUNC . 6. Press CL . The frequ ency number changes and the display shows 0.0000 MHz . LISTENING T O TH[...]

47 Weather Alert Featu re This scanner can detect both the weather alert tone and can decode the d igital SAME message tha t precedes each alert. If you are monitoring a weather channel when an alert is broadcast, the scanner sou nds an alert and displays the type of alert being broadcast. The weather service precedes each wea ther alert with a dig[...]

48 SPECIAL FEATURES USING THE DELAY FUNCTION Note: The delay function turns on automatically when you turn on the scanner. Many conversations might have a pau se of several sec- onds between a query and a reply. To avoid missing a re- ply, you can program a 2-second delay in to any of your scanner’s channels. Then, when the scanner stops on the c[...]

49 Notes: • You can still manually select locked-out channels. • If you lock out a channel that is set to a trunking mode, lockout is removed when you cycle power. This lets you easily temporarily lockout trun king data channels. To remove the locko ut from a channel, manually select the channel and press L/OUT until L disappears from the displ[...]

50 Reviewing Locked-Out Frequencies Follow these steps to review the frequencies within a search bank that you locked out: 1. Press SEARCH to start search. 2. Press FUNC then press L/OUT . The locked-out fre- quency appear on the display. If the search ban k has no locked-out frequency, L/O list is empty. appears on the display. 3. Press FUNC then [...]

51 3. Press FUNC , then press 4 . Confirm list clear? 1=YES Press other key for NO. appears on the displ ay. Press 1 to clear all lock-out frequencies and List cleared appears on the display for about 2 seconds. Press any key other than 1 , to cancel clear. PRIORITY With the priority feature, you can scan throug h pro- grammed channels and still no[...]

52 Note: This scanner cann ot set a channel as the priority channel if the channel’s re ceive mode is LTR , MOT , or ED . Follow these steps to program a weather channel as th e priority channel. 1. Press WX . 2. Select the weather chann el you want to program as the priority channel. 3. Press FUNC then press PRI . Pri appears on the dis- play to[...]

53 CHANGING THE RECEIVE MODE The scanner is preset to the most co mmon AM or FM re- ceive mode for each fre quency range. The preset mo de is correct in most cases. However, some amateur radio transmissions and trunked systems do not operate in the preset mode. If you try to li sten to a transmission when the scanner is not set to the correct recei[...]

54 CHANGING THE FREQUENCY STEP The scanner searches at a p reset frequency step for each frequency ran ge. Press STE P to change the step in- crement when moving betwe en frequencies of a se arch band or follow th ese steps to change steps in a specific bank. 1. Press SEARCH . 2. Select a bank. 3. Press FUNC then STEP . **PAUSED** displays on Line [...]

55 Note: If you turn on this feature, the scanner might not re- ceive weak signals. To turn off the attenuator, press ATT again. A disappears from the display. This setting is stored for each channel. USING THE DISPLAY BACKLIGHT You can turn on the display’s backlight for easy viewing in dimly lit areas. Press LIT to turn on the displa y light fo[...]

56 Note: You cannot activate the keylock when in the middle of programming. To turn on the keyloc k, press FUNC then press / LIT . Keyboard Locked appears on the display for about 1 second. Keyboard Locked appears when you press any key after locking the keypad. To turn off the keylock, press FUNC then press / LI T . The scanner beeps on ce and Key[...]

57 TRUNKING OPERATION The PRO-92 scanner tracks transmissions that use the Motorola ® Type I and Type II (such as Smartnet and Pri- vacy Plus) and hybrid analog trunking systems, plus GE/ Ericsson (EDACS) and EF Johnson (LTR) type systems, which are extensiv ely used in many communica tion sys- tems. Trunking systems allocate a few frequencies to [...]

58 PROGRAMMING T RUNKING FREQUENCIES Program trunking frequencies just as you program nor- mal, non-trunked frequencies, bu t store the appropriate mode (MO, ED, or LT) wi th each frequen cy. Notes: • EDACs systems must be stored in banks by them- selves. You can, however, mix Motorola, or LTR and conventional channels in a ban k. • During Trun[...]

59 5. Press 8 and the display below appe ars. 6. Enter the size code information supplied with the Type I system information, referring to the instruction that appears on the d isplay. If the informa tion was not supplied, try these common fleet maps. B L O C K Size Code 123 4 5 6 7 8 0 S11 S4 S4 S12 S4 S3 S10 S1 1 S11 S4 S4 — S4 S10 S10 S1 2 S11[...]

60 7. Enter the size code and press ENTER for each entry. If you make a mistake, press CL and enter the cor- rect size code. Note: The defa ult setting of the bank is for Motorola Type II. However, after you set Type I and if you want to return to T ype II, press 15 at Step 5. 8. To confirm the input, repeat Steps 1 –6 and press ENTER . Each time[...]

61 Note: When you try to store more than 100 talk group ID’s in a bank, Memory full! appears. Clear some talk group ID’s in order to store new ones (see “C learing Talk Group ID’s” on Page 62). Follow these steps to manually store talk group ID’s or to edit a stored ID. 1. Press PGM . 2. Press TRUNK . 3. To select the bank you want to s[...]

62 Locking Out T alk Groups ID Note: You can only lock out talk group ID’s whe n the scanner is in the closed mode (see “Open a nd Closed Modes” on Page 63). To lock out a talk group ID, follow these steps: 1. Press PGM . 2. Press TRUNK . 3. Press FUNC , or to move the desired bank. 4. Press or to select the ID memory. 5. Press L/OUT to lock [...]

63 Clearing All T alk Group ID’ s in One Bank You can clear all talk grou p ID’s within a bank. This lets you quickly delete all talk group ID’ s from a bank if, fo r ex- ample, you want to use the bank to store a different set of talk group ID’s. 1. Press PGM . 2. Press TRUNK to enter a talk group ID memory mode. 3. Select a talk group ID [...]

64 The open or closed mode is set in each channel storag e bank. + or – is displayed under the channel storage bank’s number while scanning. Or, the status display shows the OPEN/CLOSED mode at the to p line while the scanner is in manual mode or while the scanner is receiv- ing a signal d uring scanning. When no ID code is programmed into the [...]

65 A GENERAL GUIDE TO SCANNING Reception of the frequenci es covered by your scanner is mainly “line-of-sight.” That means you u sually cannot hear stations that are beyond the horizon. GUIDE T O FREQUENCIES US Weather Frequenc ies Ham Radio Frequencies Ham radio operators often transmit emergency informa- tion when other means of communication[...]

66 This scanner’s birdie freque ncies (in MHz) ar e: To find the birdies in yo ur scanner, begin by disconnect- ing the antenna a nd moving it aw ay from the scanne r. Make sure that no other nearby radio or TV sets are turned on near the scanner. Use the se arch function and scan every frequency range fro m its lowest frequency to the highest. O[...]

67 GUIDE TO THE ACTION BANDS T ypical Band Usage Primary Usage As a general rule, most of the radio activity is concentra t- ed on the followin g frequencies: VHF Band UHF Band VHF Band Low Range 29.00–50.00 MHz 6-Meter Amateur 50.00–54.00 MHz U.S. Government 137.00–144.00 MHz 2-Meter Amateur 144.000–148.00 MHz High Range 148.00–174.00 MH[...]

68 Note: Remote control stations and mobile u nits operate at 5 MHz higher than their associated base stations and relay repeater units. BAND ALLOCATION To help decide which fre quency ranges to scan, use th e following listing of th e typical se rvices that u se the fre- quencies your scanner receives. These frequencies are subject to change, and [...]

69 TOW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . T ow Trucks TRAN . . . . . . . . . . . . . . . . . . . . . . . . Transportation Services . . . . . . . . . . . . . (Trucks, T ow T ru cks, Buses, Railroad, Other) TSB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Trunked Systems TVn . . . . . . . . . . . . . [...]

70 VHF High Band (148–174 MHz) 148.050–150.345 . . . . . . . . . . . . . . . . . . . . . . CAP , MAR, MIL 150.775–150.790 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MED 150.815–150.980 . . . . . . . . . . . . . . . . TOW , Oil Spill C leanup 150.995–151.475 . . . . . . . . . . . . . . . . . . . . . . . . ROAD, POL 151.490[...]

71 ULTRA HIGH FREQUENCY (UHF) U. S. Government Band (406–420 MHz) 406.125–419.975 . . . . . . . . . . . . . . . . . . . . . . . . GOVT , USXX 70-cm Amateur Band (420–450 MHz) 420.000–450.000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HAM Low Band (450–470 MHz) 450.050–450.925 . . . . . . . . . . . . . . . . . . . . . [...]

72 Private Trunked Band 935.0125–939.9875 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PTR General Trunked Band 940.0125–940.9875 . . . . . . . . . . . . . . . . . . . . . . . . . . . . GTR FREQUENCY CONVERSION The tuning l ocation of a stati on can be expressed in fre- quency (kHz or MHz) or in wavelength (meters). The fol- lowing[...]

73 TROUBLESHOOTING If you have problems with your scanner, here are some suggestions that might help you eli minate the problem. If they do not, take your scanner to yo ur local R a- dioShack store for assistance. Problem Possible Cause Remedy Scanner is on but will not scan. SQUELCH is not adjusted cor- rectly. Turn SQUELCH clock- wise. See “Tur[...]

74 In the scan mode, the scanner locks on frequen- cies that have an unclear transmissi on. Stored frequen- cies are the same as “birdie” frequencies. Avoid storing birdie fre- quencies or only select them manually . See “Birdie Frequencies” on Page 65. Keys do not work or dis- play changes. Undetermined error . Turn the scanner off then on[...]

75 RESETTING/INITIALIZING THE SCANNER If the scanner’s display locks up or does not work proper- ly after you co nnect a power so urce, you might need to reset or initialize it. Important: If you have problems with the scanner, fi rst try to reset it to retain all memory. If that does not wo rk, you can initialize the scanner; however, initializi[...]

76 2. Press 0 then 1 while the disp lay shows Welcome To Multi-System Trunking . Initializ- ing Please Wait . appears on the display about 25 seconds. Note: Do not turn off the scanner until the initializa- tion is complete and Welcome To Multi-Sys- tem Trunking appears again. 20-522.fm Page 76 Friday, September 17, 1999 1 2:46 PM[...]

77 CARE AND MAINTENANCE Your RadioShack PRO-92 500-Chann el Portable Trunk- ing Scanner is an exampl e of superior design and crafts- manship. The following sug gestions wi ll help you care for your scanner so yo u can enjoy it fo r years. Keep the scanner dry. If it gets wet, wipe it dry immediately. Liquids can contain miner- als that can corrode[...]

78 SPECIFICATIONS Frequency Coverage: Ham .................................... 29–30 MHz (i n 5 kHz steps) VHF Lo ............................... 30–50 MHz (in 5 kH z steps) Ham .................................... 50–54 MHz (i n 5 kHz steps) Aircraft ............... 1 08– 136.9875 MHz (in 12.5 kHz steps) Government ..................... 13[...]

79 Search Rate ......................... Up to 50 Steps per second Delay Time ..................... ............... .............. .... 2 seconds Intermediate Frequencies (IF): 1st .................... .............. ........... .............. . 257.5 MHz 2nd ........................ .. ............... ........... ... .. ... 21.4 MHz 3rd ..........[...]

RadioShack A Division of Tandy Corporation Fort Worth, Texas 76102 GE-99D-3314 09A99 Printed in Japan Limited One-Yea r Warranty This product is warranted by RadioShack against manufact uring defects in material and workmanship under normal use for one (1) year from the date of purchase from RadioShack company- owned stores and authorized Ra- dioSh[...]